From 95ebbc985a0e64a364e880de89dbc1ae7952d91e Mon Sep 17 00:00:00 2001
From: till <till@php.net>
Date: Sun, 03 Feb 2008 07:58:34 -0500
Subject: [PATCH] * putting latest MDB2 into SVN * adding MDB2 drivers for mssql, mysql, mysqli, pgsql, sqlite

---
 program/lib/MDB2/Driver/pgsql.php           | 1470 +++
 program/lib/MDB2/Driver/Native/Common.php   |   61 
 program/lib/MDB2/Extended.php               |  721 +
 program/lib/MDB2/Driver/Datatype/mysql.php  |  466 +
 program/lib/MDB2/Driver/Reverse/pgsql.php   |  527 +
 program/lib/MDB2/Driver/Native/pgsql.php    |   88 
 program/lib/MDB2/Driver/Function/Common.php |  249 
 program/lib/MDB2/Driver/Datatype/mysqli.php |  504 +
 program/lib/MDB2/Driver/Reverse/sqlite.php  |  573 +
 program/lib/MDB2/Driver/Manager/mysql.php   | 1064 ++
 program/lib/MDB2/Driver/Function/mysqli.php |  128 
 program/lib/MDB2/Driver/Manager/pgsql.php   |  765 +
 program/lib/MDB2/Driver/Native/mysql.php    |   60 
 program/lib/MDB2/Driver/Datatype/mssql.php  |  498 +
 program/lib/MDB2/Driver/sqlite.php          | 1078 ++
 program/lib/MDB2/Driver/Native/mssql.php    |   60 
 program/lib/MDB2/Driver/Native/mysqli.php   |   60 
 program/lib/MDB2/Driver/Manager/mssql.php   |  815 +
 program/lib/MDB2/Driver/Datatype/Common.php | 1830 ++++
 program/lib/MDB2/Driver/Manager/sqlite.php  | 1325 ++
 program/lib/MDB2/Driver/Manager/mysqli.php  | 1067 ++
 program/lib/MDB2/Driver/Datatype/pgsql.php  |  555 +
 program/lib/MDB2/Driver/Native/sqlite.php   |   60 
 program/lib/MDB2/Driver/Datatype/sqlite.php |  412 
 program/lib/MDB2/Driver/Reverse/mysqli.php  |  578 +
 program/lib/MDB2/Driver/Function/mssql.php  |  178 
 program/lib/MDB2/Driver/Reverse/mysql.php   |  514 +
 program/lib/MDB2.php                        | 4295 +++++++++
 program/lib/MDB2/Driver/Reverse/Common.php  |  511 +
 program/lib/MDB2/Driver/Function/sqlite.php |  125 
 program/lib/MDB2/Driver/mysql.php           | 1535 +++
 program/lib/MDB2/Driver/mssql.php           | 1010 ++
 program/lib/MDB2/Iterator.php               |  259 
 program/lib/MDB2/Driver/Function/pgsql.php  |   99 
 program/lib/MDB2/Driver/mysqli.php          | 1697 +++
 program/lib/MDB2/Driver/Reverse/mssql.php   |  653 +
 program/lib/MDB2/Driver/Function/mysql.php  |  120 
 program/lib/MDB2/Date.php                   |  183 
 program/lib/MDB2/Driver/Manager/Common.php  |  935 ++
 program/lib/MDB2/LOB.php                    |  264 
 40 files changed, 27,392 insertions(+), 0 deletions(-)

diff --git a/program/lib/MDB2.php b/program/lib/MDB2.php
new file mode 100644
index 0000000..a8bbb0f
--- /dev/null
+++ b/program/lib/MDB2.php
@@ -0,0 +1,4295 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: MDB2.php,v 1.307 2007/11/10 13:29:05 quipo Exp $
+//
+
+/**
+ * @package     MDB2
+ * @category    Database
+ * @author      Lukas Smith <smith@pooteeweet.org>
+ */
+
+require_once 'PEAR.php';
+
+// {{{ Error constants
+
+/**
+ * The method mapErrorCode in each MDB2_dbtype implementation maps
+ * native error codes to one of these.
+ *
+ * If you add an error code here, make sure you also add a textual
+ * version of it in MDB2::errorMessage().
+ */
+
+define('MDB2_OK',                      true);
+define('MDB2_ERROR',                     -1);
+define('MDB2_ERROR_SYNTAX',              -2);
+define('MDB2_ERROR_CONSTRAINT',          -3);
+define('MDB2_ERROR_NOT_FOUND',           -4);
+define('MDB2_ERROR_ALREADY_EXISTS',      -5);
+define('MDB2_ERROR_UNSUPPORTED',         -6);
+define('MDB2_ERROR_MISMATCH',            -7);
+define('MDB2_ERROR_INVALID',             -8);
+define('MDB2_ERROR_NOT_CAPABLE',         -9);
+define('MDB2_ERROR_TRUNCATED',          -10);
+define('MDB2_ERROR_INVALID_NUMBER',     -11);
+define('MDB2_ERROR_INVALID_DATE',       -12);
+define('MDB2_ERROR_DIVZERO',            -13);
+define('MDB2_ERROR_NODBSELECTED',       -14);
+define('MDB2_ERROR_CANNOT_CREATE',      -15);
+define('MDB2_ERROR_CANNOT_DELETE',      -16);
+define('MDB2_ERROR_CANNOT_DROP',        -17);
+define('MDB2_ERROR_NOSUCHTABLE',        -18);
+define('MDB2_ERROR_NOSUCHFIELD',        -19);
+define('MDB2_ERROR_NEED_MORE_DATA',     -20);
+define('MDB2_ERROR_NOT_LOCKED',         -21);
+define('MDB2_ERROR_VALUE_COUNT_ON_ROW', -22);
+define('MDB2_ERROR_INVALID_DSN',        -23);
+define('MDB2_ERROR_CONNECT_FAILED',     -24);
+define('MDB2_ERROR_EXTENSION_NOT_FOUND',-25);
+define('MDB2_ERROR_NOSUCHDB',           -26);
+define('MDB2_ERROR_ACCESS_VIOLATION',   -27);
+define('MDB2_ERROR_CANNOT_REPLACE',     -28);
+define('MDB2_ERROR_CONSTRAINT_NOT_NULL',-29);
+define('MDB2_ERROR_DEADLOCK',           -30);
+define('MDB2_ERROR_CANNOT_ALTER',       -31);
+define('MDB2_ERROR_MANAGER',            -32);
+define('MDB2_ERROR_MANAGER_PARSE',      -33);
+define('MDB2_ERROR_LOADMODULE',         -34);
+define('MDB2_ERROR_INSUFFICIENT_DATA',  -35);
+// }}}
+// {{{ Verbose constants
+/**
+ * These are just helper constants to more verbosely express parameters to prepare()
+ */
+
+define('MDB2_PREPARE_MANIP', false);
+define('MDB2_PREPARE_RESULT', null);
+
+// }}}
+// {{{ Fetchmode constants
+
+/**
+ * This is a special constant that tells MDB2 the user hasn't specified
+ * any particular get mode, so the default should be used.
+ */
+define('MDB2_FETCHMODE_DEFAULT', 0);
+
+/**
+ * Column data indexed by numbers, ordered from 0 and up
+ */
+define('MDB2_FETCHMODE_ORDERED', 1);
+
+/**
+ * Column data indexed by column names
+ */
+define('MDB2_FETCHMODE_ASSOC', 2);
+
+/**
+ * Column data as object properties
+ */
+define('MDB2_FETCHMODE_OBJECT', 3);
+
+/**
+ * For multi-dimensional results: normally the first level of arrays
+ * is the row number, and the second level indexed by column number or name.
+ * MDB2_FETCHMODE_FLIPPED switches this order, so the first level of arrays
+ * is the column name, and the second level the row number.
+ */
+define('MDB2_FETCHMODE_FLIPPED', 4);
+
+// }}}
+// {{{ Portability mode constants
+
+/**
+ * Portability: turn off all portability features.
+ * @see MDB2_Driver_Common::setOption()
+ */
+define('MDB2_PORTABILITY_NONE', 0);
+
+/**
+ * Portability: convert names of tables and fields to case defined in the
+ * "field_case" option when using the query*(), fetch*() and tableInfo() methods.
+ * @see MDB2_Driver_Common::setOption()
+ */
+define('MDB2_PORTABILITY_FIX_CASE', 1);
+
+/**
+ * Portability: right trim the data output by query*() and fetch*().
+ * @see MDB2_Driver_Common::setOption()
+ */
+define('MDB2_PORTABILITY_RTRIM', 2);
+
+/**
+ * Portability: force reporting the number of rows deleted.
+ * @see MDB2_Driver_Common::setOption()
+ */
+define('MDB2_PORTABILITY_DELETE_COUNT', 4);
+
+/**
+ * Portability: not needed in MDB2 (just left here for compatibility to DB)
+ * @see MDB2_Driver_Common::setOption()
+ */
+define('MDB2_PORTABILITY_NUMROWS', 8);
+
+/**
+ * Portability: makes certain error messages in certain drivers compatible
+ * with those from other DBMS's.
+ *
+ * + mysql, mysqli:  change unique/primary key constraints
+ *   MDB2_ERROR_ALREADY_EXISTS -> MDB2_ERROR_CONSTRAINT
+ *
+ * + odbc(access):  MS's ODBC driver reports 'no such field' as code
+ *   07001, which means 'too few parameters.'  When this option is on
+ *   that code gets mapped to MDB2_ERROR_NOSUCHFIELD.
+ *
+ * @see MDB2_Driver_Common::setOption()
+ */
+define('MDB2_PORTABILITY_ERRORS', 16);
+
+/**
+ * Portability: convert empty values to null strings in data output by
+ * query*() and fetch*().
+ * @see MDB2_Driver_Common::setOption()
+ */
+define('MDB2_PORTABILITY_EMPTY_TO_NULL', 32);
+
+/**
+ * Portability: removes database/table qualifiers from associative indexes
+ * @see MDB2_Driver_Common::setOption()
+ */
+define('MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES', 64);
+
+/**
+ * Portability: turn on all portability features.
+ * @see MDB2_Driver_Common::setOption()
+ */
+define('MDB2_PORTABILITY_ALL', 127);
+
+// }}}
+// {{{ Globals for class instance tracking
+
+/**
+ * These are global variables that are used to track the various class instances
+ */
+
+$GLOBALS['_MDB2_databases'] = array();
+$GLOBALS['_MDB2_dsninfo_default'] = array(
+    'phptype'  => false,
+    'dbsyntax' => false,
+    'username' => false,
+    'password' => false,
+    'protocol' => false,
+    'hostspec' => false,
+    'port'     => false,
+    'socket'   => false,
+    'database' => false,
+    'mode'     => false,
+);
+
+// }}}
+// {{{ class MDB2
+
+/**
+ * The main 'MDB2' class is simply a container class with some static
+ * methods for creating DB objects as well as some utility functions
+ * common to all parts of DB.
+ *
+ * The object model of MDB2 is as follows (indentation means inheritance):
+ *
+ * MDB2          The main MDB2 class.  This is simply a utility class
+ *              with some 'static' methods for creating MDB2 objects as
+ *              well as common utility functions for other MDB2 classes.
+ *
+ * MDB2_Driver_Common   The base for each MDB2 implementation.  Provides default
+ * |            implementations (in OO lingo virtual methods) for
+ * |            the actual DB implementations as well as a bunch of
+ * |            query utility functions.
+ * |
+ * +-MDB2_Driver_mysql  The MDB2 implementation for MySQL. Inherits MDB2_Driver_Common.
+ *              When calling MDB2::factory or MDB2::connect for MySQL
+ *              connections, the object returned is an instance of this
+ *              class.
+ * +-MDB2_Driver_pgsql  The MDB2 implementation for PostGreSQL. Inherits MDB2_Driver_Common.
+ *              When calling MDB2::factory or MDB2::connect for PostGreSQL
+ *              connections, the object returned is an instance of this
+ *              class.
+ *
+ * @package     MDB2
+ * @category    Database
+ * @author      Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2
+{
+    // {{{ function setOptions(&$db, $options)
+
+    /**
+     * set option array   in an exiting database object
+     *
+     * @param   MDB2_Driver_Common  MDB2 object
+     * @param   array   An associative array of option names and their values.
+     *
+     * @return mixed   MDB2_OK or a PEAR Error object
+     *
+     * @access  public
+     */
+    function setOptions(&$db, $options)
+    {
+        if (is_array($options)) {
+            foreach ($options as $option => $value) {
+                $test = $db->setOption($option, $value);
+                if (PEAR::isError($test)) {
+                    return $test;
+                }
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function classExists($classname)
+
+    /**
+     * Checks if a class exists without triggering __autoload
+     *
+     * @param   string  classname
+     *
+     * @return  bool    true success and false on error
+     * @static
+     * @access  public
+     */
+    function classExists($classname)
+    {
+        if (version_compare(phpversion(), "5.0", ">=")) {
+            return class_exists($classname, false);
+        }
+        return class_exists($classname);
+    }
+
+    // }}}
+    // {{{ function loadClass($class_name, $debug)
+
+    /**
+     * Loads a PEAR class.
+     *
+     * @param   string  classname to load
+     * @param   bool    if errors should be suppressed
+     *
+     * @return  mixed   true success or PEAR_Error on failure
+     *
+     * @access  public
+     */
+    function loadClass($class_name, $debug)
+    {
+        if (!MDB2::classExists($class_name)) {
+            $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
+            if ($debug) {
+                $include = include_once($file_name);
+            } else {
+                $include = @include_once($file_name);
+            }
+            if (!$include) {
+                if (!MDB2::fileExists($file_name)) {
+                    $msg = "unable to find package '$class_name' file '$file_name'";
+                } else {
+                    $msg = "unable to load class '$class_name' from file '$file_name'";
+                }
+                $err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, $msg);
+                return $err;
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function &factory($dsn, $options = false)
+
+    /**
+     * Create a new MDB2 object for the specified database type
+     *
+     * IMPORTANT: In order for MDB2 to work properly it is necessary that
+     * you make sure that you work with a reference of the original
+     * object instead of a copy (this is a PHP4 quirk).
+     *
+     * For example:
+     *     $db =& MDB2::factory($dsn);
+     *          ^^
+     * And not:
+     *     $db = MDB2::factory($dsn);
+     *
+     * @param   mixed   'data source name', see the MDB2::parseDSN
+     *                      method for a description of the dsn format.
+     *                      Can also be specified as an array of the
+     *                      format returned by MDB2::parseDSN.
+     * @param   array   An associative array of option names and
+     *                            their values.
+     *
+     * @return  mixed   a newly created MDB2 object, or false on error
+     *
+     * @access  public
+     */
+    function &factory($dsn, $options = false)
+    {
+        $dsninfo = MDB2::parseDSN($dsn);
+        if (empty($dsninfo['phptype'])) {
+            $err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND,
+                null, null, 'no RDBMS driver specified');
+            return $err;
+        }
+        $class_name = 'MDB2_Driver_'.$dsninfo['phptype'];
+
+        $debug = (!empty($options['debug']));
+        $err = MDB2::loadClass($class_name, $debug);
+        if (PEAR::isError($err)) {
+            return $err;
+        }
+
+        $db =& new $class_name();
+        $db->setDSN($dsninfo);
+        $err = MDB2::setOptions($db, $options);
+        if (PEAR::isError($err)) {
+            return $err;
+        }
+
+        return $db;
+    }
+
+    // }}}
+    // {{{ function &connect($dsn, $options = false)
+
+    /**
+     * Create a new MDB2 connection object and connect to the specified
+     * database
+     *
+     * IMPORTANT: In order for MDB2 to work properly it is necessary that
+     * you make sure that you work with a reference of the original
+     * object instead of a copy (this is a PHP4 quirk).
+     *
+     * For example:
+     *     $db =& MDB2::connect($dsn);
+     *          ^^
+     * And not:
+     *     $db = MDB2::connect($dsn);
+     *          ^^
+     *
+     * @param   mixed   'data source name', see the MDB2::parseDSN
+     *                            method for a description of the dsn format.
+     *                            Can also be specified as an array of the
+     *                            format returned by MDB2::parseDSN.
+     * @param   array   An associative array of option names and
+     *                            their values.
+     *
+     * @return  mixed   a newly created MDB2 connection object, or a MDB2
+     *                  error object on error
+     *
+     * @access  public
+     * @see     MDB2::parseDSN
+     */
+    function &connect($dsn, $options = false)
+    {
+        $db =& MDB2::factory($dsn, $options);
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $err = $db->connect();
+        if (PEAR::isError($err)) {
+            $dsn = $db->getDSN('string', 'xxx');
+            $db->disconnect();
+            $err->addUserInfo($dsn);
+            return $err;
+        }
+
+        return $db;
+    }
+
+    // }}}
+    // {{{ function &singleton($dsn = null, $options = false)
+
+    /**
+     * Returns a MDB2 connection with the requested DSN.
+     * A new MDB2 connection object is only created if no object with the
+     * requested DSN exists yet.
+     *
+     * IMPORTANT: In order for MDB2 to work properly it is necessary that
+     * you make sure that you work with a reference of the original
+     * object instead of a copy (this is a PHP4 quirk).
+     *
+     * For example:
+     *     $db =& MDB2::singleton($dsn);
+     *          ^^
+     * And not:
+     *     $db = MDB2::singleton($dsn);
+     *          ^^
+     *
+     * @param   mixed   'data source name', see the MDB2::parseDSN
+     *                            method for a description of the dsn format.
+     *                            Can also be specified as an array of the
+     *                            format returned by MDB2::parseDSN.
+     * @param   array   An associative array of option names and
+     *                            their values.
+     *
+     * @return  mixed   a newly created MDB2 connection object, or a MDB2
+     *                  error object on error
+     *
+     * @access  public
+     * @see     MDB2::parseDSN
+     */
+    function &singleton($dsn = null, $options = false)
+    {
+        if ($dsn) {
+            $dsninfo = MDB2::parseDSN($dsn);
+            $dsninfo = array_merge($GLOBALS['_MDB2_dsninfo_default'], $dsninfo);
+            $keys = array_keys($GLOBALS['_MDB2_databases']);
+            for ($i=0, $j=count($keys); $i<$j; ++$i) {
+                if (isset($GLOBALS['_MDB2_databases'][$keys[$i]])) {
+                    $tmp_dsn = $GLOBALS['_MDB2_databases'][$keys[$i]]->getDSN('array');
+                    if (count(array_diff_assoc($tmp_dsn, $dsninfo)) == 0) {
+                        MDB2::setOptions($GLOBALS['_MDB2_databases'][$keys[$i]], $options);
+                        return $GLOBALS['_MDB2_databases'][$keys[$i]];
+                    }
+                }
+            }
+        } elseif (is_array($GLOBALS['_MDB2_databases']) && reset($GLOBALS['_MDB2_databases'])) {
+            $db =& $GLOBALS['_MDB2_databases'][key($GLOBALS['_MDB2_databases'])];
+            return $db;
+        }
+        $db =& MDB2::factory($dsn, $options);
+        return $db;
+    }
+
+    // }}}
+    // {{{ function areEquals()
+
+    /**
+     * It looks like there's a memory leak in array_diff() in PHP 5.1.x,
+     * so use this method instead.
+     * @see http://pear.php.net/bugs/bug.php?id=11790
+     *
+     * @param array $arr1
+     * @param array $arr2
+     * @return boolean
+     */
+    function areEquals($arr1, $arr2)
+    {
+        if (count($arr1) != count($arr2)) {
+            return false;
+        }
+        foreach (array_keys($arr1) as $k) {
+            if (!array_key_exists($k, $arr2) || $arr1[$k] != $arr2[$k]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    // }}}
+    // {{{ function loadFile($file)
+
+    /**
+     * load a file (like 'Date')
+     *
+     * @param   string  name of the file in the MDB2 directory (without '.php')
+     *
+     * @return  string  name of the file that was included
+     *
+     * @access  public
+     */
+    function loadFile($file)
+    {
+        $file_name = 'MDB2'.DIRECTORY_SEPARATOR.$file.'.php';
+        if (!MDB2::fileExists($file_name)) {
+            return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'unable to find: '.$file_name);
+        }
+        if (!include_once($file_name)) {
+            return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'unable to load driver class: '.$file_name);
+        }
+        return $file_name;
+    }
+
+    // }}}
+    // {{{ function apiVersion()
+
+    /**
+     * Return the MDB2 API version
+     *
+     * @return  string  the MDB2 API version number
+     *
+     * @access  public
+     */
+    function apiVersion()
+    {
+        return '2.5.0a2';
+    }
+
+    // }}}
+    // {{{ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null)
+
+    /**
+     * This method is used to communicate an error and invoke error
+     * callbacks etc.  Basically a wrapper for PEAR::raiseError
+     * without the message string.
+     *
+     * @param   mixed  int error code
+     *
+     * @param   int    error mode, see PEAR_Error docs
+     *
+     * @param   mixed  If error mode is PEAR_ERROR_TRIGGER, this is the
+     *                 error level (E_USER_NOTICE etc).  If error mode is
+     *                 PEAR_ERROR_CALLBACK, this is the callback function,
+     *                 either as a function name, or as an array of an
+     *                 object and method name.  For other error modes this
+     *                 parameter is ignored.
+     *
+     * @param   string Extra debug information.  Defaults to the last
+     *                 query and native error code.
+     *
+     * @return PEAR_Error instance of a PEAR Error object
+     *
+     * @access  private
+     * @see     PEAR_Error
+     */
+    function &raiseError($code = null,
+                         $mode = null,
+                         $options = null,
+                         $userinfo = null,
+                         $dummy1 = null,
+                         $dummy2 = null,
+                         $dummy3 = false)
+    {
+        $err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true);
+        return $err;
+    }
+
+    // }}}
+    // {{{ function isError($data, $code = null)
+
+    /**
+     * Tell whether a value is a MDB2 error.
+     *
+     * @param   mixed   the value to test
+     * @param   int     if is an error object, return true
+     *                        only if $code is a string and
+     *                        $db->getMessage() == $code or
+     *                        $code is an integer and $db->getCode() == $code
+     *
+     * @return  bool    true if parameter is an error
+     *
+     * @access  public
+     */
+    function isError($data, $code = null)
+    {
+        if (is_a($data, 'MDB2_Error')) {
+            if (is_null($code)) {
+                return true;
+            } elseif (is_string($code)) {
+                return $data->getMessage() === $code;
+            } else {
+                $code = (array)$code;
+                return in_array($data->getCode(), $code);
+            }
+        }
+        return false;
+    }
+
+    // }}}
+    // {{{ function isConnection($value)
+
+    /**
+     * Tell whether a value is a MDB2 connection
+     *
+     * @param   mixed   value to test
+     *
+     * @return  bool    whether $value is a MDB2 connection
+     *
+     * @access  public
+     */
+    function isConnection($value)
+    {
+        return is_a($value, 'MDB2_Driver_Common');
+    }
+
+    // }}}
+    // {{{ function isResult($value)
+
+    /**
+     * Tell whether a value is a MDB2 result
+     *
+     * @param   mixed   value to test
+     *
+     * @return  bool    whether $value is a MDB2 result
+     *
+     * @access  public
+     */
+    function isResult($value)
+    {
+        return is_a($value, 'MDB2_Result');
+    }
+
+    // }}}
+    // {{{ function isResultCommon($value)
+
+    /**
+     * Tell whether a value is a MDB2 result implementing the common interface
+     *
+     * @param   mixed   value to test
+     *
+     * @return  bool    whether $value is a MDB2 result implementing the common interface
+     *
+     * @access  public
+     */
+    function isResultCommon($value)
+    {
+        return is_a($value, 'MDB2_Result_Common');
+    }
+
+    // }}}
+    // {{{ function isStatement($value)
+
+    /**
+     * Tell whether a value is a MDB2 statement interface
+     *
+     * @param   mixed   value to test
+     *
+     * @return  bool    whether $value is a MDB2 statement interface
+     *
+     * @access  public
+     */
+    function isStatement($value)
+    {
+        return is_a($value, 'MDB2_Statement_Common');
+    }
+
+    // }}}
+    // {{{ function errorMessage($value = null)
+
+    /**
+     * Return a textual error message for a MDB2 error code
+     *
+     * @param   int|array   integer error code,
+                                null to get the current error code-message map,
+                                or an array with a new error code-message map
+     *
+     * @return  string  error message, or false if the error code was
+     *                  not recognized
+     *
+     * @access  public
+     */
+    function errorMessage($value = null)
+    {
+        static $errorMessages;
+
+        if (is_array($value)) {
+            $errorMessages = $value;
+            return MDB2_OK;
+        }
+
+        if (!isset($errorMessages)) {
+            $errorMessages = array(
+                MDB2_OK                       => 'no error',
+                MDB2_ERROR                    => 'unknown error',
+                MDB2_ERROR_ALREADY_EXISTS     => 'already exists',
+                MDB2_ERROR_CANNOT_CREATE      => 'can not create',
+                MDB2_ERROR_CANNOT_ALTER       => 'can not alter',
+                MDB2_ERROR_CANNOT_REPLACE     => 'can not replace',
+                MDB2_ERROR_CANNOT_DELETE      => 'can not delete',
+                MDB2_ERROR_CANNOT_DROP        => 'can not drop',
+                MDB2_ERROR_CONSTRAINT         => 'constraint violation',
+                MDB2_ERROR_CONSTRAINT_NOT_NULL=> 'null value violates not-null constraint',
+                MDB2_ERROR_DIVZERO            => 'division by zero',
+                MDB2_ERROR_INVALID            => 'invalid',
+                MDB2_ERROR_INVALID_DATE       => 'invalid date or time',
+                MDB2_ERROR_INVALID_NUMBER     => 'invalid number',
+                MDB2_ERROR_MISMATCH           => 'mismatch',
+                MDB2_ERROR_NODBSELECTED       => 'no database selected',
+                MDB2_ERROR_NOSUCHFIELD        => 'no such field',
+                MDB2_ERROR_NOSUCHTABLE        => 'no such table',
+                MDB2_ERROR_NOT_CAPABLE        => 'MDB2 backend not capable',
+                MDB2_ERROR_NOT_FOUND          => 'not found',
+                MDB2_ERROR_NOT_LOCKED         => 'not locked',
+                MDB2_ERROR_SYNTAX             => 'syntax error',
+                MDB2_ERROR_UNSUPPORTED        => 'not supported',
+                MDB2_ERROR_VALUE_COUNT_ON_ROW => 'value count on row',
+                MDB2_ERROR_INVALID_DSN        => 'invalid DSN',
+                MDB2_ERROR_CONNECT_FAILED     => 'connect failed',
+                MDB2_ERROR_NEED_MORE_DATA     => 'insufficient data supplied',
+                MDB2_ERROR_EXTENSION_NOT_FOUND=> 'extension not found',
+                MDB2_ERROR_NOSUCHDB           => 'no such database',
+                MDB2_ERROR_ACCESS_VIOLATION   => 'insufficient permissions',
+                MDB2_ERROR_LOADMODULE         => 'error while including on demand module',
+                MDB2_ERROR_TRUNCATED          => 'truncated',
+                MDB2_ERROR_DEADLOCK           => 'deadlock detected',
+            );
+        }
+
+        if (is_null($value)) {
+            return $errorMessages;
+        }
+
+        if (PEAR::isError($value)) {
+            $value = $value->getCode();
+        }
+
+        return isset($errorMessages[$value]) ?
+           $errorMessages[$value] : $errorMessages[MDB2_ERROR];
+    }
+
+    // }}}
+    // {{{ function parseDSN($dsn)
+
+    /**
+     * Parse a data source name.
+     *
+     * Additional keys can be added by appending a URI query string to the
+     * end of the DSN.
+     *
+     * The format of the supplied DSN is in its fullest form:
+     * <code>
+     *  phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true
+     * </code>
+     *
+     * Most variations are allowed:
+     * <code>
+     *  phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644
+     *  phptype://username:password@hostspec/database_name
+     *  phptype://username:password@hostspec
+     *  phptype://username@hostspec
+     *  phptype://hostspec/database
+     *  phptype://hostspec
+     *  phptype(dbsyntax)
+     *  phptype
+     * </code>
+     *
+     * @param   string  Data Source Name to be parsed
+     *
+     * @return  array   an associative array with the following keys:
+     *  + phptype:  Database backend used in PHP (mysql, odbc etc.)
+     *  + dbsyntax: Database used with regards to SQL syntax etc.
+     *  + protocol: Communication protocol to use (tcp, unix etc.)
+     *  + hostspec: Host specification (hostname[:port])
+     *  + database: Database to use on the DBMS server
+     *  + username: User name for login
+     *  + password: Password for login
+     *
+     * @access  public
+     * @author  Tomas V.V.Cox <cox@idecnet.com>
+     */
+    function parseDSN($dsn)
+    {
+        $parsed = $GLOBALS['_MDB2_dsninfo_default'];
+
+        if (is_array($dsn)) {
+            $dsn = array_merge($parsed, $dsn);
+            if (!$dsn['dbsyntax']) {
+                $dsn['dbsyntax'] = $dsn['phptype'];
+            }
+            return $dsn;
+        }
+
+        // Find phptype and dbsyntax
+        if (($pos = strpos($dsn, '://')) !== false) {
+            $str = substr($dsn, 0, $pos);
+            $dsn = substr($dsn, $pos + 3);
+        } else {
+            $str = $dsn;
+            $dsn = null;
+        }
+
+        // Get phptype and dbsyntax
+        // $str => phptype(dbsyntax)
+        if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
+            $parsed['phptype']  = $arr[1];
+            $parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2];
+        } else {
+            $parsed['phptype']  = $str;
+            $parsed['dbsyntax'] = $str;
+        }
+
+        if (!count($dsn)) {
+            return $parsed;
+        }
+
+        // Get (if found): username and password
+        // $dsn => username:password@protocol+hostspec/database
+        if (($at = strrpos($dsn,'@')) !== false) {
+            $str = substr($dsn, 0, $at);
+            $dsn = substr($dsn, $at + 1);
+            if (($pos = strpos($str, ':')) !== false) {
+                $parsed['username'] = rawurldecode(substr($str, 0, $pos));
+                $parsed['password'] = rawurldecode(substr($str, $pos + 1));
+            } else {
+                $parsed['username'] = rawurldecode($str);
+            }
+        }
+
+        // Find protocol and hostspec
+
+        // $dsn => proto(proto_opts)/database
+        if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {
+            $proto       = $match[1];
+            $proto_opts  = $match[2] ? $match[2] : false;
+            $dsn         = $match[3];
+
+        // $dsn => protocol+hostspec/database (old format)
+        } else {
+            if (strpos($dsn, '+') !== false) {
+                list($proto, $dsn) = explode('+', $dsn, 2);
+            }
+            if (   strpos($dsn, '//') === 0
+                && strpos($dsn, '/', 2) !== false
+                && $parsed['phptype'] == 'oci8'
+            ) {
+                //oracle's "Easy Connect" syntax:
+                //"username/password@[//]host[:port][/service_name]"
+                //e.g. "scott/tiger@//mymachine:1521/oracle"
+                $proto_opts = $dsn;
+                $dsn = null;
+            } elseif (strpos($dsn, '/') !== false) {
+                list($proto_opts, $dsn) = explode('/', $dsn, 2);
+            } else {
+                $proto_opts = $dsn;
+                $dsn = null;
+            }
+        }
+
+        // process the different protocol options
+        $parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp';
+        $proto_opts = rawurldecode($proto_opts);
+        if (strpos($proto_opts, ':') !== false) {
+            list($proto_opts, $parsed['port']) = explode(':', $proto_opts);
+        }
+        if ($parsed['protocol'] == 'tcp') {
+            $parsed['hostspec'] = $proto_opts;
+        } elseif ($parsed['protocol'] == 'unix') {
+            $parsed['socket'] = $proto_opts;
+        }
+
+        // Get dabase if any
+        // $dsn => database
+        if ($dsn) {
+            // /database
+            if (($pos = strpos($dsn, '?')) === false) {
+                $parsed['database'] = $dsn;
+            // /database?param1=value1&param2=value2
+            } else {
+                $parsed['database'] = substr($dsn, 0, $pos);
+                $dsn = substr($dsn, $pos + 1);
+                if (strpos($dsn, '&') !== false) {
+                    $opts = explode('&', $dsn);
+                } else { // database?param1=value1
+                    $opts = array($dsn);
+                }
+                foreach ($opts as $opt) {
+                    list($key, $value) = explode('=', $opt);
+                    if (!isset($parsed[$key])) {
+                        // don't allow params overwrite
+                        $parsed[$key] = rawurldecode($value);
+                    }
+                }
+            }
+        }
+
+        return $parsed;
+    }
+
+    // }}}
+    // {{{ function fileExists($file)
+
+    /**
+     * Checks if a file exists in the include path
+     *
+     * @param   string  filename
+     *
+     * @return  bool    true success and false on error
+     *
+     * @access  public
+     */
+    function fileExists($file)
+    {
+        // safe_mode does notwork with is_readable()
+        if (!@ini_get('safe_mode')) {
+             $dirs = explode(PATH_SEPARATOR, ini_get('include_path'));
+             foreach ($dirs as $dir) {
+                 if (is_readable($dir . DIRECTORY_SEPARATOR . $file)) {
+                     return true;
+                 }
+            }
+        } else {
+            $fp = @fopen($file, 'r', true);
+            if (is_resource($fp)) {
+                @fclose($fp);
+                return true;
+            }
+        }
+        return false;
+    }
+    // }}}
+}
+
+// }}}
+// {{{ class MDB2_Error extends PEAR_Error
+
+/**
+ * MDB2_Error implements a class for reporting portable database error
+ * messages.
+ *
+ * @package     MDB2
+ * @category    Database
+ * @author Stig Bakken <ssb@fast.no>
+ */
+class MDB2_Error extends PEAR_Error
+{
+    // {{{ constructor: function MDB2_Error($code = MDB2_ERROR, $mode = PEAR_ERROR_RETURN, $level = E_USER_NOTICE, $debuginfo = null)
+
+    /**
+     * MDB2_Error constructor.
+     *
+     * @param   mixed   MDB2 error code, or string with error message.
+     * @param   int     what 'error mode' to operate in
+     * @param   int     what error level to use for $mode & PEAR_ERROR_TRIGGER
+     * @param   mixed   additional debug info, such as the last query
+     */
+    function MDB2_Error($code = MDB2_ERROR, $mode = PEAR_ERROR_RETURN,
+              $level = E_USER_NOTICE, $debuginfo = null, $dummy = null)
+    {
+        if (is_null($code)) {
+            $code = MDB2_ERROR;
+        }
+        $this->PEAR_Error('MDB2 Error: '.MDB2::errorMessage($code), $code,
+            $mode, $level, $debuginfo);
+    }
+
+    // }}}
+}
+
+// }}}
+// {{{ class MDB2_Driver_Common extends PEAR
+
+/**
+ * MDB2_Driver_Common: Base class that is extended by each MDB2 driver
+ *
+ * @package     MDB2
+ * @category    Database
+ * @author      Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Common extends PEAR
+{
+    // {{{ Variables (Properties)
+
+    /**
+     * index of the MDB2 object within the $GLOBALS['_MDB2_databases'] array
+     * @var     int
+     * @access  public
+     */
+    var $db_index = 0;
+
+    /**
+     * DSN used for the next query
+     * @var     array
+     * @access  protected
+     */
+    var $dsn = array();
+
+    /**
+     * DSN that was used to create the current connection
+     * @var     array
+     * @access  protected
+     */
+    var $connected_dsn = array();
+
+    /**
+     * connection resource
+     * @var     mixed
+     * @access  protected
+     */
+    var $connection = 0;
+
+    /**
+     * if the current opened connection is a persistent connection
+     * @var     bool
+     * @access  protected
+     */
+    var $opened_persistent;
+
+    /**
+     * the name of the database for the next query
+     * @var     string
+     * @access  protected
+     */
+    var $database_name = '';
+
+    /**
+     * the name of the database currently selected
+     * @var     string
+     * @access  protected
+     */
+    var $connected_database_name = '';
+
+    /**
+     * server version information
+     * @var     string
+     * @access  protected
+     */
+    var $connected_server_info = '';
+
+    /**
+     * list of all supported features of the given driver
+     * @var     array
+     * @access  public
+     */
+    var $supported = array(
+        'sequences' => false,
+        'indexes' => false,
+        'affected_rows' => false,
+        'summary_functions' => false,
+        'order_by_text' => false,
+        'transactions' => false,
+        'savepoints' => false,
+        'current_id' => false,
+        'limit_queries' => false,
+        'LOBs' => false,
+        'replace' => false,
+        'sub_selects' => false,
+        'auto_increment' => false,
+        'primary_key' => false,
+        'result_introspection' => false,
+        'prepared_statements' => false,
+        'identifier_quoting' => false,
+        'pattern_escaping' => false,
+        'new_link' => false,
+    );
+
+    /**
+     * Array of supported options that can be passed to the MDB2 instance.
+     * 
+     * The options can be set during object creation, using
+     * MDB2::connect(), MDB2::factory() or MDB2::singleton(). The options can 
+     * also be set after the object is created, using MDB2::setOptions() or 
+     * MDB2_Driver_Common::setOption().
+     * The list of available option includes:
+     * <ul>
+     *  <li>$options['ssl'] -> boolean: determines if ssl should be used for connections</li>
+     *  <li>$options['field_case'] -> CASE_LOWER|CASE_UPPER: determines what case to force on field/table names</li>
+     *  <li>$options['disable_query'] -> boolean: determines if queries should be executed</li>
+     *  <li>$options['result_class'] -> string: class used for result sets</li>
+     *  <li>$options['buffered_result_class'] -> string: class used for buffered result sets</li>
+     *  <li>$options['result_wrap_class'] -> string: class used to wrap result sets into</li>
+     *  <li>$options['result_buffering'] -> boolean should results be buffered or not?</li>
+     *  <li>$options['fetch_class'] -> string: class to use when fetch mode object is used</li>
+     *  <li>$options['persistent'] -> boolean: persistent connection?</li>
+     *  <li>$options['debug'] -> integer: numeric debug level</li>
+     *  <li>$options['debug_handler'] -> string: function/method that captures debug messages</li>
+     *  <li>$options['debug_expanded_output'] -> bool: BC option to determine if more context information should be send to the debug handler</li>
+     *  <li>$options['default_text_field_length'] -> integer: default text field length to use</li>
+     *  <li>$options['lob_buffer_length'] -> integer: LOB buffer length</li>
+     *  <li>$options['log_line_break'] -> string: line-break format</li>
+     *  <li>$options['idxname_format'] -> string: pattern for index name</li>
+     *  <li>$options['seqname_format'] -> string: pattern for sequence name</li>
+     *  <li>$options['savepoint_format'] -> string: pattern for auto generated savepoint names</li>
+     *  <li>$options['statement_format'] -> string: pattern for prepared statement names</li>
+     *  <li>$options['seqcol_name'] -> string: sequence column name</li>
+     *  <li>$options['quote_identifier'] -> boolean: if identifier quoting should be done when check_option is used</li>
+     *  <li>$options['use_transactions'] -> boolean: if transaction use should be enabled</li>
+     *  <li>$options['decimal_places'] -> integer: number of decimal places to handle</li>
+     *  <li>$options['portability'] -> integer: portability constant</li>
+     *  <li>$options['modules'] -> array: short to long module name mapping for __call()</li>
+     *  <li>$options['emulate_prepared'] -> boolean: force prepared statements to be emulated</li>
+     *  <li>$options['datatype_map'] -> array: map user defined datatypes to other primitive datatypes</li>
+     *  <li>$options['datatype_map_callback'] -> array: callback function/method that should be called</li>
+     *  <li>$options['bindname_format'] -> string: regular expression pattern for named parameters
+     * </ul>
+     *
+     * @var     array
+     * @access  public
+     * @see     MDB2::connect()
+     * @see     MDB2::factory()
+     * @see     MDB2::singleton()
+     * @see     MDB2_Driver_Common::setOption()
+     */
+    var $options = array(
+        'ssl' => false,
+        'field_case' => CASE_LOWER,
+        'disable_query' => false,
+        'result_class' => 'MDB2_Result_%s',
+        'buffered_result_class' => 'MDB2_BufferedResult_%s',
+        'result_wrap_class' => false,
+        'result_buffering' => true,
+        'fetch_class' => 'stdClass',
+        'persistent' => false,
+        'debug' => 0,
+        'debug_handler' => 'MDB2_defaultDebugOutput',
+        'debug_expanded_output' => false,
+        'default_text_field_length' => 4096,
+        'lob_buffer_length' => 8192,
+        'log_line_break' => "\n",
+        'idxname_format' => '%s_idx',
+        'seqname_format' => '%s_seq',
+        'savepoint_format' => 'MDB2_SAVEPOINT_%s',
+        'statement_format' => 'MDB2_STATEMENT_%1$s_%2$s',
+        'seqcol_name' => 'sequence',
+        'quote_identifier' => false,
+        'use_transactions' => true,
+        'decimal_places' => 2,
+        'portability' => MDB2_PORTABILITY_ALL,
+        'modules' => array(
+            'ex' => 'Extended',
+            'dt' => 'Datatype',
+            'mg' => 'Manager',
+            'rv' => 'Reverse',
+            'na' => 'Native',
+            'fc' => 'Function',
+        ),
+        'emulate_prepared' => false,
+        'datatype_map' => array(),
+        'datatype_map_callback' => array(),
+        'nativetype_map_callback' => array(),
+        'lob_allow_url_include' => false,
+        'bindname_format' => '(?:\d+)|(?:[a-zA-Z][a-zA-Z0-9_]*)',
+    );
+
+    /**
+     * string array
+     * @var     string
+     * @access  protected
+     */
+    var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => false, 'escape_pattern' => false);
+
+    /**
+     * identifier quoting
+     * @var     array
+     * @access  protected
+     */
+    var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"');
+
+    /**
+     * sql comments
+     * @var     array
+     * @access  protected
+     */
+    var $sql_comments = array(
+        array('start' => '--', 'end' => "\n", 'escape' => false),
+        array('start' => '/*', 'end' => '*/', 'escape' => false),
+    );
+
+    /**
+     * comparision wildcards
+     * @var     array
+     * @access  protected
+     */
+    var $wildcards = array('%', '_');
+
+    /**
+     * column alias keyword
+     * @var     string
+     * @access  protected
+     */
+    var $as_keyword = ' AS ';
+
+    /**
+     * warnings
+     * @var     array
+     * @access  protected
+     */
+    var $warnings = array();
+
+    /**
+     * string with the debugging information
+     * @var     string
+     * @access  public
+     */
+    var $debug_output = '';
+
+    /**
+     * determine if there is an open transaction
+     * @var     bool
+     * @access  protected
+     */
+    var $in_transaction = false;
+
+    /**
+     * the smart transaction nesting depth
+     * @var     int
+     * @access  protected
+     */
+    var $nested_transaction_counter = null;
+
+    /**
+     * the first error that occured inside a nested transaction
+     * @var     MDB2_Error|bool
+     * @access  protected
+     */
+    var $has_transaction_error = false;
+
+    /**
+     * result offset used in the next query
+     * @var     int
+     * @access  protected
+     */
+    var $offset = 0;
+
+    /**
+     * result limit used in the next query
+     * @var     int
+     * @access  protected
+     */
+    var $limit = 0;
+
+    /**
+     * Database backend used in PHP (mysql, odbc etc.)
+     * @var     string
+     * @access  public
+     */
+    var $phptype;
+
+    /**
+     * Database used with regards to SQL syntax etc.
+     * @var     string
+     * @access  public
+     */
+    var $dbsyntax;
+
+    /**
+     * the last query sent to the driver
+     * @var     string
+     * @access  public
+     */
+    var $last_query;
+
+    /**
+     * the default fetchmode used
+     * @var     int
+     * @access  protected
+     */
+    var $fetchmode = MDB2_FETCHMODE_ORDERED;
+
+    /**
+     * array of module instances
+     * @var     array
+     * @access  protected
+     */
+    var $modules = array();
+
+    /**
+     * determines of the PHP4 destructor emulation has been enabled yet
+     * @var     array
+     * @access  protected
+     */
+    var $destructor_registered = true;
+
+    // }}}
+    // {{{ constructor: function __construct()
+
+    /**
+     * Constructor
+     */
+    function __construct()
+    {
+        end($GLOBALS['_MDB2_databases']);
+        $db_index = key($GLOBALS['_MDB2_databases']) + 1;
+        $GLOBALS['_MDB2_databases'][$db_index] = &$this;
+        $this->db_index = $db_index;
+    }
+
+    // }}}
+    // {{{ function MDB2_Driver_Common()
+
+    /**
+     * PHP 4 Constructor
+     */
+    function MDB2_Driver_Common()
+    {
+        $this->destructor_registered = false;
+        $this->__construct();
+    }
+
+    // }}}
+    // {{{ destructor: function __destruct()
+
+    /**
+     *  Destructor
+     */
+    function __destruct()
+    {
+        $this->disconnect(false);
+    }
+
+    // }}}
+    // {{{ function free()
+
+    /**
+     * Free the internal references so that the instance can be destroyed
+     *
+     * @return  bool    true on success, false if result is invalid
+     *
+     * @access  public
+     */
+    function free()
+    {
+        unset($GLOBALS['_MDB2_databases'][$this->db_index]);
+        unset($this->db_index);
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function __toString()
+
+    /**
+     * String conversation
+     *
+     * @return  string representation of the object
+     *
+     * @access  public
+     */
+    function __toString()
+    {
+        $info = get_class($this);
+        $info.= ': (phptype = '.$this->phptype.', dbsyntax = '.$this->dbsyntax.')';
+        if ($this->connection) {
+            $info.= ' [connected]';
+        }
+        return $info;
+    }
+
+    // }}}
+    // {{{ function errorInfo($error = null)
+
+    /**
+     * This method is used to collect information about an error
+     *
+     * @param   mixed   error code or resource
+     *
+     * @return  array   with MDB2 errorcode, native error code, native message
+     *
+     * @access  public
+     */
+    function errorInfo($error = null)
+    {
+        return array($error, null, null);
+    }
+
+    // }}}
+    // {{{ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null)
+
+    /**
+     * This method is used to communicate an error and invoke error
+     * callbacks etc.  Basically a wrapper for PEAR::raiseError
+     * without the message string.
+     *
+     * @param   mixed   integer error code, or a PEAR error object (all other
+     *                  parameters are ignored if this parameter is an object
+     * @param   int     error mode, see PEAR_Error docs
+     * @param   mixed   If error mode is PEAR_ERROR_TRIGGER, this is the
+         *              error level (E_USER_NOTICE etc).  If error mode is
+     *                  PEAR_ERROR_CALLBACK, this is the callback function,
+     *                  either as a function name, or as an array of an
+     *                  object and method name.  For other error modes this
+     *                  parameter is ignored.
+     * @param   string  Extra debug information.  Defaults to the last
+     *                  query and native error code.
+     * @param   string  name of the method that triggered the error
+     *
+     * @return PEAR_Error   instance of a PEAR Error object
+     *
+     * @access  public
+     * @see     PEAR_Error
+     */
+    function &raiseError($code = null, $mode = null, $options = null, $userinfo = null, $method = null)
+    {
+        $userinfo = "[Error message: $userinfo]\n";
+        // The error is yet a MDB2 error object
+        if (PEAR::isError($code)) {
+            // because we use the static PEAR::raiseError, our global
+            // handler should be used if it is set
+            if (is_null($mode) && !empty($this->_default_error_mode)) {
+                $mode    = $this->_default_error_mode;
+                $options = $this->_default_error_options;
+            }
+            if (is_null($userinfo)) {
+                $userinfo = $code->getUserinfo();
+            }
+            $code = $code->getCode();
+        } elseif ($code == MDB2_ERROR_NOT_FOUND) {
+            // extension not loaded: don't call $this->errorInfo() or the script
+            // will die
+        } elseif (isset($this->connection)) {
+            if (!empty($this->last_query)) {
+                $userinfo.= "[Last executed query: {$this->last_query}]\n";
+            }
+            $native_errno = $native_msg = null;
+            list($code, $native_errno, $native_msg) = $this->errorInfo($code);
+            if (!is_null($native_errno) && $native_errno !== '') {
+                $userinfo.= "[Native code: $native_errno]\n";
+            }
+            if (!is_null($native_msg) && $native_msg !== '') {
+                $userinfo.= "[Native message: ". strip_tags($native_msg) ."]\n";
+            }
+            if (!is_null($method)) {
+                $userinfo = $method.': '.$userinfo;
+            }
+        }
+
+        $err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true);
+        if ($err->getMode() !== PEAR_ERROR_RETURN
+            && isset($this->nested_transaction_counter) && !$this->has_transaction_error) {
+            $this->has_transaction_error =& $err;
+        }
+        return $err;
+    }
+
+    // }}}
+    // {{{ function resetWarnings()
+
+    /**
+     * reset the warning array
+     *
+     * @return void
+     *
+     * @access  public
+     */
+    function resetWarnings()
+    {
+        $this->warnings = array();
+    }
+
+    // }}}
+    // {{{ function getWarnings()
+
+    /**
+     * Get all warnings in reverse order.
+     * This means that the last warning is the first element in the array
+     *
+     * @return  array   with warnings
+     *
+     * @access  public
+     * @see     resetWarnings()
+     */
+    function getWarnings()
+    {
+        return array_reverse($this->warnings);
+    }
+
+    // }}}
+    // {{{ function setFetchMode($fetchmode, $object_class = 'stdClass')
+
+    /**
+     * Sets which fetch mode should be used by default on queries
+     * on this connection
+     *
+     * @param   int     MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC
+     *                               or MDB2_FETCHMODE_OBJECT
+     * @param   string  the class name of the object to be returned
+     *                               by the fetch methods when the
+     *                               MDB2_FETCHMODE_OBJECT mode is selected.
+     *                               If no class is specified by default a cast
+     *                               to object from the assoc array row will be
+     *                               done.  There is also the possibility to use
+     *                               and extend the 'MDB2_row' class.
+     *
+     * @return  mixed   MDB2_OK or MDB2 Error Object
+     *
+     * @access  public
+     * @see     MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC, MDB2_FETCHMODE_OBJECT
+     */
+    function setFetchMode($fetchmode, $object_class = 'stdClass')
+    {
+        switch ($fetchmode) {
+        case MDB2_FETCHMODE_OBJECT:
+            $this->options['fetch_class'] = $object_class;
+        case MDB2_FETCHMODE_ORDERED:
+        case MDB2_FETCHMODE_ASSOC:
+            $this->fetchmode = $fetchmode;
+            break;
+        default:
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'invalid fetchmode mode', __FUNCTION__);
+        }
+
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function setOption($option, $value)
+
+    /**
+     * set the option for the db class
+     *
+     * @param   string  option name
+     * @param   mixed   value for the option
+     *
+     * @return  mixed   MDB2_OK or MDB2 Error Object
+     *
+     * @access  public
+     */
+    function setOption($option, $value)
+    {
+        if (array_key_exists($option, $this->options)) {
+            $this->options[$option] = $value;
+            return MDB2_OK;
+        }
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            "unknown option $option", __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function getOption($option)
+
+    /**
+     * Returns the value of an option
+     *
+     * @param   string  option name
+     *
+     * @return  mixed   the option value or error object
+     *
+     * @access  public
+     */
+    function getOption($option)
+    {
+        if (array_key_exists($option, $this->options)) {
+            return $this->options[$option];
+        }
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            "unknown option $option", __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function debug($message, $scope = '', $is_manip = null)
+
+    /**
+     * set a debug message
+     *
+     * @param   string  message that should be appended to the debug variable
+     * @param   string  usually the method name that triggered the debug call:
+     *                  for example 'query', 'prepare', 'execute', 'parameters',
+     *                  'beginTransaction', 'commit', 'rollback'
+     * @param   array   contains context information about the debug() call
+     *                  common keys are: is_manip, time, result etc.
+     *
+     * @return void
+     *
+     * @access  public
+     */
+    function debug($message, $scope = '', $context = array())
+    {
+        if ($this->options['debug'] && $this->options['debug_handler']) {
+            if (!$this->options['debug_expanded_output']) {
+                if (!empty($context['when']) && $context['when'] !== 'pre') {
+                    return null;
+                }
+                $context = empty($context['is_manip']) ? false : $context['is_manip'];
+            }
+            return call_user_func_array($this->options['debug_handler'], array(&$this, $scope, $message, $context));
+        }
+        return null;
+    }
+
+    // }}}
+    // {{{ function getDebugOutput()
+
+    /**
+     * output debug info
+     *
+     * @return  string  content of the debug_output class variable
+     *
+     * @access  public
+     */
+    function getDebugOutput()
+    {
+        return $this->debug_output;
+    }
+
+    // }}}
+    // {{{ function escape($text)
+
+    /**
+     * Quotes a string so it can be safely used in a query. It will quote
+     * the text so it can safely be used within a query.
+     *
+     * @param   string  the input string to quote
+     * @param   bool    escape wildcards
+     *
+     * @return  string  quoted string
+     *
+     * @access  public
+     */
+    function escape($text, $escape_wildcards = false)
+    {
+        if ($escape_wildcards) {
+            $text = $this->escapePattern($text);
+        }
+
+        $text = str_replace($this->string_quoting['end'], $this->string_quoting['escape'] . $this->string_quoting['end'], $text);
+        return $text;
+    }
+
+    // }}}
+    // {{{ function escapePattern($text)
+
+    /**
+     * Quotes pattern (% and _) characters in a string)
+     *
+     * @param   string  the input string to quote
+     *
+     * @return  string  quoted string
+     *
+     * @access  public
+     */
+    function escapePattern($text)
+    {
+        if ($this->string_quoting['escape_pattern']) {
+            $text = str_replace($this->string_quoting['escape_pattern'], $this->string_quoting['escape_pattern'] . $this->string_quoting['escape_pattern'], $text);
+            foreach ($this->wildcards as $wildcard) {
+                $text = str_replace($wildcard, $this->string_quoting['escape_pattern'] . $wildcard, $text);
+            }
+        }
+        return $text;
+    }
+
+    // }}}
+    // {{{ function quoteIdentifier($str, $check_option = false)
+
+    /**
+     * Quote a string so it can be safely used as a table or column name
+     *
+     * Delimiting style depends on which database driver is being used.
+     *
+     * NOTE: just because you CAN use delimited identifiers doesn't mean
+     * you SHOULD use them.  In general, they end up causing way more
+     * problems than they solve.
+     *
+     * NOTE: if you have table names containing periods, don't use this method
+     * (@see bug #11906)
+     *
+     * Portability is broken by using the following characters inside
+     * delimited identifiers:
+     *   + backtick (<kbd>`</kbd>) -- due to MySQL
+     *   + double quote (<kbd>"</kbd>) -- due to Oracle
+     *   + brackets (<kbd>[</kbd> or <kbd>]</kbd>) -- due to Access
+     *
+     * Delimited identifiers are known to generally work correctly under
+     * the following drivers:
+     *   + mssql
+     *   + mysql
+     *   + mysqli
+     *   + oci8
+     *   + pgsql
+     *   + sqlite
+     *
+     * InterBase doesn't seem to be able to use delimited identifiers
+     * via PHP 4.  They work fine under PHP 5.
+     *
+     * @param   string  identifier name to be quoted
+     * @param   bool    check the 'quote_identifier' option
+     *
+     * @return  string  quoted identifier string
+     *
+     * @access  public
+     */
+    function quoteIdentifier($str, $check_option = false)
+    {
+        if ($check_option && !$this->options['quote_identifier']) {
+            return $str;
+        }
+        $str = str_replace($this->identifier_quoting['end'], $this->identifier_quoting['escape'] . $this->identifier_quoting['end'], $str);
+        $parts = explode('.', $str);
+        foreach (array_keys($parts) as $k) {
+            $parts[$k] = $this->identifier_quoting['start'] . $parts[$k] . $this->identifier_quoting['end'];
+        }
+        return implode('.', $parts);
+    }
+
+    // }}}
+    // {{{ function getAsKeyword()
+
+    /**
+     * Gets the string to alias column
+     *
+     * @return string to use when aliasing a column
+     */
+    function getAsKeyword()
+    {
+        return $this->as_keyword;
+    }
+
+    // }}}
+    // {{{ function getConnection()
+
+    /**
+     * Returns a native connection
+     *
+     * @return  mixed   a valid MDB2 connection object,
+     *                  or a MDB2 error object on error
+     *
+     * @access  public
+     */
+    function getConnection()
+    {
+        $result = $this->connect();
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return $this->connection;
+    }
+
+     // }}}
+    // {{{ function _fixResultArrayValues(&$row, $mode)
+
+    /**
+     * Do all necessary conversions on result arrays to fix DBMS quirks
+     *
+     * @param   array   the array to be fixed (passed by reference)
+     * @param   array   bit-wise addition of the required portability modes
+     *
+     * @return  void
+     *
+     * @access  protected
+     */
+    function _fixResultArrayValues(&$row, $mode)
+    {
+        switch ($mode) {
+        case MDB2_PORTABILITY_EMPTY_TO_NULL:
+            foreach ($row as $key => $value) {
+                if ($value === '') {
+                    $row[$key] = null;
+                }
+            }
+            break;
+        case MDB2_PORTABILITY_RTRIM:
+            foreach ($row as $key => $value) {
+                if (is_string($value)) {
+                    $row[$key] = rtrim($value);
+                }
+            }
+            break;
+        case MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES:
+            $tmp_row = array();
+            foreach ($row as $key => $value) {
+                $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
+            }
+            $row = $tmp_row;
+            break;
+        case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL):
+            foreach ($row as $key => $value) {
+                if ($value === '') {
+                    $row[$key] = null;
+                } elseif (is_string($value)) {
+                    $row[$key] = rtrim($value);
+                }
+            }
+            break;
+        case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES):
+            $tmp_row = array();
+            foreach ($row as $key => $value) {
+                if (is_string($value)) {
+                    $value = rtrim($value);
+                }
+                $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
+            }
+            $row = $tmp_row;
+            break;
+        case (MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES):
+            $tmp_row = array();
+            foreach ($row as $key => $value) {
+                if ($value === '') {
+                    $value = null;
+                }
+                $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
+            }
+            $row = $tmp_row;
+            break;
+        case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES):
+            $tmp_row = array();
+            foreach ($row as $key => $value) {
+                if ($value === '') {
+                    $value = null;
+                } elseif (is_string($value)) {
+                    $value = rtrim($value);
+                }
+                $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
+            }
+            $row = $tmp_row;
+            break;
+        }
+    }
+
+    // }}}
+    // {{{ function &loadModule($module, $property = null, $phptype_specific = null)
+
+    /**
+     * loads a module
+     *
+     * @param   string  name of the module that should be loaded
+     *                  (only used for error messages)
+     * @param   string  name of the property into which the class will be loaded
+     * @param   bool    if the class to load for the module is specific to the
+     *                  phptype
+     *
+     * @return  object  on success a reference to the given module is returned
+     *                  and on failure a PEAR error
+     *
+     * @access  public
+     */
+    function &loadModule($module, $property = null, $phptype_specific = null)
+    {
+        if (!$property) {
+            $property = strtolower($module);
+        }
+
+        if (!isset($this->{$property})) {
+            $version = $phptype_specific;
+            if ($phptype_specific !== false) {
+                $version = true;
+                $class_name = 'MDB2_Driver_'.$module.'_'.$this->phptype;
+                $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
+            }
+            if ($phptype_specific === false
+                || (!MDB2::classExists($class_name) && !MDB2::fileExists($file_name))
+            ) {
+                $version = false;
+                $class_name = 'MDB2_'.$module;
+                $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
+            }
+
+            $err = MDB2::loadClass($class_name, $this->getOption('debug'));
+            if (PEAR::isError($err)) {
+                return $err;
+            }
+
+            // load module in a specific version
+            if ($version) {
+                if (method_exists($class_name, 'getClassName')) {
+                    $class_name_new = call_user_func(array($class_name, 'getClassName'), $this->db_index);
+                    if ($class_name != $class_name_new) {
+                        $class_name = $class_name_new;
+                        $err = MDB2::loadClass($class_name, $this->getOption('debug'));
+                        if (PEAR::isError($err)) {
+                            return $err;
+                        }
+                    }
+                }
+            }
+
+            if (!MDB2::classExists($class_name)) {
+                $err =& $this->raiseError(MDB2_ERROR_LOADMODULE, null, null,
+                    "unable to load module '$module' into property '$property'", __FUNCTION__);
+                return $err;
+            }
+            $this->{$property} = new $class_name($this->db_index);
+            $this->modules[$module] =& $this->{$property};
+            if ($version) {
+                // this will be used in the connect method to determine if the module
+                // needs to be loaded with a different version if the server
+                // version changed in between connects
+                $this->loaded_version_modules[] = $property;
+            }
+        }
+
+        return $this->{$property};
+    }
+
+    // }}}
+    // {{{ function __call($method, $params)
+
+    /**
+     * Calls a module method using the __call magic method
+     *
+     * @param   string  Method name.
+     * @param   array   Arguments.
+     *
+     * @return  mixed   Returned value.
+     */
+    function __call($method, $params)
+    {
+        $module = null;
+        if (preg_match('/^([a-z]+)([A-Z])(.*)$/', $method, $match)
+            && isset($this->options['modules'][$match[1]])
+        ) {
+            $module = $this->options['modules'][$match[1]];
+            $method = strtolower($match[2]).$match[3];
+            if (!isset($this->modules[$module]) || !is_object($this->modules[$module])) {
+                $result =& $this->loadModule($module);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        } else {
+            foreach ($this->modules as $key => $foo) {
+                if (is_object($this->modules[$key])
+                    && method_exists($this->modules[$key], $method)
+                ) {
+                    $module = $key;
+                    break;
+                }
+            }
+        }
+        if (!is_null($module)) {
+            return call_user_func_array(array(&$this->modules[$module], $method), $params);
+        }
+        trigger_error(sprintf('Call to undefined function: %s::%s().', get_class($this), $method), E_USER_ERROR);
+    }
+
+    // }}}
+    // {{{ function beginTransaction($savepoint = null)
+
+    /**
+     * Start a transaction or set a savepoint.
+     *
+     * @param   string  name of a savepoint to set
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function beginTransaction($savepoint = null)
+    {
+        $this->debug('Starting transaction', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'transactions are not supported', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function commit($savepoint = null)
+
+    /**
+     * Commit the database changes done during a transaction that is in
+     * progress or release a savepoint. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after committing the pending changes.
+     *
+     * @param   string  name of a savepoint to release
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function commit($savepoint = null)
+    {
+        $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'commiting transactions is not supported', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function rollback($savepoint = null)
+
+    /**
+     * Cancel any database changes done during a transaction or since a specific
+     * savepoint that is in progress. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after canceling the pending changes.
+     *
+     * @param   string  name of a savepoint to rollback to
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function rollback($savepoint = null)
+    {
+        $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'rolling back transactions is not supported', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function inTransaction($ignore_nested = false)
+
+    /**
+     * If a transaction is currently open.
+     *
+     * @param   bool    if the nested transaction count should be ignored
+     * @return  int|bool    - an integer with the nesting depth is returned if a
+     *                      nested transaction is open
+     *                      - true is returned for a normal open transaction
+     *                      - false is returned if no transaction is open
+     *
+     * @access  public
+     */
+    function inTransaction($ignore_nested = false)
+    {
+        if (!$ignore_nested && isset($this->nested_transaction_counter)) {
+            return $this->nested_transaction_counter;
+        }
+        return $this->in_transaction;
+    }
+
+    // }}}
+    // {{{ function setTransactionIsolation($isolation)
+
+    /**
+     * Set the transacton isolation level.
+     *
+     * @param   string  standard isolation level
+     *                  READ UNCOMMITTED (allows dirty reads)
+     *                  READ COMMITTED (prevents dirty reads)
+     *                  REPEATABLE READ (prevents nonrepeatable reads)
+     *                  SERIALIZABLE (prevents phantom reads)
+     * @param   array some transaction options:
+     *                  'wait' => 'WAIT' | 'NO WAIT'
+     *                  'rw'   => 'READ WRITE' | 'READ ONLY'
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     * @since   2.1.1
+     */
+    function setTransactionIsolation($isolation, $options = array())
+    {
+        $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'isolation level setting is not supported', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function beginNestedTransaction($savepoint = false)
+
+    /**
+     * Start a nested transaction.
+     *
+     * @return  mixed   MDB2_OK on success/savepoint name, a MDB2 error on failure
+     *
+     * @access  public
+     * @since   2.1.1
+     */
+    function beginNestedTransaction()
+    {
+        if ($this->in_transaction) {
+            ++$this->nested_transaction_counter;
+            $savepoint = sprintf($this->options['savepoint_format'], $this->nested_transaction_counter);
+            if ($this->supports('savepoints') && $savepoint) {
+                return $this->beginTransaction($savepoint);
+            }
+            return MDB2_OK;
+        }
+        $this->has_transaction_error = false;
+        $result = $this->beginTransaction();
+        $this->nested_transaction_counter = 1;
+        return $result;
+    }
+
+    // }}}
+    // {{{ function completeNestedTransaction($force_rollback = false, $release = false)
+
+    /**
+     * Finish a nested transaction by rolling back if an error occured or
+     * committing otherwise.
+     *
+     * @param   bool    if the transaction should be rolled back regardless
+     *                  even if no error was set within the nested transaction
+     * @return  mixed   MDB_OK on commit/counter decrementing, false on rollback
+     *                  and a MDB2 error on failure
+     *
+     * @access  public
+     * @since   2.1.1
+     */
+    function completeNestedTransaction($force_rollback = false)
+    {
+        if ($this->nested_transaction_counter > 1) {
+            $savepoint = sprintf($this->options['savepoint_format'], $this->nested_transaction_counter);
+            if ($this->supports('savepoints') && $savepoint) {
+                if ($force_rollback || $this->has_transaction_error) {
+                    $result = $this->rollback($savepoint);
+                    if (!PEAR::isError($result)) {
+                        $result = false;
+                        $this->has_transaction_error = false;
+                    }
+                } else {
+                    $result = $this->commit($savepoint);
+                }
+            } else {
+                $result = MDB2_OK;
+            }
+            --$this->nested_transaction_counter;
+            return $result;
+        }
+
+        $this->nested_transaction_counter = null;
+        $result = MDB2_OK;
+
+        // transaction has not yet been rolled back
+        if ($this->in_transaction) {
+            if ($force_rollback || $this->has_transaction_error) {
+                $result = $this->rollback();
+                if (!PEAR::isError($result)) {
+                    $result = false;
+                }
+            } else {
+                $result = $this->commit();
+            }
+        }
+        $this->has_transaction_error = false;
+        return $result;
+    }
+
+    // }}}
+    // {{{ function failNestedTransaction($error = null, $immediately = false)
+
+    /**
+     * Force setting nested transaction to failed.
+     *
+     * @param   mixed   value to return in getNestededTransactionError()
+     * @param   bool    if the transaction should be rolled back immediately
+     * @return  bool    MDB2_OK
+     *
+     * @access  public
+     * @since   2.1.1
+     */
+    function failNestedTransaction($error = null, $immediately = false)
+    {
+        if (is_null($error)) {
+            $error = $this->has_transaction_error ? $this->has_transaction_error : true;
+        } elseif (!$error) {
+            $error = true;
+        }
+        $this->has_transaction_error = $error;
+        if (!$immediately) {
+            return MDB2_OK;
+        }
+        return $this->rollback();
+    }
+
+    // }}}
+    // {{{ function getNestedTransactionError()
+
+    /**
+     * The first error that occured since the transaction start.
+     *
+     * @return  MDB2_Error|bool     MDB2 error object if an error occured or false.
+     *
+     * @access  public
+     * @since   2.1.1
+     */
+    function getNestedTransactionError()
+    {
+        return $this->has_transaction_error;
+    }
+
+    // }}}
+    // {{{ connect()
+
+    /**
+     * Connect to the database
+     *
+     * @return true on success, MDB2 Error Object on failure
+     */
+    function connect()
+    {
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ setCharset($charset, $connection = null)
+
+    /**
+     * Set the charset on the current connection
+     *
+     * @param string    charset
+     * @param resource  connection handle
+     *
+     * @return true on success, MDB2 Error Object on failure
+     */
+    function setCharset($charset, $connection = null)
+    {
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function disconnect($force = true)
+
+    /**
+     * Log out and disconnect from the database.
+     *
+     * @param   bool    if the disconnect should be forced even if the
+     *                  connection is opened persistently
+     *
+     * @return  mixed   true on success, false if not connected and error
+     *                  object on error
+     *
+     * @access  public
+     */
+    function disconnect($force = true)
+    {
+        $this->connection = 0;
+        $this->connected_dsn = array();
+        $this->connected_database_name = '';
+        $this->opened_persistent = null;
+        $this->connected_server_info = '';
+        $this->in_transaction = null;
+        $this->nested_transaction_counter = null;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function setDatabase($name)
+
+    /**
+     * Select a different database
+     *
+     * @param   string  name of the database that should be selected
+     *
+     * @return  string  name of the database previously connected to
+     *
+     * @access  public
+     */
+    function setDatabase($name)
+    {
+        $previous_database_name = (isset($this->database_name)) ? $this->database_name : '';
+        $this->database_name = $name;
+        $this->disconnect(false);
+        return $previous_database_name;
+    }
+
+    // }}}
+    // {{{ function getDatabase()
+
+    /**
+     * Get the current database
+     *
+     * @return  string  name of the database
+     *
+     * @access  public
+     */
+    function getDatabase()
+    {
+        return $this->database_name;
+    }
+
+    // }}}
+    // {{{ function setDSN($dsn)
+
+    /**
+     * set the DSN
+     *
+     * @param   mixed   DSN string or array
+     *
+     * @return  MDB2_OK
+     *
+     * @access  public
+     */
+    function setDSN($dsn)
+    {
+        $dsn_default = $GLOBALS['_MDB2_dsninfo_default'];
+        $dsn = MDB2::parseDSN($dsn);
+        if (array_key_exists('database', $dsn)) {
+            $this->database_name = $dsn['database'];
+            unset($dsn['database']);
+        }
+        $this->dsn = array_merge($dsn_default, $dsn);
+        return $this->disconnect(false);
+    }
+
+    // }}}
+    // {{{ function getDSN($type = 'string', $hidepw = false)
+
+    /**
+     * return the DSN as a string
+     *
+     * @param   string  format to return ("array", "string")
+     * @param   string  string to hide the password with
+     *
+     * @return  mixed   DSN in the chosen type
+     *
+     * @access  public
+     */
+    function getDSN($type = 'string', $hidepw = false)
+    {
+        $dsn = array_merge($GLOBALS['_MDB2_dsninfo_default'], $this->dsn);
+        $dsn['phptype'] = $this->phptype;
+        $dsn['database'] = $this->database_name;
+        if ($hidepw) {
+            $dsn['password'] = $hidepw;
+        }
+        switch ($type) {
+        // expand to include all possible options
+        case 'string':
+           $dsn = $dsn['phptype'].
+               ($dsn['dbsyntax'] ? ('('.$dsn['dbsyntax'].')') : '').
+               '://'.$dsn['username'].':'.
+                $dsn['password'].'@'.$dsn['hostspec'].
+                ($dsn['port'] ? (':'.$dsn['port']) : '').
+                '/'.$dsn['database'];
+            break;
+        case 'array':
+        default:
+            break;
+        }
+        return $dsn;
+    }
+
+    // }}}
+    // {{{ function &standaloneQuery($query, $types = null, $is_manip = false)
+
+   /**
+     * execute a query as database administrator
+     *
+     * @param   string  the SQL query
+     * @param   mixed   array that contains the types of the columns in
+     *                        the result set
+     * @param   bool    if the query is a manipulation query
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function &standaloneQuery($query, $types = null, $is_manip = false)
+    {
+        $offset = $this->offset;
+        $limit = $this->limit;
+        $this->offset = $this->limit = 0;
+        $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
+
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $result =& $this->_doQuery($query, $is_manip, $connection, false);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($is_manip) {
+            $affected_rows =  $this->_affectedRows($connection, $result);
+            return $affected_rows;
+        }
+        $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset);
+        return $result;
+    }
+
+    // }}}
+    // {{{ function _modifyQuery($query, $is_manip, $limit, $offset)
+
+    /**
+     * Changes a query string for various DBMS specific reasons
+     *
+     * @param   string  query to modify
+     * @param   bool    if it is a DML query
+     * @param   int  limit the number of rows
+     * @param   int  start reading from given offset
+     *
+     * @return  string  modified query
+     *
+     * @access  protected
+     */
+    function _modifyQuery($query, $is_manip, $limit, $offset)
+    {
+        return $query;
+    }
+
+    // }}}
+    // {{{ function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
+
+    /**
+     * Execute a query
+     * @param   string  query
+     * @param   bool    if the query is a manipulation query
+     * @param   resource connection handle
+     * @param   string  database name
+     *
+     * @return  result or error object
+     *
+     * @access  protected
+     */
+    function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
+    {
+        $this->last_query = $query;
+        $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        $err =& $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+        return $err;
+    }
+
+    // }}}
+    // {{{ function _affectedRows($connection, $result = null)
+
+    /**
+     * Returns the number of rows affected
+     *
+     * @param   resource result handle
+     * @param   resource connection handle
+     *
+     * @return  mixed   MDB2 Error Object or the number of rows affected
+     *
+     * @access  private
+     */
+    function _affectedRows($connection, $result = null)
+    {
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function &exec($query)
+
+    /**
+     * Execute a manipulation query to the database and return the number of affected rows
+     *
+     * @param   string  the SQL query
+     *
+     * @return  mixed   number of affected rows on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function &exec($query)
+    {
+        $offset = $this->offset;
+        $limit = $this->limit;
+        $this->offset = $this->limit = 0;
+        $query = $this->_modifyQuery($query, true, $limit, $offset);
+
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $result =& $this->_doQuery($query, true, $connection, $this->database_name);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        $affectedRows = $this->_affectedRows($connection, $result);
+        return $affectedRows;
+    }
+
+    // }}}
+    // {{{ function &query($query, $types = null, $result_class = true, $result_wrap_class = false)
+
+    /**
+     * Send a query to the database and return any results
+     *
+     * @param   string  the SQL query
+     * @param   mixed   array that contains the types of the columns in
+     *                        the result set
+     * @param   mixed   string which specifies which result class to use
+     * @param   mixed   string which specifies which class to wrap results in
+     *
+     * @return mixed   an MDB2_Result handle on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function &query($query, $types = null, $result_class = true, $result_wrap_class = false)
+    {
+        $offset = $this->offset;
+        $limit = $this->limit;
+        $this->offset = $this->limit = 0;
+        $query = $this->_modifyQuery($query, false, $limit, $offset);
+
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $result =& $this->_doQuery($query, false, $connection, $this->database_name);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        $result =& $this->_wrapResult($result, $types, $result_class, $result_wrap_class, $limit, $offset);
+        return $result;
+    }
+
+    // }}}
+    // {{{ function &_wrapResult($result, $types = array(), $result_class = true, $result_wrap_class = false, $limit = null, $offset = null)
+
+    /**
+     * wrap a result set into the correct class
+     *
+     * @param   resource result handle
+     * @param   mixed   array that contains the types of the columns in
+     *                        the result set
+     * @param   mixed   string which specifies which result class to use
+     * @param   mixed   string which specifies which class to wrap results in
+     * @param   string  number of rows to select
+     * @param   string  first row to select
+     *
+     * @return mixed   an MDB2_Result, a MDB2 error on failure
+     *
+     * @access  protected
+     */
+    function &_wrapResult($result, $types = array(), $result_class = true,
+        $result_wrap_class = false, $limit = null, $offset = null)
+    {
+        if ($types === true) {
+            if ($this->supports('result_introspection')) {
+                $this->loadModule('Reverse', null, true);
+                $tableInfo = $this->reverse->tableInfo($result);
+                if (PEAR::isError($tableInfo)) {
+                    return $tableInfo;
+                }
+                $types = array();
+                foreach ($tableInfo as $field) {
+                    $types[] = $field['mdb2type'];
+                }
+            } else {
+                $types = null;
+            }
+        }
+
+        if ($result_class === true) {
+            $result_class = $this->options['result_buffering']
+                ? $this->options['buffered_result_class'] : $this->options['result_class'];
+        }
+
+        if ($result_class) {
+            $class_name = sprintf($result_class, $this->phptype);
+            if (!MDB2::classExists($class_name)) {
+                $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                    'result class does not exist '.$class_name, __FUNCTION__);
+                return $err;
+            }
+            $result =& new $class_name($this, $result, $limit, $offset);
+            if (!MDB2::isResultCommon($result)) {
+                $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                    'result class is not extended from MDB2_Result_Common', __FUNCTION__);
+                return $err;
+            }
+            if (!empty($types)) {
+                $err = $result->setResultTypes($types);
+                if (PEAR::isError($err)) {
+                    $result->free();
+                    return $err;
+                }
+            }
+        }
+        if ($result_wrap_class === true) {
+            $result_wrap_class = $this->options['result_wrap_class'];
+        }
+        if ($result_wrap_class) {
+            if (!MDB2::classExists($result_wrap_class)) {
+                $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                    'result wrap class does not exist '.$result_wrap_class, __FUNCTION__);
+                return $err;
+            }
+            $result = new $result_wrap_class($result, $this->fetchmode);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ function getServerVersion($native = false)
+
+    /**
+     * return version information about the server
+     *
+     * @param   bool    determines if the raw version string should be returned
+     *
+     * @return  mixed   array with version information or row string
+     *
+     * @access  public
+     */
+    function getServerVersion($native = false)
+    {
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function setLimit($limit, $offset = null)
+
+    /**
+     * set the range of the next query
+     *
+     * @param   string  number of rows to select
+     * @param   string  first row to select
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function setLimit($limit, $offset = null)
+    {
+        if (!$this->supports('limit_queries')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'limit is not supported by this driver', __FUNCTION__);
+        }
+        $limit = (int)$limit;
+        if ($limit < 0) {
+            return $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                'it was not specified a valid selected range row limit', __FUNCTION__);
+        }
+        $this->limit = $limit;
+        if (!is_null($offset)) {
+            $offset = (int)$offset;
+            if ($offset < 0) {
+                return $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                    'it was not specified a valid first selected range row', __FUNCTION__);
+            }
+            $this->offset = $offset;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function subSelect($query, $type = false)
+
+    /**
+     * simple subselect emulation: leaves the query untouched for all RDBMS
+     * that support subselects
+     *
+     * @param   string  the SQL query for the subselect that may only
+     *                      return a column
+     * @param   string  determines type of the field
+     *
+     * @return  string  the query
+     *
+     * @access  public
+     */
+    function subSelect($query, $type = false)
+    {
+        if ($this->supports('sub_selects') === true) {
+            return $query;
+        }
+
+        if (!$this->supports('sub_selects')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'method not implemented', __FUNCTION__);
+        }
+
+        $col = $this->queryCol($query, $type);
+        if (PEAR::isError($col)) {
+            return $col;
+        }
+        if (!is_array($col) || count($col) == 0) {
+            return 'NULL';
+        }
+        if ($type) {
+            $this->loadModule('Datatype', null, true);
+            return $this->datatype->implodeArray($col, $type);
+        }
+        return implode(', ', $col);
+    }
+
+    // }}}
+    // {{{ function replace($table, $fields)
+
+    /**
+     * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
+     * query, except that if there is already a row in the table with the same
+     * key field values, the REPLACE query just updates its values instead of
+     * inserting a new row.
+     *
+     * The REPLACE type of query does not make part of the SQL standards. Since
+     * practically only MySQL and SQLite implement it natively, this type of
+     * query isemulated through this method for other DBMS using standard types
+     * of queries inside a transaction to assure the atomicity of the operation.
+     *
+     * @param   string  name of the table on which the REPLACE query will
+     *       be executed.
+     * @param   array   associative array   that describes the fields and the
+     *       values that will be inserted or updated in the specified table. The
+     *       indexes of the array are the names of all the fields of the table.
+     *       The values of the array are also associative arrays that describe
+     *       the values and other properties of the table fields.
+     *
+     *       Here follows a list of field properties that need to be specified:
+     *
+     *       value
+     *           Value to be assigned to the specified field. This value may be
+     *           of specified in database independent type format as this
+     *           function can perform the necessary datatype conversions.
+     *
+     *           Default: this property is required unless the Null property is
+     *           set to 1.
+     *
+     *       type
+     *           Name of the type of the field. Currently, all types MDB2
+     *           are supported except for clob and blob.
+     *
+     *           Default: no type conversion
+     *
+     *       null
+     *           bool    property that indicates that the value for this field
+     *           should be set to null.
+     *
+     *           The default value for fields missing in INSERT queries may be
+     *           specified the definition of a table. Often, the default value
+     *           is already null, but since the REPLACE may be emulated using
+     *           an UPDATE query, make sure that all fields of the table are
+     *           listed in this function argument array.
+     *
+     *           Default: 0
+     *
+     *       key
+     *           bool    property that indicates that this field should be
+     *           handled as a primary key or at least as part of the compound
+     *           unique index of the table that will determine the row that will
+     *           updated if it exists or inserted a new row otherwise.
+     *
+     *           This function will fail if no key field is specified or if the
+     *           value of a key field is set to null because fields that are
+     *           part of unique index they may not be null.
+     *
+     *           Default: 0
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function replace($table, $fields)
+    {
+        if (!$this->supports('replace')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'replace query is not supported', __FUNCTION__);
+        }
+        $count = count($fields);
+        $condition = $values = array();
+        for ($colnum = 0, reset($fields); $colnum < $count; next($fields), $colnum++) {
+            $name = key($fields);
+            if (isset($fields[$name]['null']) && $fields[$name]['null']) {
+                $value = 'NULL';
+            } else {
+                $type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null;
+                $value = $this->quote($fields[$name]['value'], $type);
+            }
+            $values[$name] = $value;
+            if (isset($fields[$name]['key']) && $fields[$name]['key']) {
+                if ($value === 'NULL') {
+                    return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                        'key value '.$name.' may not be NULL', __FUNCTION__);
+                }
+                $condition[] = $name . '=' . $value;
+            }
+        }
+        if (empty($condition)) {
+            return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                'not specified which fields are keys', __FUNCTION__);
+        }
+
+        $result = null;
+        $in_transaction = $this->in_transaction;
+        if (!$in_transaction && PEAR::isError($result = $this->beginTransaction())) {
+            return $result;
+        }
+
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $condition = ' WHERE '.implode(' AND ', $condition);
+        $query = "DELETE FROM $table$condition";
+        $result =& $this->_doQuery($query, true, $connection);
+        if (!PEAR::isError($result)) {
+            $affected_rows = $this->_affectedRows($connection, $result);
+            $insert = implode(', ', array_keys($values));
+            $values = implode(', ', $values);
+            $query = "INSERT INTO $table ($insert) VALUES ($values)";
+            $result =& $this->_doQuery($query, true, $connection);
+            if (!PEAR::isError($result)) {
+                $affected_rows += $this->_affectedRows($connection, $result);;
+            }
+        }
+
+        if (!$in_transaction) {
+            if (PEAR::isError($result)) {
+                $this->rollback();
+            } else {
+                $result = $this->commit();
+            }
+        }
+
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        return $affected_rows;
+    }
+
+    // }}}
+    // {{{ function &prepare($query, $types = null, $result_types = null, $lobs = array())
+
+    /**
+     * Prepares a query for multiple execution with execute().
+     * With some database backends, this is emulated.
+     * prepare() requires a generic query as string like
+     * 'INSERT INTO numbers VALUES(?,?)' or
+     * 'INSERT INTO numbers VALUES(:foo,:bar)'.
+     * The ? and :name and are placeholders which can be set using
+     * bindParam() and the query can be sent off using the execute() method.
+     * The allowed format for :name can be set with the 'bindname_format' option.
+     *
+     * @param   string  the query to prepare
+     * @param   mixed   array that contains the types of the placeholders
+     * @param   mixed   array that contains the types of the columns in
+     *                        the result set or MDB2_PREPARE_RESULT, if set to
+     *                        MDB2_PREPARE_MANIP the query is handled as a manipulation query
+     * @param   mixed   key (field) value (parameter) pair for all lob placeholders
+     *
+     * @return  mixed   resource handle for the prepared query on success, 
+     *                  a MDB2 error on failure
+     *
+     * @access  public
+     * @see     bindParam, execute
+     */
+    function &prepare($query, $types = null, $result_types = null, $lobs = array())
+    {
+        $is_manip = ($result_types === MDB2_PREPARE_MANIP);
+        $offset = $this->offset;
+        $limit = $this->limit;
+        $this->offset = $this->limit = 0;
+        $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        $placeholder_type_guess = $placeholder_type = null;
+        $question = '?';
+        $colon = ':';
+        $positions = array();
+        $position = 0;
+        $ignores = $this->sql_comments;
+        $ignores[] = $this->string_quoting;
+        $ignores[] = $this->identifier_quoting;
+        while ($position < strlen($query)) {
+            $q_position = strpos($query, $question, $position);
+            $c_position = strpos($query, $colon, $position);
+            if ($q_position && $c_position) {
+                $p_position = min($q_position, $c_position);
+            } elseif ($q_position) {
+                $p_position = $q_position;
+            } elseif ($c_position) {
+                $p_position = $c_position;
+            } else {
+                break;
+            }
+            if (is_null($placeholder_type)) {
+                $placeholder_type_guess = $query[$p_position];
+            }
+
+            $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position);
+            if (PEAR::isError($new_pos)) {
+                return $new_pos;
+            }
+            if ($new_pos != $position) {
+                $position = $new_pos;
+                continue; //evaluate again starting from the new position
+            }
+
+            if ($query[$position] == $placeholder_type_guess) {
+                if (is_null($placeholder_type)) {
+                    $placeholder_type = $query[$p_position];
+                    $question = $colon = $placeholder_type;
+                    if (!empty($types) && is_array($types)) {
+                        if ($placeholder_type == ':') {
+                            if (is_int(key($types))) {
+                                $types_tmp = $types;
+                                $types = array();
+                                $count = -1;
+                            }
+                        } else {
+                            $types = array_values($types);
+                        }
+                    }
+                }
+                if ($placeholder_type == ':') {
+                    $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
+                    $parameter = preg_replace($regexp, '\\1', $query);
+                    if ($parameter === '') {
+                        $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                            'named parameter name must match "bindname_format" option', __FUNCTION__);
+                        return $err;
+                    }
+                    $positions[$p_position] = $parameter;
+                    $query = substr_replace($query, '?', $position, strlen($parameter)+1);
+                    // use parameter name in type array
+                    if (isset($count) && isset($types_tmp[++$count])) {
+                        $types[$parameter] = $types_tmp[$count];
+                    }
+                } else {
+                    $positions[$p_position] = count($positions);
+                }
+                $position = $p_position + 1;
+            } else {
+                $position = $p_position;
+            }
+        }
+        $class_name = 'MDB2_Statement_'.$this->phptype;
+        $statement = null;
+        $obj = new $class_name($this, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
+        $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
+        return $obj;
+    }
+
+    // }}}
+    // {{{ function _skipDelimitedStrings($query, $position, $p_position)
+    
+    /**
+     * Utility method, used by prepare() to avoid replacing placeholders within delimited strings.
+     * Check if the placeholder is contained within a delimited string.
+     * If so, skip it and advance the position, otherwise return the current position,
+     * which is valid
+     *
+     * @param string $query
+     * @param integer $position current string cursor position
+     * @param integer $p_position placeholder position
+     *
+     * @return mixed integer $new_position on success
+     *               MDB2_Error on failure
+     *
+     * @access  protected
+     */
+    function _skipDelimitedStrings($query, $position, $p_position)
+    {
+        $ignores = $this->sql_comments;
+        $ignores[] = $this->string_quoting;
+        $ignores[] = $this->identifier_quoting;
+        
+        foreach ($ignores as $ignore) {
+            if (!empty($ignore['start'])) {
+                if (is_int($start_quote = strpos($query, $ignore['start'], $position)) && $start_quote < $p_position) {
+                    $end_quote = $start_quote;
+                    do {
+                        if (!is_int($end_quote = strpos($query, $ignore['end'], $end_quote + 1))) {
+                            if ($ignore['end'] === "\n") {
+                                $end_quote = strlen($query) - 1;
+                            } else {
+                                $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                                    'query with an unterminated text string specified', __FUNCTION__);
+                                return $err;
+                            }
+                        }
+                    } while ($ignore['escape'] && $query[($end_quote - 1)] == $ignore['escape']);
+                    $position = $end_quote + 1;
+                    return $position;
+                }
+            }
+        }
+        return $position;
+    }
+    
+    // }}}
+    // {{{ function quote($value, $type = null, $quote = true)
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param   string  text string value that is intended to be converted.
+     * @param   string  type to which the value should be converted to
+     * @param   bool    quote
+     * @param   bool    escape wildcards
+     *
+     * @return  string  text string that represents the given argument value in
+     *       a DBMS specific format.
+     *
+     * @access  public
+     */
+    function quote($value, $type = null, $quote = true, $escape_wildcards = false)
+    {
+        $result = $this->loadModule('Datatype', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        return $this->datatype->quote($value, $type, $quote, $escape_wildcards);
+    }
+
+    // }}}
+    // {{{ function getDeclaration($type, $name, $field)
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare
+     * of the given type
+     *
+     * @param   string  type to which the value should be converted to
+     * @param   string  name the field to be declared.
+     * @param   string  definition of the field
+     *
+     * @return  string  DBMS specific SQL code portion that should be used to
+     *                 declare the specified field.
+     *
+     * @access  public
+     */
+    function getDeclaration($type, $name, $field)
+    {
+        $result = $this->loadModule('Datatype', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return $this->datatype->getDeclaration($type, $name, $field);
+    }
+
+    // }}}
+    // {{{ function compareDefinition($current, $previous)
+
+    /**
+     * Obtain an array of changes that may need to applied
+     *
+     * @param   array   new definition
+     * @param   array   old definition
+     *
+     * @return  array   containing all changes that will need to be applied
+     *
+     * @access  public
+     */
+    function compareDefinition($current, $previous)
+    {
+        $result = $this->loadModule('Datatype', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return $this->datatype->compareDefinition($current, $previous);
+    }
+
+    // }}}
+    // {{{ function supports($feature)
+
+    /**
+     * Tell whether a DB implementation or its backend extension
+     * supports a given feature.
+     *
+     * @param   string  name of the feature (see the MDB2 class doc)
+     *
+     * @return  bool|string if this DB implementation supports a given feature
+     *                      false means no, true means native,
+     *                      'emulated' means emulated
+     *
+     * @access  public
+     */
+    function supports($feature)
+    {
+        if (array_key_exists($feature, $this->supported)) {
+            return $this->supported[$feature];
+        }
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            "unknown support feature $feature", __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function getSequenceName($sqn)
+
+    /**
+     * adds sequence name formatting to a sequence name
+     *
+     * @param   string  name of the sequence
+     *
+     * @return  string  formatted sequence name
+     *
+     * @access  public
+     */
+    function getSequenceName($sqn)
+    {
+        return sprintf($this->options['seqname_format'],
+            preg_replace('/[^a-z0-9_\$.]/i', '_', $sqn));
+    }
+
+    // }}}
+    // {{{ function getIndexName($idx)
+
+    /**
+     * adds index name formatting to a index name
+     *
+     * @param   string  name of the index
+     *
+     * @return  string  formatted index name
+     *
+     * @access  public
+     */
+    function getIndexName($idx)
+    {
+        return sprintf($this->options['idxname_format'],
+            preg_replace('/[^a-z0-9_\$]/i', '_', $idx));
+    }
+
+    // }}}
+    // {{{ function nextID($seq_name, $ondemand = true)
+
+    /**
+     * Returns the next free id of a sequence
+     *
+     * @param   string  name of the sequence
+     * @param   bool    when true missing sequences are automatic created
+     *
+     * @return  mixed   MDB2 Error Object or id
+     *
+     * @access  public
+     */
+    function nextID($seq_name, $ondemand = true)
+    {
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function lastInsertID($table = null, $field = null)
+
+    /**
+     * Returns the autoincrement ID if supported or $id or fetches the current
+     * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
+     *
+     * @param   string  name of the table into which a new row was inserted
+     * @param   string  name of the field into which a new row was inserted
+     *
+     * @return  mixed   MDB2 Error Object or id
+     *
+     * @access  public
+     */
+    function lastInsertID($table = null, $field = null)
+    {
+        return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function currID($seq_name)
+
+    /**
+     * Returns the current id of a sequence
+     *
+     * @param   string  name of the sequence
+     *
+     * @return  mixed   MDB2 Error Object or id
+     *
+     * @access  public
+     */
+    function currID($seq_name)
+    {
+        $this->warnings[] = 'database does not support getting current
+            sequence value, the sequence value was incremented';
+        return $this->nextID($seq_name);
+    }
+
+    // }}}
+    // {{{ function queryOne($query, $type = null, $colnum = 0)
+
+    /**
+     * Execute the specified query, fetch the value from the first column of
+     * the first row of the result set and then frees
+     * the result set.
+     *
+     * @param   string  the SELECT query statement to be executed.
+     * @param   string  optional argument that specifies the expected
+     *       datatype of the result set field, so that an eventual conversion
+     *       may be performed. The default datatype is text, meaning that no
+     *       conversion is performed
+     * @param   int     the column number to fetch
+     *
+     * @return  mixed   MDB2_OK or field value on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function queryOne($query, $type = null, $colnum = 0)
+    {
+        $result = $this->query($query, $type);
+        if (!MDB2::isResultCommon($result)) {
+            return $result;
+        }
+
+        $one = $result->fetchOne($colnum);
+        $result->free();
+        return $one;
+    }
+
+    // }}}
+    // {{{ function queryRow($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT)
+
+    /**
+     * Execute the specified query, fetch the values from the first
+     * row of the result set into an array and then frees
+     * the result set.
+     *
+     * @param   string  the SELECT query statement to be executed.
+     * @param   array   optional array argument that specifies a list of
+     *       expected datatypes of the result set columns, so that the eventual
+     *       conversions may be performed. The default list of datatypes is
+     *       empty, meaning that no conversion is performed.
+     * @param   int     how the array data should be indexed
+     *
+     * @return  mixed   MDB2_OK or data array on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function queryRow($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT)
+    {
+        $result = $this->query($query, $types);
+        if (!MDB2::isResultCommon($result)) {
+            return $result;
+        }
+
+        $row = $result->fetchRow($fetchmode);
+        $result->free();
+        return $row;
+    }
+
+    // }}}
+    // {{{ function queryCol($query, $type = null, $colnum = 0)
+
+    /**
+     * Execute the specified query, fetch the value from the first column of
+     * each row of the result set into an array and then frees the result set.
+     *
+     * @param   string  the SELECT query statement to be executed.
+     * @param   string  optional argument that specifies the expected
+     *       datatype of the result set field, so that an eventual conversion
+     *       may be performed. The default datatype is text, meaning that no
+     *       conversion is performed
+     * @param   int     the row number to fetch
+     *
+     * @return  mixed   MDB2_OK or data array on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function queryCol($query, $type = null, $colnum = 0)
+    {
+        $result = $this->query($query, $type);
+        if (!MDB2::isResultCommon($result)) {
+            return $result;
+        }
+
+        $col = $result->fetchCol($colnum);
+        $result->free();
+        return $col;
+    }
+
+    // }}}
+    // {{{ function queryAll($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false)
+
+    /**
+     * Execute the specified query, fetch all the rows of the result set into
+     * a two dimensional array and then frees the result set.
+     *
+     * @param   string  the SELECT query statement to be executed.
+     * @param   array   optional array argument that specifies a list of
+     *       expected datatypes of the result set columns, so that the eventual
+     *       conversions may be performed. The default list of datatypes is
+     *       empty, meaning that no conversion is performed.
+     * @param   int     how the array data should be indexed
+     * @param   bool    if set to true, the $all will have the first
+     *       column as its first dimension
+     * @param   bool    used only when the query returns exactly
+     *       two columns. If true, the values of the returned array will be
+     *       one-element arrays instead of scalars.
+     * @param   bool    if true, the values of the returned array is
+     *       wrapped in another array.  If the same key value (in the first
+     *       column) repeats itself, the values will be appended to this array
+     *       instead of overwriting the existing values.
+     *
+     * @return  mixed   MDB2_OK or data array on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function queryAll($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT,
+        $rekey = false, $force_array = false, $group = false)
+    {
+        $result = $this->query($query, $types);
+        if (!MDB2::isResultCommon($result)) {
+            return $result;
+        }
+
+        $all = $result->fetchAll($fetchmode, $rekey, $force_array, $group);
+        $result->free();
+        return $all;
+    }
+
+    // }}}
+}
+
+// }}}
+// {{{ class MDB2_Result
+
+/**
+ * The dummy class that all user space result classes should extend from
+ *
+ * @package     MDB2
+ * @category    Database
+ * @author      Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Result
+{
+}
+
+// }}}
+// {{{ class MDB2_Result_Common extends MDB2_Result
+
+/**
+ * The common result class for MDB2 result objects
+ *
+ * @package     MDB2
+ * @category    Database
+ * @author      Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Result_Common extends MDB2_Result
+{
+    // {{{ Variables (Properties)
+
+    var $db;
+    var $result;
+    var $rownum = -1;
+    var $types = array();
+    var $values = array();
+    var $offset;
+    var $offset_count = 0;
+    var $limit;
+    var $column_names;
+
+    // }}}
+    // {{{ constructor: function __construct(&$db, &$result, $limit = 0, $offset = 0)
+
+    /**
+     * Constructor
+     */
+    function __construct(&$db, &$result, $limit = 0, $offset = 0)
+    {
+        $this->db =& $db;
+        $this->result =& $result;
+        $this->offset = $offset;
+        $this->limit = max(0, $limit - 1);
+    }
+
+    // }}}
+    // {{{ function MDB2_Result_Common(&$db, &$result, $limit = 0, $offset = 0)
+
+    /**
+     * PHP 4 Constructor
+     */
+    function MDB2_Result_Common(&$db, &$result, $limit = 0, $offset = 0)
+    {
+        $this->__construct($db, $result, $limit, $offset);
+    }
+
+    // }}}
+    // {{{ function setResultTypes($types)
+
+    /**
+     * Define the list of types to be associated with the columns of a given
+     * result set.
+     *
+     * This function may be called before invoking fetchRow(), fetchOne(),
+     * fetchCol() and fetchAll() so that the necessary data type
+     * conversions are performed on the data to be retrieved by them. If this
+     * function is not called, the type of all result set columns is assumed
+     * to be text, thus leading to not perform any conversions.
+     *
+     * @param   array   variable that lists the
+     *       data types to be expected in the result set columns. If this array
+     *       contains less types than the number of columns that are returned
+     *       in the result set, the remaining columns are assumed to be of the
+     *       type text. Currently, the types clob and blob are not fully
+     *       supported.
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function setResultTypes($types)
+    {
+        $load = $this->db->loadModule('Datatype', null, true);
+        if (PEAR::isError($load)) {
+            return $load;
+        }
+        $types = $this->db->datatype->checkResultTypes($types);
+        if (PEAR::isError($types)) {
+            return $types;
+        }
+        $this->types = $types;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function seek($rownum = 0)
+
+    /**
+     * Seek to a specific row in a result set
+     *
+     * @param   int     number of the row where the data can be found
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function seek($rownum = 0)
+    {
+        $target_rownum = $rownum - 1;
+        if ($this->rownum > $target_rownum) {
+            return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'seeking to previous rows not implemented', __FUNCTION__);
+        }
+        while ($this->rownum < $target_rownum) {
+            $this->fetchRow();
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+
+    /**
+     * Fetch and return a row of data
+     *
+     * @param   int     how the array data should be indexed
+     * @param   int     number of the row where the data can be found
+     *
+     * @return  int     data array on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+    {
+        $err =& $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+        return $err;
+    }
+
+    // }}}
+    // {{{ function fetchOne($colnum = 0)
+
+    /**
+     * fetch single column from the next row from a result set
+     *
+     * @param   int     the column number to fetch
+     * @param   int     number of the row where the data can be found
+     *
+     * @return  string  data on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function fetchOne($colnum = 0, $rownum = null)
+    {
+        $fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC;
+        $row = $this->fetchRow($fetchmode, $rownum);
+        if (!is_array($row) || PEAR::isError($row)) {
+            return $row;
+        }
+        if (!array_key_exists($colnum, $row)) {
+            return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null,
+                'column is not defined in the result set: '.$colnum, __FUNCTION__);
+        }
+        return $row[$colnum];
+    }
+
+    // }}}
+    // {{{ function fetchCol($colnum = 0)
+
+    /**
+     * Fetch and return a column from the current row pointer position
+     *
+     * @param   int     the column number to fetch
+     *
+     * @return  mixed   data array on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function fetchCol($colnum = 0)
+    {
+        $column = array();
+        $fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC;
+        $row = $this->fetchRow($fetchmode);
+        if (is_array($row)) {
+            if (!array_key_exists($colnum, $row)) {
+                return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null,
+                    'column is not defined in the result set: '.$colnum, __FUNCTION__);
+            }
+            do {
+                $column[] = $row[$colnum];
+            } while (is_array($row = $this->fetchRow($fetchmode)));
+        }
+        if (PEAR::isError($row)) {
+            return $row;
+        }
+        return $column;
+    }
+
+    // }}}
+    // {{{ function fetchAll($fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false)
+
+    /**
+     * Fetch and return all rows from the current row pointer position
+     *
+     * @param   int     $fetchmode  the fetch mode to use:
+     *                            + MDB2_FETCHMODE_ORDERED
+     *                            + MDB2_FETCHMODE_ASSOC
+     *                            + MDB2_FETCHMODE_ORDERED | MDB2_FETCHMODE_FLIPPED
+     *                            + MDB2_FETCHMODE_ASSOC | MDB2_FETCHMODE_FLIPPED
+     * @param   bool    if set to true, the $all will have the first
+     *       column as its first dimension
+     * @param   bool    used only when the query returns exactly
+     *       two columns. If true, the values of the returned array will be
+     *       one-element arrays instead of scalars.
+     * @param   bool    if true, the values of the returned array is
+     *       wrapped in another array.  If the same key value (in the first
+     *       column) repeats itself, the values will be appended to this array
+     *       instead of overwriting the existing values.
+     *
+     * @return  mixed   data array on success, a MDB2 error on failure
+     *
+     * @access  public
+     * @see     getAssoc()
+     */
+    function fetchAll($fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false,
+        $force_array = false, $group = false)
+    {
+        $all = array();
+        $row = $this->fetchRow($fetchmode);
+        if (PEAR::isError($row)) {
+            return $row;
+        } elseif (!$row) {
+            return $all;
+        }
+
+        $shift_array = $rekey ? false : null;
+        if (!is_null($shift_array)) {
+            if (is_object($row)) {
+                $colnum = count(get_object_vars($row));
+            } else {
+                $colnum = count($row);
+            }
+            if ($colnum < 2) {
+                return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null,
+                    'rekey feature requires atleast 2 column', __FUNCTION__);
+            }
+            $shift_array = (!$force_array && $colnum == 2);
+        }
+
+        if ($rekey) {
+            do {
+                if (is_object($row)) {
+                    $arr = get_object_vars($row);
+                    $key = reset($arr);
+                    unset($row->{$key});
+                } else {
+                    if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+                        $key = reset($row);
+                        unset($row[key($row)]);
+                    } else {
+                        $key = array_shift($row);
+                    }
+                    if ($shift_array) {
+                        $row = array_shift($row);
+                    }
+                }
+                if ($group) {
+                    $all[$key][] = $row;
+                } else {
+                    $all[$key] = $row;
+                }
+            } while (($row = $this->fetchRow($fetchmode)));
+        } elseif ($fetchmode & MDB2_FETCHMODE_FLIPPED) {
+            do {
+                foreach ($row as $key => $val) {
+                    $all[$key][] = $val;
+                }
+            } while (($row = $this->fetchRow($fetchmode)));
+        } else {
+            do {
+                $all[] = $row;
+            } while (($row = $this->fetchRow($fetchmode)));
+        }
+
+        return $all;
+    }
+
+    // }}}
+    // {{{ function rowCount()
+    /**
+     * Returns the actual row number that was last fetched (count from 0)
+     * @return  int
+     *
+     * @access  public
+     */
+    function rowCount()
+    {
+        return $this->rownum + 1;
+    }
+
+    // }}}
+    // {{{ function numRows()
+
+    /**
+     * Returns the number of rows in a result object
+     *
+     * @return  mixed   MDB2 Error Object or the number of rows
+     *
+     * @access  public
+     */
+    function numRows()
+    {
+        return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function nextResult()
+
+    /**
+     * Move the internal result pointer to the next available result
+     *
+     * @return  true on success, false if there is no more result set or an error object on failure
+     *
+     * @access  public
+     */
+    function nextResult()
+    {
+        return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function getColumnNames()
+
+    /**
+     * Retrieve the names of columns returned by the DBMS in a query result or
+     * from the cache.
+     *
+     * @param   bool    If set to true the values are the column names,
+     *                  otherwise the names of the columns are the keys.
+     * @return  mixed   Array variable that holds the names of columns or an
+     *                  MDB2 error on failure.
+     *                  Some DBMS may not return any columns when the result set
+     *                  does not contain any rows.
+     *
+     * @access  public
+     */
+    function getColumnNames($flip = false)
+    {
+        if (!isset($this->column_names)) {
+            $result = $this->_getColumnNames();
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $this->column_names = $result;
+        }
+        if ($flip) {
+            return array_flip($this->column_names);
+        }
+        return $this->column_names;
+    }
+
+    // }}}
+    // {{{ function _getColumnNames()
+
+    /**
+     * Retrieve the names of columns returned by the DBMS in a query result.
+     *
+     * @return  mixed   Array variable that holds the names of columns as keys
+     *                  or an MDB2 error on failure.
+     *                  Some DBMS may not return any columns when the result set
+     *                  does not contain any rows.
+     *
+     * @access  private
+     */
+    function _getColumnNames()
+    {
+        return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function numCols()
+
+    /**
+     * Count the number of columns returned by the DBMS in a query result.
+     *
+     * @return  mixed   integer value with the number of columns, a MDB2 error
+     *       on failure
+     *
+     * @access  public
+     */
+    function numCols()
+    {
+        return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ function getResource()
+
+    /**
+     * return the resource associated with the result object
+     *
+     * @return  resource
+     *
+     * @access  public
+     */
+    function getResource()
+    {
+        return $this->result;
+    }
+
+    // }}}
+    // {{{ function bindColumn($column, &$value, $type = null)
+
+    /**
+     * Set bind variable to a column.
+     *
+     * @param   int     column number or name
+     * @param   mixed   variable reference
+     * @param   string  specifies the type of the field
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function bindColumn($column, &$value, $type = null)
+    {
+        if (!is_numeric($column)) {
+            $column_names = $this->getColumnNames();
+            if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($this->db->options['field_case'] == CASE_LOWER) {
+                    $column = strtolower($column);
+                } else {
+                    $column = strtoupper($column);
+                }
+            }
+            $column = $column_names[$column];
+        }
+        $this->values[$column] =& $value;
+        if (!is_null($type)) {
+            $this->types[$column] = $type;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function _assignBindColumns($row)
+
+    /**
+     * Bind a variable to a value in the result row.
+     *
+     * @param   array   row data
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  private
+     */
+    function _assignBindColumns($row)
+    {
+        $row = array_values($row);
+        foreach ($row as $column => $value) {
+            if (array_key_exists($column, $this->values)) {
+                $this->values[$column] = $value;
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function free()
+
+    /**
+     * Free the internal resources associated with result.
+     *
+     * @return  bool    true on success, false if result is invalid
+     *
+     * @access  public
+     */
+    function free()
+    {
+        $this->result = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+}
+
+// }}}
+// {{{ class MDB2_Row
+
+/**
+ * The simple class that accepts row data as an array
+ *
+ * @package     MDB2
+ * @category    Database
+ * @author      Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Row
+{
+    // {{{ constructor: function __construct(&$row)
+
+    /**
+     * constructor
+     *
+     * @param   resource    row data as array
+     */
+    function __construct(&$row)
+    {
+        foreach ($row as $key => $value) {
+            $this->$key = &$row[$key];
+        }
+    }
+
+    // }}}
+    // {{{ function MDB2_Row(&$row)
+
+    /**
+     * PHP 4 Constructor
+     *
+     * @param   resource    row data as array
+     */
+    function MDB2_Row(&$row)
+    {
+        $this->__construct($row);
+    }
+
+    // }}}
+}
+
+// }}}
+// {{{ class MDB2_Statement_Common
+
+/**
+ * The common statement class for MDB2 statement objects
+ *
+ * @package     MDB2
+ * @category    Database
+ * @author      Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Statement_Common
+{
+    // {{{ Variables (Properties)
+
+    var $db;
+    var $statement;
+    var $query;
+    var $result_types;
+    var $types;
+    var $values = array();
+    var $limit;
+    var $offset;
+    var $is_manip;
+
+    // }}}
+    // {{{ constructor: function __construct(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null)
+
+    /**
+     * Constructor
+     */
+    function __construct(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null)
+    {
+        $this->db =& $db;
+        $this->statement =& $statement;
+        $this->positions = $positions;
+        $this->query = $query;
+        $this->types = (array)$types;
+        $this->result_types = (array)$result_types;
+        $this->limit = $limit;
+        $this->is_manip = $is_manip;
+        $this->offset = $offset;
+    }
+
+    // }}}
+    // {{{ function MDB2_Statement_Common(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null)
+
+    /**
+     * PHP 4 Constructor
+     */
+    function MDB2_Statement_Common(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null)
+    {
+        $this->__construct($db, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
+    }
+
+    // }}}
+    // {{{ function bindValue($parameter, &$value, $type = null)
+
+    /**
+     * Set the value of a parameter of a prepared query.
+     *
+     * @param   int     the order number of the parameter in the query
+     *       statement. The order number of the first parameter is 1.
+     * @param   mixed   value that is meant to be assigned to specified
+     *       parameter. The type of the value depends on the $type argument.
+     * @param   string  specifies the type of the field
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function bindValue($parameter, $value, $type = null)
+    {
+        if (!is_numeric($parameter)) {
+            $parameter = preg_replace('/^:(.*)$/', '\\1', $parameter);
+        }
+        if (!in_array($parameter, $this->positions)) {
+            return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
+        }
+        $this->values[$parameter] = $value;
+        if (!is_null($type)) {
+            $this->types[$parameter] = $type;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function bindValueArray($values, $types = null)
+
+    /**
+     * Set the values of multiple a parameter of a prepared query in bulk.
+     *
+     * @param   array   specifies all necessary information
+     *       for bindValue() the array elements must use keys corresponding to
+     *       the number of the position of the parameter.
+     * @param   array   specifies the types of the fields
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     * @see     bindParam()
+     */
+    function bindValueArray($values, $types = null)
+    {
+        $types = is_array($types) ? array_values($types) : array_fill(0, count($values), null);
+        $parameters = array_keys($values);
+        foreach ($parameters as $key => $parameter) {
+            $this->db->expectError(MDB2_ERROR_NOT_FOUND);
+            $err = $this->bindValue($parameter, $values[$parameter], $types[$key]);
+            $this->db->popExpect();
+            if (PEAR::isError($err)) {
+                if ($err->getCode() == MDB2_ERROR_NOT_FOUND) {
+                    //ignore (extra value for missing placeholder)
+                    continue;
+                }
+                return $err;
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function bindParam($parameter, &$value, $type = null)
+
+    /**
+     * Bind a variable to a parameter of a prepared query.
+     *
+     * @param   int     the order number of the parameter in the query
+     *       statement. The order number of the first parameter is 1.
+     * @param   mixed   variable that is meant to be bound to specified
+     *       parameter. The type of the value depends on the $type argument.
+     * @param   string  specifies the type of the field
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function bindParam($parameter, &$value, $type = null)
+    {
+        if (!is_numeric($parameter)) {
+            $parameter = preg_replace('/^:(.*)$/', '\\1', $parameter);
+        }
+        if (!in_array($parameter, $this->positions)) {
+            return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
+        }
+        $this->values[$parameter] =& $value;
+        if (!is_null($type)) {
+            $this->types[$parameter] = $type;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function bindParamArray(&$values, $types = null)
+
+    /**
+     * Bind the variables of multiple a parameter of a prepared query in bulk.
+     *
+     * @param   array   specifies all necessary information
+     *       for bindParam() the array elements must use keys corresponding to
+     *       the number of the position of the parameter.
+     * @param   array   specifies the types of the fields
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     * @see     bindParam()
+     */
+    function bindParamArray(&$values, $types = null)
+    {
+        $types = is_array($types) ? array_values($types) : array_fill(0, count($values), null);
+        $parameters = array_keys($values);
+        foreach ($parameters as $key => $parameter) {
+            $err = $this->bindParam($parameter, $values[$parameter], $types[$key]);
+            if (PEAR::isError($err)) {
+                return $err;
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function &execute($values = null, $result_class = true, $result_wrap_class = false)
+
+    /**
+     * Execute a prepared query statement.
+     *
+     * @param   array   specifies all necessary information
+     *       for bindParam() the array elements must use keys corresponding to
+     *       the number of the position of the parameter.
+     * @param   mixed   specifies which result class to use
+     * @param   mixed   specifies which class to wrap results in
+     *
+     * @return  mixed   a result handle or MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function &execute($values = null, $result_class = true, $result_wrap_class = false)
+    {
+        if (is_null($this->positions)) {
+            return $this->db->raiseError(MDB2_ERROR, null, null,
+                'Prepared statement has already been freed', __FUNCTION__);
+        }
+
+        $values = (array)$values;
+        if (!empty($values)) {
+            $err = $this->bindValueArray($values);
+            if (PEAR::isError($err)) {
+                return $this->db->raiseError(MDB2_ERROR, null, null,
+                                            'Binding Values failed with message: ' . $err->getMessage(), __FUNCTION__);
+            }
+        }
+        $result =& $this->_execute($result_class, $result_wrap_class);
+        return $result;
+    }
+
+    // }}}
+    // {{{ function &_execute($result_class = true, $result_wrap_class = false)
+
+    /**
+     * Execute a prepared query statement helper method.
+     *
+     * @param   mixed   specifies which result class to use
+     * @param   mixed   specifies which class to wrap results in
+     *
+     * @return  mixed   MDB2_Result or integer on success, a MDB2 error on failure
+     *
+     * @access  private
+     */
+    function &_execute($result_class = true, $result_wrap_class = false)
+    {
+        $this->last_query = $this->query;
+        $query = '';
+        $last_position = 0;
+        foreach ($this->positions as $current_position => $parameter) {
+            if (!array_key_exists($parameter, $this->values)) {
+                return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                    'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
+            }
+            $value = $this->values[$parameter];
+            $query.= substr($this->query, $last_position, $current_position - $last_position);
+            if (!isset($value)) {
+                $value_quoted = 'NULL';
+            } else {
+                $type = !empty($this->types[$parameter]) ? $this->types[$parameter] : null;
+                $value_quoted = $this->db->quote($value, $type);
+                if (PEAR::isError($value_quoted)) {
+                    return $value_quoted;
+                }
+            }
+            $query.= $value_quoted;
+            $last_position = $current_position + 1;
+        }
+        $query.= substr($this->query, $last_position);
+
+        $this->db->offset = $this->offset;
+        $this->db->limit = $this->limit;
+        if ($this->is_manip) {
+            $result = $this->db->exec($query);
+        } else {
+            $result =& $this->db->query($query, $this->result_types, $result_class, $result_wrap_class);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ function free()
+
+    /**
+     * Release resources allocated for the specified prepared query.
+     *
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function free()
+    {
+        if (is_null($this->positions)) {
+            return $this->db->raiseError(MDB2_ERROR, null, null,
+                'Prepared statement has already been freed', __FUNCTION__);
+        }
+
+        $this->statement = null;
+        $this->positions = null;
+        $this->query = null;
+        $this->types = null;
+        $this->result_types = null;
+        $this->limit = null;
+        $this->is_manip = null;
+        $this->offset = null;
+        $this->values = null;
+
+        return MDB2_OK;
+    }
+
+    // }}}
+}
+
+// }}}
+// {{{ class MDB2_Module_Common
+
+/**
+ * The common modules class for MDB2 module objects
+ *
+ * @package     MDB2
+ * @category    Database
+ * @author      Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Module_Common
+{
+    // {{{ Variables (Properties)
+
+    /**
+     * contains the key to the global MDB2 instance array of the associated
+     * MDB2 instance
+     *
+     * @var     int
+     * @access  protected
+     */
+    var $db_index;
+
+    // }}}
+    // {{{ constructor: function __construct($db_index)
+
+    /**
+     * Constructor
+     */
+    function __construct($db_index)
+    {
+        $this->db_index = $db_index;
+    }
+
+    // }}}
+    // {{{ function MDB2_Module_Common($db_index)
+
+    /**
+     * PHP 4 Constructor
+     */
+    function MDB2_Module_Common($db_index)
+    {
+        $this->__construct($db_index);
+    }
+
+    // }}}
+    // {{{ function &getDBInstance()
+
+    /**
+     * Get the instance of MDB2 associated with the module instance
+     *
+     * @return  object  MDB2 instance or a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function &getDBInstance()
+    {
+        if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+            $result =& $GLOBALS['_MDB2_databases'][$this->db_index];
+        } else {
+            $result =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'could not find MDB2 instance');
+        }
+        return $result;
+    }
+
+    // }}}
+}
+
+// }}}
+// {{{ function MDB2_closeOpenTransactions()
+
+/**
+ * Close any open transactions form persistent connections
+ *
+ * @return  void
+ *
+ * @access  public
+ */
+
+function MDB2_closeOpenTransactions()
+{
+    reset($GLOBALS['_MDB2_databases']);
+    while (next($GLOBALS['_MDB2_databases'])) {
+        $key = key($GLOBALS['_MDB2_databases']);
+        if ($GLOBALS['_MDB2_databases'][$key]->opened_persistent
+            && $GLOBALS['_MDB2_databases'][$key]->in_transaction
+        ) {
+            $GLOBALS['_MDB2_databases'][$key]->rollback();
+        }
+    }
+}
+
+// }}}
+// {{{ function MDB2_defaultDebugOutput(&$db, $scope, $message, $is_manip = null)
+
+/**
+ * default debug output handler
+ *
+ * @param   object  reference to an MDB2 database object
+ * @param   string  usually the method name that triggered the debug call:
+ *                  for example 'query', 'prepare', 'execute', 'parameters',
+ *                  'beginTransaction', 'commit', 'rollback'
+ * @param   string  message that should be appended to the debug variable
+ * @param   array   contains context information about the debug() call
+ *                  common keys are: is_manip, time, result etc.
+ *
+ * @return  void|string optionally return a modified message, this allows
+ *                      rewriting a query before being issued or prepared
+ *
+ * @access  public
+ */
+function MDB2_defaultDebugOutput(&$db, $scope, $message, $context = array())
+{
+    $db->debug_output.= $scope.'('.$db->db_index.'): ';
+    $db->debug_output.= $message.$db->getOption('log_line_break');
+    return $message;
+}
+
+// }}}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Date.php b/program/lib/MDB2/Date.php
new file mode 100644
index 0000000..ce84654
--- /dev/null
+++ b/program/lib/MDB2/Date.php
@@ -0,0 +1,183 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: Date.php,v 1.10 2006/03/01 12:15:32 lsmith Exp $
+//
+
+/**
+ * @package  MDB2
+ * @category Database
+ * @author   Lukas Smith <smith@pooteeweet.org>
+ */
+
+/**
+ * Several methods to convert the MDB2 native timestamp format (ISO based)
+ * to and from data structures that are convenient to worth with in side of php.
+ * For more complex date arithmetic please take a look at the Date package in PEAR
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Date
+{
+    // {{{ mdbNow()
+
+    /**
+     * return the current datetime
+     *
+     * @return string current datetime in the MDB2 format
+     * @access public
+     */
+    function mdbNow()
+    {
+        return date('Y-m-d H:i:s');
+    }
+    // }}}
+
+    // {{{ mdbToday()
+
+    /**
+     * return the current date
+     *
+     * @return string current date in the MDB2 format
+     * @access public
+     */
+    function mdbToday()
+    {
+        return date('Y-m-d');
+    }
+    // }}}
+
+    // {{{ mdbTime()
+
+    /**
+     * return the current time
+     *
+     * @return string current time in the MDB2 format
+     * @access public
+     */
+    function mdbTime()
+    {
+        return date('H:i:s');
+    }
+    // }}}
+
+    // {{{ date2Mdbstamp()
+
+    /**
+     * convert a date into a MDB2 timestamp
+     *
+     * @param int hour of the date
+     * @param int minute of the date
+     * @param int second of the date
+     * @param int month of the date
+     * @param int day of the date
+     * @param int year of the date
+     *
+     * @return string a valid MDB2 timestamp
+     * @access public
+     */
+    function date2Mdbstamp($hour = null, $minute = null, $second = null,
+        $month = null, $day = null, $year = null)
+    {
+        return MDB2_Date::unix2Mdbstamp(mktime($hour, $minute, $second, $month, $day, $year, -1));
+    }
+    // }}}
+
+    // {{{ unix2Mdbstamp()
+
+    /**
+     * convert a unix timestamp into a MDB2 timestamp
+     *
+     * @param int a valid unix timestamp
+     *
+     * @return string a valid MDB2 timestamp
+     * @access public
+     */
+    function unix2Mdbstamp($unix_timestamp)
+    {
+        return date('Y-m-d H:i:s', $unix_timestamp);
+    }
+    // }}}
+
+    // {{{ mdbstamp2Unix()
+
+    /**
+     * convert a MDB2 timestamp into a unix timestamp
+     *
+     * @param int a valid MDB2 timestamp
+     * @return string unix timestamp with the time stored in the MDB2 format
+     *
+     * @access public
+     */
+    function mdbstamp2Unix($mdb_timestamp)
+    {
+        $arr = MDB2_Date::mdbstamp2Date($mdb_timestamp);
+
+        return mktime($arr['hour'], $arr['minute'], $arr['second'], $arr['month'], $arr['day'], $arr['year'], -1);
+    }
+    // }}}
+
+    // {{{ mdbstamp2Date()
+
+    /**
+     * convert a MDB2 timestamp into an array containing all
+     * values necessary to pass to php's date() function
+     *
+     * @param int a valid MDB2 timestamp
+     *
+     * @return array with the time split
+     * @access public
+     */
+    function mdbstamp2Date($mdb_timestamp)
+    {
+        list($arr['year'], $arr['month'], $arr['day'], $arr['hour'], $arr['minute'], $arr['second']) =
+            sscanf($mdb_timestamp, "%04u-%02u-%02u %02u:%02u:%02u");
+        return $arr;
+    }
+    // }}}
+}
+
+?>
diff --git a/program/lib/MDB2/Driver/Datatype/Common.php b/program/lib/MDB2/Driver/Datatype/Common.php
new file mode 100644
index 0000000..01423e4
--- /dev/null
+++ b/program/lib/MDB2/Driver/Datatype/Common.php
@@ -0,0 +1,1830 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: Common.php,v 1.128 2007/11/09 20:54:58 quipo Exp $
+
+require_once 'MDB2/LOB.php';
+
+/**
+ * @package  MDB2
+ * @category Database
+ * @author   Lukas Smith <smith@pooteeweet.org>
+ */
+
+/**
+ * MDB2_Driver_Common: Base class that is extended by each MDB2 driver
+ *
+ * To load this module in the MDB2 object:
+ * $mdb->loadModule('Datatype');
+ *
+ * @package MDB2
+ * @category Database
+ * @author Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Datatype_Common extends MDB2_Module_Common
+{
+    var $valid_default_values = array(
+        'text'      => '',
+        'boolean'   => true,
+        'integer'   => 0,
+        'decimal'   => 0.0,
+        'float'     => 0.0,
+        'timestamp' => '1970-01-01 00:00:00',
+        'time'      => '00:00:00',
+        'date'      => '1970-01-01',
+        'clob'      => '',
+        'blob'      => '',
+    );
+
+    /**
+     * contains all LOB objects created with this MDB2 instance
+     * @var array
+     * @access protected
+     */
+    var $lobs = array();
+
+    // }}}
+    // {{{ getValidTypes()
+
+    /**
+     * Get the list of valid types
+     *
+     * This function returns an array of valid types as keys with the values
+     * being possible default values for all native datatypes and mapped types
+     * for custom datatypes.
+     *
+     * @return mixed array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getValidTypes()
+    {
+        $types = $this->valid_default_values;
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        if (!empty($db->options['datatype_map'])) {
+            foreach ($db->options['datatype_map'] as $type => $mapped_type) {
+                if (array_key_exists($mapped_type, $types)) {
+                    $types[$type] = $types[$mapped_type];
+                } elseif (!empty($db->options['datatype_map_callback'][$type])) {
+                    $parameter = array('type' => $type, 'mapped_type' => $mapped_type);
+                    $default =  call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
+                    $types[$type] = $default;
+                }
+            }
+        }
+        return $types;
+    }
+
+    // }}}
+    // {{{ checkResultTypes()
+
+    /**
+     * Define the list of types to be associated with the columns of a given
+     * result set.
+     *
+     * This function may be called before invoking fetchRow(), fetchOne()
+     * fetchCole() and fetchAll() so that the necessary data type
+     * conversions are performed on the data to be retrieved by them. If this
+     * function is not called, the type of all result set columns is assumed
+     * to be text, thus leading to not perform any conversions.
+     *
+     * @param array $types array variable that lists the
+     *       data types to be expected in the result set columns. If this array
+     *       contains less types than the number of columns that are returned
+     *       in the result set, the remaining columns are assumed to be of the
+     *       type text. Currently, the types clob and blob are not fully
+     *       supported.
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function checkResultTypes($types)
+    {
+        $types = is_array($types) ? $types : array($types);
+        foreach ($types as $key => $type) {
+            if (!isset($this->valid_default_values[$type])) {
+                $db =& $this->getDBInstance();
+                if (PEAR::isError($db)) {
+                    return $db;
+                }
+                if (empty($db->options['datatype_map'][$type])) {
+                    return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                        $type.' for '.$key.' is not a supported column type', __FUNCTION__);
+                }
+            }
+        }
+        return $types;
+    }
+
+    // }}}
+    // {{{ _baseConvertResult()
+
+    /**
+     * General type conversion method
+     *
+     * @param mixed   $value reference to a value to be converted
+     * @param string  $type  specifies which type to convert to
+     * @param boolean $rtrim [optional] when TRUE [default], apply rtrim() to text
+     * @return object an MDB2 error on failure
+     * @access protected
+     */
+    function _baseConvertResult($value, $type, $rtrim = true)
+    {
+        switch ($type) {
+        case 'text':
+            if ($rtrim) {
+                $value = rtrim($value);
+            }
+            return $value;
+        case 'integer':
+            return intval($value);
+        case 'boolean':
+            return !empty($value);
+        case 'decimal':
+            return $value;
+        case 'float':
+            return doubleval($value);
+        case 'date':
+            return $value;
+        case 'time':
+            return $value;
+        case 'timestamp':
+            return $value;
+        case 'clob':
+        case 'blob':
+            $this->lobs[] = array(
+                'buffer' => null,
+                'position' => 0,
+                'lob_index' => null,
+                'endOfLOB' => false,
+                'resource' => $value,
+                'value' => null,
+                'loaded' => false,
+            );
+            end($this->lobs);
+            $lob_index = key($this->lobs);
+            $this->lobs[$lob_index]['lob_index'] = $lob_index;
+            return fopen('MDB2LOB://'.$lob_index.'@'.$this->db_index, 'r+');
+        }
+
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_INVALID, null, null,
+            'attempt to convert result value to an unknown type :' . $type, __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ convertResult()
+
+    /**
+     * Convert a value to a RDBMS indipendent MDB2 type
+     *
+     * @param mixed   $value value to be converted
+     * @param string  $type  specifies which type to convert to
+     * @param boolean $rtrim [optional] when TRUE [default], apply rtrim() to text
+     * @return mixed converted value
+     * @access public
+     */
+    function convertResult($value, $type, $rtrim = true)
+    {
+        if (is_null($value)) {
+            return null;
+        }
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        if (!empty($db->options['datatype_map'][$type])) {
+            $type = $db->options['datatype_map'][$type];
+            if (!empty($db->options['datatype_map_callback'][$type])) {
+                $parameter = array('type' => $type, 'value' => $value, 'rtrim' => $rtrim);
+                return call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
+            }
+        }
+        return $this->_baseConvertResult($value, $type, $rtrim);
+    }
+
+    // }}}
+    // {{{ convertResultRow()
+
+    /**
+     * Convert a result row
+     *
+     * @param array   $types
+     * @param array   $row   specifies the types to convert to
+     * @param boolean $rtrim [optional] when TRUE [default], apply rtrim() to text
+     * @return mixed MDB2_OK on success, an MDB2 error on failure
+     * @access public
+     */
+    function convertResultRow($types, $row, $rtrim = true)
+    {
+        $types = $this->_sortResultFieldTypes(array_keys($row), $types);
+        foreach ($row as $key => $value) {
+            if (empty($types[$key])) {
+                continue;
+            }
+            $value = $this->convertResult($row[$key], $types[$key], $rtrim);
+            if (PEAR::isError($value)) {
+                return $value;
+            }
+            $row[$key] = $value;
+        }
+        return $row;
+    }
+
+    // }}}
+    // {{{ _sortResultFieldTypes()
+
+    /**
+     * convert a result row
+     *
+     * @param array $types
+     * @param array $row specifies the types to convert to
+     * @param bool   $rtrim   if to rtrim text values or not
+     * @return mixed MDB2_OK on success,  a MDB2 error on failure
+     * @access public
+     */
+    function _sortResultFieldTypes($columns, $types)
+    {
+        $n_cols = count($columns);
+        $n_types = count($types);
+        if ($n_cols > $n_types) {
+            for ($i= $n_cols - $n_types; $i >= 0; $i--) {
+                $types[] = null;
+            }
+        }
+        $sorted_types = array();
+        foreach ($columns as $col) {
+            $sorted_types[$col] = null;
+        }
+        foreach ($types as $name => $type) {
+            if (array_key_exists($name, $sorted_types)) {
+                $sorted_types[$name] = $type;
+                unset($types[$name]);
+            }
+        }
+        // if there are left types in the array, fill the null values of the
+        // sorted array with them, in order.
+        if (count($types)) {
+            reset($types);
+            foreach (array_keys($sorted_types) as $k) {
+                if (is_null($sorted_types[$k])) {
+                    $sorted_types[$k] = current($types);
+                    next($types);
+                }
+            }
+        }
+        return $sorted_types;
+    }
+
+    // }}}
+    // {{{ getDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare
+     * of the given type
+     *
+     * @param string $type type to which the value should be converted to
+     * @param string  $name   name the field to be declared.
+     * @param string  $field  definition of the field
+     * @return string  DBMS specific SQL code portion that should be used to
+     *                 declare the specified field.
+     * @access public
+     */
+    function getDeclaration($type, $name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!empty($db->options['datatype_map'][$type])) {
+            $type = $db->options['datatype_map'][$type];
+            if (!empty($db->options['datatype_map_callback'][$type])) {
+                $parameter = array('type' => $type, 'name' => $name, 'field' => $field);
+                return call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
+            }
+            $field['type'] = $type;
+        }
+
+        if (!method_exists($this, "_get{$type}Declaration")) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'type not defined: '.$type, __FUNCTION__);
+        }
+        return $this->{"_get{$type}Declaration"}($name, $field);
+    }
+
+    // }}}
+    // {{{ getTypeDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an text type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param array $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      length
+     *          Integer value that determines the maximum length of the text
+     *          field. If this argument is missing the field should be
+     *          declared to have the longest length allowed by the DBMS.
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field.
+     * @access public
+     */
+    function getTypeDeclaration($field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        switch ($field['type']) {
+        case 'text':
+            $length = !empty($field['length']) ? $field['length'] : $db->options['default_text_field_length'];
+            $fixed = !empty($field['fixed']) ? $field['fixed'] : false;
+            return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR('.$db->options['default_text_field_length'].')')
+                : ($length ? 'VARCHAR('.$length.')' : 'TEXT');
+        case 'clob':
+            return 'TEXT';
+        case 'blob':
+            return 'TEXT';
+        case 'integer':
+            return 'INT';
+        case 'boolean':
+            return 'INT';
+        case 'date':
+            return 'CHAR ('.strlen('YYYY-MM-DD').')';
+        case 'time':
+            return 'CHAR ('.strlen('HH:MM:SS').')';
+        case 'timestamp':
+            return 'CHAR ('.strlen('YYYY-MM-DD HH:MM:SS').')';
+        case 'float':
+            return 'TEXT';
+        case 'decimal':
+            return 'TEXT';
+        }
+        return '';
+    }
+
+    // }}}
+    // {{{ _getDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare a generic type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name   name the field to be declared.
+     * @param array  $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      length
+     *          Integer value that determines the maximum length of the text
+     *          field. If this argument is missing the field should be
+     *          declared to have the longest length allowed by the DBMS.
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     *      charset
+     *          Text value with the default CHARACTER SET for this field.
+     *      collation
+     *          Text value with the default COLLATION for this field.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field, or a MDB2_Error on failure
+     * @access protected
+     */
+    function _getDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $declaration_options = $db->datatype->_getDeclarationOptions($field);
+        if (PEAR::isError($declaration_options)) {
+            return $declaration_options;
+        }
+        return $name.' '.$this->getTypeDeclaration($field).$declaration_options;
+    }
+
+    // }}}
+    // {{{ _getDeclarationOptions()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare a generic type
+     * field to be used in statement like CREATE TABLE, without the field name
+     * and type values (ie. just the character set, default value, if the
+     * field is permitted to be NULL or not, and the collation options).
+     *
+     * @param array  $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     *      charset
+     *          Text value with the default CHARACTER SET for this field.
+     *      collation
+     *          Text value with the default COLLATION for this field.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field's options.
+     * @access protected
+     */
+    function _getDeclarationOptions($field)
+    {
+        $charset = empty($field['charset']) ? '' :
+            ' '.$this->_getCharsetFieldDeclaration($field['charset']);
+
+        $default = '';
+        if (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $db =& $this->getDBInstance();
+                if (PEAR::isError($db)) {
+                    return $db;
+                }
+                if (empty($field['notnull'])) {
+                    $field['default'] = null;
+                } else {
+                    $valid_default_values = $this->getValidTypes();
+                    $field['default'] = $valid_default_values[$field['type']];
+                }
+                if ($field['default'] === ''
+                    && ($db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL)
+                ) {
+                    $field['default'] = ' ';
+                }
+            }
+            $default = ' DEFAULT '.$this->quote($field['default'], $field['type']);
+        } elseif (empty($field['notnull'])) {
+            $default = ' DEFAULT NULL';
+        }
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        
+        $collation = empty($field['collation']) ? '' :
+            ' '.$this->_getCollationFieldDeclaration($field['collation']);
+        return $charset.$default.$notnull.$collation;
+    }
+
+    // }}}
+    // {{{ _getCharsetFieldDeclaration()
+    
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the CHARACTER SET
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $charset   name of the charset
+     * @return string  DBMS specific SQL code portion needed to set the CHARACTER SET
+     *                 of a field declaration.
+     */
+    function _getCharsetFieldDeclaration($charset)
+    {
+        return '';
+    }
+
+    // }}}
+    // {{{ _getCollationFieldDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the COLLATION
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $collation   name of the collation
+     * @return string  DBMS specific SQL code portion needed to set the COLLATION
+     *                 of a field declaration.
+     */
+    function _getCollationFieldDeclaration($collation)
+    {
+        return '';
+    }
+
+    // }}}
+    // {{{ _getIntegerDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an integer type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *       of the field being declared as array indexes. Currently, the types
+     *       of supported field properties are as follows:
+     *
+     *       unsigned
+     *           Boolean flag that indicates whether the field should be
+     *           declared as unsigned integer if possible.
+     *
+     *       default
+     *           Integer value to be used as default for this field.
+     *
+     *       notnull
+     *           Boolean flag that indicates whether this field is constrained
+     *           to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *       declare the specified field.
+     * @access protected
+     */
+    function _getIntegerDeclaration($name, $field)
+    {
+        if (!empty($field['unsigned'])) {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+
+            $db->warnings[] = "unsigned integer field \"$name\" is being declared as signed integer";
+        }
+        return $this->_getDeclaration($name, $field);
+    }
+
+    // }}}
+    // {{{ _getTextDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an text type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *       of the field being declared as array indexes. Currently, the types
+     *       of supported field properties are as follows:
+     *
+     *       length
+     *           Integer value that determines the maximum length of the text
+     *           field. If this argument is missing the field should be
+     *           declared to have the longest length allowed by the DBMS.
+     *
+     *       default
+     *           Text value to be used as default for this field.
+     *
+     *       notnull
+     *           Boolean flag that indicates whether this field is constrained
+     *           to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *       declare the specified field.
+     * @access protected
+     */
+    function _getTextDeclaration($name, $field)
+    {
+        return $this->_getDeclaration($name, $field);
+    }
+
+    // }}}
+    // {{{ _getCLOBDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an character
+     * large object type field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *        of the field being declared as array indexes. Currently, the types
+     *        of supported field properties are as follows:
+     *
+     *        length
+     *            Integer value that determines the maximum length of the large
+     *            object field. If this argument is missing the field should be
+     *            declared to have the longest length allowed by the DBMS.
+     *
+     *        notnull
+     *            Boolean flag that indicates whether this field is constrained
+     *            to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *        declare the specified field.
+     * @access public
+     */
+    function _getCLOBDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$notnull;
+    }
+
+    // }}}
+    // {{{ _getBLOBDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an binary large
+     * object type field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *        of the field being declared as array indexes. Currently, the types
+     *        of supported field properties are as follows:
+     *
+     *        length
+     *            Integer value that determines the maximum length of the large
+     *            object field. If this argument is missing the field should be
+     *            declared to have the longest length allowed by the DBMS.
+     *
+     *        notnull
+     *            Boolean flag that indicates whether this field is constrained
+     *            to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *        declare the specified field.
+     * @access protected
+     */
+    function _getBLOBDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$notnull;
+    }
+
+    // }}}
+    // {{{ _getBooleanDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare a boolean type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *       of the field being declared as array indexes. Currently, the types
+     *       of supported field properties are as follows:
+     *
+     *       default
+     *           Boolean value to be used as default for this field.
+     *
+     *       notnullL
+     *           Boolean flag that indicates whether this field is constrained
+     *           to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *       declare the specified field.
+     * @access protected
+     */
+    function _getBooleanDeclaration($name, $field)
+    {
+        return $this->_getDeclaration($name, $field);
+    }
+
+    // }}}
+    // {{{ _getDateDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare a date type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *       of the field being declared as array indexes. Currently, the types
+     *       of supported field properties are as follows:
+     *
+     *       default
+     *           Date value to be used as default for this field.
+     *
+     *       notnull
+     *           Boolean flag that indicates whether this field is constrained
+     *           to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *       declare the specified field.
+     * @access protected
+     */
+    function _getDateDeclaration($name, $field)
+    {
+        return $this->_getDeclaration($name, $field);
+    }
+
+    // }}}
+    // {{{ _getTimestampDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare a timestamp
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *       of the field being declared as array indexes. Currently, the types
+     *       of supported field properties are as follows:
+     *
+     *       default
+     *           Timestamp value to be used as default for this field.
+     *
+     *       notnull
+     *           Boolean flag that indicates whether this field is constrained
+     *           to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *       declare the specified field.
+     * @access protected
+     */
+    function _getTimestampDeclaration($name, $field)
+    {
+        return $this->_getDeclaration($name, $field);
+    }
+
+    // }}}
+    // {{{ _getTimeDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare a time
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *       of the field being declared as array indexes. Currently, the types
+     *       of supported field properties are as follows:
+     *
+     *       default
+     *           Time value to be used as default for this field.
+     *
+     *       notnull
+     *           Boolean flag that indicates whether this field is constrained
+     *           to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *       declare the specified field.
+     * @access protected
+     */
+    function _getTimeDeclaration($name, $field)
+    {
+        return $this->_getDeclaration($name, $field);
+    }
+
+    // }}}
+    // {{{ _getFloatDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare a float type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *       of the field being declared as array indexes. Currently, the types
+     *       of supported field properties are as follows:
+     *
+     *       default
+     *           Float value to be used as default for this field.
+     *
+     *       notnull
+     *           Boolean flag that indicates whether this field is constrained
+     *           to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *       declare the specified field.
+     * @access protected
+     */
+    function _getFloatDeclaration($name, $field)
+    {
+        return $this->_getDeclaration($name, $field);
+    }
+
+    // }}}
+    // {{{ _getDecimalDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare a decimal type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *       of the field being declared as array indexes. Currently, the types
+     *       of supported field properties are as follows:
+     *
+     *       default
+     *           Decimal value to be used as default for this field.
+     *
+     *       notnull
+     *           Boolean flag that indicates whether this field is constrained
+     *           to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *       declare the specified field.
+     * @access protected
+     */
+    function _getDecimalDeclaration($name, $field)
+    {
+        return $this->_getDeclaration($name, $field);
+    }
+
+    // }}}
+    // {{{ compareDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access public
+     */
+    function compareDefinition($current, $previous)
+    {
+        $type = !empty($current['type']) ? $current['type'] : null;
+
+        if (!method_exists($this, "_compare{$type}Definition")) {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            if (!empty($db->options['datatype_map_callback'][$type])) {
+                $parameter = array('current' => $current, 'previous' => $previous);
+                $change =  call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
+                return $change;
+            }
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'type "'.$current['type'].'" is not yet supported', __FUNCTION__);
+        }
+
+        if (empty($previous['type']) || $previous['type'] != $type) {
+            return $current;
+        }
+
+        $change = $this->{"_compare{$type}Definition"}($current, $previous);
+
+        if ($previous['type'] != $type) {
+            $change['type'] = true;
+        }
+
+        $previous_notnull = !empty($previous['notnull']) ? $previous['notnull'] : false;
+        $notnull = !empty($current['notnull']) ? $current['notnull'] : false;
+        if ($previous_notnull != $notnull) {
+            $change['notnull'] = true;
+        }
+
+        $previous_default = array_key_exists('default', $previous) ? $previous['default'] :
+            ($previous_notnull ? '' : null);
+        $default = array_key_exists('default', $current) ? $current['default'] :
+            ($notnull ? '' : null);
+        if ($previous_default !== $default) {
+            $change['default'] = true;
+        }
+
+        return $change;
+    }
+
+    // }}}
+    // {{{ _compareIntegerDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an integer field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareIntegerDefinition($current, $previous)
+    {
+        $change = array();
+        $previous_unsigned = !empty($previous['unsigned']) ? $previous['unsigned'] : false;
+        $unsigned = !empty($current['unsigned']) ? $current['unsigned'] : false;
+        if ($previous_unsigned != $unsigned) {
+            $change['unsigned'] = true;
+        }
+        $previous_autoincrement = !empty($previous['autoincrement']) ? $previous['autoincrement'] : false;
+        $autoincrement = !empty($current['autoincrement']) ? $current['autoincrement'] : false;
+        if ($previous_autoincrement != $autoincrement) {
+            $change['autoincrement'] = true;
+        }
+        return $change;
+    }
+
+    // }}}
+    // {{{ _compareTextDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an text field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareTextDefinition($current, $previous)
+    {
+        $change = array();
+        $previous_length = !empty($previous['length']) ? $previous['length'] : 0;
+        $length = !empty($current['length']) ? $current['length'] : 0;
+        if ($previous_length != $length) {
+            $change['length'] = true;
+        }
+        $previous_fixed = !empty($previous['fixed']) ? $previous['fixed'] : 0;
+        $fixed = !empty($current['fixed']) ? $current['fixed'] : 0;
+        if ($previous_fixed != $fixed) {
+            $change['fixed'] = true;
+        }
+        return $change;
+    }
+
+    // }}}
+    // {{{ _compareCLOBDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an CLOB field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareCLOBDefinition($current, $previous)
+    {
+        return $this->_compareTextDefinition($current, $previous);
+    }
+
+    // }}}
+    // {{{ _compareBLOBDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an BLOB field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareBLOBDefinition($current, $previous)
+    {
+        return $this->_compareTextDefinition($current, $previous);
+    }
+
+    // }}}
+    // {{{ _compareDateDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an date field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareDateDefinition($current, $previous)
+    {
+        return array();
+    }
+
+    // }}}
+    // {{{ _compareTimeDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an time field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareTimeDefinition($current, $previous)
+    {
+        return array();
+    }
+
+    // }}}
+    // {{{ _compareTimestampDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an timestamp field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareTimestampDefinition($current, $previous)
+    {
+        return array();
+    }
+
+    // }}}
+    // {{{ _compareBooleanDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an boolean field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareBooleanDefinition($current, $previous)
+    {
+        return array();
+    }
+
+    // }}}
+    // {{{ _compareFloatDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an float field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareFloatDefinition($current, $previous)
+    {
+        return array();
+    }
+
+    // }}}
+    // {{{ _compareDecimalDefinition()
+
+    /**
+     * Obtain an array of changes that may need to applied to an decimal field
+     *
+     * @param array $current new definition
+     * @param array  $previous old definition
+     * @return array  containing all changes that will need to be applied
+     * @access protected
+     */
+    function _compareDecimalDefinition($current, $previous)
+    {
+        return array();
+    }
+
+    // }}}
+    // {{{ quote()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param string $type type to which the value should be converted to
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access public
+     */
+    function quote($value, $type = null, $quote = true, $escape_wildcards = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (is_null($value)
+            || ($value === '' && $db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL)
+        ) {
+            if (!$quote) {
+                return null;
+            }
+            return 'NULL';
+        }
+
+        if (is_null($type)) {
+            switch (gettype($value)) {
+            case 'integer':
+                $type = 'integer';
+                break;
+            case 'double':
+                // todo: default to decimal as float is quite unusual
+                // $type = 'float';
+                $type = 'decimal';
+                break;
+            case 'boolean':
+                $type = 'boolean';
+                break;
+            case 'array':
+                 $value = serialize($value);
+            case 'object':
+                 $type = 'text';
+                break;
+            default:
+                if (preg_match('/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}$/', $value)) {
+                    $type = 'timestamp';
+                } elseif (preg_match('/^\d{2}:\d{2}$/', $value)) {
+                    $type = 'time';
+                } elseif (preg_match('/^\d{4}-\d{2}-\d{2}$/', $value)) {
+                    $type = 'date';
+                } else {
+                    $type = 'text';
+                }
+                break;
+            }
+        } elseif (!empty($db->options['datatype_map'][$type])) {
+            $type = $db->options['datatype_map'][$type];
+            if (!empty($db->options['datatype_map_callback'][$type])) {
+                $parameter = array('type' => $type, 'value' => $value, 'quote' => $quote, 'escape_wildcards' => $escape_wildcards);
+                return call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
+            }
+        }
+
+        if (!method_exists($this, "_quote{$type}")) {
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'type not defined: '.$type, __FUNCTION__);
+        }
+        $value = $this->{"_quote{$type}"}($value, $quote, $escape_wildcards);
+        if ($quote && $escape_wildcards && $db->string_quoting['escape_pattern']
+            && $db->string_quoting['escape'] !== $db->string_quoting['escape_pattern']
+        ) {
+            $value.= $this->patternEscapeString();
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ _quoteInteger()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteInteger($value, $quote, $escape_wildcards)
+    {
+        return (int)$value;
+    }
+
+    // }}}
+    // {{{ _quoteText()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that already contains any DBMS specific
+     *       escaped character sequences.
+     * @access protected
+     */
+    function _quoteText($value, $quote, $escape_wildcards)
+    {
+        if (!$quote) {
+            return $value;
+        }
+
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $value = $db->escape($value, $escape_wildcards);
+        if (PEAR::isError($value)) {
+            return $value;
+        }
+        return "'".$value."'";
+    }
+
+    // }}}
+    // {{{ _readFile()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _readFile($value)
+    {
+        $close = false;
+        if (preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
+            $close = true;
+            if ($match[1] == 'file://') {
+                $value = $match[2];
+            }
+            $value = @fopen($value, 'r');
+        }
+
+        if (is_resource($value)) {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+
+            $fp = $value;
+            $value = '';
+            while (!@feof($fp)) {
+                $value.= @fread($fp, $db->options['lob_buffer_length']);
+            }
+            if ($close) {
+                @fclose($fp);
+            }
+        }
+
+        return $value;
+    }
+
+    // }}}
+    // {{{ _quoteLOB()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteLOB($value, $quote, $escape_wildcards)
+    {
+        $value = $this->_readFile($value);
+        if (PEAR::isError($value)) {
+            return $value;
+        }
+        return $this->_quoteText($value, $quote, $escape_wildcards);
+    }
+
+    // }}}
+    // {{{ _quoteCLOB()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteCLOB($value, $quote, $escape_wildcards)
+    {
+        return $this->_quoteLOB($value, $quote, $escape_wildcards);
+    }
+
+    // }}}
+    // {{{ _quoteBLOB()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteBLOB($value, $quote, $escape_wildcards)
+    {
+        return $this->_quoteLOB($value, $quote, $escape_wildcards);
+    }
+
+    // }}}
+    // {{{ _quoteBoolean()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteBoolean($value, $quote, $escape_wildcards)
+    {
+        return ($value ? 1 : 0);
+    }
+
+    // }}}
+    // {{{ _quoteDate()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteDate($value, $quote, $escape_wildcards)
+    {
+        if ($value === 'CURRENT_DATE') {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            if (isset($db->function) && is_a($db->function, 'MDB2_Driver_Function_Common')) {
+                return $db->function->now('date');
+            }
+            return 'CURRENT_DATE';
+        }
+        return $this->_quoteText($value, $quote, $escape_wildcards);
+    }
+
+    // }}}
+    // {{{ _quoteTimestamp()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteTimestamp($value, $quote, $escape_wildcards)
+    {
+        if ($value === 'CURRENT_TIMESTAMP') {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            if (isset($db->function) && is_a($db->function, 'MDB2_Driver_Function_Common')) {
+                return $db->function->now('timestamp');
+            }
+            return 'CURRENT_TIMESTAMP';
+        }
+        return $this->_quoteText($value, $quote, $escape_wildcards);
+    }
+
+    // }}}
+    // {{{ _quoteTime()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     *       compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteTime($value, $quote, $escape_wildcards)
+    {
+        if ($value === 'CURRENT_TIME') {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            if (isset($db->function) && is_a($db->function, 'MDB2_Driver_Function_Common')) {
+                return $db->function->now('time');
+            }
+            return 'CURRENT_TIME';
+        }
+        return $this->_quoteText($value, $quote, $escape_wildcards);
+    }
+
+    // }}}
+    // {{{ _quoteFloat()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteFloat($value, $quote, $escape_wildcards)
+    {
+        if (preg_match('/^(.*)e([-+])(\d+)$/i', $value, $matches)) {
+            $decimal = $this->_quoteDecimal($matches[1], $quote, $escape_wildcards);
+            $sign = $matches[2];
+            $exponent = str_pad($matches[3], 2, '0', STR_PAD_LEFT);
+            $value = $decimal.'E'.$sign.$exponent;
+        } else {
+            $value = $this->_quoteDecimal($value, $quote, $escape_wildcards);
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ _quoteDecimal()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteDecimal($value, $quote, $escape_wildcards)
+    {
+        $value = (string)$value;
+        $value = preg_replace('/[^\d\.,\-+eE]/', '', $value);
+        if (preg_match('/[^.0-9]/', $value)) {
+            if (strpos($value, ',')) {
+                // 1000,00
+                if (!strpos($value, '.')) {
+                    // convert the last "," to a "."
+                    $value = strrev(str_replace(',', '.', strrev($value)));
+                // 1.000,00
+                } elseif (strpos($value, '.') && strpos($value, '.') < strpos($value, ',')) {
+                    $value = str_replace('.', '', $value);
+                    // convert the last "," to a "."
+                    $value = strrev(str_replace(',', '.', strrev($value)));
+                // 1,000.00
+                } else {
+                    $value = str_replace(',', '', $value);
+                }
+            }
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ writeLOBToFile()
+
+    /**
+     * retrieve LOB from the database
+     *
+     * @param resource $lob stream handle
+     * @param string $file name of the file into which the LOb should be fetched
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access protected
+     */
+    function writeLOBToFile($lob, $file)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (preg_match('/^(\w+:\/\/)(.*)$/', $file, $match)) {
+            if ($match[1] == 'file://') {
+                $file = $match[2];
+            }
+        }
+
+        $fp = @fopen($file, 'wb');
+        while (!@feof($lob)) {
+            $result = @fread($lob, $db->options['lob_buffer_length']);
+            $read = strlen($result);
+            if (@fwrite($fp, $result, $read) != $read) {
+                @fclose($fp);
+                return $db->raiseError(MDB2_ERROR, null, null,
+                    'could not write to the output file', __FUNCTION__);
+            }
+        }
+        @fclose($fp);
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _retrieveLOB()
+
+    /**
+     * retrieve LOB from the database
+     *
+     * @param array $lob array
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access protected
+     */
+    function _retrieveLOB(&$lob)
+    {
+        if (is_null($lob['value'])) {
+            $lob['value'] = $lob['resource'];
+        }
+        $lob['loaded'] = true;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ readLOB()
+
+    /**
+     * Read data from large object input stream.
+     *
+     * @param resource $lob stream handle
+     * @param string $data reference to a variable that will hold data
+     *                          to be read from the large object input stream
+     * @param integer $length    value that indicates the largest ammount ofdata
+     *                          to be read from the large object input stream.
+     * @return mixed the effective number of bytes read from the large object
+     *                      input stream on sucess or an MDB2 error object.
+     * @access public
+     * @see endOfLOB()
+     */
+    function _readLOB($lob, $length)
+    {
+        return substr($lob['value'], $lob['position'], $length);
+    }
+
+    // }}}
+    // {{{ _endOfLOB()
+
+    /**
+     * Determine whether it was reached the end of the large object and
+     * therefore there is no more data to be read for the its input stream.
+     *
+     * @param array $lob array
+     * @return mixed true or false on success, a MDB2 error on failure
+     * @access protected
+     */
+    function _endOfLOB($lob)
+    {
+        return $lob['endOfLOB'];
+    }
+
+    // }}}
+    // {{{ destroyLOB()
+
+    /**
+     * Free any resources allocated during the lifetime of the large object
+     * handler object.
+     *
+     * @param resource $lob stream handle
+     * @access public
+     */
+    function destroyLOB($lob)
+    {
+        $lob_data = stream_get_meta_data($lob);
+        $lob_index = $lob_data['wrapper_data']->lob_index;
+        fclose($lob);
+        if (isset($this->lobs[$lob_index])) {
+            $this->_destroyLOB($this->lobs[$lob_index]);
+            unset($this->lobs[$lob_index]);
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _destroyLOB()
+
+    /**
+     * Free any resources allocated during the lifetime of the large object
+     * handler object.
+     *
+     * @param array $lob array
+     * @access private
+     */
+    function _destroyLOB(&$lob)
+    {
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ implodeArray()
+
+    /**
+     * apply a type to all values of an array and return as a comma seperated string
+     * useful for generating IN statements
+     *
+     * @access public
+     *
+     * @param array $array data array
+     * @param string $type determines type of the field
+     *
+     * @return string comma seperated values
+     */
+    function implodeArray($array, $type = false)
+    {
+        if (!is_array($array) || empty($array)) {
+            return 'NULL';
+        }
+        if ($type) {
+            foreach ($array as $value) {
+                $return[] = $this->quote($value, $type);
+            }
+        } else {
+            $return = $array;
+        }
+        return implode(', ', $return);
+    }
+
+    // }}}
+    // {{{ matchPattern()
+
+    /**
+     * build a pattern matching string
+     *
+     * @access public
+     *
+     * @param array $pattern even keys are strings, odd are patterns (% and _)
+     * @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
+     * @param string $field optional field name that is being matched against
+     *                  (might be required when emulating ILIKE)
+     *
+     * @return string SQL pattern
+     */
+    function matchPattern($pattern, $operator = null, $field = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $match = '';
+        if (!is_null($operator)) {
+            $operator = strtoupper($operator);
+            switch ($operator) {
+            // case insensitive
+            case 'ILIKE':
+                if (is_null($field)) {
+                    return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                        'case insensitive LIKE matching requires passing the field name', __FUNCTION__);
+                }
+                $db->loadModule('Function', null, true);
+                $match = $db->function->lower($field).' LIKE ';
+                break;
+            // case sensitive
+            case 'LIKE':
+                $match = is_null($field) ? 'LIKE ' : $field.' LIKE ';
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'not a supported operator type:'. $operator, __FUNCTION__);
+            }
+        }
+        $match.= "'";
+        foreach ($pattern as $key => $value) {
+            if ($key % 2) {
+                $match.= $value;
+            } else {
+                if ($operator === 'ILIKE') {
+                    $value = strtolower($value);
+                }
+                $escaped = $db->escape($value);
+                if (PEAR::isError($escaped)) {
+                    return $escaped;
+                }
+                $match.= $db->escapePattern($escaped);
+            }
+        }
+        $match.= "'";
+        $match.= $this->patternEscapeString();
+        return $match;
+    }
+
+    // }}}
+    // {{{ patternEscapeString()
+
+    /**
+     * build string to define pattern escape character
+     *
+     * @access public
+     *
+     * @return string define pattern escape character
+     */
+    function patternEscapeString()
+    {
+        return '';
+    }
+
+    // }}}
+    // {{{ mapNativeDatatype()
+
+    /**
+     * Maps a native array description of a field to a MDB2 datatype and length
+     *
+     * @param array  $field native field description
+     * @return array containing the various possible types, length, sign, fixed
+     * @access public
+     */
+    function mapNativeDatatype($field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        // If the user has specified an option to map the native field
+        // type to a custom MDB2 datatype...
+        $db_type = strtok($field['type'], '(), ');
+        if (!empty($db->options['nativetype_map_callback'][$db_type])) {
+            return call_user_func_array($db->options['nativetype_map_callback'][$db_type], array($db, $field));
+        }
+
+        // Otherwise perform the built-in (i.e. normal) MDB2 native type to
+        // MDB2 datatype conversion
+        return $this->_mapNativeDatatype($field);
+    }
+
+    // }}}
+    // {{{ _mapNativeDatatype()
+
+    /**
+     * Maps a native array description of a field to a MDB2 datatype and length
+     *
+     * @param array  $field native field description
+     * @return array containing the various possible types, length, sign, fixed
+     * @access public
+     */
+    function _mapNativeDatatype($field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ mapPrepareDatatype()
+
+    /**
+     * Maps an mdb2 datatype to mysqli prepare type
+     *
+     * @param string $type
+     * @return string
+     * @access public
+     */
+    function mapPrepareDatatype($type)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!empty($db->options['datatype_map'][$type])) {
+            $type = $db->options['datatype_map'][$type];
+            if (!empty($db->options['datatype_map_callback'][$type])) {
+                $parameter = array('type' => $type);
+                return call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
+            }
+        }
+
+        return $type;
+    }
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Datatype/mssql.php b/program/lib/MDB2/Driver/Datatype/mssql.php
new file mode 100644
index 0000000..4bdad8c
--- /dev/null
+++ b/program/lib/MDB2/Driver/Datatype/mssql.php
@@ -0,0 +1,498 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Authors: Lukas Smith <smith@pooteeweet.org>                          |
+// |          Daniel Convissor <danielc@php.net>                          |
+// +----------------------------------------------------------------------+
+//
+// $Id: mssql.php,v 1.59 2007/12/03 20:59:50 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Datatype/Common.php';
+
+/**
+ * MDB2 MS SQL driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Datatype_mssql extends MDB2_Driver_Datatype_Common
+{
+    // {{{ _baseConvertResult()
+
+    /**
+     * general type conversion method
+     *
+     * @param mixed   $value refernce to a value to be converted
+     * @param string  $type  specifies which type to convert to
+     * @param boolean $rtrim [optional] when TRUE [default], apply rtrim() to text
+     * @return object a MDB2 error on failure
+     * @access protected
+     */
+    function _baseConvertResult($value, $type, $rtrim = true)
+    {
+        if (is_null($value)) {
+            return null;
+        }
+        switch ($type) {
+        case 'boolean':
+            return $value == '1';
+        case 'date':
+            if (strlen($value) > 10) {
+                $value = substr($value,0,10);
+            }
+            return $value;
+        case 'time':
+            if (strlen($value) > 8) {
+                $value = substr($value,11,8);
+            }
+            return $value;
+        }
+        return parent::_baseConvertResult($value, $type, $rtrim);
+    }
+
+    // }}}
+    // {{{ _getCollationFieldDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the COLLATION
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $collation name of the collation
+     *
+     * @return string DBMS specific SQL code portion needed to set the COLLATION
+     *                of a field declaration.
+     */
+    function _getCollationFieldDeclaration($collation)
+    {
+        return 'COLLATE '.$collation;
+    }
+
+    // }}}
+    // {{{ getTypeDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an text type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param array $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      length
+     *          Integer value that determines the maximum length of the text
+     *          field. If this argument is missing the field should be
+     *          declared to have the longest length allowed by the DBMS.
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field.
+     * @access public
+     */
+    function getTypeDeclaration($field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        switch ($field['type']) {
+        case 'text':
+            $length = !empty($field['length'])
+                ? $field['length'] : false;
+            $fixed = !empty($field['fixed']) ? $field['fixed'] : false;
+            return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR('.$db->options['default_text_field_length'].')')
+                : ($length ? 'VARCHAR('.$length.')' : 'TEXT');
+        case 'clob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 8000) {
+                    return 'VARCHAR('.$length.')';
+                }
+             }
+             return 'TEXT';
+        case 'blob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 8000) {
+                    return "VARBINARY($length)";
+                }
+            }
+            return 'IMAGE';
+        case 'integer':
+            return 'INT';
+        case 'boolean':
+            return 'BIT';
+        case 'date':
+            return 'CHAR ('.strlen('YYYY-MM-DD').')';
+        case 'time':
+            return 'CHAR ('.strlen('HH:MM:SS').')';
+        case 'timestamp':
+            return 'CHAR ('.strlen('YYYY-MM-DD HH:MM:SS').')';
+        case 'float':
+            return 'FLOAT';
+        case 'decimal':
+            $length = !empty($field['length']) ? $field['length'] : 18;
+            $scale = !empty($field['scale']) ? $field['scale'] : $db->options['decimal_places'];
+            return 'DECIMAL('.$length.','.$scale.')';
+        }
+        return '';
+    }
+
+    // }}}
+    // {{{ _getDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare a generic type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name   name the field to be declared.
+     * @param array  $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      length
+     *          Integer value that determines the maximum length of the text
+     *          field. If this argument is missing the field should be
+     *          declared to have the longest length allowed by the DBMS.
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field.
+     * @access protected
+     */
+    function _getDeclarationOptions($field)
+    {
+        $charset = empty($field['charset']) ? '' :
+            ' '.$this->_getCharsetFieldDeclaration($field['charset']);
+
+        $default = '';
+        if (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $db =& $this->getDBInstance();
+                if (PEAR::isError($db)) {
+                    return $db;
+                }
+                $field['default'] = empty($field['notnull'])
+                    ? null : $this->valid_default_values[$field['type']];
+                if ($field['default'] === ''
+                    && ($db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL)
+                ) {
+                    $field['default'] = ' ';
+                }
+            }
+            $default = ' DEFAULT '.$this->quote($field['default'], $field['type']);
+        } elseif (empty($field['notnull'])) {
+            $default = ' DEFAULT NULL';
+        }
+
+        $notnull = empty($field['notnull']) ? ' NULL' : ' NOT NULL';
+        if ($default == ' DEFAULT NULL' && $notnull == ' NULL') {
+            $notnull = '';
+        }
+
+        $collation = empty($field['collation']) ? '' :
+            ' '.$this->_getCollationFieldDeclaration($field['collation']);
+        return $charset.$default.$notnull.$collation;
+    }
+
+    // }}}
+    // {{{ _getIntegerDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an integer type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string  $name   name the field to be declared.
+     * @param string  $field  associative array with the name of the properties
+     *                        of the field being declared as array indexes.
+     *                        Currently, the types of supported field
+     *                        properties are as follows:
+     *
+     *                       unsigned
+     *                        Boolean flag that indicates whether the field
+     *                        should be declared as unsigned integer if
+     *                        possible.
+     *
+     *                       default
+     *                        Integer value to be used as default for this
+     *                        field.
+     *
+     *                       notnull
+     *                        Boolean flag that indicates whether this field is
+     *                        constrained to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *                 declare the specified field.
+     * @access protected
+     */
+    function _getIntegerDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $default = $autoinc = '';;
+        if (!empty($field['autoincrement'])) {
+            $autoinc = ' IDENTITY PRIMARY KEY';
+        } elseif (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $field['default'] = empty($field['notnull']) ? null : 0;
+            }
+            $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
+        } elseif (empty($field['notnull'])) {
+            $default = ' DEFAULT NULL';
+        }
+
+        $notnull = empty($field['notnull']) ? ' NULL' : ' NOT NULL';
+        if ($default == ' DEFAULT NULL' && $notnull == ' NULL') {
+            $notnull = '';
+        }
+        if (!empty($field['unsigned'])) {
+            $db->warnings[] = "unsigned integer field \"$name\" is being declared as signed integer";
+        }
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$default.$notnull.$autoinc;
+    }
+
+    // }}}
+    // {{{ _getCLOBDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an character
+     * large object type field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *        of the field being declared as array indexes. Currently, the types
+     *        of supported field properties are as follows:
+     *
+     *        length
+     *            Integer value that determines the maximum length of the large
+     *            object field. If this argument is missing the field should be
+     *            declared to have the longest length allowed by the DBMS.
+     *
+     *        notnull
+     *            Boolean flag that indicates whether this field is constrained
+     *            to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *        declare the specified field.
+     * @access public
+     */
+    function _getCLOBDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $notnull = empty($field['notnull']) ? ' NULL' : ' NOT NULL';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$notnull;
+    }
+
+    // }}}
+    // {{{ _getBLOBDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an binary large
+     * object type field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *        of the field being declared as array indexes. Currently, the types
+     *        of supported field properties are as follows:
+     *
+     *        length
+     *            Integer value that determines the maximum length of the large
+     *            object field. If this argument is missing the field should be
+     *            declared to have the longest length allowed by the DBMS.
+     *
+     *        notnull
+     *            Boolean flag that indicates whether this field is constrained
+     *            to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *        declare the specified field.
+     * @access protected
+     */
+    function _getBLOBDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $notnull = empty($field['notnull']) ? ' NULL' : ' NOT NULL';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$notnull;
+    }
+
+    // }}}
+    // {{{ _quoteBLOB()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string  text string that represents the given argument value in
+     *                 a DBMS specific format.
+     * @access protected
+     */
+    function _quoteBLOB($value, $quote, $escape_wildcards)
+    {
+        if (!$quote) {
+            return $value;
+        }
+        $value = bin2hex("0x".$this->_readFile($value));
+        return $value;
+    }
+
+    // }}}
+    // {{{ _mapNativeDatatype()
+
+    /**
+     * Maps a native array description of a field to a MDB2 datatype and length
+     *
+     * @param array  $field native field description
+     * @return array containing the various possible types, length, sign, fixed
+     * @access public
+     */
+    function _mapNativeDatatype($field)
+    {
+        // todo: handle length of various int variations
+        $db_type = preg_replace('/\d/', '', strtolower($field['type']));
+        $length = $field['length'];
+        $type = array();
+        // todo: unsigned handling seems to be missing
+        $unsigned = $fixed = null;
+        switch ($db_type) {
+        case 'bit':
+            $type[0] = 'boolean';
+            break;
+        case 'tinyint':
+            $type[0] = 'integer';
+            $length = 1;
+            break;
+        case 'smallint':
+            $type[0] = 'integer';
+            $length = 2;
+            break;
+        case 'int':
+            $type[0] = 'integer';
+            $length = 4;
+            break;
+        case 'bigint':
+            $type[0] = 'integer';
+            $length = 8;
+            break;
+        case 'datetime':
+            $type[0] = 'timestamp';
+            break;
+        case 'float':
+        case 'real':
+        case 'numeric':
+            $type[0] = 'float';
+            break;
+        case 'decimal':
+        case 'money':
+            $type[0] = 'decimal';
+            $length = $field['numeric_precision'].','.$field['numeric_scale'];
+            break;
+        case 'text':
+        case 'ntext':
+        case 'varchar':
+        case 'nvarchar':
+            $fixed = false;
+        case 'char':
+        case 'nchar':
+            $type[0] = 'text';
+            if ($length == '1') {
+                $type[] = 'boolean';
+                if (preg_match('/^(is|has)/', $field['name'])) {
+                    $type = array_reverse($type);
+                }
+            } elseif (strstr($db_type, 'text')) {
+                $type[] = 'clob';
+                $type = array_reverse($type);
+            }
+            if ($fixed !== false) {
+                $fixed = true;
+            }
+            break;
+        case 'image':
+        case 'varbinary':
+            $type[] = 'blob';
+            $length = null;
+            break;
+        default:
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'unknown database attribute type: '.$db_type, __FUNCTION__);
+        }
+
+        if ((int)$length <= 0) {
+            $length = null;
+        }
+
+        return array($type, $length, $unsigned, $fixed);
+    }
+    // }}}
+}
+
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Datatype/mysql.php b/program/lib/MDB2/Driver/Datatype/mysql.php
new file mode 100644
index 0000000..388d0b2
--- /dev/null
+++ b/program/lib/MDB2/Driver/Datatype/mysql.php
@@ -0,0 +1,466 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysql.php,v 1.62 2007/11/09 20:54:58 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Datatype/Common.php';
+
+/**
+ * MDB2 MySQL driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Datatype_mysql extends MDB2_Driver_Datatype_Common
+{
+    // {{{ _getCharsetFieldDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the CHARACTER SET
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $charset   name of the charset
+     * @return string  DBMS specific SQL code portion needed to set the CHARACTER SET
+     *                 of a field declaration.
+     */
+    function _getCharsetFieldDeclaration($charset)
+    {
+        return 'CHARACTER SET '.$charset;
+    }
+
+    // }}}
+    // {{{ _getCollationFieldDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the COLLATION
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $collation   name of the collation
+     * @return string  DBMS specific SQL code portion needed to set the COLLATION
+     *                 of a field declaration.
+     */
+    function _getCollationFieldDeclaration($collation)
+    {
+        return 'COLLATE '.$collation;
+    }
+
+    // }}}
+    // {{{ getTypeDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an text type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param array $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      length
+     *          Integer value that determines the maximum length of the text
+     *          field. If this argument is missing the field should be
+     *          declared to have the longest length allowed by the DBMS.
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field.
+     * @access public
+     */
+    function getTypeDeclaration($field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        switch ($field['type']) {
+        case 'text':
+            if (empty($field['length']) && array_key_exists('default', $field)) {
+                $field['length'] = $db->varchar_max_length;
+            }
+            $length = !empty($field['length']) ? $field['length'] : false;
+            $fixed = !empty($field['fixed']) ? $field['fixed'] : false;
+            return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR(255)')
+                : ($length ? 'VARCHAR('.$length.')' : 'TEXT');
+        case 'clob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 255) {
+                    return 'TINYTEXT';
+                } elseif ($length <= 65532) {
+                    return 'TEXT';
+                } elseif ($length <= 16777215) {
+                    return 'MEDIUMTEXT';
+                }
+            }
+            return 'LONGTEXT';
+        case 'blob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 255) {
+                    return 'TINYBLOB';
+                } elseif ($length <= 65532) {
+                    return 'BLOB';
+                } elseif ($length <= 16777215) {
+                    return 'MEDIUMBLOB';
+                }
+            }
+            return 'LONGBLOB';
+        case 'integer':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 1) {
+                    return 'TINYINT';
+                } elseif ($length == 2) {
+                    return 'SMALLINT';
+                } elseif ($length == 3) {
+                    return 'MEDIUMINT';
+                } elseif ($length == 4) {
+                    return 'INT';
+                } elseif ($length > 4) {
+                    return 'BIGINT';
+                }
+            }
+            return 'INT';
+        case 'boolean':
+            return 'TINYINT(1)';
+        case 'date':
+            return 'DATE';
+        case 'time':
+            return 'TIME';
+        case 'timestamp':
+            return 'DATETIME';
+        case 'float':
+            return 'DOUBLE';
+        case 'decimal':
+            $length = !empty($field['length']) ? $field['length'] : 18;
+            $scale = !empty($field['scale']) ? $field['scale'] : $db->options['decimal_places'];
+            return 'DECIMAL('.$length.','.$scale.')';
+        }
+        return '';
+    }
+
+    // }}}
+    // {{{ _getIntegerDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an integer type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string  $name   name the field to be declared.
+     * @param string  $field  associative array with the name of the properties
+     *                        of the field being declared as array indexes.
+     *                        Currently, the types of supported field
+     *                        properties are as follows:
+     *
+     *                       unsigned
+     *                        Boolean flag that indicates whether the field
+     *                        should be declared as unsigned integer if
+     *                        possible.
+     *
+     *                       default
+     *                        Integer value to be used as default for this
+     *                        field.
+     *
+     *                       notnull
+     *                        Boolean flag that indicates whether this field is
+     *                        constrained to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *                 declare the specified field.
+     * @access protected
+     */
+    function _getIntegerDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $default = $autoinc = '';
+        if (!empty($field['autoincrement'])) {
+            $autoinc = ' AUTO_INCREMENT PRIMARY KEY';
+        } elseif (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $field['default'] = empty($field['notnull']) ? null : 0;
+            }
+            $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
+        } elseif (empty($field['notnull'])) {
+            $default = ' DEFAULT NULL';
+        }
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        $unsigned = empty($field['unsigned']) ? '' : ' UNSIGNED';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull.$autoinc;
+    }
+
+    // }}}
+    // {{{ matchPattern()
+
+    /**
+     * build a pattern matching string
+     *
+     * @access public
+     *
+     * @param array $pattern even keys are strings, odd are patterns (% and _)
+     * @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
+     * @param string $field optional field name that is being matched against
+     *                  (might be required when emulating ILIKE)
+     *
+     * @return string SQL pattern
+     */
+    function matchPattern($pattern, $operator = null, $field = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $match = '';
+        if (!is_null($operator)) {
+            $field = is_null($field) ? '' : $field.' ';
+            $operator = strtoupper($operator);
+            switch ($operator) {
+            // case insensitive
+            case 'ILIKE':
+                $match = $field.'LIKE ';
+                break;
+            // case sensitive
+            case 'LIKE':
+                $match = $field.'LIKE BINARY ';
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'not a supported operator type:'. $operator, __FUNCTION__);
+            }
+        }
+        $match.= "'";
+        foreach ($pattern as $key => $value) {
+            if ($key % 2) {
+                $match.= $value;
+            } else {
+                $match.= $db->escapePattern($db->escape($value));
+            }
+        }
+        $match.= "'";
+        $match.= $this->patternEscapeString();
+        return $match;
+    }
+
+    // }}}
+    // {{{ _mapNativeDatatype()
+
+    /**
+     * Maps a native array description of a field to a MDB2 datatype and length
+     *
+     * @param array  $field native field description
+     * @return array containing the various possible types, length, sign, fixed
+     * @access public
+     */
+    function _mapNativeDatatype($field)
+    {
+        $db_type = strtolower($field['type']);
+        $db_type = strtok($db_type, '(), ');
+        if ($db_type == 'national') {
+            $db_type = strtok('(), ');
+        }
+        if (!empty($field['length'])) {
+            $length = strtok($field['length'], ', ');
+            $decimal = strtok(', ');
+        } else {
+            $length = strtok('(), ');
+            $decimal = strtok('(), ');
+        }
+        $type = array();
+        $unsigned = $fixed = null;
+        switch ($db_type) {
+        case 'tinyint':
+            $type[] = 'integer';
+            $type[] = 'boolean';
+            if (preg_match('/^(is|has)/', $field['name'])) {
+                $type = array_reverse($type);
+            }
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 1;
+            break;
+        case 'smallint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 2;
+            break;
+        case 'mediumint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 3;
+            break;
+        case 'int':
+        case 'integer':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 4;
+            break;
+        case 'bigint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 8;
+            break;
+        case 'tinytext':
+        case 'mediumtext':
+        case 'longtext':
+        case 'text':
+        case 'varchar':
+            $fixed = false;
+        case 'string':
+        case 'char':
+            $type[] = 'text';
+            if ($length == '1') {
+                $type[] = 'boolean';
+                if (preg_match('/^(is|has)/', $field['name'])) {
+                    $type = array_reverse($type);
+                }
+            } elseif (strstr($db_type, 'text')) {
+                $type[] = 'clob';
+                if ($decimal == 'binary') {
+                    $type[] = 'blob';
+                }
+                $type = array_reverse($type);
+            }
+            if ($fixed !== false) {
+                $fixed = true;
+            }
+            break;
+        case 'enum':
+            $type[] = 'text';
+            preg_match_all('/\'.+\'/U', $field['type'], $matches);
+            $length = 0;
+            $fixed = false;
+            if (is_array($matches)) {
+                foreach ($matches[0] as $value) {
+                    $length = max($length, strlen($value)-2);
+                }
+                if ($length == '1' && count($matches[0]) == 2) {
+                    $type[] = 'boolean';
+                    if (preg_match('/^(is|has)/', $field['name'])) {
+                        $type = array_reverse($type);
+                    }
+                }
+            }
+            $type[] = 'integer';
+        case 'set':
+            $fixed = false;
+            $type[] = 'text';
+            $type[] = 'integer';
+            break;
+        case 'date':
+            $type[] = 'date';
+            $length = null;
+            break;
+        case 'datetime':
+        case 'timestamp':
+            $type[] = 'timestamp';
+            $length = null;
+            break;
+        case 'time':
+            $type[] = 'time';
+            $length = null;
+            break;
+        case 'float':
+        case 'double':
+        case 'real':
+            $type[] = 'float';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            break;
+        case 'unknown':
+        case 'decimal':
+        case 'numeric':
+            $type[] = 'decimal';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            if ($decimal !== false) {
+                $length = $length.','.$decimal;
+            }
+            break;
+        case 'tinyblob':
+        case 'mediumblob':
+        case 'longblob':
+        case 'blob':
+            $type[] = 'blob';
+            $length = null;
+            break;
+        case 'binary':
+        case 'varbinary':
+            $type[] = 'blob';
+            break;
+        case 'year':
+            $type[] = 'integer';
+            $type[] = 'date';
+            $length = null;
+            break;
+        default:
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'unknown database attribute type: '.$db_type, __FUNCTION__);
+        }
+
+        if ((int)$length <= 0) {
+            $length = null;
+        }
+
+        return array($type, $length, $unsigned, $fixed);
+    }
+
+    // }}}
+}
+
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Datatype/mysqli.php b/program/lib/MDB2/Driver/Datatype/mysqli.php
new file mode 100644
index 0000000..40f70f2
--- /dev/null
+++ b/program/lib/MDB2/Driver/Datatype/mysqli.php
@@ -0,0 +1,504 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysqli.php,v 1.61 2007/11/09 20:54:58 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Datatype/Common.php';
+
+/**
+ * MDB2 MySQLi driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Datatype_mysqli extends MDB2_Driver_Datatype_Common
+{
+    // {{{ _getCharsetFieldDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the CHARACTER SET
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $charset   name of the charset
+     * @return string  DBMS specific SQL code portion needed to set the CHARACTER SET
+     *                 of a field declaration.
+     */
+    function _getCharsetFieldDeclaration($charset)
+    {
+        return 'CHARACTER SET '.$charset;
+    }
+
+    // }}}
+    // {{{ _getCollationFieldDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the COLLATION
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $collation   name of the collation
+     * @return string  DBMS specific SQL code portion needed to set the COLLATION
+     *                 of a field declaration.
+     */
+    function _getCollationFieldDeclaration($collation)
+    {
+        return 'COLLATE '.$collation;
+    }
+
+    // }}}
+    // {{{ getTypeDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an text type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param array $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      length
+     *          Integer value that determines the maximum length of the text
+     *          field. If this argument is missing the field should be
+     *          declared to have the longest length allowed by the DBMS.
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field.
+     * @access public
+     */
+    function getTypeDeclaration($field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        switch ($field['type']) {
+        case 'text':
+            if (empty($field['length']) && array_key_exists('default', $field)) {
+                $field['length'] = $db->varchar_max_length;
+            }
+            $length = !empty($field['length']) ? $field['length'] : false;
+            $fixed = !empty($field['fixed']) ? $field['fixed'] : false;
+            return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR(255)')
+                : ($length ? 'VARCHAR('.$length.')' : 'TEXT');
+        case 'clob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 255) {
+                    return 'TINYTEXT';
+                } elseif ($length <= 65532) {
+                    return 'TEXT';
+                } elseif ($length <= 16777215) {
+                    return 'MEDIUMTEXT';
+                }
+            }
+            return 'LONGTEXT';
+        case 'blob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 255) {
+                    return 'TINYBLOB';
+                } elseif ($length <= 65532) {
+                    return 'BLOB';
+                } elseif ($length <= 16777215) {
+                    return 'MEDIUMBLOB';
+                }
+            }
+            return 'LONGBLOB';
+        case 'integer':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 1) {
+                    return 'TINYINT';
+                } elseif ($length == 2) {
+                    return 'SMALLINT';
+                } elseif ($length == 3) {
+                    return 'MEDIUMINT';
+                } elseif ($length == 4) {
+                    return 'INT';
+                } elseif ($length > 4) {
+                    return 'BIGINT';
+                }
+            }
+            return 'INT';
+        case 'boolean':
+            return 'TINYINT(1)';
+        case 'date':
+            return 'DATE';
+        case 'time':
+            return 'TIME';
+        case 'timestamp':
+            return 'DATETIME';
+        case 'float':
+            return 'DOUBLE';
+        case 'decimal':
+            $length = !empty($field['length']) ? $field['length'] : 18;
+            $scale = !empty($field['scale']) ? $field['scale'] : $db->options['decimal_places'];
+            return 'DECIMAL('.$length.','.$scale.')';
+        }
+        return '';
+    }
+
+    // }}}
+    // {{{ _getIntegerDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an integer type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string  $name   name the field to be declared.
+     * @param string  $field  associative array with the name of the properties
+     *                        of the field being declared as array indexes.
+     *                        Currently, the types of supported field
+     *                        properties are as follows:
+     *
+     *                       unsigned
+     *                        Boolean flag that indicates whether the field
+     *                        should be declared as unsigned integer if
+     *                        possible.
+     *
+     *                       default
+     *                        Integer value to be used as default for this
+     *                        field.
+     *
+     *                       notnull
+     *                        Boolean flag that indicates whether this field is
+     *                        constrained to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *                 declare the specified field.
+     * @access protected
+     */
+    function _getIntegerDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $default = $autoinc = '';
+        if (!empty($field['autoincrement'])) {
+            $autoinc = ' AUTO_INCREMENT PRIMARY KEY';
+        } elseif (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $field['default'] = empty($field['notnull']) ? null : 0;
+            }
+            $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
+        } elseif (empty($field['notnull'])) {
+            $default = ' DEFAULT NULL';
+        }
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        $unsigned = empty($field['unsigned']) ? '' : ' UNSIGNED';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull.$autoinc;
+    }
+
+    // }}}
+    // {{{ matchPattern()
+
+    /**
+     * build a pattern matching string
+     *
+     * @access public
+     *
+     * @param array $pattern even keys are strings, odd are patterns (% and _)
+     * @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
+     * @param string $field optional field name that is being matched against
+     *                  (might be required when emulating ILIKE)
+     *
+     * @return string SQL pattern
+     */
+    function matchPattern($pattern, $operator = null, $field = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $match = '';
+        if (!is_null($operator)) {
+            $field = is_null($field) ? '' : $field.' ';
+            $operator = strtoupper($operator);
+            switch ($operator) {
+            // case insensitive
+            case 'ILIKE':
+                $match = $field.'LIKE ';
+                break;
+            // case sensitive
+            case 'LIKE':
+                $match = $field.'LIKE BINARY ';
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'not a supported operator type:'. $operator, __FUNCTION__);
+            }
+        }
+        $match.= "'";
+        foreach ($pattern as $key => $value) {
+            if ($key % 2) {
+                $match.= $value;
+            } else {
+                $match.= $db->escapePattern($db->escape($value));
+            }
+        }
+        $match.= "'";
+        $match.= $this->patternEscapeString();
+        return $match;
+    }
+
+    // }}}
+    // {{{ _mapNativeDatatype()
+
+    /**
+     * Maps a native array description of a field to a MDB2 datatype and length
+     *
+     * @param array  $field native field description
+     * @return array containing the various possible types, length, sign, fixed
+     * @access public
+     */
+    function _mapNativeDatatype($field)
+    {
+        $db_type = strtolower($field['type']);
+        $db_type = strtok($db_type, '(), ');
+        if ($db_type == 'national') {
+            $db_type = strtok('(), ');
+        }
+        if (!empty($field['length'])) {
+            $length = strtok($field['length'], ', ');
+            $decimal = strtok(', ');
+        } else {
+            $length = strtok('(), ');
+            $decimal = strtok('(), ');
+        }
+        $type = array();
+        $unsigned = $fixed = null;
+        switch ($db_type) {
+        case 'tinyint':
+            $type[] = 'integer';
+            $type[] = 'boolean';
+            if (preg_match('/^(is|has)/', $field['name'])) {
+                $type = array_reverse($type);
+            }
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 1;
+            break;
+        case 'smallint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 2;
+            break;
+        case 'mediumint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 3;
+            break;
+        case 'int':
+        case 'integer':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 4;
+            break;
+        case 'bigint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 8;
+            break;
+        case 'tinytext':
+        case 'mediumtext':
+        case 'longtext':
+        case 'text':
+        case 'text':
+        case 'varchar':
+            $fixed = false;
+        case 'string':
+        case 'char':
+            $type[] = 'text';
+            if ($length == '1') {
+                $type[] = 'boolean';
+                if (preg_match('/^(is|has)/', $field['name'])) {
+                    $type = array_reverse($type);
+                }
+            } elseif (strstr($db_type, 'text')) {
+                $type[] = 'clob';
+                if ($decimal == 'binary') {
+                    $type[] = 'blob';
+                }
+                $type = array_reverse($type);
+            }
+            if ($fixed !== false) {
+                $fixed = true;
+            }
+            break;
+        case 'enum':
+            $type[] = 'text';
+            preg_match_all('/\'.+\'/U', $field['type'], $matches);
+            $length = 0;
+            $fixed = false;
+            if (is_array($matches)) {
+                foreach ($matches[0] as $value) {
+                    $length = max($length, strlen($value)-2);
+                }
+                if ($length == '1' && count($matches[0]) == 2) {
+                    $type[] = 'boolean';
+                    if (preg_match('/^(is|has)/', $field['name'])) {
+                        $type = array_reverse($type);
+                    }
+                }
+            }
+            $type[] = 'integer';
+        case 'set':
+            $fixed = false;
+            $type[] = 'text';
+            $type[] = 'integer';
+            break;
+        case 'date':
+            $type[] = 'date';
+            $length = null;
+            break;
+        case 'datetime':
+        case 'timestamp':
+            $type[] = 'timestamp';
+            $length = null;
+            break;
+        case 'time':
+            $type[] = 'time';
+            $length = null;
+            break;
+        case 'float':
+        case 'double':
+        case 'real':
+            $type[] = 'float';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            break;
+        case 'unknown':
+        case 'decimal':
+        case 'numeric':
+            $type[] = 'decimal';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            if ($decimal !== false) {
+                $length = $length.','.$decimal;
+            }
+            break;
+        case 'tinyblob':
+        case 'mediumblob':
+        case 'longblob':
+        case 'blob':
+            $type[] = 'blob';
+            $length = null;
+            break;
+        case 'binary':
+        case 'varbinary':
+            $type[] = 'blob';
+            break;
+        case 'year':
+            $type[] = 'integer';
+            $type[] = 'date';
+            $length = null;
+            break;
+        default:
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'unknown database attribute type: '.$db_type, __FUNCTION__);
+        }
+
+        if ((int)$length <= 0) {
+            $length = null;
+        }
+
+        return array($type, $length, $unsigned, $fixed);
+    }
+
+    // }}}
+    // {{{ mapPrepareDatatype()
+
+    /**
+     * Maps an MDB2 datatype to native prepare type
+     *
+     * @param string $type
+     * @return string
+     * @access public
+     */
+    function mapPrepareDatatype($type)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!empty($db->options['datatype_map'][$type])) {
+            $type = $db->options['datatype_map'][$type];
+            if (!empty($db->options['datatype_map_callback'][$type])) {
+                $parameter = array('type' => $type);
+                return call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
+            }
+        }
+
+        switch ($type) {
+            case 'integer':
+                return 'i';
+            case 'float':
+                return 'd';
+            case 'blob':
+                return 'b';
+            default:
+                break;
+        }
+        return 's';
+    }
+    
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Datatype/pgsql.php b/program/lib/MDB2/Driver/Datatype/pgsql.php
new file mode 100644
index 0000000..8a7e3ff
--- /dev/null
+++ b/program/lib/MDB2/Driver/Datatype/pgsql.php
@@ -0,0 +1,555 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Paul Cooper <pgc@ucecom.com>                                 |
+// +----------------------------------------------------------------------+
+//
+// $Id: pgsql.php,v 1.88 2007/11/09 20:54:58 quipo Exp $
+
+require_once 'MDB2/Driver/Datatype/Common.php';
+
+/**
+ * MDB2 PostGreSQL driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Driver_Datatype_pgsql extends MDB2_Driver_Datatype_Common
+{
+    // {{{ _baseConvertResult()
+
+    /**
+     * General type conversion method
+     *
+     * @param mixed   $value refernce to a value to be converted
+     * @param string  $type  specifies which type to convert to
+     * @param boolean $rtrim [optional] when TRUE [default], apply rtrim() to text
+     * @return object a MDB2 error on failure
+     * @access protected
+     */
+    function _baseConvertResult($value, $type, $rtrim = true)
+    {
+        if (is_null($value)) {
+            return null;
+        }
+        switch ($type) {
+        case 'boolean':
+            return $value == 't';
+        case 'float':
+            return doubleval($value);
+        case 'date':
+            return $value;
+        case 'time':
+            return substr($value, 0, strlen('HH:MM:SS'));
+        case 'timestamp':
+            return substr($value, 0, strlen('YYYY-MM-DD HH:MM:SS'));
+        case 'blob':
+            $value = pg_unescape_bytea($value);
+            return parent::_baseConvertResult($value, $type, $rtrim);
+        }
+        return parent::_baseConvertResult($value, $type, $rtrim);
+    }
+
+    // }}}
+    // {{{ getTypeDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an text type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param array $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      length
+     *          Integer value that determines the maximum length of the text
+     *          field. If this argument is missing the field should be
+     *          declared to have the longest length allowed by the DBMS.
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field.
+     * @access public
+     */
+    function getTypeDeclaration($field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        switch ($field['type']) {
+        case 'text':
+            $length = !empty($field['length'])
+                ? $field['length'] : $db->options['default_text_field_length'];
+            $fixed = !empty($field['fixed']) ? $field['fixed'] : false;
+            return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR('.$db->options['default_text_field_length'].')')
+                : ($length ? 'VARCHAR('.$length.')' : 'TEXT');
+        case 'clob':
+            return 'TEXT';
+        case 'blob':
+            return 'BYTEA';
+        case 'integer':
+            if (!empty($field['autoincrement'])) {
+                if (!empty($field['length'])) {
+                    $length = $field['length'];
+                    if ($length > 4) {
+                        return 'BIGSERIAL PRIMARY KEY';
+                    }
+                }
+                return 'SERIAL PRIMARY KEY';
+            }
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 2) {
+                    return 'SMALLINT';
+                } elseif ($length == 3 || $length == 4) {
+                    return 'INT';
+                } elseif ($length > 4) {
+                    return 'BIGINT';
+                }
+            }
+            return 'INT';
+        case 'boolean':
+            return 'BOOLEAN';
+        case 'date':
+            return 'DATE';
+        case 'time':
+            return 'TIME without time zone';
+        case 'timestamp':
+            return 'TIMESTAMP without time zone';
+        case 'float':
+            return 'FLOAT8';
+        case 'decimal':
+            $length = !empty($field['length']) ? $field['length'] : 18;
+            $scale = !empty($field['scale']) ? $field['scale'] : $db->options['decimal_places'];
+            return 'NUMERIC('.$length.','.$scale.')';
+        }
+    }
+
+    // }}}
+    // {{{ _getIntegerDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an integer type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string $name name the field to be declared.
+     * @param array $field associative array with the name of the properties
+     *       of the field being declared as array indexes. Currently, the types
+     *       of supported field properties are as follows:
+     *
+     *       unsigned
+     *           Boolean flag that indicates whether the field should be
+     *           declared as unsigned integer if possible.
+     *
+     *       default
+     *           Integer value to be used as default for this field.
+     *
+     *       notnull
+     *           Boolean flag that indicates whether this field is constrained
+     *           to not be set to null.
+     * @return string DBMS specific SQL code portion that should be used to
+     *       declare the specified field.
+     * @access protected
+     */
+    function _getIntegerDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!empty($field['unsigned'])) {
+            $db->warnings[] = "unsigned integer field \"$name\" is being declared as signed integer";
+        }
+        if (!empty($field['autoincrement'])) {
+            $name = $db->quoteIdentifier($name, true);
+            return $name.' '.$this->getTypeDeclaration($field);
+        }
+        $default = '';
+        if (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $field['default'] = empty($field['notnull']) ? null : 0;
+            }
+            $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
+        } elseif (empty($field['notnull'])) {
+            $default = ' DEFAULT NULL';
+        }
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$default.$notnull;
+    }
+
+    // }}}
+    // {{{ _quoteCLOB()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *      a DBMS specific format.
+     * @access protected
+     */
+    function _quoteCLOB($value, $quote, $escape_wildcards)
+    {
+        return $this->_quoteText($value, $quote, $escape_wildcards);
+    }
+
+    // }}}
+    // {{{ _quoteBLOB()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *      a DBMS specific format.
+     * @access protected
+     */
+    function _quoteBLOB($value, $quote, $escape_wildcards)
+    {
+        if (!$quote) {
+            return $value;
+        }
+        if (version_compare(PHP_VERSION, '5.2.0RC6', '>=')) {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            $connection = $db->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+            $value = @pg_escape_bytea($connection, $value);
+        } else {
+            $value = @pg_escape_bytea($value);
+        }
+        return "'".$value."'";
+    }
+
+    // }}}
+    // {{{ _quoteBoolean()
+
+    /**
+     * Convert a text value into a DBMS specific format that is suitable to
+     * compose query statements.
+     *
+     * @param string $value text string value that is intended to be converted.
+     * @param bool $quote determines if the value should be quoted and escaped
+     * @param bool $escape_wildcards if to escape escape wildcards
+     * @return string text string that represents the given argument value in
+     *       a DBMS specific format.
+     * @access protected
+     */
+    function _quoteBoolean($value, $quote, $escape_wildcards)
+    {
+        $value = $value ? 't' : 'f';
+        if (!$quote) {
+            return $value;
+        }
+        return "'".$value."'";
+    }
+
+    // }}}
+    // {{{ matchPattern()
+
+    /**
+     * build a pattern matching string
+     *
+     * @access public
+     *
+     * @param array $pattern even keys are strings, odd are patterns (% and _)
+     * @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
+     * @param string $field optional field name that is being matched against
+     *                  (might be required when emulating ILIKE)
+     *
+     * @return string SQL pattern
+     */
+    function matchPattern($pattern, $operator = null, $field = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $match = '';
+        if (!is_null($operator)) {
+            $field = is_null($field) ? '' : $field.' ';
+            $operator = strtoupper($operator);
+            switch ($operator) {
+            // case insensitive
+            case 'ILIKE':
+                $match = $field.'ILIKE ';
+                break;
+            // case sensitive
+            case 'LIKE':
+                $match = $field.'LIKE ';
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'not a supported operator type:'. $operator, __FUNCTION__);
+            }
+        }
+        $match.= "'";
+        foreach ($pattern as $key => $value) {
+            if ($key % 2) {
+                $match.= $value;
+            } else {
+                $match.= $db->escapePattern($db->escape($value));
+            }
+        }
+        $match.= "'";
+        $match.= $this->patternEscapeString();
+        return $match;
+    }
+
+    // }}}
+    // {{{ patternEscapeString()
+
+    /**
+     * build string to define escape pattern string
+     *
+     * @access public
+     *
+     *
+     * @return string define escape pattern
+     */
+    function patternEscapeString()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        return ' ESCAPE '.$this->quote($db->string_quoting['escape_pattern']);
+    }
+
+    // }}}
+    // {{{ _mapNativeDatatype()
+
+    /**
+     * Maps a native array description of a field to a MDB2 datatype and length
+     *
+     * @param array  $field native field description
+     * @return array containing the various possible types, length, sign, fixed
+     * @access public
+     */
+    function _mapNativeDatatype($field)
+    {
+        $db_type = strtolower($field['type']);
+        $length = $field['length'];
+        $type = array();
+        $unsigned = $fixed = null;
+        switch ($db_type) {
+        case 'smallint':
+        case 'int2':
+            $type[] = 'integer';
+            $unsigned = false;
+            $length = 2;
+            if ($length == '2') {
+                $type[] = 'boolean';
+                if (preg_match('/^(is|has)/', $field['name'])) {
+                    $type = array_reverse($type);
+                }
+            }
+            break;
+        case 'int':
+        case 'int4':
+        case 'integer':
+        case 'serial':
+        case 'serial4':
+            $type[] = 'integer';
+            $unsigned = false;
+            $length = 4;
+            break;
+        case 'bigint':
+        case 'int8':
+        case 'bigserial':
+        case 'serial8':
+            $type[] = 'integer';
+            $unsigned = false;
+            $length = 8;
+            break;
+        case 'bool':
+        case 'boolean':
+            $type[] = 'boolean';
+            $length = null;
+            break;
+        case 'text':
+        case 'varchar':
+            $fixed = false;
+        case 'unknown':
+        case 'char':
+        case 'bpchar':
+            $type[] = 'text';
+            if ($length == '1') {
+                $type[] = 'boolean';
+                if (preg_match('/^(is|has)/', $field['name'])) {
+                    $type = array_reverse($type);
+                }
+            } elseif (strstr($db_type, 'text')) {
+                $type[] = 'clob';
+                $type = array_reverse($type);
+            }
+            if ($fixed !== false) {
+                $fixed = true;
+            }
+            break;
+        case 'date':
+            $type[] = 'date';
+            $length = null;
+            break;
+        case 'datetime':
+        case 'timestamp':
+            $type[] = 'timestamp';
+            $length = null;
+            break;
+        case 'time':
+            $type[] = 'time';
+            $length = null;
+            break;
+        case 'float':
+        case 'float8':
+        case 'double':
+        case 'real':
+            $type[] = 'float';
+            break;
+        case 'decimal':
+        case 'money':
+        case 'numeric':
+            $type[] = 'decimal';
+            if (isset($field['scale'])) {
+                $length = $length.','.$field['scale'];
+            }
+            break;
+        case 'tinyblob':
+        case 'mediumblob':
+        case 'longblob':
+        case 'blob':
+        case 'bytea':
+            $type[] = 'blob';
+            $length = null;
+            break;
+        case 'oid':
+            $type[] = 'blob';
+            $type[] = 'clob';
+            $length = null;
+            break;
+        case 'year':
+            $type[] = 'integer';
+            $type[] = 'date';
+            $length = null;
+            break;
+        default:
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'unknown database attribute type: '.$db_type, __FUNCTION__);
+        }
+
+        if ((int)$length <= 0) {
+            $length = null;
+        }
+
+        return array($type, $length, $unsigned, $fixed);
+    }
+
+    // }}}
+    // {{{ mapPrepareDatatype()
+
+    /**
+     * Maps an mdb2 datatype to native prepare type
+     *
+     * @param string $type
+     * @return string
+     * @access public
+     */
+    function mapPrepareDatatype($type)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!empty($db->options['datatype_map'][$type])) {
+            $type = $db->options['datatype_map'][$type];
+            if (!empty($db->options['datatype_map_callback'][$type])) {
+                $parameter = array('type' => $type);
+                return call_user_func_array($db->options['datatype_map_callback'][$type], array(&$db, __FUNCTION__, $parameter));
+            }
+        }
+
+        switch ($type) {
+            case 'integer':
+                return 'int';
+            case 'boolean':
+                return 'bool';
+            case 'decimal':
+            case 'float':
+                return 'numeric';
+            case 'clob':
+                return 'text';
+            case 'blob':
+                return 'bytea';
+            default:
+                break;
+        }
+        return $type;
+    }
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Datatype/sqlite.php b/program/lib/MDB2/Driver/Datatype/sqlite.php
new file mode 100644
index 0000000..e518e45
--- /dev/null
+++ b/program/lib/MDB2/Driver/Datatype/sqlite.php
@@ -0,0 +1,412 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: sqlite.php,v 1.65 2007/12/03 20:59:51 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Datatype/Common.php';
+
+/**
+ * MDB2 SQLite driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Datatype_sqlite extends MDB2_Driver_Datatype_Common
+{
+    // {{{ _getCollationFieldDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to set the COLLATION
+     * of a field declaration to be used in statements like CREATE TABLE.
+     *
+     * @param string $collation name of the collation
+     *
+     * @return string DBMS specific SQL code portion needed to set the COLLATION
+     *                of a field declaration.
+     */
+    function _getCollationFieldDeclaration($collation)
+    {
+        return 'COLLATE '.$collation;
+    }
+
+    // }}}
+    // {{{ getTypeDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an text type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param array $field  associative array with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      length
+     *          Integer value that determines the maximum length of the text
+     *          field. If this argument is missing the field should be
+     *          declared to have the longest length allowed by the DBMS.
+     *
+     *      default
+     *          Text value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *      declare the specified field.
+     * @access public
+     */
+    function getTypeDeclaration($field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        switch ($field['type']) {
+        case 'text':
+            $length = !empty($field['length'])
+                ? $field['length'] : false;
+            $fixed = !empty($field['fixed']) ? $field['fixed'] : false;
+            return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR('.$db->options['default_text_field_length'].')')
+                : ($length ? 'VARCHAR('.$length.')' : 'TEXT');
+        case 'clob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 255) {
+                    return 'TINYTEXT';
+                } elseif ($length <= 65532) {
+                    return 'TEXT';
+                } elseif ($length <= 16777215) {
+                    return 'MEDIUMTEXT';
+                }
+            }
+            return 'LONGTEXT';
+        case 'blob':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 255) {
+                    return 'TINYBLOB';
+                } elseif ($length <= 65532) {
+                    return 'BLOB';
+                } elseif ($length <= 16777215) {
+                    return 'MEDIUMBLOB';
+                }
+            }
+            return 'LONGBLOB';
+        case 'integer':
+            if (!empty($field['length'])) {
+                $length = $field['length'];
+                if ($length <= 2) {
+                    return 'SMALLINT';
+                } elseif ($length == 3 || $length == 4) {
+                    return 'INTEGER';
+                } elseif ($length > 4) {
+                    return 'BIGINT';
+                }
+            }
+            return 'INTEGER';
+        case 'boolean':
+            return 'BOOLEAN';
+        case 'date':
+            return 'DATE';
+        case 'time':
+            return 'TIME';
+        case 'timestamp':
+            return 'DATETIME';
+        case 'float':
+            return 'DOUBLE'.($db->options['fixed_float'] ? '('.
+                ($db->options['fixed_float']+2).','.$db->options['fixed_float'].')' : '');
+        case 'decimal':
+            $length = !empty($field['length']) ? $field['length'] : 18;
+            $scale = !empty($field['scale']) ? $field['scale'] : $db->options['decimal_places'];
+            return 'DECIMAL('.$length.','.$scale.')';
+        }
+        return '';
+    }
+
+    // }}}
+    // {{{ _getIntegerDeclaration()
+
+    /**
+     * Obtain DBMS specific SQL code portion needed to declare an integer type
+     * field to be used in statements like CREATE TABLE.
+     *
+     * @param string  $name   name the field to be declared.
+     * @param string  $field  associative array with the name of the properties
+     *                        of the field being declared as array indexes.
+     *                        Currently, the types of supported field
+     *                        properties are as follows:
+     *
+     *                       unsigned
+     *                        Boolean flag that indicates whether the field
+     *                        should be declared as unsigned integer if
+     *                        possible.
+     *
+     *                       default
+     *                        Integer value to be used as default for this
+     *                        field.
+     *
+     *                       notnull
+     *                        Boolean flag that indicates whether this field is
+     *                        constrained to not be set to null.
+     * @return string  DBMS specific SQL code portion that should be used to
+     *                 declare the specified field.
+     * @access protected
+     */
+    function _getIntegerDeclaration($name, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $default = $autoinc = '';
+        if (!empty($field['autoincrement'])) {
+            $autoinc = ' PRIMARY KEY';
+        } elseif (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $field['default'] = empty($field['notnull']) ? null : 0;
+            }
+            $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
+        } elseif (empty($field['notnull'])) {
+            $default = ' DEFAULT NULL';
+        }
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        $unsigned = empty($field['unsigned']) ? '' : ' UNSIGNED';
+        $name = $db->quoteIdentifier($name, true);
+        return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull.$autoinc;
+    }
+
+    // }}}
+    // {{{ matchPattern()
+
+    /**
+     * build a pattern matching string
+     *
+     * @access public
+     *
+     * @param array $pattern even keys are strings, odd are patterns (% and _)
+     * @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
+     * @param string $field optional field name that is being matched against
+     *                  (might be required when emulating ILIKE)
+     *
+     * @return string SQL pattern
+     */
+    function matchPattern($pattern, $operator = null, $field = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $match = '';
+        if (!is_null($operator)) {
+            $field = is_null($field) ? '' : $field.' ';
+            $operator = strtoupper($operator);
+            switch ($operator) {
+            // case insensitive
+            case 'ILIKE':
+                $match = $field.'LIKE ';
+                break;
+            // case sensitive
+            case 'LIKE':
+                $match = $field.'LIKE ';
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'not a supported operator type:'. $operator, __FUNCTION__);
+            }
+        }
+        $match.= "'";
+        foreach ($pattern as $key => $value) {
+            if ($key % 2) {
+                $match.= $value;
+            } else {
+                $match.= $db->escapePattern($db->escape($value));
+            }
+        }
+        $match.= "'";
+        $match.= $this->patternEscapeString();
+        return $match;
+    }
+
+    // }}}
+    // {{{ _mapNativeDatatype()
+
+    /**
+     * Maps a native array description of a field to a MDB2 datatype and length
+     *
+     * @param array  $field native field description
+     * @return array containing the various possible types, length, sign, fixed
+     * @access public
+     */
+    function _mapNativeDatatype($field)
+    {
+        $db_type = strtolower($field['type']);
+        $length = !empty($field['length']) ? $field['length'] : null;
+        $unsigned = !empty($field['unsigned']) ? $field['unsigned'] : null;
+        $fixed = null;
+        $type = array();
+        switch ($db_type) {
+        case 'boolean':
+            $type[] = 'boolean';
+            break;
+        case 'tinyint':
+            $type[] = 'integer';
+            $type[] = 'boolean';
+            if (preg_match('/^(is|has)/', $field['name'])) {
+                $type = array_reverse($type);
+            }
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 1;
+            break;
+        case 'smallint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 2;
+            break;
+        case 'mediumint':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 3;
+            break;
+        case 'int':
+        case 'integer':
+        case 'serial':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 4;
+            break;
+        case 'bigint':
+        case 'bigserial':
+            $type[] = 'integer';
+            $unsigned = preg_match('/ unsigned/i', $field['type']);
+            $length = 8;
+            break;
+        case 'clob':
+            $type[] = 'clob';
+            $fixed  = false;
+            break;
+        case 'tinytext':
+        case 'mediumtext':
+        case 'longtext':
+        case 'text':
+        case 'varchar':
+        case 'varchar2':
+            $fixed = false;
+        case 'char':
+            $type[] = 'text';
+            if ($length == '1') {
+                $type[] = 'boolean';
+                if (preg_match('/^(is|has)/', $field['name'])) {
+                    $type = array_reverse($type);
+                }
+            } elseif (strstr($db_type, 'text')) {
+                $type[] = 'clob';
+                $type = array_reverse($type);
+            }
+            if ($fixed !== false) {
+                $fixed = true;
+            }
+            break;
+        case 'date':
+            $type[] = 'date';
+            $length = null;
+            break;
+        case 'datetime':
+        case 'timestamp':
+            $type[] = 'timestamp';
+            $length = null;
+            break;
+        case 'time':
+            $type[] = 'time';
+            $length = null;
+            break;
+        case 'float':
+        case 'double':
+        case 'real':
+            $type[] = 'float';
+            break;
+        case 'decimal':
+        case 'numeric':
+            $type[] = 'decimal';
+            $length = $length.','.$field['decimal'];
+            break;
+        case 'tinyblob':
+        case 'mediumblob':
+        case 'longblob':
+        case 'blob':
+            $type[] = 'blob';
+            $length = null;
+            break;
+        case 'year':
+            $type[] = 'integer';
+            $type[] = 'date';
+            $length = null;
+            break;
+        default:
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'unknown database attribute type: '.$db_type, __FUNCTION__);
+        }
+
+        if ((int)$length <= 0) {
+            $length = null;
+        }
+
+        return array($type, $length, $unsigned, $fixed);
+    }
+
+    // }}}
+}
+
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Function/Common.php b/program/lib/MDB2/Driver/Function/Common.php
new file mode 100644
index 0000000..74971e2
--- /dev/null
+++ b/program/lib/MDB2/Driver/Function/Common.php
@@ -0,0 +1,249 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: Common.php,v 1.19 2007/09/09 13:47:36 quipo Exp $
+//
+
+/**
+ * @package  MDB2
+ * @category Database
+ * @author   Lukas Smith <smith@pooteeweet.org>
+ */
+
+/**
+ * Base class for the function modules that is extended by each MDB2 driver
+ *
+ * To load this module in the MDB2 object:
+ * $mdb->loadModule('Function');
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Function_Common extends MDB2_Module_Common
+{
+    // {{{ executeStoredProc()
+
+    /**
+     * Execute a stored procedure and return any results
+     *
+     * @param string $name string that identifies the function to execute
+     * @param mixed  $params  array that contains the paramaters to pass the stored proc
+     * @param mixed   $types  array that contains the types of the columns in
+     *                        the result set
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function &executeStoredProc($name, $params = null, $types = null, $result_class = true, $result_wrap_class = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $error =& $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+        return $error;
+    }
+
+    // }}}
+    // {{{ functionTable()
+
+    /**
+     * return string for internal table used when calling only a function
+     *
+     * @return string for internal table used when calling only a function
+     * @access public
+     */
+    function functionTable()
+    {
+        return '';
+    }
+
+    // }}}
+    // {{{ now()
+
+    /**
+     * Return string to call a variable with the current timestamp inside an SQL statement
+     * There are three special variables for current date and time:
+     * - CURRENT_TIMESTAMP (date and time, TIMESTAMP type)
+     * - CURRENT_DATE (date, DATE type)
+     * - CURRENT_TIME (time, TIME type)
+     *
+     * @return string to call a variable with the current timestamp
+     * @access public
+     */
+    function now($type = 'timestamp')
+    {
+        switch ($type) {
+        case 'time':
+            return 'CURRENT_TIME';
+        case 'date':
+            return 'CURRENT_DATE';
+        case 'timestamp':
+        default:
+            return 'CURRENT_TIMESTAMP';
+        }
+    }
+
+    // }}}
+    // {{{ substring()
+
+    /**
+     * return string to call a function to get a substring inside an SQL statement
+     *
+     * @return string to call a function to get a substring
+     * @access public
+     */
+    function substring($value, $position = 1, $length = null)
+    {
+        if (!is_null($length)) {
+            return "SUBSTRING($value FROM $position FOR $length)";
+        }
+        return "SUBSTRING($value FROM $position)";
+    }
+
+    // }}}
+    // {{{ concat()
+
+    /**
+     * Returns string to concatenate two or more string parameters
+     *
+     * @param string $value1
+     * @param string $value2
+     * @param string $values...
+     * @return string to concatenate two strings
+     * @access public
+     */
+    function concat($value1, $value2)
+    {
+        $args = func_get_args();
+        return "(".implode(' || ', $args).")";
+    }
+
+    // }}}
+    // {{{ random()
+
+    /**
+     * return string to call a function to get random value inside an SQL statement
+     *
+     * @return return string to generate float between 0 and 1
+     * @access public
+     */
+    function random()
+    {
+        return 'RAND()';
+    }
+
+    // }}}
+    // {{{ lower()
+
+    /**
+     * return string to call a function to lower the case of an expression
+     *
+     * @param string $expression
+     * @return return string to lower case of an expression
+     * @access public
+     */
+    function lower($expression)
+    {
+        return "LOWER($expression)";
+    }
+
+    // }}}
+    // {{{ upper()
+
+    /**
+     * return string to call a function to upper the case of an expression
+     *
+     * @param string $expression
+     * @return return string to upper case of an expression
+     * @access public
+     */
+    function upper($expression)
+    {
+        return "UPPER($expression)";
+    }
+
+    // }}}
+    // {{{ length()
+
+    /**
+     * return string to call a function to get the length of a string expression
+     *
+     * @param string $expression
+     * @return return string to get the string expression length
+     * @access public
+     */
+    function length($expression)
+    {
+        return "LENGTH($expression)";
+    }
+
+    // }}}
+    // {{{ guid()
+
+    /**
+     * Returns global unique identifier
+     *
+     * @return string to get global unique identifier
+     * @access public
+     */
+    function guid()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $error =& $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+        return $error;
+    }
+
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Function/mssql.php b/program/lib/MDB2/Driver/Function/mssql.php
new file mode 100644
index 0000000..4ee0281
--- /dev/null
+++ b/program/lib/MDB2/Driver/Function/mssql.php
@@ -0,0 +1,178 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Frank M. Kromann <frank@kromann.info>                        |
+// +----------------------------------------------------------------------+
+//
+// $Id: mssql.php,v 1.15 2007/08/11 16:02:22 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Function/Common.php';
+
+// {{{ class MDB2_Driver_Function_mssql
+/**
+ * MDB2 MSSQL driver for the function modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Function_mssql extends MDB2_Driver_Function_Common
+{
+     // }}}
+    // {{{ executeStoredProc()
+
+    /**
+     * Execute a stored procedure and return any results
+     *
+     * @param string $name string that identifies the function to execute
+     * @param mixed  $params  array that contains the paramaters to pass the stored proc
+     * @param mixed   $types  array that contains the types of the columns in
+     *                        the result set
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function &executeStoredProc($name, $params = null, $types = null, $result_class = true, $result_wrap_class = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'EXECUTE '.$name;
+        $query .= $params ? ' '.implode(', ', $params) : '';
+        return $db->query($query, $types, $result_class, $result_wrap_class);
+    }
+
+    // }}}
+    // {{{ now()
+
+    /**
+     * Return string to call a variable with the current timestamp inside an SQL statement
+     * There are three special variables for current date and time:
+     * - CURRENT_TIMESTAMP (date and time, TIMESTAMP type)
+     * - CURRENT_DATE (date, DATE type)
+     * - CURRENT_TIME (time, TIME type)
+     *
+     * @return string to call a variable with the current timestamp
+     * @access public
+     */
+    function now($type = 'timestamp')
+    {
+        switch ($type) {
+        case 'time':
+        case 'date':
+        case 'timestamp':
+        default:
+            return 'GETDATE()';
+        }
+    }
+
+    // }}}
+    // {{{ substring()
+
+    /**
+     * return string to call a function to get a substring inside an SQL statement
+     *
+     * @return string to call a function to get a substring
+     * @access public
+     */
+    function substring($value, $position = 1, $length = null)
+    {
+        if (!is_null($length)) {
+            return "SUBSTRING($value, $position, $length)";
+        }
+        return "SUBSTRING($value, $position, LEN($value) - $position + 1)";
+    }
+
+    // }}}
+    // {{{ concat()
+
+    /**
+     * Returns string to concatenate two or more string parameters
+     *
+     * @param string $value1
+     * @param string $value2
+     * @param string $values...
+     * @return string to concatenate two strings
+     * @access public
+     **/
+    function concat($value1, $value2)
+    {
+        $args = func_get_args();
+        return "(".implode(' + ', $args).")";
+    }
+
+    // }}}
+    // {{{ length()
+
+    /**
+     * return string to call a function to get the length of a string expression
+     *
+     * @param string $expression
+     * @return return string to get the string expression length
+     * @access public
+     */
+    function length($expression)
+    {
+        return "LEN($expression)";
+    }
+
+    // }}}
+    // {{{ guid()
+
+    /**
+     * Returns global unique identifier
+     *
+     * @return string to get global unique identifier
+     * @access public
+     */
+    function guid()
+    {
+        return 'NEWID()';
+    }
+
+    // }}}
+}
+// }}}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Function/mysql.php b/program/lib/MDB2/Driver/Function/mysql.php
new file mode 100644
index 0000000..90dea81
--- /dev/null
+++ b/program/lib/MDB2/Driver/Function/mysql.php
@@ -0,0 +1,120 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysql.php,v 1.11 2007/01/12 11:29:12 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Function/Common.php';
+
+/**
+ * MDB2 MySQL driver for the function modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Function_mysql extends MDB2_Driver_Function_Common
+{
+     // }}}
+    // {{{ executeStoredProc()
+
+    /**
+     * Execute a stored procedure and return any results
+     *
+     * @param string $name string that identifies the function to execute
+     * @param mixed  $params  array that contains the paramaters to pass the stored proc
+     * @param mixed   $types  array that contains the types of the columns in
+     *                        the result set
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function &executeStoredProc($name, $params = null, $types = null, $result_class = true, $result_wrap_class = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'CALL '.$name;
+        $query .= $params ? '('.implode(', ', $params).')' : '()';
+        return $db->query($query, $types, $result_class, $result_wrap_class);
+    }
+
+    // }}}
+    // {{{ concat()
+
+    /**
+     * Returns string to concatenate two or more string parameters
+     *
+     * @param string $value1
+     * @param string $value2
+     * @param string $values...
+     * @return string to concatenate two strings
+     * @access public
+     **/
+    function concat($value1, $value2)
+    {
+        $args = func_get_args();
+        return "CONCAT(".implode(', ', $args).")";
+    }
+
+    // }}}
+    // {{{ guid()
+
+    /**
+     * Returns global unique identifier
+     *
+     * @return string to get global unique identifier
+     * @access public
+     */
+    function guid()
+    {
+        return 'UUID()';
+    }
+
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Function/mysqli.php b/program/lib/MDB2/Driver/Function/mysqli.php
new file mode 100644
index 0000000..5af55c1
--- /dev/null
+++ b/program/lib/MDB2/Driver/Function/mysqli.php
@@ -0,0 +1,128 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysqli.php,v 1.13 2007/01/12 11:29:12 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Function/Common.php';
+
+/**
+ * MDB2 MySQLi driver for the function modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Function_mysqli extends MDB2_Driver_Function_Common
+{
+     // }}}
+    // {{{ executeStoredProc()
+
+    /**
+     * Execute a stored procedure and return any results
+     *
+     * @param string $name string that identifies the function to execute
+     * @param mixed  $params  array that contains the paramaters to pass the stored proc
+     * @param mixed   $types  array that contains the types of the columns in
+     *                        the result set
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function &executeStoredProc($name, $params = null, $types = null, $result_class = true, $result_wrap_class = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $multi_query = $db->getOption('multi_query');
+        if (!$multi_query) {
+            $db->setOption('multi_query', true);
+        }
+        $query = 'CALL '.$name;
+        $query .= $params ? '('.implode(', ', $params).')' : '()';
+        $result =& $db->query($query, $types, $result_class, $result_wrap_class);
+        if (!$multi_query) {
+            $db->setOption('multi_query', false);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ concat()
+
+    /**
+     * Returns string to concatenate two or more string parameters
+     *
+     * @param string $value1
+     * @param string $value2
+     * @param string $values...
+     * @return string to concatenate two strings
+     * @access public
+     **/
+    function concat($value1, $value2)
+    {
+        $args = func_get_args();
+        return "CONCAT(".implode(', ', $args).")";
+    }
+
+    // }}}
+    // {{{ guid()
+
+    /**
+     * Returns global unique identifier
+     *
+     * @return string to get global unique identifier
+     * @access public
+     */
+    function guid()
+    {
+        return 'UUID()';
+    }
+
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Function/pgsql.php b/program/lib/MDB2/Driver/Function/pgsql.php
new file mode 100644
index 0000000..df1d455
--- /dev/null
+++ b/program/lib/MDB2/Driver/Function/pgsql.php
@@ -0,0 +1,99 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Paul Cooper <pgc@ucecom.com>                                 |
+// +----------------------------------------------------------------------+
+//
+// $Id: pgsql.php,v 1.9 2006/06/12 21:48:43 lsmith Exp $
+
+require_once 'MDB2/Driver/Function/Common.php';
+
+/**
+ * MDB2 MySQL driver for the function modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Function_pgsql extends MDB2_Driver_Function_Common
+{
+    // {{{ executeStoredProc()
+
+    /**
+     * Execute a stored procedure and return any results
+     *
+     * @param string $name string that identifies the function to execute
+     * @param mixed  $params  array that contains the paramaters to pass the stored proc
+     * @param mixed   $types  array that contains the types of the columns in
+     *                        the result set
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function &executeStoredProc($name, $params = null, $types = null, $result_class = true, $result_wrap_class = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT * FROM '.$name;
+        $query .= $params ? '('.implode(', ', $params).')' : '()';
+        return $db->query($query, $types, $result_class, $result_wrap_class);
+    }
+    // }}}
+    // {{{ random()
+
+    /**
+     * return string to call a function to get random value inside an SQL statement
+     *
+     * @return return string to generate float between 0 and 1
+     * @access public
+     */
+    function random()
+    {
+        return 'RANDOM()';
+    }
+
+    // }}}
+}
+?>
diff --git a/program/lib/MDB2/Driver/Function/sqlite.php b/program/lib/MDB2/Driver/Function/sqlite.php
new file mode 100644
index 0000000..3a4960b
--- /dev/null
+++ b/program/lib/MDB2/Driver/Function/sqlite.php
@@ -0,0 +1,125 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: sqlite.php,v 1.8 2006/06/13 22:55:55 lsmith Exp $
+//
+
+require_once 'MDB2/Driver/Function/Common.php';
+
+/**
+ * MDB2 SQLite driver for the function modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Function_sqlite extends MDB2_Driver_Function_Common
+{
+    // {{{ constructor
+
+    /**
+     * Constructor
+     */
+    function __construct($db_index)
+    {
+        parent::__construct($db_index);
+        // create all sorts of UDFs
+    }
+
+    // {{{ now()
+
+    /**
+     * Return string to call a variable with the current timestamp inside an SQL statement
+     * There are three special variables for current date and time.
+     *
+     * @return string to call a variable with the current timestamp
+     * @access public
+     */
+    function now($type = 'timestamp')
+    {
+        switch ($type) {
+        case 'time':
+            return 'time(\'now\')';
+        case 'date':
+            return 'date(\'now\')';
+        case 'timestamp':
+        default:
+            return 'datetime(\'now\')';
+        }
+    }
+
+    // }}}
+    // {{{ substring()
+
+    /**
+     * return string to call a function to get a substring inside an SQL statement
+     *
+     * @return string to call a function to get a substring
+     * @access public
+     */
+    function substring($value, $position = 1, $length = null)
+    {
+        if (!is_null($length)) {
+            return "substr($value,$position,$length)";
+        }
+        return "substr($value,$position,length($value))";
+    }
+
+    // }}}
+    // {{{ random()
+
+    /**
+     * return string to call a function to get random value inside an SQL statement
+     *
+     * @return return string to generate float between 0 and 1
+     * @access public
+     */
+    function random()
+    {
+        return '((RANDOM()+2147483648)/4294967296)';
+    }
+
+    // }}}
+}
+?>
diff --git a/program/lib/MDB2/Driver/Manager/Common.php b/program/lib/MDB2/Driver/Manager/Common.php
new file mode 100644
index 0000000..da2e329
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/Common.php
@@ -0,0 +1,935 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: Common.php,v 1.68 2007/12/03 20:59:15 quipo Exp $
+//
+
+/**
+ * @package  MDB2
+ * @category Database
+ * @author   Lukas Smith <smith@pooteeweet.org>
+ */
+
+/**
+ * Base class for the management modules that is extended by each MDB2 driver
+ *
+ * To load this module in the MDB2 object:
+ * $mdb->loadModule('Manager');
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Manager_Common extends MDB2_Module_Common
+{
+    // {{{ splitTableSchema()
+
+    /**
+     * Split the "[owner|schema].table" notation into an array
+     * @access private
+     */
+    function splitTableSchema($table)
+    {
+        $ret = array();
+        if (strpos($table, '.') !== false) {
+            return explode('.', $table);
+        }
+        return array(null, $table);
+    }
+
+    // }}}
+    // {{{ getFieldDeclarationList()
+
+    /**
+     * Get declaration of a number of field in bulk
+     *
+     * @param array $fields  a multidimensional associative array.
+     *      The first dimension determines the field name, while the second
+     *      dimension is keyed with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      default
+     *          Boolean value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     *
+     * @return mixed string on success, a MDB2 error on failure
+     * @access public
+     */
+    function getFieldDeclarationList($fields)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!is_array($fields) || empty($fields)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'missing any fields', __FUNCTION__);
+        }
+        foreach ($fields as $field_name => $field) {
+            $query = $db->getDeclaration($field['type'], $field_name, $field);
+            if (PEAR::isError($query)) {
+                return $query;
+            }
+            $query_fields[] = $query;
+        }
+        return implode(', ', $query_fields);
+    }
+
+    // }}}
+    // {{{ _fixSequenceName()
+
+    /**
+     * Removes any formatting in an sequence name using the 'seqname_format' option
+     *
+     * @param string $sqn string that containts name of a potential sequence
+     * @param bool $check if only formatted sequences should be returned
+     * @return string name of the sequence with possible formatting removed
+     * @access protected
+     */
+    function _fixSequenceName($sqn, $check = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $seq_pattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $db->options['seqname_format']).'$/i';
+        $seq_name = preg_replace($seq_pattern, '\\1', $sqn);
+        if ($seq_name && !strcasecmp($sqn, $db->getSequenceName($seq_name))) {
+            return $seq_name;
+        }
+        if ($check) {
+            return false;
+        }
+        return $sqn;
+    }
+
+    // }}}
+    // {{{ _fixIndexName()
+
+    /**
+     * Removes any formatting in an index name using the 'idxname_format' option
+     *
+     * @param string $idx string that containts name of anl index
+     * @return string name of the index with eventual formatting removed
+     * @access protected
+     */
+    function _fixIndexName($idx)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $idx_pattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $db->options['idxname_format']).'$/i';
+        $idx_name = preg_replace($idx_pattern, '\\1', $idx);
+        if ($idx_name && !strcasecmp($idx, $db->getIndexName($idx_name))) {
+            return $idx_name;
+        }
+        return $idx;
+    }
+
+    // }}}
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset, collation info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($database, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($database)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ _getCreateTableQuery()
+
+    /**
+     * Create a basic SQL query for a new table creation
+     *
+     * @param string $name    Name of the database that should be created
+     * @param array  $fields  Associative array that contains the definition of each field of the new table
+     * @param array  $options An associative array of table options
+     *
+     * @return mixed string (the SQL query) on success, a MDB2 error on failure
+     * @see createTable()
+     */
+    function _getCreateTableQuery($name, $fields, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!$name) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                'no valid table name specified', __FUNCTION__);
+        }
+        if (empty($fields)) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                'no fields specified for table "'.$name.'"', __FUNCTION__);
+        }
+        $query_fields = $this->getFieldDeclarationList($fields);
+        if (PEAR::isError($query_fields)) {
+            return $query_fields;
+        }
+        if (!empty($options['primary'])) {
+            $query_fields.= ', PRIMARY KEY ('.implode(', ', array_keys($options['primary'])).')';
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $result = 'CREATE ';
+        if (!empty($options['temporary'])) {
+            $result .= $this->_getTemporaryTableQuery();
+        }
+        $result .= " TABLE $name ($query_fields)";
+        return $result;
+    }
+
+    // }}}
+    // {{{ _getTemporaryTableQuery()
+
+    /**
+     * A method to return the required SQL string that fits between CREATE ... TABLE
+     * to create the table as a temporary table.
+     *
+     * Should be overridden in driver classes to return the correct string for the
+     * specific database type.
+     *
+     * The default is to return the string "TEMPORARY" - this will result in a
+     * SQL error for any database that does not support temporary tables, or that
+     * requires a different SQL command from "CREATE TEMPORARY TABLE".
+     *
+     * @return string The string required to be placed between "CREATE" and "TABLE"
+     *                to generate a temporary table, if possible.
+     */
+    function _getTemporaryTableQuery()
+    {
+        return 'TEMPORARY';
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     *                       The indexes of the array entries are the names of the fields of the table an
+     *                       the array entry values are associative arrays like those that are meant to be
+     *                       passed with the field definitions to get[Type]Declaration() functions.
+     *                          array(
+     *                              'id' => array(
+     *                                  'type' => 'integer',
+     *                                  'unsigned' => 1
+     *                                  'notnull' => 1
+     *                                  'default' => 0
+     *                              ),
+     *                              'name' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              ),
+     *                              'password' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              )
+     *                          );
+     * @param array $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'temporary' => true|false,
+     *                          );
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        $query = $this->_getCreateTableQuery($name, $fields, $options);
+        if (PEAR::isError($query)) {
+            return $query;
+        }
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropTable()
+
+    /**
+     * drop an existing table
+     *
+     * @param string $name name of the table that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropTable($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("DROP TABLE $name");
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+      * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implementedd', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @param string database, the current is default
+     *               NB: not all the drivers can get the view names from
+     *               a database other than the current one
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listTableViews()
+
+    /**
+     * list the views in the database that reference a given table
+     *
+     * @param string table for which all referenced views should be found
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableViews($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @param string database, the current is default.
+     *               NB: not all the drivers can get the table names from
+     *               a database other than the current one
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ createIndex()
+
+    /**
+     * Get the stucture of a field into an array
+     *
+     * @param string    $table         name of the table on which the index is to be created
+     * @param string    $name         name of the index to be created
+     * @param array     $definition        associative array that defines properties of the index to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the index fields as array
+     *                                 indexes. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the index that are specific to
+     *                                 each field.
+     *
+     *                                Currently, only the sorting property is supported. It should be used
+     *                                 to define the sorting direction of the index. It may be set to either
+     *                                 ascending or descending.
+     *
+     *                                Not all DBMS support index sorting direction configuration. The DBMS
+     *                                 drivers of those that do not support it ignore this property. Use the
+     *                                 function supports() to determine whether the DBMS driver can manage indexes.
+     *
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(
+     *                                                'sorting' => 'ascending'
+     *                                            ),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createIndex($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        $query = "CREATE INDEX $name ON $table";
+        $fields = array();
+        foreach (array_keys($definition['fields']) as $field) {
+            $fields[] = $db->quoteIdentifier($field, true);
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string    $table         name of table that should be used in method
+     * @param string    $name         name of the index to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("DROP INDEX $name");
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        return '';
+    }
+
+    // }}}
+    // {{{ createConstraint()
+
+    /**
+     * create a constraint on a table
+     *
+     * @param string    $table       name of the table on which the constraint is to be created
+     * @param string    $name        name of the constraint to be created
+     * @param array     $definition  associative array that defines properties of the constraint to be created.
+     *                               The full structure of the array looks like this:
+     *          <pre>
+     *          array (
+     *              [primary] => 0
+     *              [unique]  => 0
+     *              [foreign] => 1
+     *              [check]   => 0
+     *              [fields] => array (
+     *                  [field1name] => array() // one entry per each field covered
+     *                  [field2name] => array() // by the index
+     *                  [field3name] => array(
+     *                      [sorting]  => ascending
+     *                      [position] => 3
+     *                  )
+     *              )
+     *              [references] => array(
+     *                  [table] => name
+     *                  [fields] => array(
+     *                      [field1name] => array(  //one entry per each referenced field
+     *                           [position] => 1
+     *                      )
+     *                  )
+     *              )
+     *              [deferrable] => 0
+     *              [initiallydeferred] => 0
+     *              [onupdate] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
+     *              [ondelete] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
+     *              [match] => SIMPLE|PARTIAL|FULL
+     *          );
+     *          </pre>
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createConstraint($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        $query = "ALTER TABLE $table ADD CONSTRAINT $name";
+        if (!empty($definition['primary'])) {
+            $query.= ' PRIMARY KEY';
+        } elseif (!empty($definition['unique'])) {
+            $query.= ' UNIQUE';
+        } elseif (!empty($definition['foreign'])) {
+            $query.= ' FOREIGN KEY';
+        }
+        $fields = array();
+        foreach (array_keys($definition['fields']) as $field) {
+            $fields[] = $db->quoteIdentifier($field, true);
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        if (!empty($definition['foreign'])) {
+            $query.= ' REFERENCES ' . $db->quoteIdentifier($definition['references']['table'], true);
+            $referenced_fields = array();
+            foreach (array_keys($definition['references']['fields']) as $field) {
+                $referenced_fields[] = $db->quoteIdentifier($field, true);
+            }
+            $query .= ' ('. implode(', ', $referenced_fields) . ')';
+            $query .= $this->_getAdvancedFKOptions($definition);
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropConstraint()
+
+    /**
+     * drop existing constraint
+     *
+     * @param string    $table        name of table that should be used in method
+     * @param string    $name         name of the constraint to be dropped
+     * @param string    $primary      hint if the constraint is primary
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropConstraint($table, $name, $primary = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("ALTER TABLE $table DROP CONSTRAINT $name");
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string    $seq_name     name of the sequence to be created
+     * @param string    $start         start value of the sequence; default is 1
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string    $seq_name     name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @param string database, the current is default
+     *               NB: not all the drivers can get the sequence names from
+     *               a database other than the current one
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/mssql.php b/program/lib/MDB2/Driver/Manager/mssql.php
new file mode 100644
index 0000000..9cc66f3
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/mssql.php
@@ -0,0 +1,815 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Authors: Frank M. Kromann <frank@kromann.info>                       |
+// |          David Coallier <davidc@php.net>                             |
+// |          Lorenzo Alberton <l.alberton@quipo.it>                      |
+// +----------------------------------------------------------------------+
+//
+// $Id: mssql.php,v 1.93 2007/12/03 20:59:15 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+// {{{ class MDB2_Driver_Manager_mssql
+
+/**
+ * MDB2 MSSQL driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Frank M. Kromann <frank@kromann.info>
+ * @author  David Coallier <davidc@php.net>
+ * @author  Lorenzo Alberton <l.alberton@quipo.it>
+ */
+class MDB2_Driver_Manager_mssql extends MDB2_Driver_Manager_Common
+{
+    // {{{ createDatabase()
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with collation info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $query = "CREATE DATABASE $name";
+        if ($db->options['database_device']) {
+            $query.= ' ON '.$db->options['database_device'];
+            $query.= $db->options['database_size'] ? '=' .
+                     $db->options['database_size'] : '';
+        }
+        if (!empty($options['collation'])) {
+            $query .= ' COLLATE ' . $options['collation'];
+        }
+        return $db->standaloneQuery($query, null, true);
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->standaloneQuery("DROP DATABASE $name", null, true);
+    }
+
+    // }}}
+    // {{{ _getTemporaryTableQuery()
+
+    /**
+     * Override the parent method.
+     *
+     * @return string The string required to be placed between "CREATE" and "TABLE"
+     *                to generate a temporary table, if possible.
+     */
+    function _getTemporaryTableQuery()
+    {
+        return '';
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     *
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['onupdate'])) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete'])) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array  $fields Associative array that contains the definition of each field of the new table
+     *                       The indexes of the array entries are the names of the fields of the table an
+     *                       the array entry values are associative arrays like those that are meant to be
+     *                       passed with the field definitions to get[Type]Declaration() functions.
+     *
+     *                      Example
+     *                        array(
+     *
+     *                            'id' => array(
+     *                                'type' => 'integer',
+     *                                'unsigned' => 1,
+     *                                'notnull' => 1,
+     *                                'default' => 0,
+     *                            ),
+     *                            'name' => array(
+     *                                'type' => 'text',
+     *                                'length' => 12,
+     *                            ),
+     *                            'description' => array(
+     *                                'type' => 'text',
+     *                                'length' => 12,
+     *                            )
+     *                        );
+     * @param array $options An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'temporary' => true|false,
+     *                          );
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        if (!empty($options['temporary'])) {
+            $name = '#'.$name;
+        }
+        return parent::createTable($name, $fields, $options);
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string  $name    name of the table that is intended to be changed.
+     * @param array   $changes associative array that contains the details of each type
+     *                         of change that is intended to be performed. The types of
+     *                         changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check   indicates whether the function should just check if the DBMS driver
+     *                         can perform the requested table alterations if the value is true or
+     *                         actually perform them otherwise.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+                break;
+            case 'remove':
+                break;
+            case 'name':
+            case 'rename':
+            case 'change':
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        $query = '';
+        if (!empty($changes['add']) && is_array($changes['add'])) {
+            foreach ($changes['add'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                } else {
+                    $query.= 'ADD COLUMN ';
+                }
+                $query.= $db->getDeclaration($field['type'], $field_name, $field);
+            }
+        }
+
+        if (!empty($changes['remove']) && is_array($changes['remove'])) {
+            foreach ($changes['remove'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $query.= 'DROP COLUMN ' . $field_name;
+            }
+        }
+
+        if (!$query) {
+            return MDB2_OK;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("ALTER TABLE $name $query");
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables()
+    {
+        $db =& $this->getDBInstance();
+
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'EXEC sp_tables @table_type = "\'TABLE\'"';
+        $table_names = $db->queryCol($query, null, 2);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if (!$this->_fixSequenceName($table_name, true)) {
+                $result[] = $table_name;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
+                        'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     *
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        
+        $table = $db->quoteIdentifier($table, true);
+        $columns = $db->queryCol("SELECT c.name
+                                    FROM syscolumns c
+                               LEFT JOIN sysobjects o ON c.id = o.id
+                                   WHERE o.name = '$table'");
+        if (PEAR::isError($columns)) {
+            return $columns;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $columns = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $columns);
+        }
+        return $columns;
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     *
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'INDEX_NAME';
+        $pk_name = 'PK_NAME';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $pk_name  = strtolower($pk_name);
+            } else {
+                $key_name = strtoupper($key_name);
+                $pk_name  = strtoupper($pk_name);
+            }
+        }
+        $table = $db->quote($table, 'text');
+        $query = "EXEC sp_statistics @table_name=$table";
+        $indexes = $db->queryCol($query, 'text', $key_name);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+        $query = "EXEC sp_pkeys @table_name=$table";
+        $pk_all = $db->queryCol($query, 'text', $pk_name);
+        $result = array();
+        foreach ($indexes as $index) {
+            if (!in_array($index, $pk_all) && ($index = $this->_fixIndexName($index))) {
+                $result[$index] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->queryCol('SELECT name FROM sys.databases');
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->queryCol('SELECT DISTINCT loginame FROM master..sysprocesses');
+        if (PEAR::isError($result) || empty($result)) {
+            return $result;
+        }
+        foreach (array_keys($result) as $k) {
+            $result[$k] = trim($result[$k]);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name
+                    FROM sysobjects
+                   WHERE objectproperty(id, N'IsMSShipped') = 0
+                    AND (objectproperty(id, N'IsTableFunction') = 1
+                     OR objectproperty(id, N'IsScalarFunction') = 1)";
+        /*
+        SELECT ROUTINE_NAME
+          FROM INFORMATION_SCHEMA.ROUTINES
+         WHERE ROUTINE_TYPE = 'FUNCTION'
+        */
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     *
+     * @return mixed array of trigger names on success,  otherwise, false which
+     *               could be a db error if the db is not instantiated or could
+     *               be the results of the error that occured during the
+     *               querying of the sysobject module.
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $query = "SELECT o.name
+                    FROM sysobjects o
+                   WHERE xtype = 'TR'
+                     AND OBJECTPROPERTY(o.id, 'IsMSShipped') = 0";
+        if (!is_null($table)) {
+            $query .= " AND object_name(parent_obj) = $table";
+        }
+
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE &&
+            $db->options['field_case'] == CASE_LOWER)
+        {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
+                'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @param string database, the current is default
+     *
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name
+                    FROM sysobjects
+                   WHERE xtype = 'V'";
+        /*
+        SELECT *
+          FROM sysobjects
+         WHERE objectproperty(id, N'IsMSShipped') = 0
+           AND objectproperty(id, N'IsView') = 1
+        */
+
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE &&
+            $db->options['field_case'] == CASE_LOWER)
+        {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
+                          'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string $table name of table that should be used in method
+     * @param string $name  name of the index to be dropped
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("DROP INDEX $table.$name");
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     *
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        $table = $db->quoteIdentifier($table, true);
+        
+        $query = "SELECT c.constraint_name
+                    FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS c
+                   WHERE c.constraint_catalog = DB_NAME()
+                     AND c.table_name = '$table'";
+        $constraints = $db->queryCol($query);
+        if (PEAR::isError($constraints)) {
+            return $constraints;
+        }
+
+        $result = array();
+        foreach ($constraints as $constraint) {
+            $constraint = $this->_fixIndexName($constraint);
+            if (!empty($constraint)) {
+                $result[$constraint] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string $seq_name  name of the sequence to be created
+     * @param string $start     start value of the sequence; default is 1
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
+        $query = "CREATE TABLE $sequence_name ($seqcol_name " .
+                 "INT PRIMARY KEY CLUSTERED IDENTITY($start,1) NOT NULL)";
+
+        $res = $db->exec($query);
+        if (PEAR::isError($res)) {
+            return $res;
+        }
+
+        $query = "SET IDENTITY_INSERT $sequence_name ON ".
+                 "INSERT INTO $sequence_name ($seqcol_name) VALUES ($start)";
+        $res = $db->exec($query);
+
+        if (!PEAR::isError($res)) {
+            return MDB2_OK;
+        }
+
+        $result = $db->exec("DROP TABLE $sequence_name");
+        if (PEAR::isError($result)) {
+            return $db->raiseError($result, null, null,
+                'could not drop inconsistent sequence table', __FUNCTION__);
+        }
+
+        return $db->raiseError($res, null, null,
+            'could not create sequence table', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * This function drops an existing sequence
+     *
+     * @param string $seq_name name of the sequence to be dropped
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP TABLE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sysobjects WHERE xtype = 'U'";
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if ($sqn = $this->_fixSequenceName($table_name, true)) {
+                $result[] = $sqn;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
+                          'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+}
+
+// }}}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/mysql.php b/program/lib/MDB2/Driver/Manager/mysql.php
new file mode 100644
index 0000000..84109be
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/mysql.php
@@ -0,0 +1,1064 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysql.php,v 1.100 2007/12/03 20:59:15 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+/**
+ * MDB2 MySQL driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Manager_mysql extends MDB2_Driver_Manager_Common
+{
+
+    // }}}
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset, collation info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name  = $db->quoteIdentifier($name, true);
+        $query = 'CREATE DATABASE ' . $name;
+        if (!empty($options['charset'])) {
+            $query .= ' DEFAULT CHARACTER SET ' . $options['charset'];
+        }
+        if (!empty($options['collation'])) {
+            $query .= ' COLLATE ' . $options['collation'];
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $query = "DROP DATABASE $name";
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['match'])) {
+            $query .= ' MATCH '.$definition['match'];
+        }
+        if (!empty($definition['onupdate'])) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete'])) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     *                       The indexes of the array entries are the names of the fields of the table an
+     *                       the array entry values are associative arrays like those that are meant to be
+     *                       passed with the field definitions to get[Type]Declaration() functions.
+     *                          array(
+     *                              'id' => array(
+     *                                  'type' => 'integer',
+     *                                  'unsigned' => 1
+     *                                  'notnull' => 1
+     *                                  'default' => 0
+     *                              ),
+     *                              'name' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              ),
+     *                              'password' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              )
+     *                          );
+     * @param array $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'charset' => 'utf8',
+     *                              'collate' => 'utf8_unicode_ci',
+     *                              'type'    => 'innodb',
+     *                          );
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = $this->_getCreateTableQuery($name, $fields, $options);
+        if (PEAR::isError($query)) {
+            return $query;
+        }
+
+        $options_strings = array();
+
+        if (!empty($options['comment'])) {
+            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
+        }
+
+        if (!empty($options['charset'])) {
+            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
+            if (!empty($options['collate'])) {
+                $options_strings['charset'].= ' COLLATE '.$options['collate'];
+            }
+        }
+
+        $type = false;
+        if (!empty($options['type'])) {
+            $type = $options['type'];
+        } elseif ($db->options['default_table_type']) {
+            $type = $db->options['default_table_type'];
+        }
+        if ($type) {
+            $options_strings[] = "ENGINE = $type";
+        }
+
+        if (!empty($options_strings)) {
+            $query .= ' '.implode(' ', $options_strings);
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+      * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+            case 'remove':
+            case 'change':
+            case 'rename':
+            case 'name':
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        $query = '';
+        if (!empty($changes['name'])) {
+            $change_name = $db->quoteIdentifier($changes['name'], true);
+            $query .= 'RENAME TO ' . $change_name;
+        }
+
+        if (!empty($changes['add']) && is_array($changes['add'])) {
+            foreach ($changes['add'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $query.= 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
+            }
+        }
+
+        if (!empty($changes['remove']) && is_array($changes['remove'])) {
+            foreach ($changes['remove'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $query.= 'DROP ' . $field_name;
+            }
+        }
+
+        $rename = array();
+        if (!empty($changes['rename']) && is_array($changes['rename'])) {
+            foreach ($changes['rename'] as $field_name => $field) {
+                $rename[$field['name']] = $field_name;
+            }
+        }
+
+        if (!empty($changes['change']) && is_array($changes['change'])) {
+            foreach ($changes['change'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                if (isset($rename[$field_name])) {
+                    $old_field_name = $rename[$field_name];
+                    unset($rename[$field_name]);
+                } else {
+                    $old_field_name = $field_name;
+                }
+                $old_field_name = $db->quoteIdentifier($old_field_name, true);
+                $query.= "CHANGE $old_field_name " . $db->getDeclaration($field['definition']['type'], $field_name, $field['definition']);
+            }
+        }
+
+        if (!empty($rename) && is_array($rename)) {
+            foreach ($rename as $rename_name => $renamed_field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field = $changes['rename'][$renamed_field];
+                $renamed_field = $db->quoteIdentifier($renamed_field, true);
+                $query.= 'CHANGE ' . $renamed_field . ' ' . $db->getDeclaration($field['definition']['type'], $field['name'], $field['definition']);
+            }
+        }
+
+        if (!$query) {
+            return MDB2_OK;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("ALTER TABLE $name $query");
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->queryCol('SHOW DATABASES');
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->queryCol('SELECT DISTINCT USER FROM mysql.USER');
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM mysql.proc";
+        /*
+        SELECT ROUTINE_NAME
+          FROM INFORMATION_SCHEMA.ROUTINES
+         WHERE ROUTINE_TYPE = 'FUNCTION'
+        */
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SHOW TRIGGERS';
+        if (!is_null($table)) {
+            $table = $db->quote($table, 'text');
+            $query .= " LIKE $table";
+        }
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SHOW /*!50002 FULL*/ TABLES";
+        if (!is_null($database)) {
+            $query .= " FROM $database";
+        }
+        $query.= "/*!50002  WHERE Table_type = 'BASE TABLE'*/";
+
+        $table_names = $db->queryAll($query, null, MDB2_FETCHMODE_ORDERED);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+
+        $result = array();
+        foreach ($table_names as $table) {
+            if (!$this->_fixSequenceName($table[0], true)) {
+                $result[] = $table[0];
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SHOW FULL TABLES';
+        if (!is_null($database)) {
+            $query.= " FROM $database";
+        }
+        $query.= " WHERE Table_type = 'VIEW'";
+
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $result = $db->queryCol("SHOW COLUMNS FROM $table");
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ createIndex()
+
+    /**
+     * Get the stucture of a field into an array
+     *
+     * @author Leoncx
+     * @param string    $table         name of the table on which the index is to be created
+     * @param string    $name         name of the index to be created
+     * @param array     $definition        associative array that defines properties of the index to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the index fields as array
+     *                                 indexes. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the index that are specific to
+     *                                 each field.
+     *
+     *                                Currently, only the sorting property is supported. It should be used
+     *                                 to define the sorting direction of the index. It may be set to either
+     *                                 ascending or descending.
+     *
+     *                                Not all DBMS support index sorting direction configuration. The DBMS
+     *                                 drivers of those that do not support it ignore this property. Use the
+     *                                 function supports() to determine whether the DBMS driver can manage indexes.
+     *
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(
+     *                                                'sorting' => 'ascending'
+     *                                                'length' => 10
+     *                                            ),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createIndex($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        $query = "CREATE INDEX $name ON $table";
+        $fields = array();
+        foreach ($definition['fields'] as $field => $fieldinfo) {
+            if (!empty($fieldinfo['length'])) {
+                $fields[] = $db->quoteIdentifier($field, true) . '(' . $fieldinfo['length'] . ')';
+            } else {
+                $fields[] = $db->quoteIdentifier($field, true);
+            }
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string    $table         name of table that should be used in method
+     * @param string    $name         name of the index to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("DROP INDEX $name ON $table");
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'Key_name';
+        $non_unique = 'Non_unique';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $non_unique = strtolower($non_unique);
+            } else {
+                $key_name = strtoupper($key_name);
+                $non_unique = strtoupper($non_unique);
+            }
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW INDEX FROM $table";
+        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index_data) {
+            if ($index_data[$non_unique] && ($index = $this->_fixIndexName($index_data[$key_name]))) {
+                $result[$index] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createConstraint()
+
+    /**
+     * create a constraint on a table
+     *
+     * @param string    $table        name of the table on which the constraint is to be created
+     * @param string    $name         name of the constraint to be created
+     * @param array     $definition   associative array that defines properties of the constraint to be created.
+     *                                Currently, only one property named FIELDS is supported. This property
+     *                                is also an associative with the names of the constraint fields as array
+     *                                constraints. Each entry of this array is set to another type of associative
+     *                                array that specifies properties of the constraint that are specific to
+     *                                each field.
+     *
+     *                                Example
+     *                                   array(
+     *                                       'fields' => array(
+     *                                           'user_name' => array(),
+     *                                           'last_login' => array()
+     *                                       )
+     *                                   )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createConstraint($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $type = '';
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        if (!empty($definition['primary'])) {
+            $type = 'PRIMARY';
+            $name = 'KEY';
+        } elseif (!empty($definition['unique'])) {
+            $type = 'UNIQUE';
+        } elseif (!empty($definition['foreign'])) {
+            $type = 'CONSTRAINT';
+        }
+        if (empty($type)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'invalid definition, could not create constraint', __FUNCTION__);
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "ALTER TABLE $table ADD $type $name";
+        if (!empty($definition['foreign'])) {
+            $query .= ' FOREIGN KEY ';
+        }
+        $fields = array();
+        foreach (array_keys($definition['fields']) as $field) {
+            $fields[] = $db->quoteIdentifier($field, true);
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        if (!empty($definition['foreign'])) {
+            $query.= ' REFERENCES ' . $db->quoteIdentifier($definition['references']['table'], true);
+            $referenced_fields = array();
+            foreach (array_keys($definition['references']['fields']) as $field) {
+                $referenced_fields[] = $db->quoteIdentifier($field, true);
+            }
+            $query .= ' ('. implode(', ', $referenced_fields) . ')';
+            $query .= $this->_getAdvancedFKOptions($definition);
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropConstraint()
+
+    /**
+     * drop existing constraint
+     *
+     * @param string    $table        name of table that should be used in method
+     * @param string    $name         name of the constraint to be dropped
+     * @param string    $primary      hint if the constraint is primary
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropConstraint($table, $name, $primary = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        if ($primary || strtolower($name) == 'primary') {
+            $query = "ALTER TABLE $table DROP PRIMARY KEY";
+        } else {
+            $name = $db->quoteIdentifier($db->getIndexName($name), true);
+            $query = "ALTER TABLE $table DROP INDEX $name";
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'Key_name';
+        $non_unique = 'Non_unique';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $non_unique = strtolower($non_unique);
+            } else {
+                $key_name = strtoupper($key_name);
+                $non_unique = strtoupper($non_unique);
+            }
+        }
+
+        $query = 'SHOW INDEX FROM ' . $db->quoteIdentifier($table, true);
+        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index_data) {
+            if (!$index_data[$non_unique]) {
+                if ($index_data[$key_name] !== 'PRIMARY') {
+                    $index = $this->_fixIndexName($index_data[$key_name]);
+                } else {
+                    $index = 'PRIMARY';
+                }
+                if (!empty($index)) {
+                    $result[$index] = true;
+                }
+            }
+        }
+        
+        //list FOREIGN KEY constraints...
+        $query = 'SHOW CREATE TABLE '. $db->escape($table);
+        $definition = $db->queryOne($query, 'text', 1);
+        if (!PEAR::isError($definition) && !empty($definition)) {
+            $pattern = '/\bCONSTRAINT\s+([^\s]+)\s+FOREIGN KEY\b/i';
+            if (preg_match_all($pattern, str_replace('`', '', $definition), $matches) > 1) {
+                foreach ($matches[1] as $constraint) {
+                    $result[$constraint] = true;
+                }
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string    $seq_name name of the sequence to be created
+     * @param string    $start    start value of the sequence; default is 1
+     * @param array     $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'charset' => 'utf8',
+     *                              'collate' => 'utf8_unicode_ci',
+     *                              'type'    => 'innodb',
+     *                          );
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
+        
+        $options_strings = array();
+
+        if (!empty($options['comment'])) {
+            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
+        }
+
+        if (!empty($options['charset'])) {
+            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
+            if (!empty($options['collate'])) {
+                $options_strings['charset'].= ' COLLATE '.$options['collate'];
+            }
+        }
+
+        $type = false;
+        if (!empty($options['type'])) {
+            $type = $options['type'];
+        } elseif ($db->options['default_table_type']) {
+            $type = $db->options['default_table_type'];
+        }
+        if ($type) {
+            $options_strings[] = "ENGINE = $type";
+        }
+
+        $query = "CREATE TABLE $sequence_name ($seqcol_name INT NOT NULL AUTO_INCREMENT, PRIMARY KEY ($seqcol_name))";
+        if (!empty($options_strings)) {
+            $query .= ' '.implode(' ', $options_strings);
+        }
+        $res = $db->exec($query);
+
+        if (PEAR::isError($res)) {
+            return $res;
+        }
+
+        if ($start == 1) {
+            return MDB2_OK;
+        }
+
+        $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')';
+        $res = $db->exec($query);
+        if (!PEAR::isError($res)) {
+            return MDB2_OK;
+        }
+
+        // Handle error
+        $result = $db->exec("DROP TABLE $sequence_name");
+        if (PEAR::isError($result)) {
+            return $db->raiseError($result, null, null,
+                'could not drop inconsistent sequence table', __FUNCTION__);
+        }
+
+        return $db->raiseError($res, null, null,
+            'could not create sequence table', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string    $seq_name     name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP TABLE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SHOW TABLES";
+        if (!is_null($database)) {
+            $query .= " FROM $database";
+        }
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if ($sqn = $this->_fixSequenceName($table_name, true)) {
+                $result[] = $sqn;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/mysqli.php b/program/lib/MDB2/Driver/Manager/mysqli.php
new file mode 100644
index 0000000..42782fc
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/mysqli.php
@@ -0,0 +1,1067 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysqli.php,v 1.87 2007/12/03 20:59:15 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+/**
+ * MDB2 MySQLi driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Manager_mysqli extends MDB2_Driver_Manager_Common
+{
+
+    // }}}
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset, collation info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name  = $db->quoteIdentifier($name, true);
+        $query = 'CREATE DATABASE ' . $name;
+        if (!empty($options['charset'])) {
+            $query .= ' DEFAULT CHARACTER SET ' . $options['charset'];
+        }
+        if (!empty($options['collation'])) {
+            $query .= ' COLLATE ' . $options['collation'];
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $query = "DROP DATABASE $name";
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['match'])) {
+            $query .= ' MATCH '.$definition['match'];
+        }
+        if (!empty($definition['onupdate'])) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete'])) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     *                       The indexes of the array entries are the names of the fields of the table an
+     *                       the array entry values are associative arrays like those that are meant to be
+     *                       passed with the field definitions to get[Type]Declaration() functions.
+     *                          array(
+     *                              'id' => array(
+     *                                  'type' => 'integer',
+     *                                  'unsigned' => 1
+     *                                  'notnull' => 1
+     *                                  'default' => 0
+     *                              ),
+     *                              'name' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              ),
+     *                              'password' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              )
+     *                          );
+     * @param array $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'charset' => 'utf8',
+     *                              'collate' => 'utf8_unicode_ci',
+     *                              'type'    => 'innodb',
+     *                          );
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = $this->_getCreateTableQuery($name, $fields, $options);
+        if (PEAR::isError($query)) {
+            return $query;
+        }
+
+        $options_strings = array();
+
+        if (!empty($options['comment'])) {
+            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
+        }
+
+        if (!empty($options['charset'])) {
+            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
+            if (!empty($options['collate'])) {
+                $options_strings['charset'].= ' COLLATE '.$options['collate'];
+            }
+        }
+
+        $type = false;
+        if (!empty($options['type'])) {
+            $type = $options['type'];
+        } elseif ($db->options['default_table_type']) {
+            $type = $db->options['default_table_type'];
+        }
+        if ($type) {
+            $options_strings[] = "ENGINE = $type";
+        }
+
+        if (!empty($options_strings)) {
+            $query .= ' '.implode(' ', $options_strings);
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+      * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+            case 'remove':
+            case 'change':
+            case 'rename':
+            case 'name':
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        $query = '';
+        if (!empty($changes['name'])) {
+            $change_name = $db->quoteIdentifier($changes['name'], true);
+            $query .= 'RENAME TO ' . $change_name;
+        }
+
+        if (!empty($changes['add']) && is_array($changes['add'])) {
+            foreach ($changes['add'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $query.= 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
+            }
+        }
+
+        if (!empty($changes['remove']) && is_array($changes['remove'])) {
+            foreach ($changes['remove'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $query.= 'DROP ' . $field_name;
+            }
+        }
+
+        $rename = array();
+        if (!empty($changes['rename']) && is_array($changes['rename'])) {
+            foreach ($changes['rename'] as $field_name => $field) {
+                $rename[$field['name']] = $field_name;
+            }
+        }
+
+        if (!empty($changes['change']) && is_array($changes['change'])) {
+            foreach ($changes['change'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                if (isset($rename[$field_name])) {
+                    $old_field_name = $rename[$field_name];
+                    unset($rename[$field_name]);
+                } else {
+                    $old_field_name = $field_name;
+                }
+                $old_field_name = $db->quoteIdentifier($old_field_name, true);
+                $query.= "CHANGE $old_field_name " . $db->getDeclaration($field['definition']['type'], $field_name, $field['definition']);
+            }
+        }
+
+        if (!empty($rename) && is_array($rename)) {
+            foreach ($rename as $rename_name => $renamed_field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field = $changes['rename'][$renamed_field];
+                $renamed_field = $db->quoteIdentifier($renamed_field, true);
+                $query.= 'CHANGE ' . $renamed_field . ' ' . $db->getDeclaration($field['definition']['type'], $field['name'], $field['definition']);
+            }
+        }
+
+        if (!$query) {
+            return MDB2_OK;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("ALTER TABLE $name $query");
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->queryCol('SHOW DATABASES');
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->queryCol('SELECT DISTINCT USER FROM mysql.USER');
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM mysql.proc";
+        /*
+        SELECT ROUTINE_NAME
+          FROM INFORMATION_SCHEMA.ROUTINES
+         WHERE ROUTINE_TYPE = 'FUNCTION'
+        */
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SHOW TRIGGERS';
+        if (!is_null($table)) {
+            $table = $db->quote($table, 'text');
+            $query .= " LIKE $table";
+        }
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SHOW /*!50002 FULL*/ TABLES";
+        if (!is_null($database)) {
+            $query .= " FROM $database";
+        }
+        $query.= "/*!50002  WHERE Table_type = 'BASE TABLE'*/";
+
+        $table_names = $db->queryAll($query, null, MDB2_FETCHMODE_ORDERED);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+
+        $result = array();
+        foreach ($table_names as $table) {
+            if (!$this->_fixSequenceName($table[0], true)) {
+                $result[] = $table[0];
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SHOW FULL TABLES';
+        if (!is_null($database)) {
+            $query.= " FROM $database";
+        }
+        $query.= " WHERE Table_type = 'VIEW'";
+
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $result = $db->queryCol("SHOW COLUMNS FROM $table");
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ createIndex()
+
+    /**
+     * Get the stucture of a field into an array
+     *
+     * @author Leoncx
+     * @param string    $table         name of the table on which the index is to be created
+     * @param string    $name         name of the index to be created
+     * @param array     $definition        associative array that defines properties of the index to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the index fields as array
+     *                                 indexes. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the index that are specific to
+     *                                 each field.
+     *
+     *                                Currently, only the sorting property is supported. It should be used
+     *                                 to define the sorting direction of the index. It may be set to either
+     *                                 ascending or descending.
+     *
+     *                                Not all DBMS support index sorting direction configuration. The DBMS
+     *                                 drivers of those that do not support it ignore this property. Use the
+     *                                 function supports() to determine whether the DBMS driver can manage indexes.
+     *
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(
+     *                                                'sorting' => 'ascending'
+     *                                                'length' => 10
+     *                                            ),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createIndex($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        $query = "CREATE INDEX $name ON $table";
+        $fields = array();
+        foreach ($definition['fields'] as $field => $fieldinfo) {
+            if (!empty($fieldinfo['length'])) {
+                $fields[] = $db->quoteIdentifier($field, true) . '(' . $fieldinfo['length'] . ')';
+            } else {
+                $fields[] = $db->quoteIdentifier($field, true);
+            }
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string    $table         name of table that should be used in method
+     * @param string    $name         name of the index to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("DROP INDEX $name ON $table");
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'Key_name';
+        $non_unique = 'Non_unique';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $non_unique = strtolower($non_unique);
+            } else {
+                $key_name = strtoupper($key_name);
+                $non_unique = strtoupper($non_unique);
+            }
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW INDEX FROM $table";
+        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index_data) {
+            if ($index_data[$non_unique] && ($index = $this->_fixIndexName($index_data[$key_name]))) {
+                $result[$index] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createConstraint()
+
+    /**
+     * create a constraint on a table
+     *
+     * @param string    $table         name of the table on which the constraint is to be created
+     * @param string    $name         name of the constraint to be created
+     * @param array     $definition        associative array that defines properties of the constraint to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the constraint fields as array
+     *                                 constraints. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the constraint that are specific to
+     *                                 each field.
+     *
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createConstraint($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $type = '';
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        if (!empty($definition['primary'])) {
+            $type = 'PRIMARY';
+            $name = 'KEY';
+        } elseif (!empty($definition['unique'])) {
+            $type = 'UNIQUE';
+        } elseif (!empty($definition['foreign'])) {
+            $type = 'CONSTRAINT';
+        }
+        if (empty($type)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'invalid definition, could not create constraint', __FUNCTION__);
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "ALTER TABLE $table ADD $type $name";
+        if (!empty($definition['foreign'])) {
+            $query .= ' FOREIGN KEY ';
+        }
+        $fields = array();
+        foreach (array_keys($definition['fields']) as $field) {
+            $fields[] = $db->quoteIdentifier($field, true);
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        if (!empty($definition['foreign'])) {
+            $query.= ' REFERENCES ' . $db->quoteIdentifier($definition['references']['table'], true);
+            $referenced_fields = array();
+            foreach (array_keys($definition['references']['fields']) as $field) {
+                $referenced_fields[] = $db->quoteIdentifier($field, true);
+            }
+            $query .= ' ('. implode(', ', $referenced_fields) . ')';
+            $query .= $this->_getAdvancedFKOptions($definition);
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropConstraint()
+
+    /**
+     * drop existing constraint
+     *
+     * @param string    $table        name of table that should be used in method
+     * @param string    $name         name of the constraint to be dropped
+     * @param string    $primary      hint if the constraint is primary
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropConstraint($table, $name, $primary = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        if ($primary || strtolower($name) == 'primary') {
+            $query = "ALTER TABLE $table DROP PRIMARY KEY";
+        } else {
+            $name = $db->quoteIdentifier($db->getIndexName($name), true);
+            $query = "ALTER TABLE $table DROP INDEX $name";
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'Key_name';
+        $non_unique = 'Non_unique';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $non_unique = strtolower($non_unique);
+            } else {
+                $key_name = strtoupper($key_name);
+                $non_unique = strtoupper($non_unique);
+            }
+        }
+
+        $query = 'SHOW INDEX FROM ' . $db->quoteIdentifier($table, true);
+        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index_data) {
+            if (!$index_data[$non_unique]) {
+                if ($index_data[$key_name] !== 'PRIMARY') {
+                    $index = $this->_fixIndexName($index_data[$key_name]);
+                } else {
+                    $index = 'PRIMARY';
+                }
+                if (!empty($index)) {
+                    $result[$index] = true;
+                }
+            }
+        }
+
+        //list FOREIGN KEY constraints...
+        $query = 'SHOW CREATE TABLE '. $db->escape($table);
+        $definition = $db->queryOne($query, 'text', 1);
+        if (!PEAR::isError($definition) && !empty($definition)) {
+            $pattern = '/\bCONSTRAINT\s+([^\s]+)\s+FOREIGN KEY\b/i';
+            if (preg_match_all($pattern, str_replace('`', '', $definition), $matches) > 1) {
+                foreach ($matches[1] as $constraint) {
+                    $result[$constraint] = true;
+                }
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string    $seq_name name of the sequence to be created
+     * @param string    $start    start value of the sequence; default is 1
+     * @param array     $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'charset' => 'utf8',
+     *                              'collate' => 'utf8_unicode_ci',
+     *                              'type'    => 'innodb',
+     *                          );
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
+        
+        $options_strings = array();
+
+        if (!empty($options['comment'])) {
+            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
+        }
+
+        if (!empty($options['charset'])) {
+            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
+            if (!empty($options['collate'])) {
+                $options_strings['charset'].= ' COLLATE '.$options['collate'];
+            }
+        }
+
+        $type = false;
+        if (!empty($options['type'])) {
+            $type = $options['type'];
+        } elseif ($db->options['default_table_type']) {
+            $type = $db->options['default_table_type'];
+        }
+        if ($type) {
+            $options_strings[] = "ENGINE = $type";
+        }
+
+        if (!empty($options_strings)) {
+            $query.= ' '.implode(' ', $options_strings);
+        }
+
+        $query = "CREATE TABLE $sequence_name ($seqcol_name INT NOT NULL AUTO_INCREMENT, PRIMARY KEY ($seqcol_name))";
+        if (!empty($options_strings)) {
+            $query .= ' '.implode(' ', $options_strings);
+        }
+        $res = $db->exec($query);
+        if (PEAR::isError($res)) {
+            return $res;
+        }
+
+        if ($start == 1) {
+            return MDB2_OK;
+        }
+
+        $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')';
+        $res = $db->exec($query);
+        if (!PEAR::isError($res)) {
+            return MDB2_OK;
+        }
+
+        // Handle error
+        $result = $db->exec("DROP TABLE $sequence_name");
+        if (PEAR::isError($result)) {
+            return $db->raiseError($result, null, null,
+                'could not drop inconsistent sequence table', __FUNCTION__);
+        }
+
+        return $db->raiseError($res, null, null,
+            'could not create sequence table', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string    $seq_name     name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP TABLE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SHOW TABLES";
+        if (!is_null($database)) {
+            $query .= " FROM $database";
+        }
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if ($sqn = $this->_fixSequenceName($table_name, true)) {
+                $result[] = $sqn;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/pgsql.php b/program/lib/MDB2/Driver/Manager/pgsql.php
new file mode 100644
index 0000000..d5ebbc8
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/pgsql.php
@@ -0,0 +1,765 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Paul Cooper <pgc@ucecom.com>                                 |
+// +----------------------------------------------------------------------+
+//
+// $Id: pgsql.php,v 1.74 2007/12/03 20:59:15 quipo Exp $
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+/**
+ * MDB2 MySQL driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Driver_Manager_pgsql extends MDB2_Driver_Manager_Common
+{
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name  = $db->quoteIdentifier($name, true);
+        $query = 'CREATE DATABASE ' . $name;
+        if (!empty($options['charset'])) {
+            $query .= ' WITH ENCODING ' . $db->quote($options['charset'], 'text');
+        }
+        return $db->standaloneQuery($query, null, true);
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->standaloneQuery("DROP DATABASE $name", null, true);
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['match'])) {
+            $query .= ' MATCH '.$definition['match'];
+        }
+        if (!empty($definition['onupdate'])) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete'])) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        if (!empty($definition['deferrable'])) {
+            $query .= ' DEFERRABLE';
+        } else {
+            $query .= ' NOT DEFERRABLE';
+        }
+        if (!empty($definition['initiallydeferred'])) {
+            $query .= ' INITIALLY DEFERRED';
+        } else {
+            $query .= ' INITIALLY IMMEDIATE';
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+            case 'remove':
+            case 'change':
+            case 'name':
+            case 'rename':
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'\" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        if (!empty($changes['add']) && is_array($changes['add'])) {
+            foreach ($changes['add'] as $field_name => $field) {
+                $query = 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
+                $result = $db->exec("ALTER TABLE $name $query");
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+
+        if (!empty($changes['remove']) && is_array($changes['remove'])) {
+            foreach ($changes['remove'] as $field_name => $field) {
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $query = 'DROP ' . $field_name;
+                $result = $db->exec("ALTER TABLE $name $query");
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+
+        if (!empty($changes['change']) && is_array($changes['change'])) {
+            foreach ($changes['change'] as $field_name => $field) {
+                $field_name = $db->quoteIdentifier($field_name, true);
+                if (!empty($field['definition']['type'])) {
+                    $server_info = $db->getServerVersion();
+                    if (PEAR::isError($server_info)) {
+                        return $server_info;
+                    }
+                    if (is_array($server_info) && $server_info['major'] < 8) {
+                        return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                            'changing column type for "'.$change_name.'\" requires PostgreSQL 8.0 or above', __FUNCTION__);
+                    }
+                    $db->loadModule('Datatype', null, true);
+                    $query = "ALTER $field_name TYPE ".$db->datatype->getTypeDeclaration($field['definition']);
+                    $result = $db->exec("ALTER TABLE $name $query");
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+                if (array_key_exists('default', $field['definition'])) {
+                    $query = "ALTER $field_name SET DEFAULT ".$db->quote($field['definition']['default'], $field['definition']['type']);
+                    $result = $db->exec("ALTER TABLE $name $query");
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+                if (!empty($field['definition']['notnull'])) {
+                    $query = "ALTER $field_name ".($field['definition']['notnull'] ? 'SET' : 'DROP').' NOT NULL';
+                    $result = $db->exec("ALTER TABLE $name $query");
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+            }
+        }
+
+        if (!empty($changes['rename']) && is_array($changes['rename'])) {
+            foreach ($changes['rename'] as $field_name => $field) {
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $result = $db->exec("ALTER TABLE $name RENAME COLUMN $field_name TO ".$db->quoteIdentifier($field['name'], true));
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        if (!empty($changes['name'])) {
+            $change_name = $db->quoteIdentifier($changes['name'], true);
+            $result = $db->exec("ALTER TABLE $name RENAME TO ".$change_name);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT datname FROM pg_database';
+        $result2 = $db->standaloneQuery($query, array('text'), false);
+        if (!MDB2::isResultCommon($result2)) {
+            return $result2;
+        }
+
+        $result = $result2->fetchCol();
+        $result2->free();
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT usename FROM pg_user';
+        $result2 = $db->standaloneQuery($query, array('text'), false);
+        if (!MDB2::isResultCommon($result2)) {
+            return $result2;
+        }
+
+        $result = $result2->fetchCol();
+        $result2->free();
+        return $result;
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT viewname
+                    FROM pg_views
+                   WHERE schemaname NOT IN ('pg_catalog', 'information_schema')
+                     AND viewname !~ '^pg_'";
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableViews()
+
+    /**
+     * list the views in the database that reference a given table
+     *
+     * @param string table for which all referenced views should be found
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableViews($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT viewname FROM pg_views NATURAL JOIN pg_tables';
+        $query.= ' WHERE tablename ='.$db->quote($table, 'text');
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "
+            SELECT
+                proname
+            FROM
+                pg_proc pr,
+                pg_type tp
+            WHERE
+                tp.oid = pr.prorettype
+                AND pr.proisagg = FALSE
+                AND tp.typname <> 'trigger'
+                AND pr.pronamespace IN
+                    (SELECT oid FROM pg_namespace WHERE nspname NOT LIKE 'pg_%' AND nspname != 'information_schema')";
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT trg.tgname AS trigger_name
+                    FROM pg_trigger trg,
+                         pg_class tbl
+                   WHERE trg.tgrelid = tbl.oid';
+        if (!is_null($table)) {
+            $table = $db->quote(strtoupper($table), 'text');
+            $query .= " AND tbl.relname = $table";
+        }
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        // gratuitously stolen from PEAR DB _getSpecialQuery in pgsql.php
+        $query = 'SELECT c.relname AS "Name"'
+            . ' FROM pg_class c, pg_user u'
+            . ' WHERE c.relowner = u.usesysid'
+            . " AND c.relkind = 'r'"
+            . ' AND NOT EXISTS'
+            . ' (SELECT 1 FROM pg_views'
+            . '  WHERE viewname = c.relname)'
+            . " AND c.relname !~ '^(pg_|sql_)'"
+            . ' UNION'
+            . ' SELECT c.relname AS "Name"'
+            . ' FROM pg_class c'
+            . " WHERE c.relkind = 'r'"
+            . ' AND NOT EXISTS'
+            . ' (SELECT 1 FROM pg_views'
+            . '  WHERE viewname = c.relname)'
+            . ' AND NOT EXISTS'
+            . ' (SELECT 1 FROM pg_user'
+            . '  WHERE usesysid = c.relowner)'
+            . " AND c.relname !~ '^pg_'";
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $db->setLimit(1);
+        $result2 = $db->query("SELECT * FROM $table");
+        if (PEAR::isError($result2)) {
+            return $result2;
+        }
+        $result = $result2->getColumnNames();
+        $result2->free();
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return array_flip($result);
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $subquery = "SELECT indexrelid FROM pg_index, pg_class";
+        $subquery.= " WHERE pg_class.relname=$table AND pg_class.oid=pg_index.indrelid AND indisunique != 't' AND indisprimary != 't'";
+        $query = "SELECT relname FROM pg_class WHERE oid IN ($subquery)";
+        $indexes = $db->queryCol($query, 'text');
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index) {
+            $index = $this->_fixIndexName($index);
+            if (!empty($index)) {
+                $result[$index] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $subquery = "SELECT indexrelid FROM pg_index, pg_class";
+        $subquery.= " WHERE pg_class.relname=$table AND pg_class.oid=pg_index.indrelid AND (indisunique = 't' OR indisprimary = 't')";
+        $query = "SELECT relname FROM pg_class WHERE oid IN ($subquery)";
+        $constraints = $db->queryCol($query);
+        if (PEAR::isError($constraints)) {
+            return $constraints;
+        }
+
+        $result = array();
+        foreach ($constraints as $constraint) {
+            $constraint = $this->_fixIndexName($constraint);
+            if (!empty($constraint)) {
+                $result[$constraint] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+            && $db->options['field_case'] == CASE_LOWER
+        ) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string $seq_name name of the sequence to be created
+     * @param string $start start value of the sequence; default is 1
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("CREATE SEQUENCE $sequence_name INCREMENT 1".
+            ($start < 1 ? " MINVALUE $start" : '')." START $start");
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string $seq_name name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP SEQUENCE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT relname FROM pg_class WHERE relkind = 'S' AND relnamespace IN";
+        $query.= "(SELECT oid FROM pg_namespace WHERE nspname NOT LIKE 'pg_%' AND nspname != 'information_schema')";
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            $result[] = $this->_fixSequenceName($table_name);
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/sqlite.php b/program/lib/MDB2/Driver/Manager/sqlite.php
new file mode 100644
index 0000000..f126ff1
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/sqlite.php
@@ -0,0 +1,1325 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith, Lorenzo Alberton                       |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Authors: Lukas Smith <smith@pooteeweet.org>                          |
+// |          Lorenzo Alberton <l.alberton@quipo.it>                      |
+// +----------------------------------------------------------------------+
+//
+// $Id: sqlite.php,v 1.72 2007/12/03 20:59:15 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+/**
+ * MDB2 SQLite driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ * @author  Lorenzo Alberton <l.alberton@quipo.it>
+ */
+class MDB2_Driver_Manager_sqlite extends MDB2_Driver_Manager_Common
+{
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $database_file = $db->_getDatabaseFile($name);
+        if (file_exists($database_file)) {
+            return $db->raiseError(MDB2_ERROR_ALREADY_EXISTS, null, null,
+                'database already exists', __FUNCTION__);
+        }
+        $php_errormsg = '';
+        $handle = @sqlite_open($database_file, $db->dsn['mode'], $php_errormsg);
+        if (!$handle) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                (isset($php_errormsg) ? $php_errormsg : 'could not create the database file'), __FUNCTION__);
+        }
+        if (!empty($options['charset'])) {
+            $query = 'PRAGMA encoding = ' . $db->quote($options['charset'], 'text');
+            @sqlite_query($query, $handle);
+        }
+        @sqlite_close($handle);
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $database_file = $db->_getDatabaseFile($name);
+        if (!@file_exists($database_file)) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_DROP, null, null,
+                'database does not exist', __FUNCTION__);
+        }
+        $result = @unlink($database_file);
+        if (!$result) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_DROP, null, null,
+                (isset($php_errormsg) ? $php_errormsg : 'could not remove the database file'), __FUNCTION__);
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['match'])) {
+            $query .= ' MATCH '.$definition['match'];
+        }
+        if (!empty($definition['onupdate']) && (strtoupper($definition['onupdate']) != 'NO ACTION')) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete']) && (strtoupper($definition['ondelete']) != 'NO ACTION')) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        if (!empty($definition['deferrable'])) {
+            $query .= ' DEFERRABLE';
+        } else {
+            $query .= ' NOT DEFERRABLE';
+        }
+        if (!empty($definition['initiallydeferred'])) {
+            $query .= ' INITIALLY DEFERRED';
+        } else {
+            $query .= ' INITIALLY IMMEDIATE';
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ _getCreateTableQuery()
+
+    /**
+     * Create a basic SQL query for a new table creation
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     * @param array $options  An associative array of table options
+     * @return mixed string (the SQL query) on success, a MDB2 error on failure
+     * @see createTable()
+     */
+    function _getCreateTableQuery($name, $fields, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!$name) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                'no valid table name specified', __FUNCTION__);
+        }
+        if (empty($fields)) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                'no fields specified for table "'.$name.'"', __FUNCTION__);
+        }
+        $query_fields = $this->getFieldDeclarationList($fields);
+        if (PEAR::isError($query_fields)) {
+            return $query_fields;
+        }
+        if (!empty($options['primary'])) {
+            $query_fields.= ', PRIMARY KEY ('.implode(', ', array_keys($options['primary'])).')';
+        }
+        if (!empty($options['foreign_keys'])) {
+            foreach ($options['foreign_keys'] as $fkname => $fkdef) {
+                if (empty($fkdef)) {
+                    continue;
+                }
+                $query_fields.= ', CONSTRAINT '.$fkname.' FOREIGN KEY ('.implode(', ', array_keys($fkdef['fields'])).')';
+                $query_fields.= ' REFERENCES '.$fkdef['references']['table'].' ('.implode(', ', array_keys($fkdef['references']['fields'])).')';
+                $query_fields.= $this->_getAdvancedFKOptions($fkdef);
+            }
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $result = 'CREATE ';
+        if (!empty($options['temporary'])) {
+            $result .= $this->_getTemporaryTableQuery();
+        }
+        $result .= " TABLE $name ($query_fields)";
+        return $result;
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     * @param array $options  An associative array of table options
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        $result = parent::createTable($name, $fields, $options);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        // create triggers to enforce FOREIGN KEY constraints
+        if (!empty($options['foreign_keys'])) {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            foreach ($options['foreign_keys'] as $fkname => $fkdef) {
+                if (empty($fkdef)) {
+                    continue;
+                }
+                //set actions to 'RESTRICT' if not set
+                $fkdef['onupdate'] = empty($fkdef['onupdate']) ? 'RESTRICT' : strtoupper($fkdef['onupdate']);
+                $fkdef['ondelete'] = empty($fkdef['ondelete']) ? 'RESTRICT' : strtoupper($fkdef['ondelete']);
+
+                $trigger_names = array(
+                    'insert'    => $fkname.'_insert_trg',
+                    'update'    => $fkname.'_update_trg',
+                    'pk_update' => $fkname.'_pk_update_trg',
+                    'pk_delete' => $fkname.'_pk_delete_trg',
+                );
+                
+                //create the [insert|update] triggers on the FK table
+                $table_fields = array_keys($fkdef['fields']);
+                $referenced_fields = array_keys($fkdef['references']['fields']);
+                $query = 'CREATE TRIGGER %s BEFORE %s ON '.$name
+                        .' FOR EACH ROW BEGIN'
+                        .' SELECT RAISE(ROLLBACK, \'%s on table "'.$name.'" violates FOREIGN KEY constraint "'.$fkname.'"\')'
+                        .' WHERE  (SELECT ';
+                $aliased_fields = array();
+                foreach ($referenced_fields as $field) {
+                    $aliased_fields[] = $fkdef['references']['table'] .'.'.$field .' AS '.$field;
+                }
+                $query .= implode(',', $aliased_fields)
+                       .' FROM '.$fkdef['references']['table']
+                       .' WHERE ';
+                $conditions = array();
+                for ($i=0; $i<count($table_fields); $i++) {
+                    $conditions[] = $referenced_fields[$i] .' = NEW.'.$table_fields[$i];
+                }
+                $query .= implode(' AND ', $conditions).') IS NULL; END;';
+                $result = $db->exec(sprintf($query, $trigger_names['insert'], 'INSERT', 'insert'));
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+
+                $result = $db->exec(sprintf($query, $trigger_names['update'], 'UPDATE', 'update'));
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+                
+                //create the ON [UPDATE|DELETE] triggers on the primary table
+                $restrict_action = 'SELECT RAISE(ROLLBACK, \'%s on table "'.$name.'" violates FOREIGN KEY constraint "'.$fkname.'"\')'
+                                  .' WHERE  (SELECT ';
+                $aliased_fields = array();
+                foreach ($table_fields as $field) {
+                    $aliased_fields[] = $name .'.'.$field .' AS '.$field;
+                }
+                $restrict_action .= implode(',', $aliased_fields)
+                       .' FROM '.$name
+                       .' WHERE ';
+                $conditions  = array();
+                $new_values  = array();
+                $null_values = array();
+                for ($i=0; $i<count($table_fields); $i++) {
+                    $conditions[]  = $table_fields[$i] .' = OLD.'.$referenced_fields[$i];
+                    $new_values[]  = $table_fields[$i] .' = NEW.'.$referenced_fields[$i];
+                    $null_values[] = $table_fields[$i] .' = NULL';
+                }
+                $restrict_action .= implode(' AND ', $conditions).') IS NOT NULL';
+
+                $cascade_action_update = 'UPDATE '.$name.' SET '.implode(', ', $new_values) .' WHERE '.implode(' AND ', $conditions);
+                $cascade_action_delete = 'DELETE FROM '.$name.' WHERE '.implode(' AND ', $conditions);
+                $setnull_action        = 'UPDATE '.$name.' SET '.implode(', ', $null_values).' WHERE '.implode(' AND ', $conditions);
+
+                if ('SET DEFAULT' == $fkdef['onupdate'] || 'SET DEFAULT' == $fkdef['ondelete']) {
+                    $db->loadModule('Reverse', null, true);
+                    $default_values = array();
+                    foreach ($table_fields as $table_field) {
+                        $field_definition = $db->reverse->getTableFieldDefinition($name, $field);
+                        if (PEAR::isError($field_definition)) {
+                            return $field_definition;
+                        }
+                        $default_values[] = $table_field .' = '. $field_definition[0]['default'];
+                    }
+                    $setdefault_action = 'UPDATE '.$name.' SET '.implode(', ', $default_values).' WHERE '.implode(' AND ', $conditions);
+                }
+
+                $query = 'CREATE TRIGGER %s'
+                        .' %s ON '.$fkdef['references']['table']
+                        .' FOR EACH ROW BEGIN ';
+
+                if ('CASCADE' == $fkdef['onupdate']) {
+                    $sql_update = sprintf($query, $trigger_names['pk_update'], 'AFTER UPDATE',  'update') . $cascade_action_update. '; END;';
+                } elseif ('SET NULL' == $fkdef['onupdate']) {
+                    $sql_update = sprintf($query, $trigger_names['pk_update'], 'BEFORE UPDATE', 'update') . $setnull_action. '; END;';
+                } elseif ('SET DEFAULT' == $fkdef['onupdate']) {
+                    $sql_update = sprintf($query, $trigger_names['pk_update'], 'BEFORE UPDATE', 'update') . $setdefault_action. '; END;';
+                } elseif ('NO ACTION' == $fkdef['onupdate']) {
+                    $sql_update = sprintf($query.$restrict_action, $trigger_names['pk_update'], 'AFTER UPDATE', 'update') . '; END;';
+                } else {
+                    //'RESTRICT'
+                    $sql_update = sprintf($query.$restrict_action, $trigger_names['pk_update'], 'BEFORE UPDATE', 'update') . '; END;';
+                }
+                if ('CASCADE' == $fkdef['ondelete']) {
+                    $sql_delete = sprintf($query, $trigger_names['pk_delete'], 'AFTER DELETE',  'delete') . $cascade_action_delete. '; END;';
+                } elseif ('SET NULL' == $fkdef['ondelete']) {
+                    $sql_delete = sprintf($query, $trigger_names['pk_delete'], 'BEFORE DELETE', 'delete') . $setnull_action. '; END;';
+                } elseif ('SET DEFAULT' == $fkdef['ondelete']) {
+                    $sql_delete = sprintf($query, $trigger_names['pk_delete'], 'BEFORE DELETE', 'delete') . $setdefault_action. '; END;';
+                } elseif ('NO ACTION' == $fkdef['ondelete']) {
+                    $sql_delete = sprintf($query.$restrict_action, $trigger_names['pk_delete'], 'AFTER DELETE', 'delete')  . '; END;';
+                } else {
+                    //'RESTRICT'
+                    $sql_delete = sprintf($query.$restrict_action, $trigger_names['pk_delete'], 'BEFORE DELETE', 'delete') . '; END;';
+                }
+
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+                $result = $db->exec($sql_delete);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+                $result = $db->exec($sql_update);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropTable()
+
+    /**
+     * drop an existing table
+     *
+     * @param string $name name of the table that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropTable($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        
+        //delete the triggers associated to existing FK constraints
+        $constraints = $this->listTableConstraints($name);
+        if (!PEAR::isError($constraints) && !empty($constraints)) {
+            $db->loadModule('Reverse', null, true);
+            foreach ($constraints as $constraint) {
+                $definition = $db->reverse->getTableConstraintDefinition($name, $constraint);
+                if (!PEAR::isError($definition) && !empty($definition['foreign'])) {
+                    $result = $this->_dropFKTriggers($name, $constraint, $definition['references']['table']);
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+            }
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("DROP TABLE $name");
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+      * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+            case 'remove':
+            case 'change':
+            case 'name':
+            case 'rename':
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        $db->loadModule('Reverse', null, true);
+
+        // actually sqlite 2.x supports no ALTER TABLE at all .. so we emulate it
+        $fields = $db->manager->listTableFields($name);
+        if (PEAR::isError($fields)) {
+            return $fields;
+        }
+
+        $fields = array_flip($fields);
+        foreach ($fields as $field => $value) {
+            $definition = $db->reverse->getTableFieldDefinition($name, $field);
+            if (PEAR::isError($definition)) {
+                return $definition;
+            }
+            $fields[$field] = $definition[0];
+        }
+
+        $indexes = $db->manager->listTableIndexes($name);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $indexes = array_flip($indexes);
+        foreach ($indexes as $index => $value) {
+            $definition = $db->reverse->getTableIndexDefinition($name, $index);
+            if (PEAR::isError($definition)) {
+                return $definition;
+            }
+            $indexes[$index] = $definition;
+        }
+
+        $constraints = $db->manager->listTableConstraints($name);
+        if (PEAR::isError($constraints)) {
+            return $constraints;
+        }
+
+        if (!array_key_exists('foreign_keys', $options)) {
+            $options['foreign_keys'] = array();
+        }
+        $constraints = array_flip($constraints);
+        foreach ($constraints as $constraint => $value) {
+            if (!empty($definition['primary'])) {
+                if (!array_key_exists('primary', $options)) {
+                    $options['primary'] = $definition['fields'];
+                    //remove from the $constraint array, it's already handled by createTable()
+                    unset($constraints[$constraint]);
+                }
+            } else {
+                $c_definition = $db->reverse->getTableConstraintDefinition($name, $constraint);
+                if (PEAR::isError($c_definition)) {
+                    return $c_definition;
+                }
+                if (!empty($c_definition['foreign'])) {
+                    if (!array_key_exists($constraint, $options['foreign_keys'])) {
+                        $options['foreign_keys'][$constraint] = $c_definition;
+                    }
+                    //remove from the $constraint array, it's already handled by createTable()
+                    unset($constraints[$constraint]);
+                } else {
+                    $constraints[$constraint] = $c_definition;
+                }
+            }
+        }
+
+        $name_new = $name;
+        $create_order = $select_fields = array_keys($fields);
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+                foreach ($change as $field_name => $field) {
+                    $fields[$field_name] = $field;
+                    $create_order[] = $field_name;
+                }
+                break;
+            case 'remove':
+                foreach ($change as $field_name => $field) {
+                    unset($fields[$field_name]);
+                    $select_fields = array_diff($select_fields, array($field_name));
+                    $create_order = array_diff($create_order, array($field_name));
+                }
+                break;
+            case 'change':
+                foreach ($change as $field_name => $field) {
+                    $fields[$field_name] = $field['definition'];
+                }
+                break;
+            case 'name':
+                $name_new = $change;
+                break;
+            case 'rename':
+                foreach ($change as $field_name => $field) {
+                    unset($fields[$field_name]);
+                    $fields[$field['name']] = $field['definition'];
+                    $create_order[array_search($field_name, $create_order)] = $field['name'];
+                }
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        $data = null;
+        if (!empty($select_fields)) {
+            $query = 'SELECT '.implode(', ', $select_fields).' FROM '.$db->quoteIdentifier($name, true);
+            $data = $db->queryAll($query, null, MDB2_FETCHMODE_ORDERED);
+        }
+
+        $result = $this->dropTable($name);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        $result = $this->createTable($name_new, $fields, $options);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        foreach ($indexes as $index => $definition) {
+            $this->createIndex($name_new, $index, $definition);
+        }
+
+        foreach ($constraints as $constraint => $definition) {
+            $this->createConstraint($name_new, $constraint, $definition);
+        }
+
+        if (!empty($select_fields) && !empty($data)) {
+            $query = 'INSERT INTO '.$db->quoteIdentifier($name_new, true);
+            $query.= '('.implode(', ', array_slice(array_keys($fields), 0, count($select_fields))).')';
+            $query.=' VALUES (?'.str_repeat(', ?', (count($select_fields) - 1)).')';
+            $stmt =& $db->prepare($query, null, MDB2_PREPARE_MANIP);
+            if (PEAR::isError($stmt)) {
+                return $stmt;
+            }
+            foreach ($data as $row) {
+                $result = $stmt->execute($row);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'list databases is not supported', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'list databases is not supported', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sqlite_master WHERE type='view' AND sql NOT NULL";
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableViews()
+
+    /**
+     * list the views in the database that reference a given table
+     *
+     * @param string table for which all referenced views should be found
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableViews($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name, sql FROM sqlite_master WHERE type='view' AND sql NOT NULL";
+        $views = $db->queryAll($query, array('text', 'text'), MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($views)) {
+            return $views;
+        }
+        $result = array();
+        foreach ($views as $row) {
+            if (preg_match("/^create view .* \bfrom\b\s+\b{$table}\b /i", $row['sql'])) {
+                if (!empty($row['name'])) {
+                    $result[$row['name']] = true;
+                }
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sqlite_master WHERE type='table' AND sql NOT NULL ORDER BY name";
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if (!$this->_fixSequenceName($table_name, true)) {
+                $result[] = $table_name;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->loadModule('Reverse', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(name)='.$db->quote(strtolower($table), 'text');
+        } else {
+            $query.= 'name='.$db->quote($table, 'text');
+        }
+        $sql = $db->queryOne($query);
+        if (PEAR::isError($sql)) {
+            return $sql;
+        }
+        $columns = $db->reverse->_getTableColumns($sql);
+        $fields = array();
+        foreach ($columns as $column) {
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $column['name'] = strtolower($column['name']);
+                } else {
+                    $column['name'] = strtoupper($column['name']);
+                }
+            } else {
+                $column = array_change_key_case($column, $db->options['field_case']);
+            }
+            $fields[] = $column['name'];
+        }
+        return $fields;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sqlite_master WHERE type='trigger' AND sql NOT NULL";
+        if (!is_null($table)) {
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                $query.= ' AND LOWER(tbl_name)='.$db->quote(strtolower($table), 'text');
+            } else {
+                $query.= ' AND tbl_name='.$db->quote($table, 'text');
+            }
+        }
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ createIndex()
+
+    /**
+     * Get the stucture of a field into an array
+     *
+     * @param string    $table         name of the table on which the index is to be created
+     * @param string    $name         name of the index to be created
+     * @param array     $definition        associative array that defines properties of the index to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the index fields as array
+     *                                 indexes. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the index that are specific to
+     *                                 each field.
+     *
+     *                                Currently, only the sorting property is supported. It should be used
+     *                                 to define the sorting direction of the index. It may be set to either
+     *                                 ascending or descending.
+     *
+     *                                Not all DBMS support index sorting direction configuration. The DBMS
+     *                                 drivers of those that do not support it ignore this property. Use the
+     *                                 function support() to determine whether the DBMS driver can manage indexes.
+
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(
+     *                                                'sorting' => 'ascending'
+     *                                            ),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createIndex($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name  = $db->getIndexName($name);
+        $query = "CREATE INDEX $name ON $table";
+        $fields = array();
+        foreach ($definition['fields'] as $field_name => $field) {
+            $field_string = $field_name;
+            if (!empty($field['sorting'])) {
+                switch ($field['sorting']) {
+                case 'ascending':
+                    $field_string.= ' ASC';
+                    break;
+                case 'descending':
+                    $field_string.= ' DESC';
+                    break;
+                }
+            }
+            $fields[] = $field_string;
+        }
+        $query .= ' ('.implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string    $table         name of table that should be used in method
+     * @param string    $name         name of the index to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->getIndexName($name);
+        return $db->exec("DROP INDEX $name");
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(tbl_name)='.strtolower($table);
+        } else {
+            $query.= "tbl_name=$table";
+        }
+        $query.= " AND sql NOT NULL ORDER BY name";
+        $indexes = $db->queryCol($query, 'text');
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $sql) {
+            if (preg_match("/^create index ([^ ]+) on /i", $sql, $tmp)) {
+                $index = $this->_fixIndexName($tmp[1]);
+                if (!empty($index)) {
+                    $result[$index] = true;
+                }
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createConstraint()
+
+    /**
+     * create a constraint on a table
+     *
+     * @param string $table      name of the table on which the constraint is to be created
+     * @param string $name       name of the constraint to be created
+     * @param array  $definition associative array that defines properties of the constraint to be created.
+     *                           Currently, only one property named FIELDS is supported. This property
+     *                           is also an associative with the names of the constraint fields as array
+     *                           constraints. Each entry of this array is set to another type of associative
+     *                           array that specifies properties of the constraint that are specific to
+     *                           each field.
+     *
+     *                           Example
+     *                              array(
+     *                                  'fields' => array(
+     *                                      'user_name' => array(),
+     *                                      'last_login' => array()
+     *                                  )
+     *                              )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createConstraint($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!empty($definition['primary'])) {
+            return $db->manager->alterTable($table, array(), false, array('primary' => $definition['fields']));
+        }
+        
+        if (!empty($definition['foreign'])) {
+            return $db->manager->alterTable($table, array(), false, array('foreign_keys' => array($name => $definition)));
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name  = $db->getIndexName($name);
+        $query = "CREATE UNIQUE INDEX $name ON $table";
+        $fields = array();
+        foreach ($definition['fields'] as $field_name => $field) {
+            $field_string = $field_name;
+            if (!empty($field['sorting'])) {
+                switch ($field['sorting']) {
+                case 'ascending':
+                    $field_string.= ' ASC';
+                    break;
+                case 'descending':
+                    $field_string.= ' DESC';
+                    break;
+                }
+            }
+            $fields[] = $field_string;
+        }
+        $query .= ' ('.implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropConstraint()
+
+    /**
+     * drop existing constraint
+     *
+     * @param string    $table        name of table that should be used in method
+     * @param string    $name         name of the constraint to be dropped
+     * @param string    $primary      hint if the constraint is primary
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropConstraint($table, $name, $primary = false)
+    {
+        if ($primary || $name == 'PRIMARY') {
+            return $this->alterTable($table, array(), false, array('primary' => null));
+        }
+
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        //is it a FK constraint? If so, also delete the associated triggers
+        $db->loadModule('Reverse', null, true);
+        $definition = $db->reverse->getTableConstraintDefinition($table, $name);
+        if (!PEAR::isError($definition) && !empty($definition['foreign'])) {
+            //first drop the FK enforcing triggers
+            $result = $this->_dropFKTriggers($table, $name, $definition['references']['table']);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            //then drop the constraint itself
+            return $this->alterTable($table, array(), false, array('foreign_keys' => array($name => null)));
+        }
+
+        $name = $db->getIndexName($name);
+        return $db->exec("DROP INDEX $name");
+    }
+
+    // }}}
+    // {{{ _dropFKTriggers()
+    
+    /**
+     * Drop the triggers created to enforce the FOREIGN KEY constraint on the table
+     *
+     * @param string $table  table name
+     * @param string $fkname FOREIGN KEY constraint name
+     * @param string $referenced_table  referenced table name
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access private
+     */
+    function _dropFKTriggers($table, $fkname, $referenced_table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $triggers  = $this->listTableTriggers($table);
+        $triggers2 = $this->listTableTriggers($referenced_table);
+        if (!PEAR::isError($triggers2) && !PEAR::isError($triggers)) {
+            $triggers = array_merge($triggers, $triggers2);
+            $pattern = '/^'.$fkname.'(_pk)?_(insert|update|delete)_trg$/i';
+            foreach ($triggers as $trigger) {
+                if (preg_match($pattern, $trigger)) {
+                    $result = $db->exec('DROP TRIGGER '.$trigger);
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }]]
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(tbl_name)='.strtolower($table);
+        } else {
+            $query.= "tbl_name=$table";
+        }
+        $query.= " AND sql NOT NULL ORDER BY name";
+        $indexes = $db->queryCol($query, 'text');
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $sql) {
+            if (preg_match("/^create unique index ([^ ]+) on /i", $sql, $tmp)) {
+                $index = $this->_fixIndexName($tmp[1]);
+                if (!empty($index)) {
+                    $result[$index] = true;
+                }
+            }
+        }
+        
+        // also search in table definition for PRIMARY KEYs...
+        $query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(name)='.strtolower($table);
+        } else {
+            $query.= "name=$table";
+        }
+        $query.= " AND sql NOT NULL ORDER BY name";
+        $table_def = $db->queryOne($query, 'text');
+        if (PEAR::isError($table_def)) {
+            return $table_def;
+        }
+        if (preg_match("/\bPRIMARY\s+KEY\b\s*\(([^)]+)/i", $table_def, $tmp)) {
+            $result['primary'] = true;
+        }
+
+        // ...and for FOREIGN KEYs
+        if (preg_match_all("/\bCONSTRAINT\b\s+([^\s]+)\s+\bFOREIGN\s+KEY/imsx", $table_def, $tmp)) {
+            foreach ($tmp[1] as $fk) {
+                $result[$fk] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string    $seq_name     name of the sequence to be created
+     * @param string    $start         start value of the sequence; default is 1
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
+        $query = "CREATE TABLE $sequence_name ($seqcol_name INTEGER PRIMARY KEY DEFAULT 0 NOT NULL)";
+        $res = $db->exec($query);
+        if (PEAR::isError($res)) {
+            return $res;
+        }
+        if ($start == 1) {
+            return MDB2_OK;
+        }
+        $res = $db->exec("INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')');
+        if (!PEAR::isError($res)) {
+            return MDB2_OK;
+        }
+        // Handle error
+        $result = $db->exec("DROP TABLE $sequence_name");
+        if (PEAR::isError($result)) {
+            return $db->raiseError($result, null, null,
+                'could not drop inconsistent sequence table', __FUNCTION__);
+        }
+        return $db->raiseError($res, null, null,
+            'could not create sequence table', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string    $seq_name     name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP TABLE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sqlite_master WHERE type='table' AND sql NOT NULL ORDER BY name";
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if ($sqn = $this->_fixSequenceName($table_name, true)) {
+                $result[] = $sqn;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Native/Common.php b/program/lib/MDB2/Driver/Native/Common.php
new file mode 100644
index 0000000..c01caa3
--- /dev/null
+++ b/program/lib/MDB2/Driver/Native/Common.php
@@ -0,0 +1,61 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: Common.php,v 1.2 2007/09/09 13:47:36 quipo Exp $
+//
+
+/**
+ * Base class for the natuve modules that is extended by each MDB2 driver
+ *
+ * To load this module in the MDB2 object:
+ * $mdb->loadModule('Native');
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Native_Common extends MDB2_Module_Common
+{
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Native/mssql.php b/program/lib/MDB2/Driver/Native/mssql.php
new file mode 100644
index 0000000..e72faba
--- /dev/null
+++ b/program/lib/MDB2/Driver/Native/mssql.php
@@ -0,0 +1,60 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith, Frank M. Kromann                       |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mssql.php,v 1.9 2006/06/18 21:59:05 lsmith Exp $
+//
+
+require_once 'MDB2/Driver/Native/Common.php';
+
+/**
+ * MDB2 MSSQL driver for the native module
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@dybnet.de>
+ */
+class MDB2_Driver_Native_mssql extends MDB2_Driver_Native_Common
+{
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Native/mysql.php b/program/lib/MDB2/Driver/Native/mysql.php
new file mode 100644
index 0000000..90ff068
--- /dev/null
+++ b/program/lib/MDB2/Driver/Native/mysql.php
@@ -0,0 +1,60 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysql.php,v 1.9 2006/06/18 21:59:05 lsmith Exp $
+//
+
+require_once 'MDB2/Driver/Native/Common.php';
+
+/**
+ * MDB2 MySQL driver for the native module
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Native_mysql extends MDB2_Driver_Native_Common
+{
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Native/mysqli.php b/program/lib/MDB2/Driver/Native/mysqli.php
new file mode 100644
index 0000000..326c1d8
--- /dev/null
+++ b/program/lib/MDB2/Driver/Native/mysqli.php
@@ -0,0 +1,60 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysqli.php,v 1.8 2006/06/18 21:59:05 lsmith Exp $
+//
+
+require_once 'MDB2/Driver/Native/Common.php';
+
+/**
+ * MDB2 MySQLi driver for the native module
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Native_mysqli extends MDB2_Driver_Native_Common
+{
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Native/pgsql.php b/program/lib/MDB2/Driver/Native/pgsql.php
new file mode 100644
index 0000000..acab838
--- /dev/null
+++ b/program/lib/MDB2/Driver/Native/pgsql.php
@@ -0,0 +1,88 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Paul Cooper <pgc@ucecom.com>                                 |
+// +----------------------------------------------------------------------+
+//
+// $Id: pgsql.php,v 1.12 2006/07/15 13:07:15 lsmith Exp $
+
+require_once 'MDB2/Driver/Native/Common.php';
+
+/**
+ * MDB2 PostGreSQL driver for the native module
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Driver_Native_pgsql extends MDB2_Driver_Native_Common
+{
+    // }}}
+    // {{{ deleteOID()
+
+    /**
+     * delete an OID
+     *
+     * @param integer    $OID
+     * @return mixed MDB2_OK on success or MDB2 Error Object on failure
+     * @access public
+     */
+    function deleteOID($OID)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $connection = $db->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        if (!@pg_lo_unlink($connection, $OID)) {
+            return $db->raiseError(null, null, null,
+                'Unable to unlink OID: '.$OID, __FUNCTION__);
+        }
+        return MDB2_OK;
+    }
+
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Native/sqlite.php b/program/lib/MDB2/Driver/Native/sqlite.php
new file mode 100644
index 0000000..0213293
--- /dev/null
+++ b/program/lib/MDB2/Driver/Native/sqlite.php
@@ -0,0 +1,60 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: sqlite.php,v 1.9 2006/06/18 21:59:05 lsmith Exp $
+//
+
+require_once 'MDB2/Driver/Native/Common.php';
+
+/**
+ * MDB2 SQLite driver for the native module
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Native_sqlite extends MDB2_Driver_Native_Common
+{
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Reverse/Common.php b/program/lib/MDB2/Driver/Reverse/Common.php
new file mode 100644
index 0000000..43a2f25
--- /dev/null
+++ b/program/lib/MDB2/Driver/Reverse/Common.php
@@ -0,0 +1,511 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: Common.php,v 1.41 2007/09/09 13:47:36 quipo Exp $
+//
+
+/**
+ * @package MDB2
+ * @category Database
+ */
+
+/**
+ * These are constants for the tableInfo-function
+ * they are bitwised or'ed. so if there are more constants to be defined
+ * in the future, adjust MDB2_TABLEINFO_FULL accordingly
+ */
+
+define('MDB2_TABLEINFO_ORDER',      1);
+define('MDB2_TABLEINFO_ORDERTABLE', 2);
+define('MDB2_TABLEINFO_FULL',       3);
+
+/**
+ * Base class for the schema reverse engineering module that is extended by each MDB2 driver
+ *
+ * To load this module in the MDB2 object:
+ * $mdb->loadModule('Reverse');
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Reverse_Common extends MDB2_Module_Common
+{
+    // {{{ splitTableSchema()
+
+    /**
+     * Split the "[owner|schema].table" notation into an array
+     * @access private
+     */
+    function splitTableSchema($table)
+    {
+        $ret = array();
+        if (strpos($table, '.') !== false) {
+            return explode('.', $table);
+        }
+        return array(null, $table);
+    }
+
+    // }}}
+    // {{{ getTableFieldDefinition()
+
+    /**
+     * Get the structure of a field into an array
+     *
+     * @param string    $table     name of table that should be used in method
+     * @param string    $field     name of field that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure.
+     *          The returned array contains an array for each field definition,
+     *          with all or some of these indices, depending on the field data type:
+     *          [notnull] [nativetype] [length] [fixed] [default] [type] [mdb2type]
+     * @access public
+     */
+    function getTableFieldDefinition($table, $field)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ getTableIndexDefinition()
+
+    /**
+     * Get the structure of an index into an array
+     *
+     * @param string    $table      name of table that should be used in method
+     * @param string    $index      name of index that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     *          The returned array has this structure:
+     *          </pre>
+     *          array (
+     *              [fields] => array (
+     *                  [field1name] => array() // one entry per each field covered
+     *                  [field2name] => array() // by the index
+     *                  [field3name] => array(
+     *                      [sorting] => ascending
+     *                  )
+     *              )
+     *          );
+     *          </pre>
+     * @access public
+     */
+    function getTableIndexDefinition($table, $index)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ getTableConstraintDefinition()
+
+    /**
+     * Get the structure of an constraints into an array
+     *
+     * @param string    $table      name of table that should be used in method
+     * @param string    $index      name of index that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     *          The returned array has this structure:
+     *          <pre>
+     *          array (
+     *              [primary] => 0
+     *              [unique]  => 0
+     *              [foreign] => 1
+     *              [check]   => 0
+     *              [fields] => array (
+     *                  [field1name] => array() // one entry per each field covered
+     *                  [field2name] => array() // by the index
+     *                  [field3name] => array(
+     *                      [sorting]  => ascending
+     *                      [position] => 3
+     *                  )
+     *              )
+     *              [references] => array(
+     *                  [table] => name
+     *                  [fields] => array(
+     *                      [field1name] => array(  //one entry per each referenced field
+     *                           [position] => 1
+     *                      )
+     *                  )
+     *              )
+     *              [deferrable] => 0
+     *              [initiallydeferred] => 0
+     *              [onupdate] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
+     *              [ondelete] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
+     *              [match] => SIMPLE|PARTIAL|FULL
+     *          );
+     *          </pre>
+     * @access public
+     */
+    function getTableConstraintDefinition($table, $index)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ getSequenceDefinition()
+
+    /**
+     * Get the structure of a sequence into an array
+     *
+     * @param string    $sequence   name of sequence that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     *          The returned array has this structure:
+     *          <pre>
+     *          array (
+     *              [start] => n
+     *          );
+     *          </pre>
+     * @access public
+     */
+    function getSequenceDefinition($sequence)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $start = $db->currId($sequence);
+        if (PEAR::isError($start)) {
+            return $start;
+        }
+        if ($db->supports('current_id')) {
+            $start++;
+        } else {
+            $db->warnings[] = 'database does not support getting current
+                sequence value, the sequence value was incremented';
+        }
+        $definition = array();
+        if ($start != 1) {
+            $definition = array('start' => $start);
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTriggerDefinition()
+
+    /**
+     * Get the structure of a trigger into an array
+     *
+     * EXPERIMENTAL
+     *
+     * WARNING: this function is experimental and may change the returned value 
+     * at any time until labelled as non-experimental
+     *
+     * @param string    $trigger    name of trigger that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     *          The returned array has this structure:
+     *          <pre>
+     *          array (
+     *              [trigger_name]    => 'trigger name',
+     *              [table_name]      => 'table name',
+     *              [trigger_body]    => 'trigger body definition',
+     *              [trigger_type]    => 'BEFORE' | 'AFTER',
+     *              [trigger_event]   => 'INSERT' | 'UPDATE' | 'DELETE'
+     *                  //or comma separated list of multiple events, when supported
+     *              [trigger_enabled] => true|false
+     *              [trigger_comment] => 'trigger comment',
+     *          );
+     *          </pre>
+     *          The oci8 driver also returns a [when_clause] index.
+     * @access public
+     */
+    function getTriggerDefinition($trigger)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ tableInfo()
+
+    /**
+     * Returns information about a table or a result set
+     *
+     * The format of the resulting array depends on which <var>$mode</var>
+     * you select.  The sample output below is based on this query:
+     * <pre>
+     *    SELECT tblFoo.fldID, tblFoo.fldPhone, tblBar.fldId
+     *    FROM tblFoo
+     *    JOIN tblBar ON tblFoo.fldId = tblBar.fldId
+     * </pre>
+     *
+     * <ul>
+     * <li>
+     *
+     * <kbd>null</kbd> (default)
+     *   <pre>
+     *   [0] => Array (
+     *       [table] => tblFoo
+     *       [name] => fldId
+     *       [type] => int
+     *       [len] => 11
+     *       [flags] => primary_key not_null
+     *   )
+     *   [1] => Array (
+     *       [table] => tblFoo
+     *       [name] => fldPhone
+     *       [type] => string
+     *       [len] => 20
+     *       [flags] =>
+     *   )
+     *   [2] => Array (
+     *       [table] => tblBar
+     *       [name] => fldId
+     *       [type] => int
+     *       [len] => 11
+     *       [flags] => primary_key not_null
+     *   )
+     *   </pre>
+     *
+     * </li><li>
+     *
+     * <kbd>MDB2_TABLEINFO_ORDER</kbd>
+     *
+     *   <p>In addition to the information found in the default output,
+     *   a notation of the number of columns is provided by the
+     *   <samp>num_fields</samp> element while the <samp>order</samp>
+     *   element provides an array with the column names as the keys and
+     *   their location index number (corresponding to the keys in the
+     *   the default output) as the values.</p>
+     *
+     *   <p>If a result set has identical field names, the last one is
+     *   used.</p>
+     *
+     *   <pre>
+     *   [num_fields] => 3
+     *   [order] => Array (
+     *       [fldId] => 2
+     *       [fldTrans] => 1
+     *   )
+     *   </pre>
+     *
+     * </li><li>
+     *
+     * <kbd>MDB2_TABLEINFO_ORDERTABLE</kbd>
+     *
+     *   <p>Similar to <kbd>MDB2_TABLEINFO_ORDER</kbd> but adds more
+     *   dimensions to the array in which the table names are keys and
+     *   the field names are sub-keys.  This is helpful for queries that
+     *   join tables which have identical field names.</p>
+     *
+     *   <pre>
+     *   [num_fields] => 3
+     *   [ordertable] => Array (
+     *       [tblFoo] => Array (
+     *           [fldId] => 0
+     *           [fldPhone] => 1
+     *       )
+     *       [tblBar] => Array (
+     *           [fldId] => 2
+     *       )
+     *   )
+     *   </pre>
+     *
+     * </li>
+     * </ul>
+     *
+     * The <samp>flags</samp> element contains a space separated list
+     * of extra information about the field.  This data is inconsistent
+     * between DBMS's due to the way each DBMS works.
+     *   + <samp>primary_key</samp>
+     *   + <samp>unique_key</samp>
+     *   + <samp>multiple_key</samp>
+     *   + <samp>not_null</samp>
+     *
+     * Most DBMS's only provide the <samp>table</samp> and <samp>flags</samp>
+     * elements if <var>$result</var> is a table name.  The following DBMS's
+     * provide full information from queries:
+     *   + fbsql
+     *   + mysql
+     *
+     * If the 'portability' option has <samp>MDB2_PORTABILITY_FIX_CASE</samp>
+     * turned on, the names of tables and fields will be lower or upper cased.
+     *
+     * @param object|string  $result  MDB2_result object from a query or a
+     *                                string containing the name of a table.
+     *                                While this also accepts a query result
+     *                                resource identifier, this behavior is
+     *                                deprecated.
+     * @param int  $mode   either unused or one of the tableInfo modes:
+     *                     <kbd>MDB2_TABLEINFO_ORDERTABLE</kbd>,
+     *                     <kbd>MDB2_TABLEINFO_ORDER</kbd> or
+     *                     <kbd>MDB2_TABLEINFO_FULL</kbd> (which does both).
+     *                     These are bitwise, so the first two can be
+     *                     combined using <kbd>|</kbd>.
+     *
+     * @return array  an associative array with the information requested.
+     *                 A MDB2_Error object on failure.
+     *
+     * @see MDB2_Driver_Common::setOption()
+     */
+    function tableInfo($result, $mode = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!is_string($result)) {
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'method not implemented', __FUNCTION__);
+        }
+
+        $db->loadModule('Manager', null, true);
+        $fields = $db->manager->listTableFields($result);
+        if (PEAR::isError($fields)) {
+            return $fields;
+        }
+
+        $flags = array();
+
+        $idxname_format = $db->getOption('idxname_format');
+        $db->setOption('idxname_format', '%s');
+
+        $indexes = $db->manager->listTableIndexes($result);
+        if (PEAR::isError($indexes)) {
+            $db->setOption('idxname_format', $idxname_format);
+            return $indexes;
+        }
+
+        foreach ($indexes as $index) {
+            $definition = $this->getTableIndexDefinition($result, $index);
+            if (PEAR::isError($definition)) {
+                $db->setOption('idxname_format', $idxname_format);
+                return $definition;
+            }
+            if (count($definition['fields']) > 1) {
+                foreach ($definition['fields'] as $field => $sort) {
+                    $flags[$field] = 'multiple_key';
+                }
+            }
+        }
+
+        $constraints = $db->manager->listTableConstraints($result);
+        if (PEAR::isError($constraints)) {
+            return $constraints;
+        }
+
+        foreach ($constraints as $constraint) {
+            $definition = $this->getTableConstraintDefinition($result, $constraint);
+            if (PEAR::isError($definition)) {
+                $db->setOption('idxname_format', $idxname_format);
+                return $definition;
+            }
+            $flag = !empty($definition['primary'])
+                ? 'primary_key' : (!empty($definition['unique'])
+                    ? 'unique_key' : false);
+            if ($flag) {
+                foreach ($definition['fields'] as $field => $sort) {
+                    if (empty($flags[$field]) || $flags[$field] != 'primary_key') {
+                        $flags[$field] = $flag;
+                    }
+                }
+            }
+        }
+
+        if ($mode) {
+            $res['num_fields'] = count($fields);
+        }
+
+        foreach ($fields as $i => $field) {
+            $definition = $this->getTableFieldDefinition($result, $field);
+            if (PEAR::isError($definition)) {
+                $db->setOption('idxname_format', $idxname_format);
+                return $definition;
+            }
+            $res[$i] = $definition[0];
+            $res[$i]['name'] = $field;
+            $res[$i]['table'] = $result;
+            $res[$i]['type'] = preg_replace('/^([a-z]+).*$/i', '\\1', trim($definition[0]['nativetype']));
+            // 'primary_key', 'unique_key', 'multiple_key'
+            $res[$i]['flags'] = empty($flags[$field]) ? '' : $flags[$field];
+            // not_null', 'unsigned', 'auto_increment', 'default_[rawencodedvalue]'
+            if (!empty($res[$i]['notnull'])) {
+                $res[$i]['flags'].= ' not_null';
+            }
+            if (!empty($res[$i]['unsigned'])) {
+                $res[$i]['flags'].= ' unsigned';
+            }
+            if (!empty($res[$i]['auto_increment'])) {
+                $res[$i]['flags'].= ' autoincrement';
+            }
+            if (!empty($res[$i]['default'])) {
+                $res[$i]['flags'].= ' default_'.rawurlencode($res[$i]['default']);
+            }
+
+            if ($mode & MDB2_TABLEINFO_ORDER) {
+                $res['order'][$res[$i]['name']] = $i;
+            }
+            if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
+                $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
+            }
+        }
+
+        $db->setOption('idxname_format', $idxname_format);
+        return $res;
+    }
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Reverse/mssql.php b/program/lib/MDB2/Driver/Reverse/mssql.php
new file mode 100644
index 0000000..a27c95d
--- /dev/null
+++ b/program/lib/MDB2/Driver/Reverse/mssql.php
@@ -0,0 +1,653 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith, Frank M. Kromann, Lorenzo Alberton     |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Authors: Lukas Smith <smith@pooteeweet.org>                          |
+// |          Lorenzo Alberton <l.alberton@quipo.it>                      |
+// +----------------------------------------------------------------------+
+//
+// $Id: mssql.php,v 1.48 2007/11/25 13:38:29 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Reverse/Common.php';
+
+/**
+ * MDB2 MSSQL driver for the schema reverse engineering module
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@dybnet.de>
+ * @author  Lorenzo Alberton <l.alberton@quipo.it>
+ */
+class MDB2_Driver_Reverse_mssql extends MDB2_Driver_Reverse_Common
+{
+    // {{{ getTableFieldDefinition()
+
+    /**
+     * Get the structure of a field into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $field_name name of field that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableFieldDefinition($table_name, $field_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->loadModule('Datatype', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $table = $db->quoteIdentifier($table, true);
+        $fldname = $db->quoteIdentifier($field_name, true);
+
+        $query = "SELECT t.table_name,
+                         c.column_name 'name',
+                         c.data_type 'type',
+                         CASE c.is_nullable WHEN 'YES' THEN 1 ELSE 0 END AS 'is_nullable',
+                         c.column_default,
+                         c.character_maximum_length 'length',
+                         c.numeric_precision,
+                         c.numeric_scale,
+                         c.character_set_name,
+                         c.collation_name
+                    FROM INFORMATION_SCHEMA.TABLES t,
+                         INFORMATION_SCHEMA.COLUMNS c
+                   WHERE t.table_name = c.table_name
+                     AND t.table_name = '$table'
+                     AND c.column_name = '$fldname'";
+        if (!empty($schema)) {
+            $query .= " AND t.table_schema = '" .$db->quoteIdentifier($schema, true) ."'";
+        }
+        $query .= ' ORDER BY t.table_name';
+        $column = $db->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($column)) {
+            return $column;
+        }
+        if (empty($column)) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'it was not specified an existing table column', __FUNCTION__);
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $column['name'] = strtolower($column['name']);
+            } else {
+                $column['name'] = strtoupper($column['name']);
+            }
+        } else {
+            $column = array_change_key_case($column, $db->options['field_case']);
+        }
+        $mapped_datatype = $db->datatype->mapNativeDatatype($column);
+        if (PEAR::isError($mapped_datatype)) {
+            return $mapped_datatype;
+        }
+        list($types, $length, $unsigned, $fixed) = $mapped_datatype;
+        $notnull = true;
+        if ($column['is_nullable']) {
+            $notnull = false;
+        }
+        $default = false;
+        if (array_key_exists('column_default', $column)) {
+            $default = $column['column_default'];
+            if (is_null($default) && $notnull) {
+                $default = '';
+            } elseif (strlen($default) > 4
+                   && substr($default, 0, 1) == '('
+                   &&  substr($default, -1, 1) == ')'
+            ) {
+                //mssql wraps the default value in parentheses: "((1234))", "(NULL)"
+                $default = trim($default, '()');
+                if ($default == 'NULL') {
+                    $default = null;
+                }
+            }
+        }
+        $definition[0] = array(
+            'notnull' => $notnull,
+            'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
+        );
+        if (!is_null($length)) {
+            $definition[0]['length'] = $length;
+        }
+        if (!is_null($unsigned)) {
+            $definition[0]['unsigned'] = $unsigned;
+        }
+        if (!is_null($fixed)) {
+            $definition[0]['fixed'] = $fixed;
+        }
+        if ($default !== false) {
+            $definition[0]['default'] = $default;
+        }
+        foreach ($types as $key => $type) {
+            $definition[$key] = $definition[0];
+            if ($type == 'clob' || $type == 'blob') {
+                unset($definition[$key]['default']);
+            }
+            $definition[$key]['type'] = $type;
+            $definition[$key]['mdb2type'] = $type;
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTableIndexDefinition()
+
+    /**
+     * Get the structure of an index into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $index_name name of index that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableIndexDefinition($table_name, $index_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $table = $db->quoteIdentifier($table, true);
+        //$idxname = $db->quoteIdentifier($index_name, true);
+
+        $query = "SELECT OBJECT_NAME(i.id) tablename,
+                         i.name indexname,
+                         c.name field_name,
+                         CASE INDEXKEY_PROPERTY(i.id, i.indid, ik.keyno, 'IsDescending')
+                           WHEN 1 THEN 'DESC' ELSE 'ASC'
+                         END 'collation',
+                         ik.keyno 'position'
+                    FROM sysindexes i
+                    JOIN sysindexkeys ik ON ik.id = i.id AND ik.indid = i.indid
+                    JOIN syscolumns c ON c.id = ik.id AND c.colid = ik.colid
+                   WHERE OBJECT_NAME(i.id) = '$table'
+                     AND i.name = '%s'
+                     AND NOT EXISTS (
+                            SELECT *
+                              FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE k
+                             WHERE k.table_name = OBJECT_NAME(i.id)
+                               AND k.constraint_name = i.name";
+        if (!empty($schema)) {
+            $query .= " AND k.table_schema = '" .$db->quoteIdentifier($schema, true) ."'";
+        }
+        $query .= ')
+                ORDER BY tablename, indexname, ik.keyno';
+
+        $index_name_mdb2 = $db->getIndexName($index_name);
+        $result = $db->queryRow(sprintf($query, $index_name_mdb2));
+        if (!PEAR::isError($result) && !is_null($result)) {
+            // apply 'idxname_format' only if the query succeeded, otherwise
+            // fallback to the given $index_name, without transformation
+            $index_name = $index_name_mdb2;
+        }
+        $result = $db->query(sprintf($query, $index_name));
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        $definition = array();
+        while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
+            $column_name = $row['field_name'];
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $column_name = strtolower($column_name);
+                } else {
+                    $column_name = strtoupper($column_name);
+                }
+            }
+            $definition['fields'][$column_name] = array(
+                'position' => (int)$row['position'],
+            );
+            if (!empty($row['collation'])) {
+                $definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'ASC'
+                    ? 'ascending' : 'descending');
+            }
+        }
+        $result->free();
+        if (empty($definition['fields'])) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'it was not specified an existing table index', __FUNCTION__);
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTableConstraintDefinition()
+
+    /**
+     * Get the structure of a constraint into an array
+     *
+     * @param string $table_name      name of table that should be used in method
+     * @param string $constraint_name name of constraint that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableConstraintDefinition($table_name, $constraint_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SELECT k.table_name,
+                         k.column_name field_name,
+                         CASE c.constraint_type WHEN 'PRIMARY KEY' THEN 1 ELSE 0 END 'primary',
+                         CASE c.constraint_type WHEN 'UNIQUE' THEN 1 ELSE 0 END 'unique',
+                         CASE c.constraint_type WHEN 'FOREIGN KEY' THEN 1 ELSE 0 END 'foreign',
+                         CASE c.constraint_type WHEN 'CHECK' THEN 1 ELSE 0 END 'check',
+                         CASE c.is_deferrable WHEN 'NO' THEN 0 ELSE 1 END 'deferrable',
+                         CASE c.initially_deferred WHEN 'NO' THEN 0 ELSE 1 END 'initiallydeferred',
+                         rc.match_option 'match',
+                		 rc.update_rule 'onupdate',
+                         rc.delete_rule 'ondelete',
+                         kcu.table_name 'references_table',
+                         kcu.column_name 'references_field',
+                         k.ordinal_position 'field_position'
+                    FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE k
+                    LEFT JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS c
+                      ON k.table_name = c.table_name
+                     AND k.table_schema = c.table_schema
+                     AND k.table_catalog = c.table_catalog
+                     AND k.constraint_catalog = c.constraint_catalog
+                     AND k.constraint_name = c.constraint_name
+               LEFT JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS rc
+                      ON rc.constraint_schema = c.constraint_schema
+                     AND rc.constraint_catalog = c.constraint_catalog
+                     AND rc.constraint_name = c.constraint_name
+               LEFT JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE kcu
+                      ON rc.unique_constraint_schema = kcu.constraint_schema
+                     AND rc.unique_constraint_catalog = kcu.constraint_catalog
+                     AND rc.unique_constraint_name = kcu.constraint_name
+					 AND k.ordinal_position = kcu.ordinal_position
+                   WHERE k.constraint_catalog = DB_NAME()
+                     AND k.table_name = '$table'
+                     AND k.constraint_name = '%s'";
+        if (!empty($schema)) {
+            $query .= " AND k.table_schema = '" .$db->quoteIdentifier($schema, true) ."'";
+        }
+        $query .= ' ORDER BY k.constraint_name,
+                             k.ordinal_position';
+
+        $constraint_name_mdb2 = $db->getIndexName($constraint_name);
+        $result = $db->queryRow(sprintf($query, $constraint_name_mdb2));
+        if (!PEAR::isError($result) && !is_null($result)) {
+            // apply 'idxname_format' only if the query succeeded, otherwise
+            // fallback to the given $index_name, without transformation
+            $constraint_name = $constraint_name_mdb2;
+        }
+        $result = $db->query(sprintf($query, $constraint_name));
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        $definition = array(
+            'fields' => array()
+        );
+        while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
+            $row = array_change_key_case($row, CASE_LOWER);
+            $column_name = $row['field_name'];
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $column_name = strtolower($column_name);
+                } else {
+                    $column_name = strtoupper($column_name);
+                }
+            }
+            $definition['fields'][$column_name] = array(
+                'position' => (int)$row['field_position']
+            );
+            if ($row['foreign']) {
+                $ref_column_name = $row['references_field'];
+                if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                    if ($db->options['field_case'] == CASE_LOWER) {
+                        $ref_column_name = strtolower($ref_column_name);
+                    } else {
+                        $ref_column_name = strtoupper($ref_column_name);
+                    }
+                }
+                $definition['references']['table'] = $row['references_table'];
+                $definition['references']['fields'][$ref_column_name] = array(
+                    'position' => (int)$row['field_position']
+                );
+            }
+            //collation?!?
+            /*
+            if (!empty($row['collation'])) {
+                $definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'ASC'
+                    ? 'ascending' : 'descending');
+            }
+            */
+            $lastrow = $row;
+            // otherwise $row is no longer usable on exit from loop
+        }
+        $result->free();
+        if (empty($definition['fields'])) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                $constraint_name . ' is not an existing table constraint', __FUNCTION__);
+        }
+
+        $definition['primary'] = (boolean)$lastrow['primary'];
+        $definition['unique']  = (boolean)$lastrow['unique'];
+        $definition['foreign'] = (boolean)$lastrow['foreign'];
+        $definition['check']   = (boolean)$lastrow['check'];
+        $definition['deferrable'] = (boolean)$lastrow['deferrable'];
+        $definition['initiallydeferred'] = (boolean)$lastrow['initiallydeferred'];
+        $definition['onupdate'] = $lastrow['onupdate'];
+        $definition['ondelete'] = $lastrow['ondelete'];
+        $definition['match']    = $lastrow['match'];
+
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTriggerDefinition()
+
+    /**
+     * Get the structure of a trigger into an array
+     *
+     * EXPERIMENTAL
+     *
+     * WARNING: this function is experimental and may change the returned value
+     * at any time until labelled as non-experimental
+     *
+     * @param string    $trigger    name of trigger that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTriggerDefinition($trigger)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT sys1.name trigger_name,
+                         sys2.name table_name,
+                         c.text trigger_body,
+                         c.encrypted is_encripted,
+                         CASE
+                           WHEN OBJECTPROPERTY(sys1.id, 'ExecIsTriggerDisabled') = 1
+                           THEN 0 ELSE 1
+                         END trigger_enabled,
+                         CASE
+                           WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsertTrigger') = 1
+                           THEN 'INSERT'
+                           WHEN OBJECTPROPERTY(sys1.id, 'ExecIsUpdateTrigger') = 1
+                           THEN 'UPDATE'
+                           WHEN OBJECTPROPERTY(sys1.id, 'ExecIsDeleteTrigger') = 1
+                           THEN 'DELETE'
+                         END trigger_event,
+                         CASE WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsteadOfTrigger') = 1
+                           THEN 'INSTEAD OF' ELSE 'AFTER'
+                         END trigger_type,
+                         '' trigger_comment
+                    FROM sysobjects sys1
+                    JOIN sysobjects sys2 ON sys1.parent_obj = sys2.id
+                    JOIN syscomments c ON sys1.id = c.id
+                   WHERE sys1.xtype = 'TR'
+                     AND sys1.name = ". $db->quote($trigger, 'text');
+
+        $types = array(
+            'trigger_name'    => 'text',
+            'table_name'      => 'text',
+            'trigger_body'    => 'text',
+            'trigger_type'    => 'text',
+            'trigger_event'   => 'text',
+            'trigger_comment' => 'text',
+            'trigger_enabled' => 'boolean',
+            'is_encripted'    => 'boolean',
+        );
+
+        $def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($def)) {
+            return $def;
+        }
+        $trg_body = $db->queryCol('EXEC sp_helptext '. $db->quote($trigger, 'text'), 'text');
+        if (!PEAR::isError($trg_body)) {
+            $def['trigger_body'] = implode('', $trg_body);
+        }
+        return $def;
+    }
+
+    // }}}
+    // {{{ tableInfo()
+
+    /**
+     * Returns information about a table or a result set
+     *
+     * NOTE: only supports 'table' and 'flags' if <var>$result</var>
+     * is a table name.
+     *
+     * @param object|string  $result  MDB2_result object from a query or a
+     *                                 string containing the name of a table.
+     *                                 While this also accepts a query result
+     *                                 resource identifier, this behavior is
+     *                                 deprecated.
+     * @param int            $mode    a valid tableInfo mode
+     *
+     * @return array  an associative array with the information requested.
+     *                 A MDB2_Error object on failure.
+     *
+     * @see MDB2_Driver_Common::tableInfo()
+     */
+    function tableInfo($result, $mode = null)
+    {
+        if (is_string($result)) {
+           return parent::tableInfo($result, $mode);
+        }
+
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
+        if (!is_resource($resource)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'Could not generate result resource', __FUNCTION__);
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $case_func = 'strtolower';
+            } else {
+                $case_func = 'strtoupper';
+            }
+        } else {
+            $case_func = 'strval';
+        }
+
+        $count = @mssql_num_fields($resource);
+        $res   = array();
+
+        if ($mode) {
+            $res['num_fields'] = $count;
+        }
+
+        $db->loadModule('Datatype', null, true);
+        for ($i = 0; $i < $count; $i++) {
+            $res[$i] = array(
+                'table' => '',
+                'name'  => $case_func(@mssql_field_name($resource, $i)),
+                'type'  => @mssql_field_type($resource, $i),
+                'length'   => @mssql_field_length($resource, $i),
+                'flags' => '',
+            );
+            $mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
+            if (PEAR::isError($mdb2type_info)) {
+               return $mdb2type_info;
+            }
+            $res[$i]['mdb2type'] = $mdb2type_info[0][0];
+            if ($mode & MDB2_TABLEINFO_ORDER) {
+                $res['order'][$res[$i]['name']] = $i;
+            }
+            if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
+                $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
+            }
+        }
+
+        return $res;
+    }
+
+    // }}}
+    // {{{ _mssql_field_flags()
+
+    /**
+     * Get a column's flags
+     *
+     * Supports "not_null", "primary_key",
+     * "auto_increment" (mssql identity), "timestamp" (mssql timestamp),
+     * "unique_key" (mssql unique index, unique check or primary_key) and
+     * "multiple_key" (multikey index)
+     *
+     * mssql timestamp is NOT similar to the mysql timestamp so this is maybe
+     * not useful at all - is the behaviour of mysql_field_flags that primary
+     * keys are alway unique? is the interpretation of multiple_key correct?
+     *
+     * @param string $table   the table name
+     * @param string $column  the field name
+     *
+     * @return string  the flags
+     *
+     * @access protected
+     * @author Joern Barthel <j_barthel@web.de>
+     */
+    function _mssql_field_flags($table, $column)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        static $tableName = null;
+        static $flags = array();
+
+        if ($table != $tableName) {
+
+            $flags = array();
+            $tableName = $table;
+
+            // get unique and primary keys
+            $res = $db->queryAll("EXEC SP_HELPINDEX[$table]", null, MDB2_FETCHMODE_ASSOC);
+
+            foreach ($res as $val) {
+                $val = array_change_key_case($val, CASE_LOWER);
+                $keys = explode(', ', $val['index_keys']);
+
+                if (sizeof($keys) > 1) {
+                    foreach ($keys as $key) {
+                        $this->_add_flag($flags[$key], 'multiple_key');
+                    }
+                }
+
+                if (strpos($val['index_description'], 'primary key')) {
+                    foreach ($keys as $key) {
+                        $this->_add_flag($flags[$key], 'primary_key');
+                    }
+                } elseif (strpos($val['index_description'], 'unique')) {
+                    foreach ($keys as $key) {
+                        $this->_add_flag($flags[$key], 'unique_key');
+                    }
+                }
+            }
+
+            // get auto_increment, not_null and timestamp
+            $res = $db->queryAll("EXEC SP_COLUMNS[$table]", null, MDB2_FETCHMODE_ASSOC);
+
+            foreach ($res as $val) {
+                $val = array_change_key_case($val, CASE_LOWER);
+                if ($val['nullable'] == '0') {
+                    $this->_add_flag($flags[$val['column_name']], 'not_null');
+                }
+                if (strpos($val['type_name'], 'identity')) {
+                    $this->_add_flag($flags[$val['column_name']], 'auto_increment');
+                }
+                if (strpos($val['type_name'], 'timestamp')) {
+                    $this->_add_flag($flags[$val['column_name']], 'timestamp');
+                }
+            }
+        }
+
+        if (!empty($flags[$column])) {
+            return(implode(' ', $flags[$column]));
+        }
+        return '';
+    }
+
+    // }}}
+    // {{{ _add_flag()
+
+    /**
+     * Adds a string to the flags array if the flag is not yet in there
+     * - if there is no flag present the array is created
+     *
+     * @param array  &$array  the reference to the flag-array
+     * @param string $value   the flag value
+     *
+     * @return void
+     *
+     * @access protected
+     * @author Joern Barthel <j_barthel@web.de>
+     */
+    function _add_flag(&$array, $value)
+    {
+        if (!is_array($array)) {
+            $array = array($value);
+        } elseif (!in_array($value, $array)) {
+            array_push($array, $value);
+        }
+    }
+
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Reverse/mysql.php b/program/lib/MDB2/Driver/Reverse/mysql.php
new file mode 100644
index 0000000..ac6abed
--- /dev/null
+++ b/program/lib/MDB2/Driver/Reverse/mysql.php
@@ -0,0 +1,514 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysql.php,v 1.79 2007/11/25 13:38:29 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Reverse/Common.php';
+
+/**
+ * MDB2 MySQL driver for the schema reverse engineering module
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ * @author  Lorenzo Alberton <l.alberton@quipo.it>
+ */
+class MDB2_Driver_Reverse_mysql extends MDB2_Driver_Reverse_Common
+{
+    // {{{ getTableFieldDefinition()
+
+    /**
+     * Get the structure of a field into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $field_name name of field that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableFieldDefinition($table_name, $field_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->loadModule('Datatype', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW FULL COLUMNS FROM $table LIKE ".$db->quote($field_name);
+        $columns = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($columns)) {
+            return $columns;
+        }
+        foreach ($columns as $column) {
+            $column = array_change_key_case($column, CASE_LOWER);
+            $column['name'] = $column['field'];
+            unset($column['field']);
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $column['name'] = strtolower($column['name']);
+                } else {
+                    $column['name'] = strtoupper($column['name']);
+                }
+            } else {
+                $column = array_change_key_case($column, $db->options['field_case']);
+            }
+            if ($field_name == $column['name']) {
+                $mapped_datatype = $db->datatype->mapNativeDatatype($column);
+                if (PEAR::isError($mapped_datatype)) {
+                    return $mapped_datatype;
+                }
+                list($types, $length, $unsigned, $fixed) = $mapped_datatype;
+                $notnull = false;
+                if (empty($column['null']) || $column['null'] !== 'YES') {
+                    $notnull = true;
+                }
+                $default = false;
+                if (array_key_exists('default', $column)) {
+                    $default = $column['default'];
+                    if (is_null($default) && $notnull) {
+                        $default = '';
+                    }
+                }
+                $autoincrement = false;
+                if (!empty($column['extra']) && $column['extra'] == 'auto_increment') {
+                    $autoincrement = true;
+                }
+                $collate = null;
+                if (!empty($column['collation'])) {
+                    $collate = $column['collation'];
+                    $charset = preg_replace('/(.+?)(_.+)?/', '$1', $collate);
+                }
+
+                $definition[0] = array(
+                    'notnull' => $notnull,
+                    'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
+                );
+                if (!is_null($length)) {
+                    $definition[0]['length'] = $length;
+                }
+                if (!is_null($unsigned)) {
+                    $definition[0]['unsigned'] = $unsigned;
+                }
+                if (!is_null($fixed)) {
+                    $definition[0]['fixed'] = $fixed;
+                }
+                if ($default !== false) {
+                    $definition[0]['default'] = $default;
+                }
+                if ($autoincrement !== false) {
+                    $definition[0]['autoincrement'] = $autoincrement;
+                }
+                if (!is_null($collate)) {
+                    $definition[0]['collate'] = $collate;
+                    $definition[0]['charset'] = $charset;
+                }
+                foreach ($types as $key => $type) {
+                    $definition[$key] = $definition[0];
+                    if ($type == 'clob' || $type == 'blob') {
+                        unset($definition[$key]['default']);
+                    } elseif ($type == 'timestamp' && $notnull && empty($definition[$key]['default'])) {
+                        $definition[$key]['default'] = '0000-00-00 00:00:00';
+                    }
+                    $definition[$key]['type'] = $type;
+                    $definition[$key]['mdb2type'] = $type;
+                }
+                return $definition;
+            }
+        }
+
+        return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+            'it was not specified an existing table column', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ getTableIndexDefinition()
+
+    /**
+     * Get the structure of an index into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $index_name name of index that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableIndexDefinition($table_name, $index_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */";
+        $index_name_mdb2 = $db->getIndexName($index_name);
+        $result = $db->queryRow(sprintf($query, $db->quote($index_name_mdb2)));
+        if (!PEAR::isError($result) && !is_null($result)) {
+            // apply 'idxname_format' only if the query succeeded, otherwise
+            // fallback to the given $index_name, without transformation
+            $index_name = $index_name_mdb2;
+        }
+        $result = $db->query(sprintf($query, $db->quote($index_name)));
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $colpos = 1;
+        $definition = array();
+        while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
+            $row = array_change_key_case($row, CASE_LOWER);
+            $key_name = $row['key_name'];
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $key_name = strtolower($key_name);
+                } else {
+                    $key_name = strtoupper($key_name);
+                }
+            }
+            if ($index_name == $key_name) {
+                if (!$row['non_unique']) {
+                    return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                        $index_name . ' is not an existing table index', __FUNCTION__);
+                }
+                $column_name = $row['column_name'];
+                if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                    if ($db->options['field_case'] == CASE_LOWER) {
+                        $column_name = strtolower($column_name);
+                    } else {
+                        $column_name = strtoupper($column_name);
+                    }
+                }
+                $definition['fields'][$column_name] = array(
+                    'position' => $colpos++
+                );
+                if (!empty($row['collation'])) {
+                    $definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
+                        ? 'ascending' : 'descending');
+                }
+            }
+        }
+        $result->free();
+        if (empty($definition['fields'])) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                $index_name . ' is not an existing table index', __FUNCTION__);
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTableConstraintDefinition()
+
+    /**
+     * Get the structure of a constraint into an array
+     *
+     * @param string $table_name      name of table that should be used in method
+     * @param string $constraint_name name of constraint that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableConstraintDefinition($table_name, $constraint_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+        $constraint_name_original = $constraint_name;
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */";
+        if (strtolower($constraint_name) != 'primary') {
+            $constraint_name_mdb2 = $db->getIndexName($constraint_name);
+            $result = $db->queryRow(sprintf($query, $db->quote($constraint_name_mdb2)));
+            if (!PEAR::isError($result) && !is_null($result)) {
+                // apply 'idxname_format' only if the query succeeded, otherwise
+                // fallback to the given $index_name, without transformation
+                $constraint_name = $constraint_name_mdb2;
+            }
+        }
+        $result = $db->query(sprintf($query, $db->quote($constraint_name)));
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $colpos = 1;
+        //default values, eventually overridden
+        $definition = array(
+            'primary' => false,
+            'unique'  => false,
+            'foreign' => false,
+            'check'   => false,
+            'fields'  => array(),
+            'references' => array(
+                'table'  => '',
+                'fields' => array(),
+            ),
+            'onupdate'  => '',
+            'ondelete'  => '',
+            'match'     => '',
+            'deferrable'        => false,
+            'initiallydeferred' => false,
+        );
+        while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
+            $row = array_change_key_case($row, CASE_LOWER);
+            $key_name = $row['key_name'];
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $key_name = strtolower($key_name);
+                } else {
+                    $key_name = strtoupper($key_name);
+                }
+            }
+            if ($constraint_name == $key_name) {
+                if ($row['non_unique']) {
+                    //FOREIGN KEY?
+                    $query = 'SHOW CREATE TABLE '. $db->escape($table);
+                    $constraint = $db->queryOne($query, 'text', 1);
+                    if (!PEAR::isError($constraint) && !empty($constraint)) {
+                        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                            if ($db->options['field_case'] == CASE_LOWER) {
+                                $constraint = strtolower($constraint);
+                            } else {
+                                $constraint = strtoupper($constraint);
+                            }
+                        }
+                        $pattern = '/\bCONSTRAINT\s+'.$constraint_name.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^ ]+) \(([^\)]+)\)/i';
+                        if (!preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
+                            //fallback to original constraint name
+                            $pattern = '/\bCONSTRAINT\s+'.$constraint_name_original.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^ ]+) \(([^\)]+)\)/i';
+                        }
+                        if (preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
+                            $definition['foreign'] = true;
+                            $column_names = explode(',', $matches[1]);
+                            $referenced_cols = explode(',', $matches[3]);
+                            $definition['references'] = array(
+                                'table'  => $matches[2],
+                                'fields' => array(),
+                            );
+                            $colpos = 1;
+                            foreach ($column_names as $column_name) {
+                                $definition['fields'][trim($column_name)] = array(
+                                    'position' => $colpos++
+                                );
+                            }
+                            $colpos = 1;
+                            foreach ($referenced_cols as $column_name) {
+                                $definition['references']['fields'][trim($column_name)] = array(
+                                    'position' => $colpos++
+                                );
+                            }
+                            $definition['onupdate'] = 'NO ACTION';
+                            $definition['ondelete'] = 'NO ACTION';
+                            $definition['match']    = 'SIMPLE';
+                            return $definition;
+                        }
+                    }
+
+                    return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                        $constraint_name . ' is not an existing table constraint', __FUNCTION__);
+                }
+                if ($row['key_name'] == 'PRIMARY') {
+                    $definition['primary'] = true;
+                } elseif (!$row['non_unique']) {
+                    $definition['unique'] = true;
+                }
+                $column_name = $row['column_name'];
+                if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                    if ($db->options['field_case'] == CASE_LOWER) {
+                        $column_name = strtolower($column_name);
+                    } else {
+                        $column_name = strtoupper($column_name);
+                    }
+                }
+                $definition['fields'][$column_name] = array(
+                    'position' => $colpos++
+                );
+                if (!empty($row['collation'])) {
+                    $definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
+                        ? 'ascending' : 'descending');
+                }
+            }
+        }
+        $result->free();
+        if (empty($definition['fields'])) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                $constraint_name . ' is not an existing table constraint', __FUNCTION__);
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTriggerDefinition()
+
+    /**
+     * Get the structure of a trigger into an array
+     *
+     * EXPERIMENTAL
+     *
+     * WARNING: this function is experimental and may change the returned value
+     * at any time until labelled as non-experimental
+     *
+     * @param string    $trigger    name of trigger that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTriggerDefinition($trigger)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT trigger_name,
+                         event_object_table AS table_name,
+                         action_statement AS trigger_body,
+                         action_timing AS trigger_type,
+                         event_manipulation AS trigger_event
+                    FROM information_schema.triggers
+                   WHERE trigger_name = '. $db->quote($trigger, 'text');
+        $types = array(
+            'trigger_name'    => 'text',
+            'table_name'      => 'text',
+            'trigger_body'    => 'text',
+            'trigger_type'    => 'text',
+            'trigger_event'   => 'text',
+        );
+        $def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($def)) {
+            return $def;
+        }
+        $def['trigger_comment'] = '';
+        $def['trigger_enabled'] = true;
+        return $def;
+    }
+
+    // }}}
+    // {{{ tableInfo()
+
+    /**
+     * Returns information about a table or a result set
+     *
+     * @param object|string  $result  MDB2_result object from a query or a
+     *                                 string containing the name of a table.
+     *                                 While this also accepts a query result
+     *                                 resource identifier, this behavior is
+     *                                 deprecated.
+     * @param int            $mode    a valid tableInfo mode
+     *
+     * @return array  an associative array with the information requested.
+     *                 A MDB2_Error object on failure.
+     *
+     * @see MDB2_Driver_Common::setOption()
+     */
+    function tableInfo($result, $mode = null)
+    {
+        if (is_string($result)) {
+           return parent::tableInfo($result, $mode);
+        }
+
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
+        if (!is_resource($resource)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'Could not generate result resource', __FUNCTION__);
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $case_func = 'strtolower';
+            } else {
+                $case_func = 'strtoupper';
+            }
+        } else {
+            $case_func = 'strval';
+        }
+
+        $count = @mysql_num_fields($resource);
+        $res   = array();
+        if ($mode) {
+            $res['num_fields'] = $count;
+        }
+
+        $db->loadModule('Datatype', null, true);
+        for ($i = 0; $i < $count; $i++) {
+            $res[$i] = array(
+                'table' => $case_func(@mysql_field_table($resource, $i)),
+                'name'  => $case_func(@mysql_field_name($resource, $i)),
+                'type'  => @mysql_field_type($resource, $i),
+                'length'   => @mysql_field_len($resource, $i),
+                'flags' => @mysql_field_flags($resource, $i),
+            );
+            if ($res[$i]['type'] == 'string') {
+                $res[$i]['type'] = 'char';
+            } elseif ($res[$i]['type'] == 'unknown') {
+                $res[$i]['type'] = 'decimal';
+            }
+            $mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
+            if (PEAR::isError($mdb2type_info)) {
+               return $mdb2type_info;
+            }
+            $res[$i]['mdb2type'] = $mdb2type_info[0][0];
+            if ($mode & MDB2_TABLEINFO_ORDER) {
+                $res['order'][$res[$i]['name']] = $i;
+            }
+            if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
+                $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
+            }
+        }
+
+        return $res;
+    }
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Reverse/mysqli.php b/program/lib/MDB2/Driver/Reverse/mysqli.php
new file mode 100644
index 0000000..741fac0
--- /dev/null
+++ b/program/lib/MDB2/Driver/Reverse/mysqli.php
@@ -0,0 +1,578 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysqli.php,v 1.69 2007/11/25 13:38:29 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Reverse/Common.php';
+
+/**
+ * MDB2 MySQLi driver for the schema reverse engineering module
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ * @author  Lorenzo Alberton <l.alberton@quipo.it>
+ */
+class MDB2_Driver_Reverse_mysqli extends MDB2_Driver_Reverse_Common
+{
+    /**
+     * Array for converting MYSQLI_*_FLAG constants to text values
+     * @var    array
+     * @access public
+     */
+    var $flags = array(
+        MYSQLI_NOT_NULL_FLAG        => 'not_null',
+        MYSQLI_PRI_KEY_FLAG         => 'primary_key',
+        MYSQLI_UNIQUE_KEY_FLAG      => 'unique_key',
+        MYSQLI_MULTIPLE_KEY_FLAG    => 'multiple_key',
+        MYSQLI_BLOB_FLAG            => 'blob',
+        MYSQLI_UNSIGNED_FLAG        => 'unsigned',
+        MYSQLI_ZEROFILL_FLAG        => 'zerofill',
+        MYSQLI_AUTO_INCREMENT_FLAG  => 'auto_increment',
+        MYSQLI_TIMESTAMP_FLAG       => 'timestamp',
+        MYSQLI_SET_FLAG             => 'set',
+        // MYSQLI_NUM_FLAG             => 'numeric',  // unnecessary
+        // MYSQLI_PART_KEY_FLAG        => 'multiple_key',  // duplicatvie
+        MYSQLI_GROUP_FLAG           => 'group_by'
+    );
+
+    /**
+     * Array for converting MYSQLI_TYPE_* constants to text values
+     * @var    array
+     * @access public
+     */
+    var $types = array(
+        MYSQLI_TYPE_DECIMAL     => 'decimal',
+        246                     => 'decimal',
+        MYSQLI_TYPE_TINY        => 'tinyint',
+        MYSQLI_TYPE_SHORT       => 'int',
+        MYSQLI_TYPE_LONG        => 'int',
+        MYSQLI_TYPE_FLOAT       => 'float',
+        MYSQLI_TYPE_DOUBLE      => 'double',
+        // MYSQLI_TYPE_NULL        => 'DEFAULT NULL',  // let flags handle it
+        MYSQLI_TYPE_TIMESTAMP   => 'timestamp',
+        MYSQLI_TYPE_LONGLONG    => 'bigint',
+        MYSQLI_TYPE_INT24       => 'mediumint',
+        MYSQLI_TYPE_DATE        => 'date',
+        MYSQLI_TYPE_TIME        => 'time',
+        MYSQLI_TYPE_DATETIME    => 'datetime',
+        MYSQLI_TYPE_YEAR        => 'year',
+        MYSQLI_TYPE_NEWDATE     => 'date',
+        MYSQLI_TYPE_ENUM        => 'enum',
+        MYSQLI_TYPE_SET         => 'set',
+        MYSQLI_TYPE_TINY_BLOB   => 'tinyblob',
+        MYSQLI_TYPE_MEDIUM_BLOB => 'mediumblob',
+        MYSQLI_TYPE_LONG_BLOB   => 'longblob',
+        MYSQLI_TYPE_BLOB        => 'blob',
+        MYSQLI_TYPE_VAR_STRING  => 'varchar',
+        MYSQLI_TYPE_STRING      => 'char',
+        MYSQLI_TYPE_GEOMETRY    => 'geometry',
+    );
+
+    // {{{ getTableFieldDefinition()
+
+    /**
+     * Get the structure of a field into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $field_name name of field that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableFieldDefinition($table_name, $field_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->loadModule('Datatype', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW FULL COLUMNS FROM $table LIKE ".$db->quote($field_name);
+        $columns = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($columns)) {
+            return $columns;
+        }
+        foreach ($columns as $column) {
+            $column = array_change_key_case($column, CASE_LOWER);
+            $column['name'] = $column['field'];
+            unset($column['field']);
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $column['name'] = strtolower($column['name']);
+                } else {
+                    $column['name'] = strtoupper($column['name']);
+                }
+            } else {
+                $column = array_change_key_case($column, $db->options['field_case']);
+            }
+            if ($field_name == $column['name']) {
+                $mapped_datatype = $db->datatype->mapNativeDatatype($column);
+                if (PEAR::isError($mapped_datatype)) {
+                    return $mapped_datatype;
+                }
+                list($types, $length, $unsigned, $fixed) = $mapped_datatype;
+                $notnull = false;
+                if (empty($column['null']) || $column['null'] !== 'YES') {
+                    $notnull = true;
+                }
+                $default = false;
+                if (array_key_exists('default', $column)) {
+                    $default = $column['default'];
+                    if (is_null($default) && $notnull) {
+                        $default = '';
+                    }
+                }
+                $autoincrement = false;
+                if (!empty($column['extra']) && $column['extra'] == 'auto_increment') {
+                    $autoincrement = true;
+                }
+                $collate = null;
+                if (!empty($column['collation'])) {
+                    $collate = $column['collation'];
+                    $charset = preg_replace('/(.+?)(_.+)?/', '$1', $collate);
+                }
+
+                $definition[0] = array(
+                    'notnull' => $notnull,
+                    'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
+                );
+                if (!is_null($length)) {
+                    $definition[0]['length'] = $length;
+                }
+                if (!is_null($unsigned)) {
+                    $definition[0]['unsigned'] = $unsigned;
+                }
+                if (!is_null($fixed)) {
+                    $definition[0]['fixed'] = $fixed;
+                }
+                if ($default !== false) {
+                    $definition[0]['default'] = $default;
+                }
+                if ($autoincrement !== false) {
+                    $definition[0]['autoincrement'] = $autoincrement;
+                }
+                if (!is_null($collate)) {
+                    $definition[0]['collate'] = $collate;
+                    $definition[0]['charset'] = $charset;
+                }
+                foreach ($types as $key => $type) {
+                    $definition[$key] = $definition[0];
+                    if ($type == 'clob' || $type == 'blob') {
+                        unset($definition[$key]['default']);
+                    } elseif ($type == 'timestamp' && $notnull && empty($definition[$key]['default'])) {
+                        $definition[$key]['default'] = '0000-00-00 00:00:00';
+                    }
+                    $definition[$key]['type'] = $type;
+                    $definition[$key]['mdb2type'] = $type;
+                }
+                return $definition;
+            }
+        }
+
+        return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+            'it was not specified an existing table column', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ getTableIndexDefinition()
+
+    /**
+     * Get the structure of an index into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $index_name name of index that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableIndexDefinition($table_name, $index_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */";
+        $index_name_mdb2 = $db->getIndexName($index_name);
+        $result = $db->queryRow(sprintf($query, $db->quote($index_name_mdb2)));
+        if (!PEAR::isError($result) && !is_null($result)) {
+            // apply 'idxname_format' only if the query succeeded, otherwise
+            // fallback to the given $index_name, without transformation
+            $index_name = $index_name_mdb2;
+        }
+        $result = $db->query(sprintf($query, $db->quote($index_name)));
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $colpos = 1;
+        $definition = array();
+        while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
+            $row = array_change_key_case($row, CASE_LOWER);
+            $key_name = $row['key_name'];
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $key_name = strtolower($key_name);
+                } else {
+                    $key_name = strtoupper($key_name);
+                }
+            }
+            if ($index_name == $key_name) {
+                if (!$row['non_unique']) {
+                    return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                        $index_name . ' is not an existing table index', __FUNCTION__);
+                }
+                $column_name = $row['column_name'];
+                if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                    if ($db->options['field_case'] == CASE_LOWER) {
+                        $column_name = strtolower($column_name);
+                    } else {
+                        $column_name = strtoupper($column_name);
+                    }
+                }
+                $definition['fields'][$column_name] = array(
+                    'position' => $colpos++
+                );
+                if (!empty($row['collation'])) {
+                    $definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
+                        ? 'ascending' : 'descending');
+                }
+            }
+        }
+        $result->free();
+        if (empty($definition['fields'])) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                $index_name . ' is not an existing table index', __FUNCTION__);
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTableConstraintDefinition()
+
+    /**
+     * Get the structure of a constraint into an array
+     *
+     * @param string $table_name      name of table that should be used in method
+     * @param string $constraint_name name of constraint that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableConstraintDefinition($table_name, $constraint_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+        $constraint_name_original = $constraint_name;
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */";
+        if (strtolower($constraint_name) != 'primary') {
+            $constraint_name_mdb2 = $db->getIndexName($constraint_name);
+            $result = $db->queryRow(sprintf($query, $db->quote($constraint_name_mdb2)));
+            if (!PEAR::isError($result) && !is_null($result)) {
+                // apply 'idxname_format' only if the query succeeded, otherwise
+                // fallback to the given $index_name, without transformation
+                $constraint_name = $constraint_name_mdb2;
+            }
+        }
+        $result = $db->query(sprintf($query, $db->quote($constraint_name)));
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $colpos = 1;
+        //default values, eventually overridden
+        $definition = array(
+            'primary' => false,
+            'unique'  => false,
+            'foreign' => false,
+            'check'   => false,
+            'fields'  => array(),
+            'references' => array(
+                'table'  => '',
+                'fields' => array(),
+            ),
+            'onupdate'  => '',
+            'ondelete'  => '',
+            'match'     => '',
+            'deferrable'        => false,
+            'initiallydeferred' => false,
+        );
+        while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
+            $row = array_change_key_case($row, CASE_LOWER);
+            $key_name = $row['key_name'];
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $key_name = strtolower($key_name);
+                } else {
+                    $key_name = strtoupper($key_name);
+                }
+            }
+            if ($constraint_name == $key_name) {
+                if ($row['non_unique']) {
+                    //FOREIGN KEY?
+                    $query = 'SHOW CREATE TABLE '. $db->escape($table);
+                    $constraint = $db->queryOne($query, 'text', 1);
+                    if (!PEAR::isError($constraint) && !empty($constraint)) {
+                        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                            if ($db->options['field_case'] == CASE_LOWER) {
+                                $constraint = strtolower($constraint);
+                            } else {
+                                $constraint = strtoupper($constraint);
+                            }
+                        }
+                        $pattern = '/\bCONSTRAINT\s+'.$constraint_name.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^ ]+) \(([^\)]+)\)/i';
+                        if (!preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
+                            //fallback to original constraint name
+                            $pattern = '/\bCONSTRAINT\s+'.$constraint_name_original.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^ ]+) \(([^\)]+)\)/i';
+                        }
+                        if (preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
+                            $definition['foreign'] = true;
+                            $column_names = explode(',', $matches[1]);
+                            $referenced_cols = explode(',', $matches[3]);
+                            $definition['references'] = array(
+                                'table'  => $matches[2],
+                                'fields' => array(),
+                            );
+                            $colpos = 1;
+                            foreach ($column_names as $column_name) {
+                                $definition['fields'][trim($column_name)] = array(
+                                    'position' => $colpos++
+                                );
+                            }
+                            $colpos = 1;
+                            foreach ($referenced_cols as $column_name) {
+                                $definition['references']['fields'][trim($column_name)] = array(
+                                    'position' => $colpos++
+                                );
+                            }
+                            $definition['onupdate'] = 'NO ACTION';
+                            $definition['ondelete'] = 'NO ACTION';
+                            $definition['match']    = 'SIMPLE';
+                            return $definition;
+                        }
+                    }
+
+                    return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                        $constraint_name . ' is not an existing table constraint', __FUNCTION__);
+                }
+                if ($row['key_name'] == 'PRIMARY') {
+                    $definition['primary'] = true;
+                } elseif (!$row['non_unique']) {
+                    $definition['unique'] = true;
+                }
+                $column_name = $row['column_name'];
+                if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                    if ($db->options['field_case'] == CASE_LOWER) {
+                        $column_name = strtolower($column_name);
+                    } else {
+                        $column_name = strtoupper($column_name);
+                    }
+                }
+                $definition['fields'][$column_name] = array(
+                    'position' => $colpos++
+                );
+                if (!empty($row['collation'])) {
+                    $definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
+                        ? 'ascending' : 'descending');
+                }
+            }
+        }
+        $result->free();
+        if (empty($definition['fields'])) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                $constraint_name . ' is not an existing table constraint', __FUNCTION__);
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTriggerDefinition()
+
+    /**
+     * Get the structure of a trigger into an array
+     *
+     * EXPERIMENTAL
+     *
+     * WARNING: this function is experimental and may change the returned value
+     * at any time until labelled as non-experimental
+     *
+     * @param string    $trigger    name of trigger that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTriggerDefinition($trigger)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT trigger_name,
+                         event_object_table AS table_name,
+                         action_statement AS trigger_body,
+                         action_timing AS trigger_type,
+                         event_manipulation AS trigger_event
+                    FROM information_schema.triggers
+                   WHERE trigger_name = '. $db->quote($trigger, 'text');
+        $types = array(
+            'trigger_name'    => 'text',
+            'table_name'      => 'text',
+            'trigger_body'    => 'text',
+            'trigger_type'    => 'text',
+            'trigger_event'   => 'text',
+        );
+        $def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($def)) {
+            return $def;
+        }
+        $def['trigger_comment'] = '';
+        $def['trigger_enabled'] = true;
+        return $def;
+    }
+
+    // }}}
+    // {{{ tableInfo()
+
+    /**
+     * Returns information about a table or a result set
+     *
+     * @param object|string  $result  MDB2_result object from a query or a
+     *                                 string containing the name of a table.
+     *                                 While this also accepts a query result
+     *                                 resource identifier, this behavior is
+     *                                 deprecated.
+     * @param int            $mode    a valid tableInfo mode
+     *
+     * @return array  an associative array with the information requested.
+     *                 A MDB2_Error object on failure.
+     *
+     * @see MDB2_Driver_Common::setOption()
+     */
+    function tableInfo($result, $mode = null)
+    {
+        if (is_string($result)) {
+           return parent::tableInfo($result, $mode);
+        }
+
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
+        if (!is_object($resource)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'Could not generate result resource', __FUNCTION__);
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $case_func = 'strtolower';
+            } else {
+                $case_func = 'strtoupper';
+            }
+        } else {
+            $case_func = 'strval';
+        }
+
+        $count = @mysqli_num_fields($resource);
+        $res = array();
+        if ($mode) {
+            $res['num_fields'] = $count;
+        }
+
+        $db->loadModule('Datatype', null, true);
+        for ($i = 0; $i < $count; $i++) {
+            $tmp = @mysqli_fetch_field($resource);
+
+            $flags = '';
+            foreach ($this->flags as $const => $means) {
+                if ($tmp->flags & $const) {
+                    $flags.= $means . ' ';
+                }
+            }
+            if ($tmp->def) {
+                $flags.= 'default_' . rawurlencode($tmp->def);
+            }
+            $flags = trim($flags);
+
+            $res[$i] = array(
+                'table'  => $case_func($tmp->table),
+                'name'   => $case_func($tmp->name),
+                'type'   => isset($this->types[$tmp->type])
+                    ? $this->types[$tmp->type] : 'unknown',
+                // http://bugs.php.net/?id=36579
+                'length' => $tmp->length,
+                'flags'  => $flags,
+            );
+            $mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
+            if (PEAR::isError($mdb2type_info)) {
+               return $mdb2type_info;
+            }
+            $res[$i]['mdb2type'] = $mdb2type_info[0][0];
+            if ($mode & MDB2_TABLEINFO_ORDER) {
+                $res['order'][$res[$i]['name']] = $i;
+            }
+            if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
+                $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
+            }
+        }
+
+        return $res;
+    }
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Reverse/pgsql.php b/program/lib/MDB2/Driver/Reverse/pgsql.php
new file mode 100644
index 0000000..930eea9
--- /dev/null
+++ b/program/lib/MDB2/Driver/Reverse/pgsql.php
@@ -0,0 +1,527 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Authors: Paul Cooper <pgc@ucecom.com>                                |
+// |          Lorenzo Alberton <l.alberton@quipo.it>                      |
+// +----------------------------------------------------------------------+
+//
+// $Id: pgsql.php,v 1.68 2007/11/25 13:38:29 quipo Exp $
+
+require_once 'MDB2/Driver/Reverse/Common.php';
+
+/**
+ * MDB2 PostGreSQL driver for the schema reverse engineering module
+ *
+ * @package  MDB2
+ * @category Database
+ * @author   Paul Cooper <pgc@ucecom.com>
+ * @author   Lorenzo Alberton <l.alberton@quipo.it>
+ */
+class MDB2_Driver_Reverse_pgsql extends MDB2_Driver_Reverse_Common
+{
+    // {{{ getTableFieldDefinition()
+
+    /**
+     * Get the structure of a field into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $field_name name of field that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableFieldDefinition($table_name, $field_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->loadModule('Datatype', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $query = "SELECT a.attname AS name,
+                         t.typname AS type,
+                         CASE a.attlen
+                           WHEN -1 THEN
+	                         CASE t.typname
+	                           WHEN 'numeric' THEN (a.atttypmod / 65536)
+	                           WHEN 'decimal' THEN (a.atttypmod / 65536)
+	                           WHEN 'money'   THEN (a.atttypmod / 65536)
+	                           ELSE CASE a.atttypmod
+                                 WHEN -1 THEN NULL
+	                             ELSE a.atttypmod - 4
+	                           END
+                             END
+	                       ELSE a.attlen
+                         END AS length,
+	                     CASE t.typname
+	                       WHEN 'numeric' THEN (a.atttypmod % 65536) - 4
+	                       WHEN 'decimal' THEN (a.atttypmod % 65536) - 4
+	                       WHEN 'money'   THEN (a.atttypmod % 65536) - 4
+	                       ELSE 0
+                         END AS scale,
+                         a.attnotnull,
+                         a.atttypmod,
+                         a.atthasdef,
+                         (SELECT substring(pg_get_expr(d.adbin, d.adrelid) for 128)
+                            FROM pg_attrdef d
+                           WHERE d.adrelid = a.attrelid
+                             AND d.adnum = a.attnum
+                             AND a.atthasdef
+                         ) as default
+                    FROM pg_attribute a,
+                         pg_class c,
+                         pg_type t
+                   WHERE c.relname = ".$db->quote($table, 'text')."
+                     AND a.atttypid = t.oid
+                     AND c.oid = a.attrelid
+                     AND NOT a.attisdropped
+                     AND a.attnum > 0
+                     AND a.attname = ".$db->quote($field_name, 'text')."
+                ORDER BY a.attnum";
+        $column = $db->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($column)) {
+            return $column;
+        }
+
+        if (empty($column)) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'it was not specified an existing table column', __FUNCTION__);
+        }
+
+        $column = array_change_key_case($column, CASE_LOWER);
+        $mapped_datatype = $db->datatype->mapNativeDatatype($column);
+        if (PEAR::isError($mapped_datatype)) {
+            return $mapped_datatype;
+        }
+        list($types, $length, $unsigned, $fixed) = $mapped_datatype;
+        $notnull = false;
+        if (!empty($column['attnotnull']) && $column['attnotnull'] == 't') {
+            $notnull = true;
+        }
+        $default = null;
+        if ($column['atthasdef'] === 't'
+            && !preg_match("/nextval\('([^']+)'/", $column['default'])
+        ) {
+            $pattern = '/(\'.*\')::[\w ]+$/i';
+            $default = $column['default'];#substr($column['adsrc'], 1, -1);
+            if (is_null($default) && $notnull) {
+                $default = '';
+            } elseif (!empty($default) && preg_match($pattern, $default)) {
+                //remove data type cast
+                $default = preg_replace ($pattern, '\\1', $default);
+            }
+        }
+        $autoincrement = false;
+        if (preg_match("/nextval\('([^']+)'/", $column['default'], $nextvals)) {
+            $autoincrement = true;
+        }
+        $definition[0] = array('notnull' => $notnull, 'nativetype' => $column['type']);
+        if (!is_null($length)) {
+            $definition[0]['length'] = $length;
+        }
+        if (!is_null($unsigned)) {
+            $definition[0]['unsigned'] = $unsigned;
+        }
+        if (!is_null($fixed)) {
+            $definition[0]['fixed'] = $fixed;
+        }
+        if ($default !== false) {
+            $definition[0]['default'] = $default;
+        }
+        if ($autoincrement !== false) {
+            $definition[0]['autoincrement'] = $autoincrement;
+        }
+        foreach ($types as $key => $type) {
+            $definition[$key] = $definition[0];
+            if ($type == 'clob' || $type == 'blob') {
+                unset($definition[$key]['default']);
+            }
+            $definition[$key]['type'] = $type;
+            $definition[$key]['mdb2type'] = $type;
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTableIndexDefinition()
+
+    /**
+     * Get the structure of an index into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $index_name name of index that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableIndexDefinition($table_name, $index_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $query = 'SELECT relname, indkey FROM pg_index, pg_class';
+        $query.= ' WHERE pg_class.oid = pg_index.indexrelid';
+        $query.= " AND indisunique != 't' AND indisprimary != 't'";
+        $query.= ' AND pg_class.relname = %s';
+        $index_name_mdb2 = $db->getIndexName($index_name);
+        $row = $db->queryRow(sprintf($query, $db->quote($index_name_mdb2, 'text')), null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($row) || empty($row)) {
+            // fallback to the given $index_name, without transformation
+            $row = $db->queryRow(sprintf($query, $db->quote($index_name, 'text')), null, MDB2_FETCHMODE_ASSOC);
+        }
+        if (PEAR::isError($row)) {
+            return $row;
+        }
+
+        if (empty($row)) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'it was not specified an existing table index', __FUNCTION__);
+        }
+
+        $row = array_change_key_case($row, CASE_LOWER);
+
+        $db->loadModule('Manager', null, true);
+        $columns = $db->manager->listTableFields($table_name);
+
+        $definition = array();
+
+        $index_column_numbers = explode(' ', $row['indkey']);
+
+        $colpos = 1;
+        foreach ($index_column_numbers as $number) {
+            $definition['fields'][$columns[($number - 1)]] = array(
+                'position' => $colpos++,
+                'sorting' => 'ascending',
+            );
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTableConstraintDefinition()
+
+    /**
+     * Get the structure of a constraint into an array
+     *
+     * @param string $table_name      name of table that should be used in method
+     * @param string $constraint_name name of constraint that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableConstraintDefinition($table_name, $constraint_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $query = "SELECT c.oid,
+                         c.conname AS constraint_name,
+                         CASE WHEN c.contype = 'c' THEN 1 ELSE 0 END AS \"check\",
+                         CASE WHEN c.contype = 'f' THEN 1 ELSE 0 END AS \"foreign\",
+                         CASE WHEN c.contype = 'p' THEN 1 ELSE 0 END AS \"primary\",
+                         CASE WHEN c.contype = 'u' THEN 1 ELSE 0 END AS \"unique\",
+                         CASE WHEN c.condeferrable = 'f' THEN 0 ELSE 1 END AS deferrable,
+                         CASE WHEN c.condeferred = 'f' THEN 0 ELSE 1 END AS initiallydeferred,
+                         --array_to_string(c.conkey, ' ') AS constraint_key,
+                         t.relname AS table_name,
+                         t2.relname AS references_table,
+                         CASE confupdtype
+                           WHEN 'a' THEN 'NO ACTION'
+                           WHEN 'r' THEN 'RESTRICT'
+                           WHEN 'c' THEN 'CASCADE'
+                           WHEN 'n' THEN 'SET NULL'
+                           WHEN 'd' THEN 'SET DEFAULT'
+                         END AS onupdate,
+                         CASE confdeltype
+                           WHEN 'a' THEN 'NO ACTION'
+                           WHEN 'r' THEN 'RESTRICT'
+                           WHEN 'c' THEN 'CASCADE'
+                           WHEN 'n' THEN 'SET NULL'
+                           WHEN 'd' THEN 'SET DEFAULT'
+                         END AS ondelete,
+                         CASE confmatchtype
+                           WHEN 'u' THEN 'UNSPECIFIED'
+                           WHEN 'f' THEN 'FULL'
+                           WHEN 'p' THEN 'PARTIAL'
+                         END AS match,
+                         --array_to_string(c.confkey, ' ') AS fk_constraint_key,
+                         consrc
+                    FROM pg_constraint c
+               LEFT JOIN pg_class t  ON c.conrelid  = t.oid
+               LEFT JOIN pg_class t2 ON c.confrelid = t2.oid
+                   WHERE c.conname = %s
+                    AND t.relname = " . $db->quote($table, 'text');
+        $constraint_name_mdb2 = $db->getIndexName($constraint_name);
+        $row = $db->queryRow(sprintf($query, $db->quote($constraint_name_mdb2, 'text')), null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($row) || empty($row)) {
+            // fallback to the given $index_name, without transformation
+            $constraint_name_mdb2 = $constraint_name;
+            $row = $db->queryRow(sprintf($query, $db->quote($constraint_name_mdb2, 'text')), null, MDB2_FETCHMODE_ASSOC);
+        }
+        if (PEAR::isError($row)) {
+            return $row;
+        }
+
+        if (empty($row)) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                $constraint_name . ' is not an existing table constraint', __FUNCTION__);
+        }
+
+        $row = array_change_key_case($row, CASE_LOWER);
+
+        $definition = array(
+            'primary' => (boolean)$row['primary'],
+            'unique'  => (boolean)$row['unique'],
+            'foreign' => (boolean)$row['foreign'],
+            'check'   => (boolean)$row['check'],
+            'fields'  => array(),
+            'references' => array(
+                'table'  => $row['references_table'],
+                'fields' => array(),
+            ),
+            'deferrable' => (boolean)$row['deferrable'],
+            'initiallydeferred' => (boolean)$row['initiallydeferred'],
+            'onupdate' => $row['onupdate'],
+            'ondelete' => $row['ondelete'],
+            'match'    => $row['match'],
+        );
+
+        $query = 'SELECT a.attname
+                    FROM pg_constraint c
+               LEFT JOIN pg_class t  ON c.conrelid  = t.oid
+               LEFT JOIN pg_attribute a ON a.attrelid = t.oid AND a.attnum = ANY(c.conkey)
+                   WHERE c.conname = %s
+                     AND t.relname = ' . $db->quote($table, 'text');
+        $constraint_name_mdb2 = $db->getIndexName($constraint_name);
+        $fields = $db->queryCol(sprintf($query, $db->quote($constraint_name_mdb2, 'text')), null);
+        if (PEAR::isError($fields)) {
+            return $fields;
+        }
+        $colpos = 1;
+        foreach ($fields as $field) {
+            $definition['fields'][$field] = array(
+                'position' => $colpos++,
+                'sorting' => 'ascending',
+            );
+        }
+        
+        if ($definition['foreign']) {
+            $query = 'SELECT a.attname
+                        FROM pg_constraint c
+                   LEFT JOIN pg_class t  ON c.confrelid  = t.oid
+                   LEFT JOIN pg_attribute a ON a.attrelid = t.oid AND a.attnum = ANY(c.conkey)
+                       WHERE c.conname = %s
+                         AND t.relname = ' . $db->quote($definition['references']['table'], 'text');
+            $constraint_name_mdb2 = $db->getIndexName($constraint_name);
+            $foreign_fields = $db->queryCol(sprintf($query, $db->quote($constraint_name_mdb2, 'text')), null);
+            if (PEAR::isError($foreign_fields)) {
+                return $foreign_fields;
+            }
+            $colpos = 1;
+            foreach ($foreign_fields as $foreign_field) {
+                $definition['references']['fields'][$foreign_field] = array(
+                    'position' => $colpos++,
+                );
+            }
+        }
+        
+        if ($definition['check']) {
+            $check_def = $db->queryOne("SELECT pg_get_constraintdef(" . $row['oid'] . ", 't')");
+            // ...
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTriggerDefinition()
+
+    /**
+     * Get the structure of a trigger into an array
+     *
+     * EXPERIMENTAL
+     *
+     * WARNING: this function is experimental and may change the returned value
+     * at any time until labelled as non-experimental
+     *
+     * @param string $trigger name of trigger that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     *
+     * @TODO: add support for plsql functions and functions with args
+     */
+    function getTriggerDefinition($trigger)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT trg.tgname AS trigger_name,
+                         tbl.relname AS table_name,
+                         CASE
+                            WHEN p.proname IS NOT NULL THEN 'EXECUTE PROCEDURE ' || p.proname || '();'
+                            ELSE ''
+                         END AS trigger_body,
+                         CASE trg.tgtype & cast(2 as int2)
+                            WHEN 0 THEN 'AFTER'
+                            ELSE 'BEFORE'
+                         END AS trigger_type,
+                         CASE trg.tgtype & cast(28 as int2)
+                            WHEN 16 THEN 'UPDATE'
+                            WHEN 8 THEN 'DELETE'
+                            WHEN 4 THEN 'INSERT'
+                            WHEN 20 THEN 'INSERT, UPDATE'
+                            WHEN 28 THEN 'INSERT, UPDATE, DELETE'
+                            WHEN 24 THEN 'UPDATE, DELETE'
+                            WHEN 12 THEN 'INSERT, DELETE'
+                         END AS trigger_event,
+                         trg.tgenabled AS trigger_enabled,
+                         obj_description(trg.oid, 'pg_trigger') AS trigger_comment
+                    FROM pg_trigger trg,
+                         pg_class tbl,
+                         pg_proc p
+                   WHERE trg.tgrelid = tbl.oid
+                     AND trg.tgfoid = p.oid
+                     AND trg.tgname = ". $db->quote($trigger, 'text');
+        $types = array(
+            'trigger_name'    => 'text',
+            'table_name'      => 'text',
+            'trigger_body'    => 'text',
+            'trigger_type'    => 'text',
+            'trigger_event'   => 'text',
+            'trigger_comment' => 'text',
+            'trigger_enabled' => 'boolean',
+        );
+        return $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
+    }
+    
+    // }}}
+    // {{{ tableInfo()
+
+    /**
+     * Returns information about a table or a result set
+     *
+     * NOTE: only supports 'table' and 'flags' if <var>$result</var>
+     * is a table name.
+     *
+     * @param object|string  $result  MDB2_result object from a query or a
+     *                                 string containing the name of a table.
+     *                                 While this also accepts a query result
+     *                                 resource identifier, this behavior is
+     *                                 deprecated.
+     * @param int            $mode    a valid tableInfo mode
+     *
+     * @return array  an associative array with the information requested.
+     *                 A MDB2_Error object on failure.
+     *
+     * @see MDB2_Driver_Common::tableInfo()
+     */
+    function tableInfo($result, $mode = null)
+    {
+        if (is_string($result)) {
+           return parent::tableInfo($result, $mode);
+        }
+
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
+        if (!is_resource($resource)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'Could not generate result resource', __FUNCTION__);
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $case_func = 'strtolower';
+            } else {
+                $case_func = 'strtoupper';
+            }
+        } else {
+            $case_func = 'strval';
+        }
+
+        $count = @pg_num_fields($resource);
+        $res   = array();
+
+        if ($mode) {
+            $res['num_fields'] = $count;
+        }
+
+        $db->loadModule('Datatype', null, true);
+        for ($i = 0; $i < $count; $i++) {
+            $res[$i] = array(
+                'table' => function_exists('pg_field_table') ? @pg_field_table($resource, $i) : '',
+                'name'  => $case_func(@pg_field_name($resource, $i)),
+                'type'  => @pg_field_type($resource, $i),
+                'length' => @pg_field_size($resource, $i),
+                'flags' => '',
+            );
+            $mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
+            if (PEAR::isError($mdb2type_info)) {
+               return $mdb2type_info;
+            }
+            $res[$i]['mdb2type'] = $mdb2type_info[0][0];
+            if ($mode & MDB2_TABLEINFO_ORDER) {
+                $res['order'][$res[$i]['name']] = $i;
+            }
+            if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
+                $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
+            }
+        }
+
+        return $res;
+    }
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Reverse/sqlite.php b/program/lib/MDB2/Driver/Reverse/sqlite.php
new file mode 100644
index 0000000..2ba81c7
--- /dev/null
+++ b/program/lib/MDB2/Driver/Reverse/sqlite.php
@@ -0,0 +1,573 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith, Lorenzo Alberton                       |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Authors: Lukas Smith <smith@pooteeweet.org>                          |
+// |          Lorenzo Alberton <l.alberton@quipo.it>                      |
+// +----------------------------------------------------------------------+
+//
+// $Id: sqlite.php,v 1.78 2007/12/01 10:46:13 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Reverse/Common.php';
+
+/**
+ * MDB2 SQlite driver for the schema reverse engineering module
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Reverse_sqlite extends MDB2_Driver_Reverse_Common
+{
+    function _getTableColumns($sql)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        $start_pos  = strpos($sql, '(');
+        $end_pos    = strrpos($sql, ')');
+        $column_def = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
+        // replace the decimal length-places-separator with a colon
+        $column_def = preg_replace('/(\d),(\d)/', '\1:\2', $column_def);
+        $column_sql = split(',', $column_def);
+        $columns    = array();
+        $count      = count($column_sql);
+        if ($count == 0) {
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'unexpected empty table column definition list', __FUNCTION__);
+        }
+        $regexp = '/^\s*([^\s]+) +(CHAR|VARCHAR|VARCHAR2|TEXT|BOOLEAN|SMALLINT|INT|INTEGER|DECIMAL|BIGINT|DOUBLE|FLOAT|DATETIME|DATE|TIME|LONGTEXT|LONGBLOB)( ?\(([1-9][0-9]*)(:([1-9][0-9]*))?\))?( UNSIGNED)?( PRIMARY KEY)?( DEFAULT (\'[^\']*\'|[^ ]+))?( NULL| NOT NULL)?( PRIMARY KEY)?$/i';
+        $regexp2 = '/^\s*([^ ]+) +(PRIMARY|UNIQUE|CHECK)$/i';
+        for ($i=0, $j=0; $i<$count; ++$i) {
+            if (!preg_match($regexp, trim($column_sql[$i]), $matches)) {
+                if (!preg_match($regexp2, trim($column_sql[$i]))) {
+                    continue;
+                }
+                return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'unexpected table column SQL definition: "'.$column_sql[$i].'"', __FUNCTION__);
+            }
+            $columns[$j]['name'] = trim($matches[1], implode('', $db->identifier_quoting));
+            $columns[$j]['type'] = strtolower($matches[2]);
+            if (isset($matches[4]) && strlen($matches[4])) {
+                $columns[$j]['length'] = $matches[4];
+            }
+            if (isset($matches[6]) && strlen($matches[6])) {
+                $columns[$j]['decimal'] = $matches[6];
+            }
+            if (isset($matches[7]) && strlen($matches[7])) {
+                $columns[$j]['unsigned'] = true;
+            }
+            if (isset($matches[8]) && strlen($matches[8])) {
+                $columns[$j]['autoincrement'] = true;
+            }
+            if (isset($matches[10]) && strlen($matches[10])) {
+                $default = $matches[10];
+                if (strlen($default) && $default[0]=="'") {
+                    $default = str_replace("''", "'", substr($default, 1, strlen($default)-2));
+                }
+                if ($default === 'NULL') {
+                    $default = null;
+                }
+                $columns[$j]['default'] = $default;
+            }
+            if (isset($matches[11]) && strlen($matches[11])) {
+                $columns[$j]['notnull'] = ($matches[11] === ' NOT NULL');
+            }
+            ++$j;
+        }
+        return $columns;
+    }
+
+    // {{{ getTableFieldDefinition()
+
+    /**
+     * Get the stucture of a field into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $field_name name of field that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure.
+     *          The returned array contains an array for each field definition,
+     *          with (some of) these indices:
+     *          [notnull] [nativetype] [length] [fixed] [default] [type] [mdb2type]
+     * @access public
+     */
+    function getTableFieldDefinition($table_name, $field_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $result = $db->loadModule('Datatype', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(name)='.$db->quote(strtolower($table), 'text');
+        } else {
+            $query.= 'name='.$db->quote($table, 'text');
+        }
+        $sql = $db->queryOne($query);
+        if (PEAR::isError($sql)) {
+            return $sql;
+        }
+        $columns = $this->_getTableColumns($sql);
+        foreach ($columns as $column) {
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $column['name'] = strtolower($column['name']);
+                } else {
+                    $column['name'] = strtoupper($column['name']);
+                }
+            } else {
+                $column = array_change_key_case($column, $db->options['field_case']);
+            }
+            if ($field_name == $column['name']) {
+                $mapped_datatype = $db->datatype->mapNativeDatatype($column);
+                if (PEAR::isError($mapped_datatype)) {
+                    return $mapped_datatype;
+                }
+                list($types, $length, $unsigned, $fixed) = $mapped_datatype;
+                $notnull = false;
+                if (!empty($column['notnull'])) {
+                    $notnull = $column['notnull'];
+                }
+                $default = false;
+                if (array_key_exists('default', $column)) {
+                    $default = $column['default'];
+                    if (is_null($default) && $notnull) {
+                        $default = '';
+                    }
+                }
+                $autoincrement = false;
+                if (!empty($column['autoincrement'])) {
+                    $autoincrement = true;
+                }
+
+                $definition[0] = array(
+                    'notnull' => $notnull,
+                    'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
+                );
+                if (!is_null($length)) {
+                    $definition[0]['length'] = $length;
+                }
+                if (!is_null($unsigned)) {
+                    $definition[0]['unsigned'] = $unsigned;
+                }
+                if (!is_null($fixed)) {
+                    $definition[0]['fixed'] = $fixed;
+                }
+                if ($default !== false) {
+                    $definition[0]['default'] = $default;
+                }
+                if ($autoincrement !== false) {
+                    $definition[0]['autoincrement'] = $autoincrement;
+                }
+                foreach ($types as $key => $type) {
+                    $definition[$key] = $definition[0];
+                    if ($type == 'clob' || $type == 'blob') {
+                        unset($definition[$key]['default']);
+                    }
+                    $definition[$key]['type'] = $type;
+                    $definition[$key]['mdb2type'] = $type;
+                }
+                return $definition;
+            }
+        }
+
+        return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+            'it was not specified an existing table column', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ getTableIndexDefinition()
+
+    /**
+     * Get the stucture of an index into an array
+     *
+     * @param string $table_name name of table that should be used in method
+     * @param string $index_name name of index that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableIndexDefinition($table_name, $index_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(name)=%s AND LOWER(tbl_name)=' . $db->quote(strtolower($table), 'text');
+        } else {
+            $query.= 'name=%s AND tbl_name=' . $db->quote($table, 'text');
+        }
+        $query.= ' AND sql NOT NULL ORDER BY name';
+        $index_name_mdb2 = $db->getIndexName($index_name);
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $qry = sprintf($query, $db->quote(strtolower($index_name_mdb2), 'text'));
+        } else {
+            $qry = sprintf($query, $db->quote($index_name_mdb2, 'text'));
+        }
+        $sql = $db->queryOne($qry, 'text');
+        if (PEAR::isError($sql) || empty($sql)) {
+            // fallback to the given $index_name, without transformation
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                $qry = sprintf($query, $db->quote(strtolower($index_name), 'text'));
+            } else {
+                $qry = sprintf($query, $db->quote($index_name, 'text'));
+            }
+            $sql = $db->queryOne($qry, 'text');
+        }
+        if (PEAR::isError($sql)) {
+            return $sql;
+        }
+        if (!$sql) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'it was not specified an existing table index', __FUNCTION__);
+        }
+
+        $sql = strtolower($sql);
+        $start_pos = strpos($sql, '(');
+        $end_pos = strrpos($sql, ')');
+        $column_names = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
+        $column_names = split(',', $column_names);
+
+        if (preg_match("/^create unique/", $sql)) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'it was not specified an existing table index', __FUNCTION__);
+        }
+
+        $definition = array();
+        $count = count($column_names);
+        for ($i=0; $i<$count; ++$i) {
+            $column_name = strtok($column_names[$i], ' ');
+            $collation = strtok(' ');
+            $definition['fields'][$column_name] = array(
+                'position' => $i+1
+            );
+            if (!empty($collation)) {
+                $definition['fields'][$column_name]['sorting'] =
+                    ($collation=='ASC' ? 'ascending' : 'descending');
+            }
+        }
+
+        if (empty($definition['fields'])) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'it was not specified an existing table index', __FUNCTION__);
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTableConstraintDefinition()
+
+    /**
+     * Get the stucture of a constraint into an array
+     *
+     * @param string $table_name      name of table that should be used in method
+     * @param string $constraint_name name of constraint that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTableConstraintDefinition($table_name, $constraint_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        
+        list($schema, $table) = $this->splitTableSchema($table_name);
+
+        $query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(name)=%s AND LOWER(tbl_name)=' . $db->quote(strtolower($table), 'text');
+        } else {
+            $query.= 'name=%s AND tbl_name=' . $db->quote($table, 'text');
+        }
+        $query.= ' AND sql NOT NULL ORDER BY name';
+        $constraint_name_mdb2 = $db->getIndexName($constraint_name);
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $qry = sprintf($query, $db->quote(strtolower($constraint_name_mdb2), 'text'));
+        } else {
+            $qry = sprintf($query, $db->quote($constraint_name_mdb2, 'text'));
+        }
+        $sql = $db->queryOne($qry, 'text');
+        if (PEAR::isError($sql) || empty($sql)) {
+            // fallback to the given $index_name, without transformation
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                $qry = sprintf($query, $db->quote(strtolower($constraint_name), 'text'));
+            } else {
+                $qry = sprintf($query, $db->quote($constraint_name, 'text'));
+            }
+            $sql = $db->queryOne($qry, 'text');
+        }
+        if (PEAR::isError($sql)) {
+            return $sql;
+        }
+        //default values, eventually overridden
+        $definition = array(
+            'primary' => false,
+            'unique'  => false,
+            'foreign' => false,
+            'check'   => false,
+            'fields'  => array(),
+            'references' => array(
+                'table'  => '',
+                'fields' => array(),
+            ),
+            'onupdate'  => '',
+            'ondelete'  => '',
+            'match'     => '',
+            'deferrable'        => false,
+            'initiallydeferred' => false,
+        );
+        if (!$sql) {
+            $query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                $query.= 'LOWER(name)='.$db->quote(strtolower($table), 'text');
+            } else {
+                $query.= 'name='.$db->quote($table, 'text');
+            }
+            $query.= " AND sql NOT NULL ORDER BY name";
+            $sql = $db->queryOne($query, 'text');
+            if (PEAR::isError($sql)) {
+                return $sql;
+            }
+            if ($constraint_name == 'primary') {
+                // search in table definition for PRIMARY KEYs
+                if (preg_match("/\bPRIMARY\s+KEY\b\s*\(([^)]+)/i", $sql, $tmp)) {
+                    $definition['primary'] = true;
+                    $definition['fields'] = array();
+                    $column_names = split(',', $tmp[1]);
+                    $colpos = 1;
+                    foreach ($column_names as $column_name) {
+                        $definition['fields'][trim($column_name)] = array(
+                            'position' => $colpos++
+                        );
+                    }
+                    return $definition;
+                }
+            } else {
+                // search in table definition for FOREIGN KEYs
+                $pattern = "/\bCONSTRAINT\b\s+%s\s+
+                    \bFOREIGN\s+KEY\b\s*\(([^\)]+)\)\s*
+                    \bREFERENCES\b\s+([^\s]+)\s*\(([^\)]+)\)\s*
+                    (?:\bMATCH\s*([^\s]+))?\s*
+                    (?:\bON\s+UPDATE\s+([^\s,\)]+))?\s*
+                    (?:\bON\s+DELETE\s+([^\s,\)]+))?\s*
+                    /imsx";
+                $found_fk = false;
+                if (preg_match(sprintf($pattern, $constraint_name_mdb2), $sql, $tmp)) {
+                    $found_fk = true;
+                } elseif (preg_match(sprintf($pattern, $constraint_name), $sql, $tmp)) {
+                    $found_fk = true;
+                }
+                if ($found_fk) {
+                    $definition['foreign'] = true;
+                    $definition['match'] = 'SIMPLE';
+                    $definition['onupdate'] = 'NO ACTION';
+                    $definition['ondelete'] = 'NO ACTION';
+                    $definition['references']['table'] = $tmp[2];
+                    $column_names = split(',', $tmp[1]);
+                    $colpos = 1;
+                    foreach ($column_names as $column_name) {
+                        $definition['fields'][trim($column_name)] = array(
+                            'position' => $colpos++
+                        );
+                    }
+                    $referenced_cols = split(',', $tmp[3]);
+                    $colpos = 1;
+                    foreach ($referenced_cols as $column_name) {
+                        $definition['references']['fields'][trim($column_name)] = array(
+                            'position' => $colpos++
+                        );
+                    }
+                    if (isset($tmp[4])) {
+                        $definition['match']    = $tmp[4];
+                    }
+                    if (isset($tmp[5])) {
+                        $definition['onupdate'] = $tmp[5];
+                    }
+                    if (isset($tmp[6])) {
+                        $definition['ondelete'] = $tmp[6];
+                    }
+                    return $definition;
+                }
+            }
+            $sql = false;
+        }
+        if (!$sql) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                $constraint_name . ' is not an existing table constraint', __FUNCTION__);
+        }
+
+        $sql = strtolower($sql);
+        $start_pos = strpos($sql, '(');
+        $end_pos   = strrpos($sql, ')');
+        $column_names = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
+        $column_names = split(',', $column_names);
+
+        if (!preg_match("/^create unique/", $sql)) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                $constraint_name . ' is not an existing table constraint', __FUNCTION__);
+        }
+
+        $definition['unique'] = true;
+        $count = count($column_names);
+        for ($i=0; $i<$count; ++$i) {
+            $column_name = strtok($column_names[$i]," ");
+            $collation = strtok(" ");
+            $definition['fields'][$column_name] = array(
+                'position' => $i+1
+            );
+            if (!empty($collation)) {
+                $definition['fields'][$column_name]['sorting'] =
+                    ($collation=='ASC' ? 'ascending' : 'descending');
+            }
+        }
+
+        if (empty($definition['fields'])) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                $constraint_name . ' is not an existing table constraint', __FUNCTION__);
+        }
+        return $definition;
+    }
+
+    // }}}
+    // {{{ getTriggerDefinition()
+
+    /**
+     * Get the structure of a trigger into an array
+     *
+     * EXPERIMENTAL
+     *
+     * WARNING: this function is experimental and may change the returned value
+     * at any time until labelled as non-experimental
+     *
+     * @param string    $trigger    name of trigger that should be used in method
+     * @return mixed data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function getTriggerDefinition($trigger)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name as trigger_name,
+                         tbl_name AS table_name,
+                         sql AS trigger_body,
+                         NULL AS trigger_type,
+                         NULL AS trigger_event,
+                         NULL AS trigger_comment,
+                         1 AS trigger_enabled
+                    FROM sqlite_master
+                   WHERE type='trigger'";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= ' AND LOWER(name)='.$db->quote(strtolower($trigger), 'text');
+        } else {
+            $query.= ' AND name='.$db->quote($trigger, 'text');
+        }
+        $types = array(
+            'trigger_name'    => 'text',
+            'table_name'      => 'text',
+            'trigger_body'    => 'text',
+            'trigger_type'    => 'text',
+            'trigger_event'   => 'text',
+            'trigger_comment' => 'text',
+            'trigger_enabled' => 'boolean',
+        );
+        $def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($def)) {
+            return $def;
+        }
+        if (empty($def)) {
+            return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'it was not specified an existing trigger', __FUNCTION__);
+        }
+        if (preg_match("/^create\s+(?:temp|temporary)?trigger\s+(?:if\s+not\s+exists\s+)?.*(before|after)?\s+(insert|update|delete)/Uims", $def['trigger_body'], $tmp)) {
+            $def['trigger_type'] = strtoupper($tmp[1]);
+            $def['trigger_event'] = strtoupper($tmp[2]);
+        }
+        return $def;
+    }
+
+    // }}}
+    // {{{ tableInfo()
+
+    /**
+     * Returns information about a table
+     *
+     * @param string         $result  a string containing the name of a table
+     * @param int            $mode    a valid tableInfo mode
+     *
+     * @return array  an associative array with the information requested.
+     *                 A MDB2_Error object on failure.
+     *
+     * @see MDB2_Driver_Common::tableInfo()
+     * @since Method available since Release 1.7.0
+     */
+    function tableInfo($result, $mode = null)
+    {
+        if (is_string($result)) {
+           return parent::tableInfo($result, $mode);
+        }
+
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_NOT_CAPABLE, null, null,
+           'This DBMS can not obtain tableInfo from result sets', __FUNCTION__);
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/mssql.php b/program/lib/MDB2/Driver/mssql.php
new file mode 100644
index 0000000..f74acfe
--- /dev/null
+++ b/program/lib/MDB2/Driver/mssql.php
@@ -0,0 +1,1010 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith, Frank M. Kromann                       |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Frank M. Kromann <frank@kromann.info>                        |
+// +----------------------------------------------------------------------+
+//
+// $Id: mssql.php,v 1.161 2007/11/18 17:52:00 quipo Exp $
+//
+// {{{ Class MDB2_Driver_mssql
+/**
+ * MDB2 MSSQL Server driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Frank M. Kromann <frank@kromann.info>
+ */
+class MDB2_Driver_mssql extends MDB2_Driver_Common
+{
+    // {{{ properties
+
+    var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => false);
+
+    var $identifier_quoting = array('start' => '[', 'end' => ']', 'escape' => ']');
+
+    // }}}
+    // {{{ constructor
+
+    /**
+     * Constructor
+     */
+    function __construct()
+    {
+        parent::__construct();
+
+        $this->phptype = 'mssql';
+        $this->dbsyntax = 'mssql';
+
+        $this->supported['sequences'] = 'emulated';
+        $this->supported['indexes'] = true;
+        $this->supported['affected_rows'] = true;
+        $this->supported['transactions'] = true;
+        $this->supported['savepoints'] = false;
+        $this->supported['summary_functions'] = true;
+        $this->supported['order_by_text'] = true;
+        $this->supported['current_id'] = 'emulated';
+        $this->supported['limit_queries'] = 'emulated';
+        $this->supported['LOBs'] = true;
+        $this->supported['replace'] = 'emulated';
+        $this->supported['sub_selects'] = true;
+        $this->supported['auto_increment'] = true;
+        $this->supported['primary_key'] = true;
+        $this->supported['result_introspection'] = true;
+        $this->supported['prepared_statements'] = 'emulated';
+        $this->supported['pattern_escaping'] = true;
+        $this->supported['new_link'] = true;
+
+        $this->options['database_device'] = false;
+        $this->options['database_size'] = false;
+    }
+
+    // }}}
+    // {{{ errorInfo()
+
+    /**
+     * This method is used to collect information about an error
+     *
+     * @param integer $error
+     * @return array
+     * @access public
+     */
+    function errorInfo($error = null)
+    {
+        $native_code = null;
+        if ($this->connection) {
+            $result = @mssql_query('select @@ERROR as ErrorCode', $this->connection);
+            if ($result) {
+                $native_code = @mssql_result($result, 0, 0);
+                @mssql_free_result($result);
+            }
+        }
+        $native_msg = @mssql_get_last_message();
+        if (is_null($error)) {
+            static $ecode_map;
+            if (empty($ecode_map)) {
+                $ecode_map = array(
+                    102   => MDB2_ERROR_SYNTAX,
+                    110   => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+                    155   => MDB2_ERROR_NOSUCHFIELD,
+                    156   => MDB2_ERROR_SYNTAX,
+                    170   => MDB2_ERROR_SYNTAX,
+                    207   => MDB2_ERROR_NOSUCHFIELD,
+                    208   => MDB2_ERROR_NOSUCHTABLE,
+                    245   => MDB2_ERROR_INVALID_NUMBER,
+                    319   => MDB2_ERROR_SYNTAX,
+                    321   => MDB2_ERROR_NOSUCHFIELD,
+                    325   => MDB2_ERROR_SYNTAX,
+                    336   => MDB2_ERROR_SYNTAX,
+                    515   => MDB2_ERROR_CONSTRAINT_NOT_NULL,
+                    547   => MDB2_ERROR_CONSTRAINT,
+                    1018  => MDB2_ERROR_SYNTAX,
+                    1035  => MDB2_ERROR_SYNTAX,
+                    1913  => MDB2_ERROR_ALREADY_EXISTS,
+                    2209  => MDB2_ERROR_SYNTAX,
+                    2223  => MDB2_ERROR_SYNTAX,
+                    2248  => MDB2_ERROR_SYNTAX,
+                    2256  => MDB2_ERROR_SYNTAX,
+                    2257  => MDB2_ERROR_SYNTAX,
+                    2627  => MDB2_ERROR_CONSTRAINT,
+                    2714  => MDB2_ERROR_ALREADY_EXISTS,
+                    3607  => MDB2_ERROR_DIVZERO,
+                    3701  => MDB2_ERROR_NOSUCHTABLE,
+                    7630  => MDB2_ERROR_SYNTAX,
+                    8134  => MDB2_ERROR_DIVZERO,
+                    9303  => MDB2_ERROR_SYNTAX,
+                    9317  => MDB2_ERROR_SYNTAX,
+                    9318  => MDB2_ERROR_SYNTAX,
+                    9331  => MDB2_ERROR_SYNTAX,
+                    9332  => MDB2_ERROR_SYNTAX,
+                    15253 => MDB2_ERROR_SYNTAX,
+                );
+            }
+            if (isset($ecode_map[$native_code])) {
+                if ($native_code == 3701
+                    && preg_match('/Cannot drop the index/i', $native_msg)
+                ) {
+                   $error = MDB2_ERROR_NOT_FOUND;
+                } else {
+                    $error = $ecode_map[$native_code];
+                }
+            }
+        }
+        return array($error, $native_code, $native_msg);
+    }
+
+    // }}}
+    // {{{ function escapePattern($text)
+
+    /**
+     * Quotes pattern (% and _) characters in a string)
+     *
+     * @param   string  the input string to quote
+     *
+     * @return  string  quoted string
+     *
+     * @access  public
+     */
+    function escapePattern($text)
+    {
+        $text = str_replace("[", "[ [ ]", $text);
+        foreach ($this->wildcards as $wildcard) {
+            $text = str_replace($wildcard, '[' . $wildcard . ']', $text);
+        }
+        return $text;
+    }
+
+    // }}}
+    // {{{ beginTransaction()
+
+    /**
+     * Start a transaction or set a savepoint.
+     *
+     * @param   string  name of a savepoint to set
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function beginTransaction($savepoint = null)
+    {
+        $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!is_null($savepoint)) {
+            if (!$this->in_transaction) {
+                return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                    'savepoint cannot be released when changes are auto committed', __FUNCTION__);
+            }
+            $query = 'SAVE TRANSACTION '.$savepoint;
+            return $this->_doQuery($query, true);
+        } elseif ($this->in_transaction) {
+            return MDB2_OK;  //nothing to do
+        }
+        if (!$this->destructor_registered && $this->opened_persistent) {
+            $this->destructor_registered = true;
+            register_shutdown_function('MDB2_closeOpenTransactions');
+        }
+        $result =& $this->_doQuery('BEGIN TRANSACTION', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = true;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ commit()
+
+    /**
+     * Commit the database changes done during a transaction that is in
+     * progress or release a savepoint. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after committing the pending changes.
+     *
+     * @param   string  name of a savepoint to release
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function commit($savepoint = null)
+    {
+        $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            return MDB2_OK;
+        }
+
+        $result =& $this->_doQuery('COMMIT TRANSACTION', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ rollback()
+
+    /**
+     * Cancel any database changes done during a transaction or since a specific
+     * savepoint that is in progress. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after canceling the pending changes.
+     *
+     * @param   string  name of a savepoint to rollback to
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function rollback($savepoint = null)
+    {
+        $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'rollback cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            $query = 'ROLLBACK TRANSACTION '.$savepoint;
+            return $this->_doQuery($query, true);
+        }
+
+        $result =& $this->_doQuery('ROLLBACK TRANSACTION', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ connect()
+
+    /**
+     * Connect to the database
+     *
+     * @return true on success, MDB2 Error Object on failure
+     */
+    function connect()
+    {
+        if (is_resource($this->connection)) {
+            //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
+            if (MDB2::areEquals($this->connected_dsn, $this->dsn)
+                && $this->opened_persistent == $this->options['persistent']
+            ) {
+                return MDB2_OK;
+            }
+            $this->disconnect(false);
+        }
+
+        if (!PEAR::loadExtension($this->phptype)) {
+            return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
+        }
+
+        $params = array(
+            $this->dsn['hostspec'] ? $this->dsn['hostspec'] : 'localhost',
+            $this->dsn['username'] ? $this->dsn['username'] : null,
+            $this->dsn['password'] ? $this->dsn['password'] : null,
+        );
+        if ($this->dsn['port']) {
+            $params[0].= ((substr(PHP_OS, 0, 3) == 'WIN') ? ',' : ':').$this->dsn['port'];
+        }
+        if (!$this->options['persistent']) {
+            if (isset($this->dsn['new_link'])
+                && ($this->dsn['new_link'] == 'true' || $this->dsn['new_link'] === true)
+            ) {
+                $params[] = true;
+            } else {
+                $params[] = false;
+            }
+        }
+
+        $connect_function = $this->options['persistent'] ? 'mssql_pconnect' : 'mssql_connect';
+
+        $connection = @call_user_func_array($connect_function, $params);
+        if ($connection <= 0) {
+            return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
+                'unable to establish a connection', __FUNCTION__, __FUNCTION__);
+        }
+
+        if (!empty($this->dsn['charset'])) {
+            $result = $this->setCharset($this->dsn['charset'], $connection);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+
+       if ((bool)ini_get('mssql.datetimeconvert')) {
+           @ini_set('mssql.datetimeconvert', '0');
+       }
+
+       if (empty($this->dsn['disable_iso_date'])) {
+           @mssql_query('SET DATEFORMAT ymd', $connection);
+       }
+
+        $this->connection = $connection;
+        $this->connected_dsn = $this->dsn;
+        $this->connected_database_name = '';
+        $this->opened_persistent = $this->options['persistent'];
+        $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
+
+        if ($this->database_name) {
+            if ($this->database_name != $this->connected_database_name) {
+                if (!@mssql_select_db($this->database_name, $connection)) {
+                    $err = $this->raiseError(null, null, null,
+                        'Could not select the database: '.$this->database_name, __FUNCTION__);
+                    return $err;
+                }
+                $this->connected_database_name = $this->database_name;
+            }
+        }
+
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ disconnect()
+
+    /**
+     * Log out and disconnect from the database.
+     *
+     * @param  boolean $force if the disconnect should be forced even if the
+     *                        connection is opened persistently
+     * @return mixed true on success, false if not connected and error
+     *                object on error
+     * @access public
+     */
+    function disconnect($force = true)
+    {
+        if (is_resource($this->connection)) {
+            if ($this->in_transaction) {
+                $dsn = $this->dsn;
+                $database_name = $this->database_name;
+                $persistent = $this->options['persistent'];
+                $this->dsn = $this->connected_dsn;
+                $this->database_name = $this->connected_database_name;
+                $this->options['persistent'] = $this->opened_persistent;
+                $this->rollback();
+                $this->dsn = $dsn;
+                $this->database_name = $database_name;
+                $this->options['persistent'] = $persistent;
+            }
+
+            if (!$this->opened_persistent || $force) {
+                @mssql_close($this->connection);
+            }
+        }
+        return parent::disconnect($force);
+    }
+
+    // }}}
+    // {{{ _doQuery()
+
+    /**
+     * Execute a query
+     * @param string $query  query
+     * @param boolean $is_manip  if the query is a manipulation query
+     * @param resource $connection
+     * @param string $database_name
+     * @return result or error object
+     * @access protected
+     */
+    function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
+    {
+        $this->last_query = $query;
+        $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        if ($this->options['disable_query']) {
+            $result = $is_manip ? 0 : null;
+            return $result;
+        }
+
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        if (is_null($database_name)) {
+            $database_name = $this->database_name;
+        }
+
+        if ($database_name) {
+            if ($database_name != $this->connected_database_name) {
+                if (!@mssql_select_db($database_name, $connection)) {
+                    $err = $this->raiseError(null, null, null,
+                        'Could not select the database: '.$database_name, __FUNCTION__);
+                    return $err;
+                }
+                $this->connected_database_name = $database_name;
+            }
+        }
+
+        $result = @mssql_query($query, $connection);
+        if (!$result) {
+            $err =& $this->raiseError(null, null, null,
+                'Could not execute statement', __FUNCTION__);
+            return $err;
+        }
+
+        $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
+        return $result;
+    }
+
+    // }}}
+    // {{{ _affectedRows()
+
+    /**
+     * Returns the number of rows affected
+     *
+     * @param resource $result
+     * @param resource $connection
+     * @return mixed MDB2 Error Object or the number of rows affected
+     * @access private
+     */
+    function _affectedRows($connection, $result = null)
+    {
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        return @mssql_rows_affected($connection);
+    }
+
+    // }}}
+    // {{{ _modifyQuery()
+
+    /**
+     * Changes a query string for various DBMS specific reasons
+     *
+     * @param string $query  query to modify
+     * @param boolean $is_manip  if it is a DML query
+     * @param integer $limit  limit the number of rows
+     * @param integer $offset  start reading from given offset
+     * @return string modified query
+     * @access protected
+     */
+    function _modifyQuery($query, $is_manip, $limit, $offset)
+    {
+        if ($limit > 0) {
+            $fetch = $offset + $limit;
+            if (!$is_manip) {
+                return preg_replace('/^([\s(])*SELECT( DISTINCT)?(?!\s*TOP\s*\()/i',
+                    "\\1SELECT\\2 TOP $fetch", $query);
+            }
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ getServerVersion()
+
+    /**
+     * return version information about the server
+     *
+     * @param bool   $native  determines if the raw version string should be returned
+     * @return mixed array/string with version information or MDB2 error object
+     * @access public
+     */
+    function getServerVersion($native = false)
+    {
+        if ($this->connected_server_info) {
+            $server_info = $this->connected_server_info;
+        } else {
+            $query = 'SELECT @@VERSION';
+            $server_info = $this->queryOne($query, 'text');
+            if (PEAR::isError($server_info)) {
+                return $server_info;
+            }
+        }
+        // cache server_info
+        $this->connected_server_info = $server_info;
+        if (!$native && !PEAR::isError($server_info)) {
+            if (preg_match('/([0-9]+)\.([0-9]+)\.([0-9]+)/', $server_info, $tmp)) {
+                $server_info = array(
+                    'major' => $tmp[1],
+                    'minor' => $tmp[2],
+                    'patch' => $tmp[3],
+                    'extra' => null,
+                    'native' => $server_info,
+                );
+            } else {
+                $server_info = array(
+                    'major' => null,
+                    'minor' => null,
+                    'patch' => null,
+                    'extra' => null,
+                    'native' => $server_info,
+                );
+            }
+        }
+        return $server_info;
+    }
+
+    // }}}
+    // {{{ _checkSequence
+
+    /**
+     * Checks if there's a sequence that exists.
+     *
+     * @param  string $seq_name    The sequence name to verify.
+     * @return bool   $tableExists The value if the table exists or not
+     * @access private
+     */
+    function _checkSequence($seq_name)
+    {
+        $query = "SELECT * FROM $seq_name";
+        $tableExists =& $this->_doQuery($query, true);
+        if (PEAR::isError($tableExists)) {
+            if ($tableExists->getCode() == MDB2_ERROR_NOSUCHTABLE) {
+                return false;
+            }
+            //return $tableExists;
+            return false;
+        }
+        return mssql_result($tableExists, 0, 0);
+    }
+
+    // }}}
+    // {{{ nextID()
+
+    /**
+     * Returns the next free id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @param boolean $ondemand when true the sequence is
+     *                          automatic created, if it
+     *                          not exists
+     *
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function nextID($seq_name, $ondemand = true)
+    {
+        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+        $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
+        $this->expectError(MDB2_ERROR_NOSUCHTABLE);
+        
+        $seq_val = $this->_checkSequence($sequence_name);
+
+        if ($seq_val) {
+            $query = "SET IDENTITY_INSERT $sequence_name OFF ".
+                     "INSERT INTO $sequence_name DEFAULT VALUES";
+        } else {
+            $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (0)";
+        }
+        $result =& $this->_doQuery($query, true);
+        $this->popExpect();
+        if (PEAR::isError($result)) {
+            if ($ondemand && !$this->_checkSequence($sequence_name)) {
+                $this->loadModule('Manager', null, true);
+                $result = $this->manager->createSequence($seq_name);
+                if (PEAR::isError($result)) {
+                    return $this->raiseError($result, null, null,
+                        'on demand sequence '.$seq_name.' could not be created', __FUNCTION__);
+                } else {
+                    /**
+                     * Little off-by-one problem with the sequence emulation
+                     * here being fixed, that instead of re-calling nextID
+                     * and forcing an increment by one, we simply check if it
+                     * exists, then we get the last inserted id if it does.
+                     *
+                     * In theory, $seq_name should be created otherwise there would
+                     * have been an error thrown somewhere up there.. 
+                     *
+                     * @todo confirm
+                     */
+                    if ($this->_checkSequence($seq_name)) {
+                        return $this->lastInsertID($seq_name);
+                    }
+
+                    return $this->nextID($seq_name, false);
+                }
+            }
+            return $result;
+        }
+        $value = $this->lastInsertID($sequence_name);
+        if (is_numeric($value)) {
+            $query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value";
+            $result =& $this->_doQuery($query, true);
+            if (PEAR::isError($result)) {
+                $this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
+            }
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ lastInsertID()
+
+    /**
+     * Returns the autoincrement ID if supported or $id or fetches the current
+     * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
+     *
+     * @param string $table name of the table into which a new row was inserted
+     * @param string $field name of the field into which a new row was inserted
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function lastInsertID($table = null, $field = null)
+    {
+        $server_info = $this->getServerVersion();
+        if (is_array($server_info) && !is_null($server_info['major'])
+           && $server_info['major'] >= 8
+        ) {
+            $query = "SELECT SCOPE_IDENTITY()";
+        } else {
+            $query = "SELECT @@IDENTITY";
+        }
+
+        return $this->queryOne($query, 'integer');
+    }
+
+    // }}}
+}
+
+// }}}
+// {{{ Class MDB2_Result_mssql
+
+/**
+ * MDB2 MSSQL Server result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Frank M. Kromann <frank@kromann.info>
+ */
+class MDB2_Result_mssql extends MDB2_Result_Common
+{
+    // {{{ _skipLimitOffset()
+
+    /**
+     * Skip the first row of a result set.
+     *
+     * @param resource $result
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access protected
+     */
+    function _skipLimitOffset()
+    {
+        if ($this->limit) {
+            if ($this->rownum >= $this->limit) {
+                return false;
+            }
+        }
+        if ($this->offset) {
+            while ($this->offset_count < $this->offset) {
+                ++$this->offset_count;
+                if (!is_array(@mssql_fetch_row($this->result))) {
+                    $this->offset_count = $this->limit;
+                    return false;
+                }
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ fetchRow()
+
+    /**
+     * Fetch a row and insert the data into an existing array.
+     *
+     * @param int       $fetchmode  how the array data should be indexed
+     * @param int    $rownum    number of the row where the data can be found
+     * @return int data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+    {
+        if (!$this->_skipLimitOffset()) {
+            $null = null;
+            return $null;
+        }
+        if (!is_null($rownum)) {
+            $seek = $this->seek($rownum);
+            if (PEAR::isError($seek)) {
+                return $seek;
+            }
+        }
+        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
+            $fetchmode = $this->db->fetchmode;
+        }
+        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+            $row = @mssql_fetch_assoc($this->result);
+            if (is_array($row)
+                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+            ) {
+                $row = array_change_key_case($row, $this->db->options['field_case']);
+            }
+        } else {
+            $row = @mssql_fetch_row($this->result);
+        }
+        if (!$row) {
+            if ($this->result === false) {
+                $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+                return $err;
+            }
+            $null = null;
+            return $null;
+        }
+        $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
+        $rtrim = false;
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
+            if (empty($this->types)) {
+                $mode += MDB2_PORTABILITY_RTRIM;
+            } else {
+                $rtrim = true;
+            }
+        }
+        if ($mode) {
+            $this->db->_fixResultArrayValues($row, $mode);
+        }
+        if (!empty($this->types)) {
+            $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
+        }
+        if (!empty($this->values)) {
+            $this->_assignBindColumns($row);
+        }
+        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
+            $object_class = $this->db->options['fetch_class'];
+            if ($object_class == 'stdClass') {
+                $row = (object) $row;
+            } else {
+                $row = &new $object_class($row);
+            }
+        }
+        ++$this->rownum;
+        return $row;
+    }
+
+    // }}}
+    // {{{ _getColumnNames()
+
+    /**
+     * Retrieve the names of columns returned by the DBMS in a query result.
+     *
+     * @return  mixed   Array variable that holds the names of columns as keys
+     *                  or an MDB2 error on failure.
+     *                  Some DBMS may not return any columns when the result set
+     *                  does not contain any rows.
+     * @access private
+     */
+    function _getColumnNames()
+    {
+        $columns = array();
+        $numcols = $this->numCols();
+        if (PEAR::isError($numcols)) {
+            return $numcols;
+        }
+        for ($column = 0; $column < $numcols; $column++) {
+            $column_name = @mssql_field_name($this->result, $column);
+            $columns[$column_name] = $column;
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $columns = array_change_key_case($columns, $this->db->options['field_case']);
+        }
+        return $columns;
+    }
+
+    // }}}
+    // {{{ numCols()
+
+    /**
+     * Count the number of columns returned by the DBMS in a query result.
+     *
+     * @return mixed integer value with the number of columns, a MDB2 error
+     *      on failure
+     * @access public
+     */
+    function numCols()
+    {
+        $cols = @mssql_num_fields($this->result);
+        if (is_null($cols)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return count($this->types);
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get column count', __FUNCTION__);
+        }
+        return $cols;
+    }
+
+    // }}}
+    // {{{ nextResult()
+
+    /**
+     * Move the internal result pointer to the next available result
+     *
+     * @return true on success, false if there is no more result set or an error object on failure
+     * @access public
+     */
+    function nextResult()
+    {
+        if ($this->result === false) {
+            return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'resultset has already been freed', __FUNCTION__);
+        } elseif (is_null($this->result)) {
+            return false;
+        }
+        return @mssql_next_result($this->result);
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Free the internal resources associated with $result.
+     *
+     * @return boolean true on success, false if $result is invalid
+     * @access public
+     */
+    function free()
+    {
+        if (is_resource($this->result) && $this->db->connection) {
+            $free = @mssql_free_result($this->result);
+            if ($free === false) {
+                return $this->db->raiseError(null, null, null,
+                    'Could not free result', __FUNCTION__);
+            }
+        }
+        $this->result = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+}
+
+// }}}
+// {{{ class MDB2_BufferedResult_mssql
+
+/**
+ * MDB2 MSSQL Server buffered result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Frank M. Kromann <frank@kromann.info>
+ */
+class MDB2_BufferedResult_mssql extends MDB2_Result_mssql
+{
+    // {{{ seek()
+
+    /**
+     * Seek to a specific row in a result set
+     *
+     * @param int    $rownum    number of the row where the data can be found
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function seek($rownum = 0)
+    {
+        if ($this->rownum != ($rownum - 1) && !@mssql_data_seek($this->result, $rownum)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return MDB2_OK;
+            }
+            return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
+                'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
+        }
+        $this->rownum = $rownum - 1;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ valid()
+
+    /**
+     * Check if the end of the result set has been reached
+     *
+     * @return mixed true or false on sucess, a MDB2 error on failure
+     * @access public
+     */
+    function valid()
+    {
+        $numrows = $this->numRows();
+        if (PEAR::isError($numrows)) {
+            return $numrows;
+        }
+        return $this->rownum < ($numrows - 1);
+    }
+
+    // }}}
+    // {{{ numRows()
+
+    /**
+     * Returns the number of rows in a result object
+     *
+     * @return mixed MDB2 Error Object or the number of rows
+     * @access public
+     */
+    function numRows()
+    {
+        $rows = @mssql_num_rows($this->result);
+        if (is_null($rows)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return 0;
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get row count', __FUNCTION__);
+        }
+        if ($this->limit) {
+            $rows -= $this->limit -1 + $this->offset;
+            if ($rows < 0) {
+                $rows = 0;
+            }
+        }
+        return $rows;
+    }
+}
+
+// }}}
+// {{{ MDB2_Statement_mssql
+
+/**
+ * MDB2 MSSQL Server statement driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Frank M. Kromann <frank@kromann.info>
+ */
+class MDB2_Statement_mssql extends MDB2_Statement_Common
+{
+
+}
+
+// }}}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/mysql.php b/program/lib/MDB2/Driver/mysql.php
new file mode 100644
index 0000000..1e04539
--- /dev/null
+++ b/program/lib/MDB2/Driver/mysql.php
@@ -0,0 +1,1535 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysql.php,v 1.195 2007/11/10 13:27:03 quipo Exp $
+//
+
+/**
+ * MDB2 MySQL driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_mysql extends MDB2_Driver_Common
+{
+    // {{{ properties
+
+    var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => '\\', 'escape_pattern' => '\\');
+
+    var $identifier_quoting = array('start' => '`', 'end' => '`', 'escape' => '`');
+
+    var $sql_comments = array(
+        array('start' => '-- ', 'end' => "\n", 'escape' => false),
+        array('start' => '#', 'end' => "\n", 'escape' => false),
+        array('start' => '/*', 'end' => '*/', 'escape' => false),
+    );
+
+    var $server_capabilities_checked = false;
+
+    var $start_transaction = false;
+
+    var $varchar_max_length = 255;
+
+    // }}}
+    // {{{ constructor
+
+    /**
+     * Constructor
+     */
+    function __construct()
+    {
+        parent::__construct();
+
+        $this->phptype = 'mysql';
+        $this->dbsyntax = 'mysql';
+
+        $this->supported['sequences'] = 'emulated';
+        $this->supported['indexes'] = true;
+        $this->supported['affected_rows'] = true;
+        $this->supported['transactions'] = false;
+        $this->supported['savepoints'] = false;
+        $this->supported['summary_functions'] = true;
+        $this->supported['order_by_text'] = true;
+        $this->supported['current_id'] = 'emulated';
+        $this->supported['limit_queries'] = true;
+        $this->supported['LOBs'] = true;
+        $this->supported['replace'] = true;
+        $this->supported['sub_selects'] = 'emulated';
+        $this->supported['auto_increment'] = true;
+        $this->supported['primary_key'] = true;
+        $this->supported['result_introspection'] = true;
+        $this->supported['prepared_statements'] = 'emulated';
+        $this->supported['identifier_quoting'] = true;
+        $this->supported['pattern_escaping'] = true;
+        $this->supported['new_link'] = true;
+
+        $this->options['default_table_type'] = '';
+    }
+
+    // }}}
+    // {{{ errorInfo()
+
+    /**
+     * This method is used to collect information about an error
+     *
+     * @param integer $error
+     * @return array
+     * @access public
+     */
+    function errorInfo($error = null)
+    {
+        if ($this->connection) {
+            $native_code = @mysql_errno($this->connection);
+            $native_msg  = @mysql_error($this->connection);
+        } else {
+            $native_code = @mysql_errno();
+            $native_msg  = @mysql_error();
+        }
+        if (is_null($error)) {
+            static $ecode_map;
+            if (empty($ecode_map)) {
+                $ecode_map = array(
+                    1000 => MDB2_ERROR_INVALID, //hashchk
+                    1001 => MDB2_ERROR_INVALID, //isamchk
+                    1004 => MDB2_ERROR_CANNOT_CREATE,
+                    1005 => MDB2_ERROR_CANNOT_CREATE,
+                    1006 => MDB2_ERROR_CANNOT_CREATE,
+                    1007 => MDB2_ERROR_ALREADY_EXISTS,
+                    1008 => MDB2_ERROR_CANNOT_DROP,
+                    1009 => MDB2_ERROR_CANNOT_DROP,
+                    1010 => MDB2_ERROR_CANNOT_DROP,
+                    1011 => MDB2_ERROR_CANNOT_DELETE,
+                    1022 => MDB2_ERROR_ALREADY_EXISTS,
+                    1029 => MDB2_ERROR_NOT_FOUND,
+                    1032 => MDB2_ERROR_NOT_FOUND,
+                    1044 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1045 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1046 => MDB2_ERROR_NODBSELECTED,
+                    1048 => MDB2_ERROR_CONSTRAINT,
+                    1049 => MDB2_ERROR_NOSUCHDB,
+                    1050 => MDB2_ERROR_ALREADY_EXISTS,
+                    1051 => MDB2_ERROR_NOSUCHTABLE,
+                    1054 => MDB2_ERROR_NOSUCHFIELD,
+                    1060 => MDB2_ERROR_ALREADY_EXISTS,
+                    1061 => MDB2_ERROR_ALREADY_EXISTS,
+                    1062 => MDB2_ERROR_ALREADY_EXISTS,
+                    1064 => MDB2_ERROR_SYNTAX,
+                    1067 => MDB2_ERROR_INVALID,
+                    1072 => MDB2_ERROR_NOT_FOUND,
+                    1086 => MDB2_ERROR_ALREADY_EXISTS,
+                    1091 => MDB2_ERROR_NOT_FOUND,
+                    1100 => MDB2_ERROR_NOT_LOCKED,
+                    1109 => MDB2_ERROR_NOT_FOUND,
+                    1125 => MDB2_ERROR_ALREADY_EXISTS,
+                    1136 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+                    1138 => MDB2_ERROR_INVALID,
+                    1142 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1143 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1146 => MDB2_ERROR_NOSUCHTABLE,
+                    1149 => MDB2_ERROR_SYNTAX,
+                    1169 => MDB2_ERROR_CONSTRAINT,
+                    1176 => MDB2_ERROR_NOT_FOUND,
+                    1177 => MDB2_ERROR_NOSUCHTABLE,
+                    1213 => MDB2_ERROR_DEADLOCK,
+                    1216 => MDB2_ERROR_CONSTRAINT,
+                    1217 => MDB2_ERROR_CONSTRAINT,
+                    1227 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1299 => MDB2_ERROR_INVALID_DATE,
+                    1300 => MDB2_ERROR_INVALID,
+                    1304 => MDB2_ERROR_ALREADY_EXISTS,
+                    1305 => MDB2_ERROR_NOT_FOUND,
+                    1306 => MDB2_ERROR_CANNOT_DROP,
+                    1307 => MDB2_ERROR_CANNOT_CREATE,
+                    1334 => MDB2_ERROR_CANNOT_ALTER,
+                    1339 => MDB2_ERROR_NOT_FOUND,
+                    1356 => MDB2_ERROR_INVALID,
+                    1359 => MDB2_ERROR_ALREADY_EXISTS,
+                    1360 => MDB2_ERROR_NOT_FOUND,
+                    1363 => MDB2_ERROR_NOT_FOUND,
+                    1365 => MDB2_ERROR_DIVZERO,
+                    1451 => MDB2_ERROR_CONSTRAINT,
+                    1452 => MDB2_ERROR_CONSTRAINT,
+                    1542 => MDB2_ERROR_CANNOT_DROP,
+                    1546 => MDB2_ERROR_CONSTRAINT,
+                    1582 => MDB2_ERROR_CONSTRAINT,
+                );
+            }
+            if ($this->options['portability'] & MDB2_PORTABILITY_ERRORS) {
+                $ecode_map[1022] = MDB2_ERROR_CONSTRAINT;
+                $ecode_map[1048] = MDB2_ERROR_CONSTRAINT_NOT_NULL;
+                $ecode_map[1062] = MDB2_ERROR_CONSTRAINT;
+            } else {
+                // Doing this in case mode changes during runtime.
+                $ecode_map[1022] = MDB2_ERROR_ALREADY_EXISTS;
+                $ecode_map[1048] = MDB2_ERROR_CONSTRAINT;
+                $ecode_map[1062] = MDB2_ERROR_ALREADY_EXISTS;
+            }
+            if (isset($ecode_map[$native_code])) {
+                $error = $ecode_map[$native_code];
+            }
+        }
+        return array($error, $native_code, $native_msg);
+    }
+
+    // }}}
+    // {{{ escape()
+
+    /**
+     * Quotes a string so it can be safely used in a query. It will quote
+     * the text so it can safely be used within a query.
+     *
+     * @param   string  the input string to quote
+     * @param   bool    escape wildcards
+     *
+     * @return  string  quoted string
+     *
+     * @access  public
+     */
+    function escape($text, $escape_wildcards = false)
+    {
+        if ($escape_wildcards) {
+            $text = $this->escapePattern($text);
+        }
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+        $text = @mysql_real_escape_string($text, $connection);
+        return $text;
+    }
+
+    // }}}
+    // {{{ beginTransaction()
+
+    /**
+     * Start a transaction or set a savepoint.
+     *
+     * @param   string  name of a savepoint to set
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function beginTransaction($savepoint = null)
+    {
+        $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        $this->_getServerCapabilities();
+        if (!is_null($savepoint)) {
+            if (!$this->supports('savepoints')) {
+                return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'savepoints are not supported', __FUNCTION__);
+            }
+            if (!$this->in_transaction) {
+                return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                    'savepoint cannot be released when changes are auto committed', __FUNCTION__);
+            }
+            $query = 'SAVEPOINT '.$savepoint;
+            return $this->_doQuery($query, true);
+        } elseif ($this->in_transaction) {
+            return MDB2_OK;  //nothing to do
+        }
+        if (!$this->destructor_registered && $this->opened_persistent) {
+            $this->destructor_registered = true;
+            register_shutdown_function('MDB2_closeOpenTransactions');
+        }
+        $query = $this->start_transaction ? 'START TRANSACTION' : 'SET AUTOCOMMIT = 1';
+        $result =& $this->_doQuery($query, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = true;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ commit()
+
+    /**
+     * Commit the database changes done during a transaction that is in
+     * progress or release a savepoint. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after committing the pending changes.
+     *
+     * @param   string  name of a savepoint to release
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function commit($savepoint = null)
+    {
+        $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            if (!$this->supports('savepoints')) {
+                return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'savepoints are not supported', __FUNCTION__);
+            }
+            $server_info = $this->getServerVersion();
+            if (version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '5.0.3', '<')) {
+                return MDB2_OK;
+            }
+            $query = 'RELEASE SAVEPOINT '.$savepoint;
+            return $this->_doQuery($query, true);
+        }
+
+        if (!$this->supports('transactions')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'transactions are not supported', __FUNCTION__);
+        }
+
+        $result =& $this->_doQuery('COMMIT', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if (!$this->start_transaction) {
+            $query = 'SET AUTOCOMMIT = 0';
+            $result =& $this->_doQuery($query, true);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ rollback()
+
+    /**
+     * Cancel any database changes done during a transaction or since a specific
+     * savepoint that is in progress. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after canceling the pending changes.
+     *
+     * @param   string  name of a savepoint to rollback to
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function rollback($savepoint = null)
+    {
+        $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'rollback cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            if (!$this->supports('savepoints')) {
+                return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'savepoints are not supported', __FUNCTION__);
+            }
+            $query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
+            return $this->_doQuery($query, true);
+        }
+
+        $query = 'ROLLBACK';
+        $result =& $this->_doQuery($query, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if (!$this->start_transaction) {
+            $query = 'SET AUTOCOMMIT = 0';
+            $result =& $this->_doQuery($query, true);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function setTransactionIsolation()
+
+    /**
+     * Set the transacton isolation level.
+     *
+     * @param   string  standard isolation level
+     *                  READ UNCOMMITTED (allows dirty reads)
+     *                  READ COMMITTED (prevents dirty reads)
+     *                  REPEATABLE READ (prevents nonrepeatable reads)
+     *                  SERIALIZABLE (prevents phantom reads)
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     * @since   2.1.1
+     */
+    function setTransactionIsolation($isolation)
+    {
+        $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
+        if (!$this->supports('transactions')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'transactions are not supported', __FUNCTION__);
+        }
+        switch ($isolation) {
+        case 'READ UNCOMMITTED':
+        case 'READ COMMITTED':
+        case 'REPEATABLE READ':
+        case 'SERIALIZABLE':
+            break;
+        default:
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'isolation level is not supported: '.$isolation, __FUNCTION__);
+        }
+
+        $query = "SET SESSION TRANSACTION ISOLATION LEVEL $isolation";
+        return $this->_doQuery($query, true);
+    }
+
+    // }}}
+    // {{{ connect()
+
+    /**
+     * Connect to the database
+     *
+     * @return true on success, MDB2 Error Object on failure
+     */
+    function connect()
+    {
+        if (is_resource($this->connection)) {
+            //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
+            if (MDB2::areEquals($this->connected_dsn, $this->dsn)
+                && $this->opened_persistent == $this->options['persistent']
+                && $this->connected_database_name == $this->database_name
+            ) {
+                return MDB2_OK;
+            }
+            $this->disconnect(false);
+        }
+
+        if (!PEAR::loadExtension($this->phptype)) {
+            return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
+        }
+
+        $params = array();
+        if ($this->dsn['protocol'] && $this->dsn['protocol'] == 'unix') {
+            $params[0] = ':' . $this->dsn['socket'];
+        } else {
+            $params[0] = $this->dsn['hostspec'] ? $this->dsn['hostspec']
+                         : 'localhost';
+            if ($this->dsn['port']) {
+                $params[0].= ':' . $this->dsn['port'];
+            }
+        }
+        $params[] = $this->dsn['username'] ? $this->dsn['username'] : null;
+        $params[] = $this->dsn['password'] ? $this->dsn['password'] : null;
+        if (!$this->options['persistent']) {
+            if (isset($this->dsn['new_link'])
+                && ($this->dsn['new_link'] == 'true' || $this->dsn['new_link'] === true)
+            ) {
+                $params[] = true;
+            } else {
+                $params[] = false;
+            }
+        }
+        if (version_compare(phpversion(), '4.3.0', '>=')) {
+            $params[] = isset($this->dsn['client_flags'])
+                ? $this->dsn['client_flags'] : null;
+        }
+        $connect_function = $this->options['persistent'] ? 'mysql_pconnect' : 'mysql_connect';
+
+        $connection = @call_user_func_array($connect_function, $params);
+        if (!$connection) {
+            if (($err = @mysql_error()) != '') {
+                return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
+                    $err, __FUNCTION__);
+            } else {
+                return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
+                    'unable to establish a connection', __FUNCTION__);
+            }
+        }
+
+        if (!empty($this->dsn['charset'])) {
+            $result = $this->setCharset($this->dsn['charset'], $connection);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+
+        $this->connection = $connection;
+        $this->connected_dsn = $this->dsn;
+        $this->connected_database_name = '';
+        $this->opened_persistent = $this->options['persistent'];
+        $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
+
+        if ($this->database_name) {
+            if ($this->database_name != $this->connected_database_name) {
+                if (!@mysql_select_db($this->database_name, $connection)) {
+                    $err = $this->raiseError(null, null, null,
+                        'Could not select the database: '.$this->database_name, __FUNCTION__);
+                    return $err;
+                }
+                $this->connected_database_name = $this->database_name;
+            }
+        }
+
+        $this->supported['transactions'] = $this->options['use_transactions'];
+        if ($this->options['default_table_type']) {
+            switch (strtoupper($this->options['default_table_type'])) {
+            case 'BLACKHOLE':
+            case 'MEMORY':
+            case 'ARCHIVE':
+            case 'CSV':
+            case 'HEAP':
+            case 'ISAM':
+            case 'MERGE':
+            case 'MRG_ISAM':
+            case 'ISAM':
+            case 'MRG_MYISAM':
+            case 'MYISAM':
+                $this->supported['transactions'] = false;
+                $this->warnings[] = $this->options['default_table_type'] .
+                    ' is not a supported default table type';
+                break;
+            }
+        }
+        
+        $this->_getServerCapabilities();
+
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ setCharset()
+
+    /**
+     * Set the charset on the current connection
+     *
+     * @param string    charset
+     * @param resource  connection handle
+     *
+     * @return true on success, MDB2 Error Object on failure
+     */
+    function setCharset($charset, $connection = null)
+    {
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        $query = "SET NAMES '".mysql_real_escape_string($charset, $connection)."'";
+        return $this->_doQuery($query, true, $connection);
+    }
+
+    // }}}
+    // {{{ disconnect()
+
+    /**
+     * Log out and disconnect from the database.
+     *
+     * @param  boolean $force if the disconnect should be forced even if the
+     *                        connection is opened persistently
+     * @return mixed true on success, false if not connected and error
+     *                object on error
+     * @access public
+     */
+    function disconnect($force = true)
+    {
+        if (is_resource($this->connection)) {
+            if ($this->in_transaction) {
+                $dsn = $this->dsn;
+                $database_name = $this->database_name;
+                $persistent = $this->options['persistent'];
+                $this->dsn = $this->connected_dsn;
+                $this->database_name = $this->connected_database_name;
+                $this->options['persistent'] = $this->opened_persistent;
+                $this->rollback();
+                $this->dsn = $dsn;
+                $this->database_name = $database_name;
+                $this->options['persistent'] = $persistent;
+            }
+
+            if (!$this->opened_persistent || $force) {
+                @mysql_close($this->connection);
+            }
+        }
+        return parent::disconnect($force);
+    }
+
+    // }}}
+    // {{{ _doQuery()
+
+    /**
+     * Execute a query
+     * @param string $query  query
+     * @param boolean $is_manip  if the query is a manipulation query
+     * @param resource $connection
+     * @param string $database_name
+     * @return result or error object
+     * @access protected
+     */
+    function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
+    {
+        $this->last_query = $query;
+        $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        if ($this->options['disable_query']) {
+            $result = $is_manip ? 0 : null;
+            return $result;
+        }
+
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        if (is_null($database_name)) {
+            $database_name = $this->database_name;
+        }
+
+        if ($database_name) {
+            if ($database_name != $this->connected_database_name) {
+                if (!@mysql_select_db($database_name, $connection)) {
+                    $err = $this->raiseError(null, null, null,
+                        'Could not select the database: '.$database_name, __FUNCTION__);
+                    return $err;
+                }
+                $this->connected_database_name = $database_name;
+            }
+        }
+
+        $function = $this->options['result_buffering']
+            ? 'mysql_query' : 'mysql_unbuffered_query';
+        $result = @$function($query, $connection);
+        if (!$result) {
+            $err =& $this->raiseError(null, null, null,
+                'Could not execute statement', __FUNCTION__);
+            return $err;
+        }
+
+        $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
+        return $result;
+    }
+
+    // }}}
+    // {{{ _affectedRows()
+
+    /**
+     * Returns the number of rows affected
+     *
+     * @param resource $result
+     * @param resource $connection
+     * @return mixed MDB2 Error Object or the number of rows affected
+     * @access private
+     */
+    function _affectedRows($connection, $result = null)
+    {
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        return @mysql_affected_rows($connection);
+    }
+
+    // }}}
+    // {{{ _modifyQuery()
+
+    /**
+     * Changes a query string for various DBMS specific reasons
+     *
+     * @param string $query  query to modify
+     * @param boolean $is_manip  if it is a DML query
+     * @param integer $limit  limit the number of rows
+     * @param integer $offset  start reading from given offset
+     * @return string modified query
+     * @access protected
+     */
+    function _modifyQuery($query, $is_manip, $limit, $offset)
+    {
+        if ($this->options['portability'] & MDB2_PORTABILITY_DELETE_COUNT) {
+            // "DELETE FROM table" gives 0 affected rows in MySQL.
+            // This little hack lets you know how many rows were deleted.
+            if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
+                $query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
+                                      'DELETE FROM \1 WHERE 1=1', $query);
+            }
+        }
+        if ($limit > 0
+            && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
+        ) {
+            $query = rtrim($query);
+            if (substr($query, -1) == ';') {
+                $query = substr($query, 0, -1);
+            }
+
+            // LIMIT doesn't always come last in the query
+            // @see http://dev.mysql.com/doc/refman/5.0/en/select.html
+            $after = '';
+            if (preg_match('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', $query, $matches)) {
+                $after = $matches[0];
+                $query = preg_replace('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', '', $query);
+            } elseif (preg_match('/(\s+FOR\s+UPDATE\s*)$/i', $query, $matches)) {
+               $after = $matches[0];
+               $query = preg_replace('/(\s+FOR\s+UPDATE\s*)$/im', '', $query);
+            } elseif (preg_match('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', $query, $matches)) {
+               $after = $matches[0];
+               $query = preg_replace('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', '', $query);
+            }
+
+            if ($is_manip) {
+                return $query . " LIMIT $limit" . $after;
+            } else {
+                return $query . " LIMIT $offset, $limit" . $after;
+            }
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ getServerVersion()
+
+    /**
+     * return version information about the server
+     *
+     * @param bool   $native  determines if the raw version string should be returned
+     * @return mixed array/string with version information or MDB2 error object
+     * @access public
+     */
+    function getServerVersion($native = false)
+    {
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+        if ($this->connected_server_info) {
+            $server_info = $this->connected_server_info;
+        } else {
+            $server_info = @mysql_get_server_info($connection);
+        }
+        if (!$server_info) {
+            return $this->raiseError(null, null, null,
+                'Could not get server information', __FUNCTION__);
+        }
+        // cache server_info
+        $this->connected_server_info = $server_info;
+        if (!$native) {
+            $tmp = explode('.', $server_info, 3);
+            if (isset($tmp[2]) && strpos($tmp[2], '-')) {
+                $tmp2 = explode('-', @$tmp[2], 2);
+            } else {
+                $tmp2[0] = isset($tmp[2]) ? $tmp[2] : null;
+                $tmp2[1] = null;
+            }
+            $server_info = array(
+                'major' => isset($tmp[0]) ? $tmp[0] : null,
+                'minor' => isset($tmp[1]) ? $tmp[1] : null,
+                'patch' => $tmp2[0],
+                'extra' => $tmp2[1],
+                'native' => $server_info,
+            );
+        }
+        return $server_info;
+    }
+
+    // }}}
+    // {{{ _getServerCapabilities()
+
+    /**
+     * Fetch some information about the server capabilities
+     * (transactions, subselects, prepared statements, etc).
+     *
+     * @access private
+     */
+    function _getServerCapabilities()
+    {
+        if (!$this->server_capabilities_checked) {
+            $this->server_capabilities_checked = true;
+
+            //set defaults
+            $this->supported['sub_selects'] = 'emulated';
+            $this->supported['prepared_statements'] = 'emulated';
+            $this->start_transaction = false;
+            $this->varchar_max_length = 255;
+            
+            $server_info = $this->getServerVersion();
+            if (is_array($server_info)) {
+                if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.1.0', '<')) {
+                    $this->supported['sub_selects'] = true;
+                    $this->supported['prepared_statements'] = true;
+                }
+
+                if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.0.14', '<')
+                    || !version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.1.1', '<')
+                ) {
+                    $this->supported['savepoints'] = true;
+                }
+
+                if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.0.11', '<')) {
+                    $this->start_transaction = true;
+                }
+
+                if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '5.0.3', '<')) {
+                    $this->varchar_max_length = 65532;
+                }
+            }
+        }
+    }
+
+    // }}}
+    // {{{ function _skipUserDefinedVariable($query, $position)
+
+    /**
+     * Utility method, used by prepare() to avoid misinterpreting MySQL user 
+     * defined variables (SELECT @x:=5) for placeholders.
+     * Check if the placeholder is a false positive, i.e. if it is an user defined
+     * variable instead. If so, skip it and advance the position, otherwise
+     * return the current position, which is valid
+     *
+     * @param string $query
+     * @param integer $position current string cursor position
+     * @return integer $new_position
+     * @access protected
+     */
+    function _skipUserDefinedVariable($query, $position)
+    {
+        $found = strpos(strrev(substr($query, 0, $position)), '@');
+        if ($found === false) {
+            return $position;
+        }
+        $pos = strlen($query) - strlen(substr($query, $position)) - $found - 1;
+        $substring = substr($query, $pos, $position - $pos + 2);
+        if (preg_match('/^@\w+\s*:=$/', $substring)) {
+            return $position + 1; //found an user defined variable: skip it
+        }
+        return $position;
+    }
+
+    // }}}
+    // {{{ prepare()
+
+    /**
+     * Prepares a query for multiple execution with execute().
+     * With some database backends, this is emulated.
+     * prepare() requires a generic query as string like
+     * 'INSERT INTO numbers VALUES(?,?)' or
+     * 'INSERT INTO numbers VALUES(:foo,:bar)'.
+     * The ? and :name and are placeholders which can be set using
+     * bindParam() and the query can be sent off using the execute() method.
+     * The allowed format for :name can be set with the 'bindname_format' option.
+     *
+     * @param string $query the query to prepare
+     * @param mixed   $types  array that contains the types of the placeholders
+     * @param mixed   $result_types  array that contains the types of the columns in
+     *                        the result set or MDB2_PREPARE_RESULT, if set to
+     *                        MDB2_PREPARE_MANIP the query is handled as a manipulation query
+     * @param mixed   $lobs   key (field) value (parameter) pair for all lob placeholders
+     * @return mixed resource handle for the prepared query on success, a MDB2
+     *        error on failure
+     * @access public
+     * @see bindParam, execute
+     */
+    function &prepare($query, $types = null, $result_types = null, $lobs = array())
+    {
+        if ($this->options['emulate_prepared']
+            || $this->supported['prepared_statements'] !== true
+        ) {
+            $obj =& parent::prepare($query, $types, $result_types, $lobs);
+            return $obj;
+        }
+        $is_manip = ($result_types === MDB2_PREPARE_MANIP);
+        $offset = $this->offset;
+        $limit = $this->limit;
+        $this->offset = $this->limit = 0;
+        $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
+        $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        $placeholder_type_guess = $placeholder_type = null;
+        $question = '?';
+        $colon = ':';
+        $positions = array();
+        $position = 0;
+        while ($position < strlen($query)) {
+            $q_position = strpos($query, $question, $position);
+            $c_position = strpos($query, $colon, $position);
+            if ($q_position && $c_position) {
+                $p_position = min($q_position, $c_position);
+            } elseif ($q_position) {
+                $p_position = $q_position;
+            } elseif ($c_position) {
+                $p_position = $c_position;
+            } else {
+                break;
+            }
+            if (is_null($placeholder_type)) {
+                $placeholder_type_guess = $query[$p_position];
+            }
+            
+            $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position);
+            if (PEAR::isError($new_pos)) {
+                return $new_pos;
+            }
+            if ($new_pos != $position) {
+                $position = $new_pos;
+                continue; //evaluate again starting from the new position
+            }
+            
+            //make sure this is not part of an user defined variable
+            $new_pos = $this->_skipUserDefinedVariable($query, $position);
+            if ($new_pos != $position) {
+                $position = $new_pos;
+                continue; //evaluate again starting from the new position
+            }
+
+            if ($query[$position] == $placeholder_type_guess) {
+                if (is_null($placeholder_type)) {
+                    $placeholder_type = $query[$p_position];
+                    $question = $colon = $placeholder_type;
+                }
+                if ($placeholder_type == ':') {
+                    $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
+                    $parameter = preg_replace($regexp, '\\1', $query);
+                    if ($parameter === '') {
+                        $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                            'named parameter name must match "bindname_format" option', __FUNCTION__);
+                        return $err;
+                    }
+                    $positions[$p_position] = $parameter;
+                    $query = substr_replace($query, '?', $position, strlen($parameter)+1);
+                } else {
+                    $positions[$p_position] = count($positions);
+                }
+                $position = $p_position + 1;
+            } else {
+                $position = $p_position;
+            }
+        }
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+        static $prep_statement_counter = 1;
+        $statement_name = sprintf($this->options['statement_format'], $this->phptype, sha1(microtime() + mt_rand())) . $prep_statement_counter++;
+        $query = "PREPARE $statement_name FROM ".$this->quote($query, 'text');
+        $statement =& $this->_doQuery($query, true, $connection);
+        if (PEAR::isError($statement)) {
+            return $statement;
+        }
+
+        $class_name = 'MDB2_Statement_'.$this->phptype;
+        $obj = new $class_name($this, $statement_name, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
+        $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
+        return $obj;
+    }
+
+    // }}}
+    // {{{ replace()
+
+    /**
+     * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
+     * query, except that if there is already a row in the table with the same
+     * key field values, the REPLACE query just updates its values instead of
+     * inserting a new row.
+     *
+     * The REPLACE type of query does not make part of the SQL standards. Since
+     * practically only MySQL implements it natively, this type of query is
+     * emulated through this method for other DBMS using standard types of
+     * queries inside a transaction to assure the atomicity of the operation.
+     *
+     * @access public
+     *
+     * @param string $table name of the table on which the REPLACE query will
+     *  be executed.
+     * @param array $fields associative array that describes the fields and the
+     *  values that will be inserted or updated in the specified table. The
+     *  indexes of the array are the names of all the fields of the table. The
+     *  values of the array are also associative arrays that describe the
+     *  values and other properties of the table fields.
+     *
+     *  Here follows a list of field properties that need to be specified:
+     *
+     *    value:
+     *          Value to be assigned to the specified field. This value may be
+     *          of specified in database independent type format as this
+     *          function can perform the necessary datatype conversions.
+     *
+     *    Default:
+     *          this property is required unless the Null property
+     *          is set to 1.
+     *
+     *    type
+     *          Name of the type of the field. Currently, all types Metabase
+     *          are supported except for clob and blob.
+     *
+     *    Default: no type conversion
+     *
+     *    null
+     *          Boolean property that indicates that the value for this field
+     *          should be set to null.
+     *
+     *          The default value for fields missing in INSERT queries may be
+     *          specified the definition of a table. Often, the default value
+     *          is already null, but since the REPLACE may be emulated using
+     *          an UPDATE query, make sure that all fields of the table are
+     *          listed in this function argument array.
+     *
+     *    Default: 0
+     *
+     *    key
+     *          Boolean property that indicates that this field should be
+     *          handled as a primary key or at least as part of the compound
+     *          unique index of the table that will determine the row that will
+     *          updated if it exists or inserted a new row otherwise.
+     *
+     *          This function will fail if no key field is specified or if the
+     *          value of a key field is set to null because fields that are
+     *          part of unique index they may not be null.
+     *
+     *    Default: 0
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function replace($table, $fields)
+    {
+        $count = count($fields);
+        $query = $values = '';
+        $keys = $colnum = 0;
+        for (reset($fields); $colnum < $count; next($fields), $colnum++) {
+            $name = key($fields);
+            if ($colnum > 0) {
+                $query .= ',';
+                $values.= ',';
+            }
+            $query.= $name;
+            if (isset($fields[$name]['null']) && $fields[$name]['null']) {
+                $value = 'NULL';
+            } else {
+                $type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null;
+                $value = $this->quote($fields[$name]['value'], $type);
+                if (PEAR::isError($value)) {
+                    return $value;
+                }
+            }
+            $values.= $value;
+            if (isset($fields[$name]['key']) && $fields[$name]['key']) {
+                if ($value === 'NULL') {
+                    return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                        'key value '.$name.' may not be NULL', __FUNCTION__);
+                }
+                $keys++;
+            }
+        }
+        if ($keys == 0) {
+            return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                'not specified which fields are keys', __FUNCTION__);
+        }
+
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $query = "REPLACE INTO $table ($query) VALUES ($values)";
+        $result =& $this->_doQuery($query, true, $connection);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return $this->_affectedRows($connection, $result);
+    }
+
+    // }}}
+    // {{{ nextID()
+
+    /**
+     * Returns the next free id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @param boolean $ondemand when true the sequence is
+     *                          automatic created, if it
+     *                          not exists
+     *
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function nextID($seq_name, $ondemand = true)
+    {
+        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+        $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
+        $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL)";
+        $this->expectError(MDB2_ERROR_NOSUCHTABLE);
+        $result =& $this->_doQuery($query, true);
+        $this->popExpect();
+        if (PEAR::isError($result)) {
+            if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
+                $this->loadModule('Manager', null, true);
+                $result = $this->manager->createSequence($seq_name);
+                if (PEAR::isError($result)) {
+                    return $this->raiseError($result, null, null,
+                        'on demand sequence '.$seq_name.' could not be created', __FUNCTION__);
+                } else {
+                    return $this->nextID($seq_name, false);
+                }
+            }
+            return $result;
+        }
+        $value = $this->lastInsertID();
+        if (is_numeric($value)) {
+            $query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value";
+            $result =& $this->_doQuery($query, true);
+            if (PEAR::isError($result)) {
+                $this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
+            }
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ lastInsertID()
+
+    /**
+     * Returns the autoincrement ID if supported or $id or fetches the current
+     * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
+     *
+     * @param string $table name of the table into which a new row was inserted
+     * @param string $field name of the field into which a new row was inserted
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function lastInsertID($table = null, $field = null)
+    {
+        // not using mysql_insert_id() due to http://pear.php.net/bugs/bug.php?id=8051
+        return $this->queryOne('SELECT LAST_INSERT_ID()', 'integer');
+    }
+
+    // }}}
+    // {{{ currID()
+
+    /**
+     * Returns the current id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function currID($seq_name)
+    {
+        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+        $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
+        $query = "SELECT MAX($seqcol_name) FROM $sequence_name";
+        return $this->queryOne($query, 'integer');
+    }
+}
+
+/**
+ * MDB2 MySQL result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Result_mysql extends MDB2_Result_Common
+{
+    // }}}
+    // {{{ fetchRow()
+
+    /**
+     * Fetch a row and insert the data into an existing array.
+     *
+     * @param int       $fetchmode  how the array data should be indexed
+     * @param int    $rownum    number of the row where the data can be found
+     * @return int data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+    {
+        if (!is_null($rownum)) {
+            $seek = $this->seek($rownum);
+            if (PEAR::isError($seek)) {
+                return $seek;
+            }
+        }
+        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
+            $fetchmode = $this->db->fetchmode;
+        }
+        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+            $row = @mysql_fetch_assoc($this->result);
+            if (is_array($row)
+                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+            ) {
+                $row = array_change_key_case($row, $this->db->options['field_case']);
+            }
+        } else {
+           $row = @mysql_fetch_row($this->result);
+        }
+
+        if (!$row) {
+            if ($this->result === false) {
+                $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+                return $err;
+            }
+            $null = null;
+            return $null;
+        }
+        $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
+        $rtrim = false;
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
+            if (empty($this->types)) {
+                $mode += MDB2_PORTABILITY_RTRIM;
+            } else {
+                $rtrim = true;
+            }
+        }
+        if ($mode) {
+            $this->db->_fixResultArrayValues($row, $mode);
+        }
+        if (!empty($this->types)) {
+            $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
+        }
+        if (!empty($this->values)) {
+            $this->_assignBindColumns($row);
+        }
+        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
+            $object_class = $this->db->options['fetch_class'];
+            if ($object_class == 'stdClass') {
+                $row = (object) $row;
+            } else {
+                $row = &new $object_class($row);
+            }
+        }
+        ++$this->rownum;
+        return $row;
+    }
+
+    // }}}
+    // {{{ _getColumnNames()
+
+    /**
+     * Retrieve the names of columns returned by the DBMS in a query result.
+     *
+     * @return  mixed   Array variable that holds the names of columns as keys
+     *                  or an MDB2 error on failure.
+     *                  Some DBMS may not return any columns when the result set
+     *                  does not contain any rows.
+     * @access private
+     */
+    function _getColumnNames()
+    {
+        $columns = array();
+        $numcols = $this->numCols();
+        if (PEAR::isError($numcols)) {
+            return $numcols;
+        }
+        for ($column = 0; $column < $numcols; $column++) {
+            $column_name = @mysql_field_name($this->result, $column);
+            $columns[$column_name] = $column;
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $columns = array_change_key_case($columns, $this->db->options['field_case']);
+        }
+        return $columns;
+    }
+
+    // }}}
+    // {{{ numCols()
+
+    /**
+     * Count the number of columns returned by the DBMS in a query result.
+     *
+     * @return mixed integer value with the number of columns, a MDB2 error
+     *                       on failure
+     * @access public
+     */
+    function numCols()
+    {
+        $cols = @mysql_num_fields($this->result);
+        if (is_null($cols)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return count($this->types);
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get column count', __FUNCTION__);
+        }
+        return $cols;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Free the internal resources associated with result.
+     *
+     * @return boolean true on success, false if result is invalid
+     * @access public
+     */
+    function free()
+    {
+        if (is_resource($this->result) && $this->db->connection) {
+            $free = @mysql_free_result($this->result);
+            if ($free === false) {
+                return $this->db->raiseError(null, null, null,
+                    'Could not free result', __FUNCTION__);
+            }
+        }
+        $this->result = false;
+        return MDB2_OK;
+    }
+}
+
+/**
+ * MDB2 MySQL buffered result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_BufferedResult_mysql extends MDB2_Result_mysql
+{
+    // }}}
+    // {{{ seek()
+
+    /**
+     * Seek to a specific row in a result set
+     *
+     * @param int    $rownum    number of the row where the data can be found
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function seek($rownum = 0)
+    {
+        if ($this->rownum != ($rownum - 1) && !@mysql_data_seek($this->result, $rownum)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return MDB2_OK;
+            }
+            return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
+                'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
+        }
+        $this->rownum = $rownum - 1;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ valid()
+
+    /**
+     * Check if the end of the result set has been reached
+     *
+     * @return mixed true or false on sucess, a MDB2 error on failure
+     * @access public
+     */
+    function valid()
+    {
+        $numrows = $this->numRows();
+        if (PEAR::isError($numrows)) {
+            return $numrows;
+        }
+        return $this->rownum < ($numrows - 1);
+    }
+
+    // }}}
+    // {{{ numRows()
+
+    /**
+     * Returns the number of rows in a result object
+     *
+     * @return mixed MDB2 Error Object or the number of rows
+     * @access public
+     */
+    function numRows()
+    {
+        $rows = @mysql_num_rows($this->result);
+        if (false === $rows) {
+            if (false === $this->result) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return 0;
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get row count', __FUNCTION__);
+        }
+        return $rows;
+    }
+}
+
+/**
+ * MDB2 MySQL statement driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Statement_mysql extends MDB2_Statement_Common
+{
+    // {{{ _execute()
+
+    /**
+     * Execute a prepared query statement helper method.
+     *
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access private
+     */
+    function &_execute($result_class = true, $result_wrap_class = false)
+    {
+        if (is_null($this->statement)) {
+            $result =& parent::_execute($result_class, $result_wrap_class);
+            return $result;
+        }
+        $this->db->last_query = $this->query;
+        $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values));
+        if ($this->db->getOption('disable_query')) {
+            $result = $this->is_manip ? 0 : null;
+            return $result;
+        }
+
+        $connection = $this->db->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $query = 'EXECUTE '.$this->statement;
+        if (!empty($this->positions)) {
+            $parameters = array();
+            foreach ($this->positions as $parameter) {
+                if (!array_key_exists($parameter, $this->values)) {
+                    return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                        'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
+                }
+                $value = $this->values[$parameter];
+                $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
+                if (is_resource($value) || $type == 'clob' || $type == 'blob' && $this->db->options['lob_allow_url_include']) {
+                    if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
+                        if ($match[1] == 'file://') {
+                            $value = $match[2];
+                        }
+                        $value = @fopen($value, 'r');
+                        $close = true;
+                    }
+                    if (is_resource($value)) {
+                        $data = '';
+                        while (!@feof($value)) {
+                            $data.= @fread($value, $this->db->options['lob_buffer_length']);
+                        }
+                        if ($close) {
+                            @fclose($value);
+                        }
+                        $value = $data;
+                    }
+                }
+                $quoted = $this->db->quote($value, $type);
+                if (PEAR::isError($quoted)) {
+                    return $quoted;
+                }
+                $param_query = 'SET @'.$parameter.' = '.$quoted;
+                $result = $this->db->_doQuery($param_query, true, $connection);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+            $query.= ' USING @'.implode(', @', array_values($this->positions));
+        }
+
+        $result = $this->db->_doQuery($query, $this->is_manip, $connection);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($this->is_manip) {
+            $affected_rows = $this->db->_affectedRows($connection, $result);
+            return $affected_rows;
+        }
+
+        $result =& $this->db->_wrapResult($result, $this->result_types,
+            $result_class, $result_wrap_class, $this->limit, $this->offset);
+        $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result));
+        return $result;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Release resources allocated for the specified prepared query.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function free()
+    {
+        if (is_null($this->positions)) {
+            return $this->db->raiseError(MDB2_ERROR, null, null,
+                'Prepared statement has already been freed', __FUNCTION__);
+        }
+        $result = MDB2_OK;
+
+        if (!is_null($this->statement)) {
+            $connection = $this->db->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+            $query = 'DEALLOCATE PREPARE '.$this->statement;
+            $result = $this->db->_doQuery($query, true, $connection);
+        }
+
+        parent::free();
+        return $result;
+    }
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/mysqli.php b/program/lib/MDB2/Driver/mysqli.php
new file mode 100644
index 0000000..5dc53d6
--- /dev/null
+++ b/program/lib/MDB2/Driver/mysqli.php
@@ -0,0 +1,1697 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysqli.php,v 1.176 2007/11/10 13:27:03 quipo Exp $
+//
+
+/**
+ * MDB2 MySQLi driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_mysqli extends MDB2_Driver_Common
+{
+    // {{{ properties
+
+    var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => '\\', 'escape_pattern' => '\\');
+
+    var $identifier_quoting = array('start' => '`', 'end' => '`', 'escape' => '`');
+
+    var $sql_comments = array(
+        array('start' => '-- ', 'end' => "\n", 'escape' => false),
+        array('start' => '#', 'end' => "\n", 'escape' => false),
+        array('start' => '/*', 'end' => '*/', 'escape' => false),
+    );
+
+    var $server_capabilities_checked = false;
+
+    var $start_transaction = false;
+
+    var $varchar_max_length = 255;
+
+    // }}}
+    // {{{ constructor
+
+    /**
+     * Constructor
+     */
+    function __construct()
+    {
+        parent::__construct();
+
+        $this->phptype = 'mysqli';
+        $this->dbsyntax = 'mysql';
+
+        $this->supported['sequences'] = 'emulated';
+        $this->supported['indexes'] = true;
+        $this->supported['affected_rows'] = true;
+        $this->supported['transactions'] = false;
+        $this->supported['savepoints'] = false;
+        $this->supported['summary_functions'] = true;
+        $this->supported['order_by_text'] = true;
+        $this->supported['current_id'] = 'emulated';
+        $this->supported['limit_queries'] = true;
+        $this->supported['LOBs'] = true;
+        $this->supported['replace'] = true;
+        $this->supported['sub_selects'] = 'emulated';
+        $this->supported['auto_increment'] = true;
+        $this->supported['primary_key'] = true;
+        $this->supported['result_introspection'] = true;
+        $this->supported['prepared_statements'] = 'emulated';
+        $this->supported['identifier_quoting'] = true;
+        $this->supported['pattern_escaping'] = true;
+        $this->supported['new_link'] = true;
+
+        $this->options['default_table_type'] = '';
+        $this->options['multi_query'] = false;
+    }
+
+    // }}}
+    // {{{ errorInfo()
+
+    /**
+     * This method is used to collect information about an error
+     *
+     * @param integer $error
+     * @return array
+     * @access public
+     */
+    function errorInfo($error = null)
+    {
+        if ($this->connection) {
+            $native_code = @mysqli_errno($this->connection);
+            $native_msg  = @mysqli_error($this->connection);
+        } else {
+            $native_code = @mysqli_connect_errno();
+            $native_msg  = @mysqli_connect_error();
+        }
+        if (is_null($error)) {
+            static $ecode_map;
+            if (empty($ecode_map)) {
+                $ecode_map = array(
+                    1000 => MDB2_ERROR_INVALID, //hashchk
+                    1001 => MDB2_ERROR_INVALID, //isamchk
+                    1004 => MDB2_ERROR_CANNOT_CREATE,
+                    1005 => MDB2_ERROR_CANNOT_CREATE,
+                    1006 => MDB2_ERROR_CANNOT_CREATE,
+                    1007 => MDB2_ERROR_ALREADY_EXISTS,
+                    1008 => MDB2_ERROR_CANNOT_DROP,
+                    1009 => MDB2_ERROR_CANNOT_DROP,
+                    1010 => MDB2_ERROR_CANNOT_DROP,
+                    1011 => MDB2_ERROR_CANNOT_DELETE,
+                    1022 => MDB2_ERROR_ALREADY_EXISTS,
+                    1029 => MDB2_ERROR_NOT_FOUND,
+                    1032 => MDB2_ERROR_NOT_FOUND,
+                    1044 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1045 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1046 => MDB2_ERROR_NODBSELECTED,
+                    1048 => MDB2_ERROR_CONSTRAINT,
+                    1049 => MDB2_ERROR_NOSUCHDB,
+                    1050 => MDB2_ERROR_ALREADY_EXISTS,
+                    1051 => MDB2_ERROR_NOSUCHTABLE,
+                    1054 => MDB2_ERROR_NOSUCHFIELD,
+                    1060 => MDB2_ERROR_ALREADY_EXISTS,
+                    1061 => MDB2_ERROR_ALREADY_EXISTS,
+                    1062 => MDB2_ERROR_ALREADY_EXISTS,
+                    1064 => MDB2_ERROR_SYNTAX,
+                    1067 => MDB2_ERROR_INVALID,
+                    1072 => MDB2_ERROR_NOT_FOUND,
+                    1086 => MDB2_ERROR_ALREADY_EXISTS,
+                    1091 => MDB2_ERROR_NOT_FOUND,
+                    1100 => MDB2_ERROR_NOT_LOCKED,
+                    1109 => MDB2_ERROR_NOT_FOUND,
+                    1125 => MDB2_ERROR_ALREADY_EXISTS,
+                    1136 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+                    1138 => MDB2_ERROR_INVALID,
+                    1142 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1143 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1146 => MDB2_ERROR_NOSUCHTABLE,
+                    1149 => MDB2_ERROR_SYNTAX,
+                    1169 => MDB2_ERROR_CONSTRAINT,
+                    1176 => MDB2_ERROR_NOT_FOUND,
+                    1177 => MDB2_ERROR_NOSUCHTABLE,
+                    1213 => MDB2_ERROR_DEADLOCK,
+                    1216 => MDB2_ERROR_CONSTRAINT,
+                    1217 => MDB2_ERROR_CONSTRAINT,
+                    1227 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1299 => MDB2_ERROR_INVALID_DATE,
+                    1300 => MDB2_ERROR_INVALID,
+                    1304 => MDB2_ERROR_ALREADY_EXISTS,
+                    1305 => MDB2_ERROR_NOT_FOUND,
+                    1306 => MDB2_ERROR_CANNOT_DROP,
+                    1307 => MDB2_ERROR_CANNOT_CREATE,
+                    1334 => MDB2_ERROR_CANNOT_ALTER,
+                    1339 => MDB2_ERROR_NOT_FOUND,
+                    1356 => MDB2_ERROR_INVALID,
+                    1359 => MDB2_ERROR_ALREADY_EXISTS,
+                    1360 => MDB2_ERROR_NOT_FOUND,
+                    1363 => MDB2_ERROR_NOT_FOUND,
+                    1365 => MDB2_ERROR_DIVZERO,
+                    1451 => MDB2_ERROR_CONSTRAINT,
+                    1452 => MDB2_ERROR_CONSTRAINT,
+                    1542 => MDB2_ERROR_CANNOT_DROP,
+                    1546 => MDB2_ERROR_CONSTRAINT,
+                    1582 => MDB2_ERROR_CONSTRAINT,
+                    2019 => MDB2_ERROR_INVALID,
+                );
+            }
+            if ($this->options['portability'] & MDB2_PORTABILITY_ERRORS) {
+                $ecode_map[1022] = MDB2_ERROR_CONSTRAINT;
+                $ecode_map[1048] = MDB2_ERROR_CONSTRAINT_NOT_NULL;
+                $ecode_map[1062] = MDB2_ERROR_CONSTRAINT;
+            } else {
+                // Doing this in case mode changes during runtime.
+                $ecode_map[1022] = MDB2_ERROR_ALREADY_EXISTS;
+                $ecode_map[1048] = MDB2_ERROR_CONSTRAINT;
+                $ecode_map[1062] = MDB2_ERROR_ALREADY_EXISTS;
+            }
+            if (isset($ecode_map[$native_code])) {
+                $error = $ecode_map[$native_code];
+            }
+        }
+        return array($error, $native_code, $native_msg);
+    }
+
+    // }}}
+    // {{{ escape()
+
+    /**
+     * Quotes a string so it can be safely used in a query. It will quote
+     * the text so it can safely be used within a query.
+     *
+     * @param   string  the input string to quote
+     * @param   bool    escape wildcards
+     *
+     * @return  string  quoted string
+     *
+     * @access  public
+     */
+    function escape($text, $escape_wildcards = false)
+    {
+        if ($escape_wildcards) {
+            $text = $this->escapePattern($text);
+        }
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+        $text = @mysqli_real_escape_string($connection, $text);
+        return $text;
+    }
+
+    // }}}
+    // {{{ beginTransaction()
+
+    /**
+     * Start a transaction or set a savepoint.
+     *
+     * @param   string  name of a savepoint to set
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function beginTransaction($savepoint = null)
+    {
+        $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        $this->_getServerCapabilities();
+        if (!is_null($savepoint)) {
+            if (!$this->supports('savepoints')) {
+                return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'savepoints are not supported', __FUNCTION__);
+            }
+            if (!$this->in_transaction) {
+                return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                    'savepoint cannot be released when changes are auto committed', __FUNCTION__);
+            }
+            $query = 'SAVEPOINT '.$savepoint;
+            return $this->_doQuery($query, true);
+        } elseif ($this->in_transaction) {
+            return MDB2_OK;  //nothing to do
+        }
+        $query = $this->start_transaction ? 'START TRANSACTION' : 'SET AUTOCOMMIT = 1';
+        $result =& $this->_doQuery($query, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = true;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ commit()
+
+    /**
+     * Commit the database changes done during a transaction that is in
+     * progress or release a savepoint. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after committing the pending changes.
+     *
+     * @param   string  name of a savepoint to release
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function commit($savepoint = null)
+    {
+        $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            if (!$this->supports('savepoints')) {
+                return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'savepoints are not supported', __FUNCTION__);
+            }
+            $server_info = $this->getServerVersion();
+            if (version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '5.0.3', '<')) {
+                return MDB2_OK;
+            }
+            $query = 'RELEASE SAVEPOINT '.$savepoint;
+            return $this->_doQuery($query, true);
+        }
+
+        if (!$this->supports('transactions')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'transactions are not supported', __FUNCTION__);
+        }
+
+        $result =& $this->_doQuery('COMMIT', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if (!$this->start_transaction) {
+            $query = 'SET AUTOCOMMIT = 0';
+            $result =& $this->_doQuery($query, true);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ rollback()
+
+    /**
+     * Cancel any database changes done during a transaction or since a specific
+     * savepoint that is in progress. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after canceling the pending changes.
+     *
+     * @param   string  name of a savepoint to rollback to
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function rollback($savepoint = null)
+    {
+        $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'rollback cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            if (!$this->supports('savepoints')) {
+                return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                    'savepoints are not supported', __FUNCTION__);
+            }
+            $query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
+            return $this->_doQuery($query, true);
+        }
+
+        $query = 'ROLLBACK';
+        $result =& $this->_doQuery($query, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if (!$this->start_transaction) {
+            $query = 'SET AUTOCOMMIT = 0';
+            $result =& $this->_doQuery($query, true);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function setTransactionIsolation()
+
+    /**
+     * Set the transacton isolation level.
+     *
+     * @param   string  standard isolation level
+     *                  READ UNCOMMITTED (allows dirty reads)
+     *                  READ COMMITTED (prevents dirty reads)
+     *                  REPEATABLE READ (prevents nonrepeatable reads)
+     *                  SERIALIZABLE (prevents phantom reads)
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     * @since   2.1.1
+     */
+    function setTransactionIsolation($isolation)
+    {
+        $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
+        if (!$this->supports('transactions')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'transactions are not supported', __FUNCTION__);
+        }
+        switch ($isolation) {
+        case 'READ UNCOMMITTED':
+        case 'READ COMMITTED':
+        case 'REPEATABLE READ':
+        case 'SERIALIZABLE':
+            break;
+        default:
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'isolation level is not supported: '.$isolation, __FUNCTION__);
+        }
+
+        $query = "SET SESSION TRANSACTION ISOLATION LEVEL $isolation";
+        return $this->_doQuery($query, true);
+    }
+
+    // }}}
+    // {{{ connect()
+
+    /**
+     * Connect to the database
+     *
+     * @return true on success, MDB2 Error Object on failure
+     */
+    function connect()
+    {
+        if (is_object($this->connection)) {
+            //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0) {
+            if (MDB2::areEquals($this->connected_dsn, $this->dsn)) {
+                return MDB2_OK;
+            }
+            $this->connection = 0;
+        }
+
+        if (!PEAR::loadExtension($this->phptype)) {
+            return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
+        }
+
+        $connection = @mysqli_init();
+        if (!empty($this->dsn['charset']) && defined('MYSQLI_SET_CHARSET_NAME')) {
+            @mysqli_options($connection, MYSQLI_SET_CHARSET_NAME, $this->dsn['charset']);
+        }
+
+
+        if ($this->options['ssl']) {
+            @mysqli_ssl_set(
+                $connection,
+                empty($this->dsn['key'])    ? null : $this->dsn['key'],
+                empty($this->dsn['cert'])   ? null : $this->dsn['cert'],
+                empty($this->dsn['ca'])     ? null : $this->dsn['ca'],
+                empty($this->dsn['capath']) ? null : $this->dsn['capath'],
+                empty($this->dsn['cipher']) ? null : $this->dsn['cipher']
+            );
+        }
+
+        if (!@mysqli_real_connect(
+            $connection,
+            $this->dsn['hostspec'],
+            $this->dsn['username'],
+            $this->dsn['password'],
+            $this->database_name,
+            $this->dsn['port'],
+            $this->dsn['socket']
+        )) {
+
+            if (($err = @mysqli_connect_error()) != '') {
+                return $this->raiseError(null,
+                    null, null, $err, __FUNCTION__);
+            } else {
+                return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
+                    'unable to establish a connection', __FUNCTION__);
+            }
+        }
+
+        if (!empty($this->dsn['charset']) && !defined('MYSQLI_SET_CHARSET_NAME')) {
+            $result = $this->setCharset($this->dsn['charset'], $connection);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+
+        $this->connection = $connection;
+        $this->connected_dsn = $this->dsn;
+        $this->connected_database_name = $this->database_name;
+        $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
+
+        $this->supported['transactions'] = $this->options['use_transactions'];
+        if ($this->options['default_table_type']) {
+            switch (strtoupper($this->options['default_table_type'])) {
+            case 'BLACKHOLE':
+            case 'MEMORY':
+            case 'ARCHIVE':
+            case 'CSV':
+            case 'HEAP':
+            case 'ISAM':
+            case 'MERGE':
+            case 'MRG_ISAM':
+            case 'ISAM':
+            case 'MRG_MYISAM':
+            case 'MYISAM':
+                $this->supported['transactions'] = false;
+                $this->warnings[] = $this->options['default_table_type'] .
+                    ' is not a supported default table type';
+                break;
+            }
+        }
+        
+        $this->_getServerCapabilities();
+
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ setCharset()
+
+    /**
+     * Set the charset on the current connection
+     *
+     * @param string    charset
+     * @param resource  connection handle
+     *
+     * @return true on success, MDB2 Error Object on failure
+     */
+    function setCharset($charset, $connection = null)
+    {
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        $client_info = mysqli_get_client_version();
+        if (OS_WINDOWS && ((40111 > $client_info) ||
+            ((50000 <= $client_info) && (50006 > $client_info)))
+        ) {
+            $query = "SET NAMES '".mysqli_real_escape_string($connection, $charset)."'";
+            return $this->_doQuery($query, true, $connection);
+        }
+        if (!$result = mysqli_set_charset($connection, $charset)) {
+            $err =& $this->raiseError(null, null, null,
+                'Could not set client character set', __FUNCTION__);
+            return $err;
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ disconnect()
+
+    /**
+     * Log out and disconnect from the database.
+     *
+     * @param  boolean $force if the disconnect should be forced even if the
+     *                        connection is opened persistently
+     * @return mixed true on success, false if not connected and error
+     *                object on error
+     * @access public
+     */
+    function disconnect($force = true)
+    {
+        if (is_object($this->connection)) {
+            if ($this->in_transaction) {
+                $dsn = $this->dsn;
+                $database_name = $this->database_name;
+                $persistent = $this->options['persistent'];
+                $this->dsn = $this->connected_dsn;
+                $this->database_name = $this->connected_database_name;
+                $this->options['persistent'] = $this->opened_persistent;
+                $this->rollback();
+                $this->dsn = $dsn;
+                $this->database_name = $database_name;
+                $this->options['persistent'] = $persistent;
+            }
+
+            if ($force) {
+                @mysqli_close($this->connection);
+            }
+        }
+        return parent::disconnect($force);
+    }
+
+    // }}}
+    // {{{ _doQuery()
+
+    /**
+     * Execute a query
+     * @param string $query  query
+     * @param boolean $is_manip  if the query is a manipulation query
+     * @param resource $connection
+     * @param string $database_name
+     * @return result or error object
+     * @access protected
+     */
+    function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
+    {
+        $this->last_query = $query;
+        $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        if ($this->options['disable_query']) {
+            $result = $is_manip ? 0 : null;
+            return $result;
+        }
+
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        if (is_null($database_name)) {
+            $database_name = $this->database_name;
+        }
+
+        if ($database_name) {
+            if ($database_name != $this->connected_database_name) {
+                if (!@mysqli_select_db($connection, $database_name)) {
+                    $err = $this->raiseError(null, null, null,
+                        'Could not select the database: '.$database_name, __FUNCTION__);
+                    return $err;
+                }
+                $this->connected_database_name = $database_name;
+            }
+        }
+
+        if ($this->options['multi_query']) {
+            $result = mysqli_multi_query($connection, $query);
+        } else {
+            $resultmode = $this->options['result_buffering'] ? MYSQLI_USE_RESULT : MYSQLI_USE_RESULT;
+            $result = mysqli_query($connection, $query);
+        }
+
+        if (!$result) {
+            $err =& $this->raiseError(null, null, null,
+                'Could not execute statement', __FUNCTION__);
+            return $err;
+        }
+
+        if ($this->options['multi_query']) {
+            if ($this->options['result_buffering']) {
+                if (!($result = @mysqli_store_result($connection))) {
+                    $err =& $this->raiseError(null, null, null,
+                        'Could not get the first result from a multi query', __FUNCTION__);
+                    return $err;
+                }
+            } elseif (!($result = @mysqli_use_result($connection))) {
+                $err =& $this->raiseError(null, null, null,
+                        'Could not get the first result from a multi query', __FUNCTION__);
+                return $err;
+            }
+        }
+
+        $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
+        return $result;
+    }
+
+    // }}}
+    // {{{ _affectedRows()
+
+    /**
+     * Returns the number of rows affected
+     *
+     * @param resource $result
+     * @param resource $connection
+     * @return mixed MDB2 Error Object or the number of rows affected
+     * @access private
+     */
+    function _affectedRows($connection, $result = null)
+    {
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        return @mysqli_affected_rows($connection);
+    }
+
+    // }}}
+    // {{{ _modifyQuery()
+
+    /**
+     * Changes a query string for various DBMS specific reasons
+     *
+     * @param string $query  query to modify
+     * @param boolean $is_manip  if it is a DML query
+     * @param integer $limit  limit the number of rows
+     * @param integer $offset  start reading from given offset
+     * @return string modified query
+     * @access protected
+     */
+    function _modifyQuery($query, $is_manip, $limit, $offset)
+    {
+        if ($this->options['portability'] & MDB2_PORTABILITY_DELETE_COUNT) {
+            // "DELETE FROM table" gives 0 affected rows in MySQL.
+            // This little hack lets you know how many rows were deleted.
+            if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
+                $query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
+                                      'DELETE FROM \1 WHERE 1=1', $query);
+            }
+        }
+        if ($limit > 0
+            && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
+        ) {
+            $query = rtrim($query);
+            if (substr($query, -1) == ';') {
+                $query = substr($query, 0, -1);
+            }
+
+            // LIMIT doesn't always come last in the query
+            // @see http://dev.mysql.com/doc/refman/5.0/en/select.html
+            $after = '';
+            if (preg_match('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', $query, $matches)) {
+                $after = $matches[0];
+                $query = preg_replace('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', '', $query);
+            } elseif (preg_match('/(\s+FOR\s+UPDATE\s*)$/i', $query, $matches)) {
+               $after = $matches[0];
+               $query = preg_replace('/(\s+FOR\s+UPDATE\s*)$/im', '', $query);
+            } elseif (preg_match('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', $query, $matches)) {
+               $after = $matches[0];
+               $query = preg_replace('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', '', $query);
+            }
+
+            if ($is_manip) {
+                return $query . " LIMIT $limit" . $after;
+            } else {
+                return $query . " LIMIT $offset, $limit" . $after;
+            }
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ getServerVersion()
+
+    /**
+     * return version information about the server
+     *
+     * @param bool   $native  determines if the raw version string should be returned
+     * @return mixed array/string with version information or MDB2 error object
+     * @access public
+     */
+    function getServerVersion($native = false)
+    {
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+        if ($this->connected_server_info) {
+            $server_info = $this->connected_server_info;
+        } else {
+            $server_info = @mysqli_get_server_info($connection);
+        }
+        if (!$server_info) {
+            return $this->raiseError(null, null, null,
+                'Could not get server information', __FUNCTION__);
+        }
+        // cache server_info
+        $this->connected_server_info = $server_info;
+        if (!$native) {
+            $tmp = explode('.', $server_info, 3);
+            if (isset($tmp[2]) && strpos($tmp[2], '-')) {
+                $tmp2 = explode('-', @$tmp[2], 2);
+            } else {
+                $tmp2[0] = isset($tmp[2]) ? $tmp[2] : null;
+                $tmp2[1] = null;
+            }
+            $server_info = array(
+                'major' => isset($tmp[0]) ? $tmp[0] : null,
+                'minor' => isset($tmp[1]) ? $tmp[1] : null,
+                'patch' => $tmp2[0],
+                'extra' => $tmp2[1],
+                'native' => $server_info,
+            );
+        }
+        return $server_info;
+    }
+
+    // }}}
+    // {{{ _getServerCapabilities()
+
+    /**
+     * Fetch some information about the server capabilities
+     * (transactions, subselects, prepared statements, etc).
+     *
+     * @access private
+     */
+    function _getServerCapabilities()
+    {
+        if (!$this->server_capabilities_checked) {
+            $this->server_capabilities_checked = true;
+
+            //set defaults
+            $this->supported['sub_selects'] = 'emulated';
+            $this->supported['prepared_statements'] = 'emulated';
+            $this->start_transaction = false;
+            $this->varchar_max_length = 255;
+
+            $server_info = $this->getServerVersion();
+            if (is_array($server_info)) {
+                if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.1.0', '<')) {
+                    $this->supported['sub_selects'] = true;
+                    $this->supported['prepared_statements'] = true;
+                }
+
+                if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.0.14', '<')
+                    || !version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.1.1', '<')
+                ) {
+                    $this->supported['savepoints'] = true;
+                }
+
+                if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '4.0.11', '<')) {
+                    $this->start_transaction = true;
+                }
+
+                if (!version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '5.0.3', '<')) {
+                    $this->varchar_max_length = 65532;
+                }
+            }
+        }
+    }
+
+    // }}}
+    // {{{ function _skipUserDefinedVariable($query, $position)
+
+    /**
+     * Utility method, used by prepare() to avoid misinterpreting MySQL user
+     * defined variables (SELECT @x:=5) for placeholders.
+     * Check if the placeholder is a false positive, i.e. if it is an user defined
+     * variable instead. If so, skip it and advance the position, otherwise
+     * return the current position, which is valid
+     *
+     * @param string $query
+     * @param integer $position current string cursor position
+     * @return integer $new_position
+     * @access protected
+     */
+    function _skipUserDefinedVariable($query, $position)
+    {
+        $found = strpos(strrev(substr($query, 0, $position)), '@');
+        if ($found === false) {
+            return $position;
+        }
+        $pos = strlen($query) - strlen(substr($query, $position)) - $found - 1;
+        $substring = substr($query, $pos, $position - $pos + 2);
+        if (preg_match('/^@\w+\s*:=$/', $substring)) {
+            return $position + 1; //found an user defined variable: skip it
+        }
+        return $position;
+    }
+
+    // }}}
+    // {{{ prepare()
+
+    /**
+     * Prepares a query for multiple execution with execute().
+     * With some database backends, this is emulated.
+     * prepare() requires a generic query as string like
+     * 'INSERT INTO numbers VALUES(?,?)' or
+     * 'INSERT INTO numbers VALUES(:foo,:bar)'.
+     * The ? and :name and are placeholders which can be set using
+     * bindParam() and the query can be sent off using the execute() method.
+     * The allowed format for :name can be set with the 'bindname_format' option.
+     *
+     * @param string $query the query to prepare
+     * @param mixed   $types  array that contains the types of the placeholders
+     * @param mixed   $result_types  array that contains the types of the columns in
+     *                        the result set or MDB2_PREPARE_RESULT, if set to
+     *                        MDB2_PREPARE_MANIP the query is handled as a manipulation query
+     * @param mixed   $lobs   key (field) value (parameter) pair for all lob placeholders
+     * @return mixed resource handle for the prepared query on success, a MDB2
+     *        error on failure
+     * @access public
+     * @see bindParam, execute
+     */
+    function &prepare($query, $types = null, $result_types = null, $lobs = array())
+    {
+        if ($this->options['emulate_prepared']
+            || $this->supported['prepared_statements'] !== true
+        ) {
+            $obj =& parent::prepare($query, $types, $result_types, $lobs);
+            return $obj;
+        }
+        $is_manip = ($result_types === MDB2_PREPARE_MANIP);
+        $offset = $this->offset;
+        $limit = $this->limit;
+        $this->offset = $this->limit = 0;
+        $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
+        $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        $placeholder_type_guess = $placeholder_type = null;
+        $question = '?';
+        $colon = ':';
+        $positions = array();
+        $position = 0;
+        while ($position < strlen($query)) {
+            $q_position = strpos($query, $question, $position);
+            $c_position = strpos($query, $colon, $position);
+            if ($q_position && $c_position) {
+                $p_position = min($q_position, $c_position);
+            } elseif ($q_position) {
+                $p_position = $q_position;
+            } elseif ($c_position) {
+                $p_position = $c_position;
+            } else {
+                break;
+            }
+            if (is_null($placeholder_type)) {
+                $placeholder_type_guess = $query[$p_position];
+            }
+            
+            $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position);
+            if (PEAR::isError($new_pos)) {
+                return $new_pos;
+            }
+            if ($new_pos != $position) {
+                $position = $new_pos;
+                continue; //evaluate again starting from the new position
+            }
+            
+            //make sure this is not part of an user defined variable
+            $new_pos = $this->_skipUserDefinedVariable($query, $position);
+            if ($new_pos != $position) {
+                $position = $new_pos;
+                continue; //evaluate again starting from the new position
+            }
+
+            if ($query[$position] == $placeholder_type_guess) {
+                if (is_null($placeholder_type)) {
+                    $placeholder_type = $query[$p_position];
+                    $question = $colon = $placeholder_type;
+                }
+                if ($placeholder_type == ':') {
+                    $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
+                    $parameter = preg_replace($regexp, '\\1', $query);
+                    if ($parameter === '') {
+                        $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                            'named parameter name must match "bindname_format" option', __FUNCTION__);
+                        return $err;
+                    }
+                    $positions[$p_position] = $parameter;
+                    $query = substr_replace($query, '?', $position, strlen($parameter)+1);
+                } else {
+                    $positions[$p_position] = count($positions);
+                }
+                $position = $p_position + 1;
+            } else {
+                $position = $p_position;
+            }
+        }
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        if (!$is_manip) {
+            static $prep_statement_counter = 1;
+            $statement_name = sprintf($this->options['statement_format'], $this->phptype, sha1(microtime() + mt_rand())) . $prep_statement_counter++;
+            $query = "PREPARE $statement_name FROM ".$this->quote($query, 'text');
+
+            $statement =& $this->_doQuery($query, true, $connection);
+            if (PEAR::isError($statement)) {
+                return $statement;
+            }
+            $statement = $statement_name;
+        } else {
+            $statement = @mysqli_prepare($connection, $query);
+            if (!$statement) {
+                $err =& $this->raiseError(null, null, null,
+                    'Unable to create prepared statement handle', __FUNCTION__);
+                return $err;
+            }
+        }
+
+        $class_name = 'MDB2_Statement_'.$this->phptype;
+        $obj = new $class_name($this, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
+        $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
+        return $obj;
+    }
+
+    // }}}
+    // {{{ replace()
+
+    /**
+     * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
+     * query, except that if there is already a row in the table with the same
+     * key field values, the REPLACE query just updates its values instead of
+     * inserting a new row.
+     *
+     * The REPLACE type of query does not make part of the SQL standards. Since
+     * practically only MySQL implements it natively, this type of query is
+     * emulated through this method for other DBMS using standard types of
+     * queries inside a transaction to assure the atomicity of the operation.
+     *
+     * @access public
+     *
+     * @param string $table name of the table on which the REPLACE query will
+     *  be executed.
+     * @param array $fields associative array that describes the fields and the
+     *  values that will be inserted or updated in the specified table. The
+     *  indexes of the array are the names of all the fields of the table. The
+     *  values of the array are also associative arrays that describe the
+     *  values and other properties of the table fields.
+     *
+     *  Here follows a list of field properties that need to be specified:
+     *
+     *    value:
+     *          Value to be assigned to the specified field. This value may be
+     *          of specified in database independent type format as this
+     *          function can perform the necessary datatype conversions.
+     *
+     *    Default:
+     *          this property is required unless the Null property
+     *          is set to 1.
+     *
+     *    type
+     *          Name of the type of the field. Currently, all types Metabase
+     *          are supported except for clob and blob.
+     *
+     *    Default: no type conversion
+     *
+     *    null
+     *          Boolean property that indicates that the value for this field
+     *          should be set to null.
+     *
+     *          The default value for fields missing in INSERT queries may be
+     *          specified the definition of a table. Often, the default value
+     *          is already null, but since the REPLACE may be emulated using
+     *          an UPDATE query, make sure that all fields of the table are
+     *          listed in this function argument array.
+     *
+     *    Default: 0
+     *
+     *    key
+     *          Boolean property that indicates that this field should be
+     *          handled as a primary key or at least as part of the compound
+     *          unique index of the table that will determine the row that will
+     *          updated if it exists or inserted a new row otherwise.
+     *
+     *          This function will fail if no key field is specified or if the
+     *          value of a key field is set to null because fields that are
+     *          part of unique index they may not be null.
+     *
+     *    Default: 0
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function replace($table, $fields)
+    {
+        $count = count($fields);
+        $query = $values = '';
+        $keys = $colnum = 0;
+        for (reset($fields); $colnum < $count; next($fields), $colnum++) {
+            $name = key($fields);
+            if ($colnum > 0) {
+                $query .= ',';
+                $values.= ',';
+            }
+            $query.= $name;
+            if (isset($fields[$name]['null']) && $fields[$name]['null']) {
+                $value = 'NULL';
+            } else {
+                $type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null;
+                $value = $this->quote($fields[$name]['value'], $type);
+                if (PEAR::isError($value)) {
+                    return $value;
+                }
+            }
+            $values.= $value;
+            if (isset($fields[$name]['key']) && $fields[$name]['key']) {
+                if ($value === 'NULL') {
+                    return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                        'key value '.$name.' may not be NULL', __FUNCTION__);
+                }
+                $keys++;
+            }
+        }
+        if ($keys == 0) {
+            return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                'not specified which fields are keys', __FUNCTION__);
+        }
+
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $query = "REPLACE INTO $table ($query) VALUES ($values)";
+        $result =& $this->_doQuery($query, true, $connection);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return $this->_affectedRows($connection, $result);
+    }
+
+    // }}}
+    // {{{ nextID()
+
+    /**
+     * Returns the next free id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @param boolean $ondemand when true the sequence is
+     *                          automatic created, if it
+     *                          not exists
+     *
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function nextID($seq_name, $ondemand = true)
+    {
+        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+        $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
+        $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL)";
+        $this->expectError(MDB2_ERROR_NOSUCHTABLE);
+        $result =& $this->_doQuery($query, true);
+        $this->popExpect();
+        if (PEAR::isError($result)) {
+            if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
+                $this->loadModule('Manager', null, true);
+                $result = $this->manager->createSequence($seq_name);
+                if (PEAR::isError($result)) {
+                    return $this->raiseError($result, null, null,
+                        'on demand sequence '.$seq_name.' could not be created', __FUNCTION__);
+                } else {
+                    return $this->nextID($seq_name, false);
+                }
+            }
+            return $result;
+        }
+        $value = $this->lastInsertID();
+        if (is_numeric($value)) {
+            $query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value";
+            $result =& $this->_doQuery($query, true);
+            if (PEAR::isError($result)) {
+                $this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
+            }
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ lastInsertID()
+
+    /**
+     * Returns the autoincrement ID if supported or $id or fetches the current
+     * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
+     *
+     * @param string $table name of the table into which a new row was inserted
+     * @param string $field name of the field into which a new row was inserted
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function lastInsertID($table = null, $field = null)
+    {
+        // not using mysql_insert_id() due to http://pear.php.net/bugs/bug.php?id=8051
+        return $this->queryOne('SELECT LAST_INSERT_ID()', 'integer');
+    }
+
+    // }}}
+    // {{{ currID()
+
+    /**
+     * Returns the current id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function currID($seq_name)
+    {
+        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+        $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
+        $query = "SELECT MAX($seqcol_name) FROM $sequence_name";
+        return $this->queryOne($query, 'integer');
+    }
+}
+
+/**
+ * MDB2 MySQLi result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Result_mysqli extends MDB2_Result_Common
+{
+    // }}}
+    // {{{ fetchRow()
+
+    /**
+     * Fetch a row and insert the data into an existing array.
+     *
+     * @param int       $fetchmode  how the array data should be indexed
+     * @param int    $rownum    number of the row where the data can be found
+     * @return int data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+    {
+        if (!is_null($rownum)) {
+            $seek = $this->seek($rownum);
+            if (PEAR::isError($seek)) {
+                return $seek;
+            }
+        }
+        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
+            $fetchmode = $this->db->fetchmode;
+        }
+        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+            $row = @mysqli_fetch_assoc($this->result);
+            if (is_array($row)
+                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+            ) {
+                $row = array_change_key_case($row, $this->db->options['field_case']);
+            }
+        } else {
+           $row = @mysqli_fetch_row($this->result);
+        }
+
+        if (!$row) {
+            if ($this->result === false) {
+                $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+                return $err;
+            }
+            $null = null;
+            return $null;
+        }
+        $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
+        $rtrim = false;
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
+            if (empty($this->types)) {
+                $mode += MDB2_PORTABILITY_RTRIM;
+            } else {
+                $rtrim = true;
+            }
+        }
+        if ($mode) {
+            $this->db->_fixResultArrayValues($row, $mode);
+        }
+        if (!empty($this->types)) {
+            $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
+        }
+        if (!empty($this->values)) {
+            $this->_assignBindColumns($row);
+        }
+        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
+            $object_class = $this->db->options['fetch_class'];
+            if ($object_class == 'stdClass') {
+                $row = (object) $row;
+            } else {
+                $row = &new $object_class($row);
+            }
+        }
+        ++$this->rownum;
+        return $row;
+    }
+
+    // }}}
+    // {{{ _getColumnNames()
+
+    /**
+     * Retrieve the names of columns returned by the DBMS in a query result.
+     *
+     * @return  mixed   Array variable that holds the names of columns as keys
+     *                  or an MDB2 error on failure.
+     *                  Some DBMS may not return any columns when the result set
+     *                  does not contain any rows.
+     * @access private
+     */
+    function _getColumnNames()
+    {
+        $columns = array();
+        $numcols = $this->numCols();
+        if (PEAR::isError($numcols)) {
+            return $numcols;
+        }
+        for ($column = 0; $column < $numcols; $column++) {
+            $column_info = @mysqli_fetch_field_direct($this->result, $column);
+            $columns[$column_info->name] = $column;
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $columns = array_change_key_case($columns, $this->db->options['field_case']);
+        }
+        return $columns;
+    }
+
+    // }}}
+    // {{{ numCols()
+
+    /**
+     * Count the number of columns returned by the DBMS in a query result.
+     *
+     * @return mixed integer value with the number of columns, a MDB2 error
+     *                       on failure
+     * @access public
+     */
+    function numCols()
+    {
+        $cols = @mysqli_num_fields($this->result);
+        if (is_null($cols)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return count($this->types);
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get column count', __FUNCTION__);
+        }
+        return $cols;
+    }
+
+    // }}}
+    // {{{ nextResult()
+
+    /**
+     * Move the internal result pointer to the next available result
+     *
+     * @return true on success, false if there is no more result set or an error object on failure
+     * @access public
+     */
+    function nextResult()
+    {
+        $connection = $this->db->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        if (!@mysqli_more_results($connection)) {
+            return false;
+        }
+        if (!@mysqli_next_result($connection)) {
+            return false;
+        }
+        if (!($this->result = @mysqli_use_result($connection))) {
+            return false;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Free the internal resources associated with result.
+     *
+     * @return boolean true on success, false if result is invalid
+     * @access public
+     */
+    function free()
+    {
+        if (is_object($this->result) && $this->db->connection) {
+            $free = @mysqli_free_result($this->result);
+            if ($free === false) {
+                return $this->db->raiseError(null, null, null,
+                    'Could not free result', __FUNCTION__);
+            }
+        }
+        $this->result = false;
+        return MDB2_OK;
+    }
+}
+
+/**
+ * MDB2 MySQLi buffered result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_BufferedResult_mysqli extends MDB2_Result_mysqli
+{
+    // }}}
+    // {{{ seek()
+
+    /**
+     * Seek to a specific row in a result set
+     *
+     * @param int    $rownum    number of the row where the data can be found
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function seek($rownum = 0)
+    {
+        if ($this->rownum != ($rownum - 1) && !@mysqli_data_seek($this->result, $rownum)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return MDB2_OK;
+            }
+            return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
+                'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
+        }
+        $this->rownum = $rownum - 1;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ valid()
+
+    /**
+     * Check if the end of the result set has been reached
+     *
+     * @return mixed true or false on sucess, a MDB2 error on failure
+     * @access public
+     */
+    function valid()
+    {
+        $numrows = $this->numRows();
+        if (PEAR::isError($numrows)) {
+            return $numrows;
+        }
+        return $this->rownum < ($numrows - 1);
+    }
+
+    // }}}
+    // {{{ numRows()
+
+    /**
+     * Returns the number of rows in a result object
+     *
+     * @return mixed MDB2 Error Object or the number of rows
+     * @access public
+     */
+    function numRows()
+    {
+        $rows = @mysqli_num_rows($this->result);
+        if (is_null($rows)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return 0;
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get row count', __FUNCTION__);
+        }
+        return $rows;
+    }
+
+    // }}}
+    // {{{ nextResult()
+
+    /**
+     * Move the internal result pointer to the next available result
+     *
+     * @param a valid result resource
+     * @return true on success, false if there is no more result set or an error object on failure
+     * @access public
+     */
+    function nextResult()
+    {
+        $connection = $this->db->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        if (!@mysqli_more_results($connection)) {
+            return false;
+        }
+        if (!@mysqli_next_result($connection)) {
+            return false;
+        }
+        if (!($this->result = @mysqli_store_result($connection))) {
+            return false;
+        }
+        return MDB2_OK;
+    }
+}
+
+/**
+ * MDB2 MySQLi statement driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Statement_mysqli extends MDB2_Statement_Common
+{
+    // {{{ _execute()
+
+    /**
+     * Execute a prepared query statement helper method.
+     *
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access private
+     */
+    function &_execute($result_class = true, $result_wrap_class = false)
+    {
+        if (is_null($this->statement)) {
+            $result =& parent::_execute($result_class, $result_wrap_class);
+            return $result;
+        }
+        $this->db->last_query = $this->query;
+        $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values));
+        if ($this->db->getOption('disable_query')) {
+            $result = $this->is_manip ? 0 : null;
+            return $result;
+        }
+
+        $connection = $this->db->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        if (!is_object($this->statement)) {
+            $query = 'EXECUTE '.$this->statement;
+        }
+        if (!empty($this->positions)) {
+            $parameters = array(0 => $this->statement, 1 => '');
+            $lobs = array();
+            $i = 0;
+            foreach ($this->positions as $parameter) {
+                if (!array_key_exists($parameter, $this->values)) {
+                    return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                        'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
+                }
+                $value = $this->values[$parameter];
+                $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
+                if (!is_object($this->statement)) {
+                    if (is_resource($value) || $type == 'clob' || $type == 'blob' && $this->db->options['lob_allow_url_include']) {
+                        if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
+                            if ($match[1] == 'file://') {
+                                $value = $match[2];
+                            }
+                            $value = @fopen($value, 'r');
+                            $close = true;
+                        }
+                        if (is_resource($value)) {
+                            $data = '';
+                            while (!@feof($value)) {
+                                $data.= @fread($value, $this->db->options['lob_buffer_length']);
+                            }
+                            if ($close) {
+                                @fclose($value);
+                            }
+                            $value = $data;
+                        }
+                    }
+                    $quoted = $this->db->quote($value, $type);
+                    if (PEAR::isError($quoted)) {
+                        return $quoted;
+                    }
+                    $param_query = 'SET @'.$parameter.' = '.$quoted;
+                    $result = $this->db->_doQuery($param_query, true, $connection);
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                } else {
+                    if (is_resource($value) || $type == 'clob' || $type == 'blob') {
+                        $parameters[] = null;
+                        $parameters[1].= 'b';
+                        $lobs[$i] = $parameter;
+                    } else {
+                        $quoted = $this->db->quote($value, $type, false);
+                        if (PEAR::isError($quoted)) {
+                            return $quoted;
+                        }
+                        $parameters[] = $quoted;
+                        $parameters[1].= $this->db->datatype->mapPrepareDatatype($type);
+                    }
+                    ++$i;
+                }
+            }
+
+            if (!is_object($this->statement)) {
+                $query.= ' USING @'.implode(', @', array_values($this->positions));
+            } else {
+                $result = @call_user_func_array('mysqli_stmt_bind_param', $parameters);
+                if ($result === false) {
+                    $err =& $this->db->raiseError(null, null, null,
+                        'Unable to bind parameters', __FUNCTION__);
+                    return $err;
+                }
+
+                foreach ($lobs as $i => $parameter) {
+                    $value = $this->values[$parameter];
+                    $close = false;
+                    if (!is_resource($value)) {
+                        $close = true;
+                        if (preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
+                            if ($match[1] == 'file://') {
+                                $value = $match[2];
+                            }
+                            $value = @fopen($value, 'r');
+                        } else {
+                            $fp = @tmpfile();
+                            @fwrite($fp, $value);
+                            @rewind($fp);
+                            $value = $fp;
+                        }
+                    }
+                    while (!@feof($value)) {
+                        $data = @fread($value, $this->db->options['lob_buffer_length']);
+                        @mysqli_stmt_send_long_data($this->statement, $i, $data);
+                    }
+                    if ($close) {
+                        @fclose($value);
+                    }
+                }
+            }
+        }
+
+        if (!is_object($this->statement)) {
+            $result = $this->db->_doQuery($query, $this->is_manip, $connection);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+
+            if ($this->is_manip) {
+                $affected_rows = $this->db->_affectedRows($connection, $result);
+                return $affected_rows;
+            }
+
+            $result =& $this->db->_wrapResult($result, $this->result_types,
+                $result_class, $result_wrap_class, $this->limit, $this->offset);
+        } else {
+            if (!@mysqli_stmt_execute($this->statement)) {
+                $err =& $this->db->raiseError(null, null, null,
+                    'Unable to execute statement', __FUNCTION__);
+                return $err;
+            }
+
+            if ($this->is_manip) {
+                $affected_rows = @mysqli_stmt_affected_rows($this->statement);
+                return $affected_rows;
+            }
+
+            if ($this->db->options['result_buffering']) {
+                @mysqli_stmt_store_result($this->statement);
+            }
+
+            $result =& $this->db->_wrapResult($this->statement, $this->result_types,
+                $result_class, $result_wrap_class, $this->limit, $this->offset);
+        }
+
+        $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result));
+        return $result;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Release resources allocated for the specified prepared query.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function free()
+    {
+        if (is_null($this->positions)) {
+            return $this->db->raiseError(MDB2_ERROR, null, null,
+                'Prepared statement has already been freed', __FUNCTION__);
+        }
+        $result = MDB2_OK;
+
+        if (is_object($this->statement)) {
+            if (!@mysqli_stmt_close($this->statement)) {
+                $result = $this->db->raiseError(null, null, null,
+                    'Could not free statement', __FUNCTION__);
+            }
+        } elseif (!is_null($this->statement)) {
+            $connection = $this->db->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+
+            $query = 'DEALLOCATE PREPARE '.$this->statement;
+            $result = $this->db->_doQuery($query, true, $connection);
+        }
+
+        parent::free();
+        return $result;
+   }
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/pgsql.php b/program/lib/MDB2/Driver/pgsql.php
new file mode 100644
index 0000000..49ab121
--- /dev/null
+++ b/program/lib/MDB2/Driver/pgsql.php
@@ -0,0 +1,1470 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Paul Cooper <pgc@ucecom.com>                                 |
+// +----------------------------------------------------------------------+
+//
+// $Id: pgsql.php,v 1.186 2007/11/10 13:27:03 quipo Exp $
+
+/**
+ * MDB2 PostGreSQL driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Driver_pgsql extends MDB2_Driver_Common
+{
+    // {{{ properties
+    var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => '\\');
+
+    var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"');
+    // }}}
+    // {{{ constructor
+
+    /**
+     * Constructor
+     */
+    function __construct()
+    {
+        parent::__construct();
+
+        $this->phptype = 'pgsql';
+        $this->dbsyntax = 'pgsql';
+
+        $this->supported['sequences'] = true;
+        $this->supported['indexes'] = true;
+        $this->supported['affected_rows'] = true;
+        $this->supported['summary_functions'] = true;
+        $this->supported['order_by_text'] = true;
+        $this->supported['transactions'] = true;
+        $this->supported['savepoints'] = true;
+        $this->supported['current_id'] = true;
+        $this->supported['limit_queries'] = true;
+        $this->supported['LOBs'] = true;
+        $this->supported['replace'] = 'emulated';
+        $this->supported['sub_selects'] = true;
+        $this->supported['auto_increment'] = 'emulated';
+        $this->supported['primary_key'] = true;
+        $this->supported['result_introspection'] = true;
+        $this->supported['prepared_statements'] = true;
+        $this->supported['identifier_quoting'] = true;
+        $this->supported['pattern_escaping'] = true;
+        $this->supported['new_link'] = true;
+
+        $this->options['multi_query'] = false;
+        $this->options['disable_smart_seqname'] = false;
+    }
+
+    // }}}
+    // {{{ errorInfo()
+
+    /**
+     * This method is used to collect information about an error
+     *
+     * @param integer $error
+     * @return array
+     * @access public
+     */
+    function errorInfo($error = null)
+    {
+        // Fall back to MDB2_ERROR if there was no mapping.
+        $error_code = MDB2_ERROR;
+
+        $native_msg = '';
+        if (is_resource($error)) {
+            $native_msg = @pg_result_error($error);
+        } elseif ($this->connection) {
+            $native_msg = @pg_last_error($this->connection);
+            if (!$native_msg && @pg_connection_status($this->connection) === PGSQL_CONNECTION_BAD) {
+                $native_msg = 'Database connection has been lost.';
+                $error_code = MDB2_ERROR_CONNECT_FAILED;
+            }
+        }
+
+        static $error_regexps;
+        if (empty($error_regexps)) {
+            $error_regexps = array(
+                '/column .* (of relation .*)?does not exist/i'
+                    => MDB2_ERROR_NOSUCHFIELD,
+                '/(relation|sequence|table).*does not exist|class .* not found/i'
+                    => MDB2_ERROR_NOSUCHTABLE,
+                '/index .* does not exist/'
+                    => MDB2_ERROR_NOT_FOUND,
+                '/relation .* already exists/i'
+                    => MDB2_ERROR_ALREADY_EXISTS,
+                '/(divide|division) by zero$/i'
+                    => MDB2_ERROR_DIVZERO,
+                '/pg_atoi: error in .*: can\'t parse /i'
+                    => MDB2_ERROR_INVALID_NUMBER,
+                '/invalid input syntax for( type)? (integer|numeric)/i'
+                    => MDB2_ERROR_INVALID_NUMBER,
+                '/value .* is out of range for type \w*int/i'
+                    => MDB2_ERROR_INVALID_NUMBER,
+                '/integer out of range/i'
+                    => MDB2_ERROR_INVALID_NUMBER,
+                '/value too long for type character/i'
+                    => MDB2_ERROR_INVALID,
+                '/attribute .* not found|relation .* does not have attribute/i'
+                    => MDB2_ERROR_NOSUCHFIELD,
+                '/column .* specified in USING clause does not exist in (left|right) table/i'
+                    => MDB2_ERROR_NOSUCHFIELD,
+                '/parser: parse error at or near/i'
+                    => MDB2_ERROR_SYNTAX,
+                '/syntax error at/'
+                    => MDB2_ERROR_SYNTAX,
+                '/column reference .* is ambiguous/i'
+                    => MDB2_ERROR_SYNTAX,
+                '/permission denied/'
+                    => MDB2_ERROR_ACCESS_VIOLATION,
+                '/violates not-null constraint/'
+                    => MDB2_ERROR_CONSTRAINT_NOT_NULL,
+                '/violates [\w ]+ constraint/'
+                    => MDB2_ERROR_CONSTRAINT,
+                '/referential integrity violation/'
+                    => MDB2_ERROR_CONSTRAINT,
+                '/more expressions than target columns/i'
+                    => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+            );
+        }
+        if (is_numeric($error) && $error < 0) {
+            $error_code = $error;
+        } else {
+            foreach ($error_regexps as $regexp => $code) {
+                if (preg_match($regexp, $native_msg)) {
+                    $error_code = $code;
+                    break;
+                }
+            }
+        }
+        return array($error_code, null, $native_msg);
+    }
+
+    // }}}
+    // {{{ escape()
+
+    /**
+     * Quotes a string so it can be safely used in a query. It will quote
+     * the text so it can safely be used within a query.
+     *
+     * @param   string  the input string to quote
+     * @param   bool    escape wildcards
+     *
+     * @return  string  quoted string
+     *
+     * @access  public
+     */
+    function escape($text, $escape_wildcards = false)
+    {
+        if ($escape_wildcards) {
+            $text = $this->escapePattern($text);
+        }
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+        if (version_compare(PHP_VERSION, '5.2.0RC5', '>=')) {
+            $text = @pg_escape_string($connection, $text);
+        } else {
+            $text = @pg_escape_string($text);
+        }
+        return $text;
+    }
+
+    // }}}
+    // {{{ beginTransaction()
+
+    /**
+     * Start a transaction or set a savepoint.
+     *
+     * @param   string  name of a savepoint to set
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function beginTransaction($savepoint = null)
+    {
+        $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!is_null($savepoint)) {
+            if (!$this->in_transaction) {
+                return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                    'savepoint cannot be released when changes are auto committed', __FUNCTION__);
+            }
+            $query = 'SAVEPOINT '.$savepoint;
+            return $this->_doQuery($query, true);
+        } elseif ($this->in_transaction) {
+            return MDB2_OK;  //nothing to do
+        }
+        if (!$this->destructor_registered && $this->opened_persistent) {
+            $this->destructor_registered = true;
+            register_shutdown_function('MDB2_closeOpenTransactions');
+        }
+        $result =& $this->_doQuery('BEGIN', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = true;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ commit()
+
+    /**
+     * Commit the database changes done during a transaction that is in
+     * progress or release a savepoint. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after committing the pending changes.
+     *
+     * @param   string  name of a savepoint to release
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function commit($savepoint = null)
+    {
+        $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            $query = 'RELEASE SAVEPOINT '.$savepoint;
+            return $this->_doQuery($query, true);
+        }
+
+        $result =& $this->_doQuery('COMMIT', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ rollback()
+
+    /**
+     * Cancel any database changes done during a transaction or since a specific
+     * savepoint that is in progress. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after canceling the pending changes.
+     *
+     * @param   string  name of a savepoint to rollback to
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function rollback($savepoint = null)
+    {
+        $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'rollback cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            $query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
+            return $this->_doQuery($query, true);
+        }
+
+        $query = 'ROLLBACK';
+        $result =& $this->_doQuery($query, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function setTransactionIsolation()
+
+    /**
+     * Set the transacton isolation level.
+     *
+     * @param   string  standard isolation level
+     *                  READ UNCOMMITTED (allows dirty reads)
+     *                  READ COMMITTED (prevents dirty reads)
+     *                  REPEATABLE READ (prevents nonrepeatable reads)
+     *                  SERIALIZABLE (prevents phantom reads)
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     * @since   2.1.1
+     */
+    function setTransactionIsolation($isolation)
+    {
+        $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
+        switch ($isolation) {
+        case 'READ UNCOMMITTED':
+        case 'READ COMMITTED':
+        case 'REPEATABLE READ':
+        case 'SERIALIZABLE':
+            break;
+        default:
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'isolation level is not supported: '.$isolation, __FUNCTION__);
+        }
+
+        $query = "SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL $isolation";
+        return $this->_doQuery($query, true);
+    }
+
+    // }}}
+    // {{{ _doConnect()
+
+    /**
+     * Does the grunt work of connecting to the database
+     *
+     * @return mixed connection resource on success, MDB2 Error Object on failure
+     * @access protected
+     **/
+    function _doConnect($database_name, $persistent = false)
+    {
+        if ($database_name == '') {
+            $database_name = 'template1';
+        }
+
+        $protocol = $this->dsn['protocol'] ? $this->dsn['protocol'] : 'tcp';
+
+        $params = array('');
+        if ($protocol == 'tcp') {
+            if ($this->dsn['hostspec']) {
+                $params[0].= 'host=' . $this->dsn['hostspec'];
+            }
+            if ($this->dsn['port']) {
+                $params[0].= ' port=' . $this->dsn['port'];
+            }
+        } elseif ($protocol == 'unix') {
+            // Allow for pg socket in non-standard locations.
+            if ($this->dsn['socket']) {
+                $params[0].= 'host=' . $this->dsn['socket'];
+            }
+            if ($this->dsn['port']) {
+                $params[0].= ' port=' . $this->dsn['port'];
+            }
+        }
+        if ($database_name) {
+            $params[0].= ' dbname=\'' . addslashes($database_name) . '\'';
+        }
+        if ($this->dsn['username']) {
+            $params[0].= ' user=\'' . addslashes($this->dsn['username']) . '\'';
+        }
+        if ($this->dsn['password']) {
+            $params[0].= ' password=\'' . addslashes($this->dsn['password']) . '\'';
+        }
+        if (!empty($this->dsn['options'])) {
+            $params[0].= ' options=' . $this->dsn['options'];
+        }
+        if (!empty($this->dsn['tty'])) {
+            $params[0].= ' tty=' . $this->dsn['tty'];
+        }
+        if (!empty($this->dsn['connect_timeout'])) {
+            $params[0].= ' connect_timeout=' . $this->dsn['connect_timeout'];
+        }
+        if (!empty($this->dsn['sslmode'])) {
+            $params[0].= ' sslmode=' . $this->dsn['sslmode'];
+        }
+        if (!empty($this->dsn['service'])) {
+            $params[0].= ' service=' . $this->dsn['service'];
+        }
+
+        if (!empty($this->dsn['new_link'])
+            && ($this->dsn['new_link'] == 'true' || $this->dsn['new_link'] === true))
+        {
+            if (version_compare(phpversion(), '4.3.0', '>=')) {
+                $params[] = PGSQL_CONNECT_FORCE_NEW;
+            }
+        }
+
+        $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect';
+
+        $connection = @call_user_func_array($connect_function, $params);
+        if (!$connection) {
+            return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
+                'unable to establish a connection', __FUNCTION__);
+        }
+
+       if (empty($this->dsn['disable_iso_date'])) {
+            if (!@pg_query($connection, "SET SESSION DATESTYLE = 'ISO'")) {
+                return $this->raiseError(null, null, null,
+                    'Unable to set date style to iso', __FUNCTION__);
+            }
+       }
+
+        if (!empty($this->dsn['charset'])) {
+            $result = $this->setCharset($this->dsn['charset'], $connection);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+
+        return $connection;
+    }
+
+    // }}}
+    // {{{ connect()
+
+    /**
+     * Connect to the database
+     *
+     * @return true on success, MDB2 Error Object on failure
+     * @access public
+     **/
+    function connect()
+    {
+        if (is_resource($this->connection)) {
+            //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
+            if (MDB2::areEquals($this->connected_dsn, $this->dsn)
+                && $this->connected_database_name == $this->database_name
+                && ($this->opened_persistent == $this->options['persistent'])
+            ) {
+                return MDB2_OK;
+            }
+            $this->disconnect(false);
+        }
+
+        if (!PEAR::loadExtension($this->phptype)) {
+            return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
+        }
+
+        if ($this->database_name) {
+            $connection = $this->_doConnect($this->database_name, $this->options['persistent']);
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+            $this->connection = $connection;
+            $this->connected_dsn = $this->dsn;
+            $this->connected_database_name = $this->database_name;
+            $this->opened_persistent = $this->options['persistent'];
+            $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ setCharset()
+
+    /**
+     * Set the charset on the current connection
+     *
+     * @param string    charset
+     * @param resource  connection handle
+     *
+     * @return true on success, MDB2 Error Object on failure
+     */
+    function setCharset($charset, $connection = null)
+    {
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+
+        $result = @pg_set_client_encoding($connection, $charset);
+        if ($result == -1) {
+            return $this->raiseError(null, null, null,
+                'Unable to set client charset: '.$charset, __FUNCTION__);
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ disconnect()
+
+    /**
+     * Log out and disconnect from the database.
+     *
+     * @param  boolean $force if the disconnect should be forced even if the
+     *                        connection is opened persistently
+     * @return mixed true on success, false if not connected and error
+     *                object on error
+     * @access public
+     */
+    function disconnect($force = true)
+    {
+        if (is_resource($this->connection)) {
+            if ($this->in_transaction) {
+                $dsn = $this->dsn;
+                $database_name = $this->database_name;
+                $persistent = $this->options['persistent'];
+                $this->dsn = $this->connected_dsn;
+                $this->database_name = $this->connected_database_name;
+                $this->options['persistent'] = $this->opened_persistent;
+                $this->rollback();
+                $this->dsn = $dsn;
+                $this->database_name = $database_name;
+                $this->options['persistent'] = $persistent;
+            }
+
+            if (!$this->opened_persistent || $force) {
+                @pg_close($this->connection);
+            }
+        }
+        return parent::disconnect($force);
+    }
+
+    // }}}
+    // {{{ standaloneQuery()
+
+   /**
+     * execute a query as DBA
+     *
+     * @param string $query the SQL query
+     * @param mixed   $types  array that contains the types of the columns in
+     *                        the result set
+     * @param boolean $is_manip  if the query is a manipulation query
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function &standaloneQuery($query, $types = null, $is_manip = false)
+    {
+        $connection = $this->_doConnect('template1', false);
+        if (PEAR::isError($connection)) {
+            $err =& $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
+                'Cannot connect to template1', __FUNCTION__);
+            return $err;
+        }
+
+        $offset = $this->offset;
+        $limit = $this->limit;
+        $this->offset = $this->limit = 0;
+        $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
+
+        $result =& $this->_doQuery($query, $is_manip, $connection, false);
+        @pg_close($connection);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($is_manip) {
+            $affected_rows =  $this->_affectedRows($connection, $result);
+            return $affected_rows;
+        }
+        $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset);
+        return $result;
+    }
+
+    // }}}
+    // {{{ _doQuery()
+
+    /**
+     * Execute a query
+     * @param string $query  query
+     * @param boolean $is_manip  if the query is a manipulation query
+     * @param resource $connection
+     * @param string $database_name
+     * @return result or error object
+     * @access protected
+     */
+    function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
+    {
+        $this->last_query = $query;
+        $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        if ($this->options['disable_query']) {
+            $result = $is_manip ? 0 : null;
+            return $result;
+        }
+
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+
+        $function = $this->options['multi_query'] ? 'pg_send_query' : 'pg_query';
+        $result = @$function($connection, $query);
+        if (!$result) {
+            $err =& $this->raiseError(null, null, null,
+                'Could not execute statement', __FUNCTION__);
+            return $err;
+        } elseif ($this->options['multi_query']) {
+            if (!($result = @pg_get_result($connection))) {
+                $err =& $this->raiseError(null, null, null,
+                        'Could not get the first result from a multi query', __FUNCTION__);
+                return $err;
+            }
+        }
+
+        $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
+        return $result;
+    }
+
+    // }}}
+    // {{{ _affectedRows()
+
+    /**
+     * Returns the number of rows affected
+     *
+     * @param resource $result
+     * @param resource $connection
+     * @return mixed MDB2 Error Object or the number of rows affected
+     * @access private
+     */
+    function _affectedRows($connection, $result = null)
+    {
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        return @pg_affected_rows($result);
+    }
+
+    // }}}
+    // {{{ _modifyQuery()
+
+    /**
+     * Changes a query string for various DBMS specific reasons
+     *
+     * @param string $query  query to modify
+     * @param boolean $is_manip  if it is a DML query
+     * @param integer $limit  limit the number of rows
+     * @param integer $offset  start reading from given offset
+     * @return string modified query
+     * @access protected
+     */
+    function _modifyQuery($query, $is_manip, $limit, $offset)
+    {
+        if ($limit > 0
+            && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
+        ) {
+            $query = rtrim($query);
+            if (substr($query, -1) == ';') {
+                $query = substr($query, 0, -1);
+            }
+            if ($is_manip) {
+                $query = $this->_modifyManipQuery($query, $limit);
+            } else {
+                $query.= " LIMIT $limit OFFSET $offset";
+            }
+        }
+        return $query;
+    }
+    
+    // }}}
+    // {{{ _modifyManipQuery()
+    
+    /**
+     * Changes a manip query string for various DBMS specific reasons
+     *
+     * @param string $query  query to modify
+     * @param integer $limit  limit the number of rows
+     * @return string modified query
+     * @access protected
+     */
+    function _modifyManipQuery($query, $limit)
+    {
+        $pos = strpos(strtolower($query), 'where');
+        $where = $pos ? substr($query, $pos) : '';
+
+        $manip_clause = '(\bDELETE\b\s+(?:\*\s+)?\bFROM\b|\bUPDATE\b)';
+        $from_clause  = '([\w\.]+)';
+        $where_clause = '(?:(.*)\bWHERE\b\s+(.*))|(.*)';
+        $pattern = '/^'. $manip_clause . '\s+' . $from_clause .'(?:\s)*(?:'. $where_clause .')?$/i';
+        $matches = preg_match($pattern, $query, $match);
+        if ($matches) {
+            $manip = $match[1];
+            $from  = $match[2];
+            $what  = (count($matches) == 6) ? $match[5] : $match[3];
+            return $manip.' '.$from.' '.$what.' WHERE ctid=(SELECT ctid FROM '.$from.' '.$where.' LIMIT '.$limit.')';
+        }
+        //return error?
+        return $query;
+    }
+
+    // }}}
+    // {{{ getServerVersion()
+
+    /**
+     * return version information about the server
+     *
+     * @param bool   $native  determines if the raw version string should be returned
+     * @return mixed array/string with version information or MDB2 error object
+     * @access public
+     */
+    function getServerVersion($native = false)
+    {
+        $query = 'SHOW SERVER_VERSION';
+        if ($this->connected_server_info) {
+            $server_info = $this->connected_server_info;
+        } else {
+            $server_info = $this->queryOne($query, 'text');
+            if (PEAR::isError($server_info)) {
+                return $server_info;
+            }
+        }
+        // cache server_info
+        $this->connected_server_info = $server_info;
+        if (!$native && !PEAR::isError($server_info)) {
+            $tmp = explode('.', $server_info, 3);
+            if (empty($tmp[2])
+                && isset($tmp[1])
+                && preg_match('/(\d+)(.*)/', $tmp[1], $tmp2)
+            ) {
+                $server_info = array(
+                    'major' => $tmp[0],
+                    'minor' => $tmp2[1],
+                    'patch' => null,
+                    'extra' => $tmp2[2],
+                    'native' => $server_info,
+                );
+            } else {
+                $server_info = array(
+                    'major' => isset($tmp[0]) ? $tmp[0] : null,
+                    'minor' => isset($tmp[1]) ? $tmp[1] : null,
+                    'patch' => isset($tmp[2]) ? $tmp[2] : null,
+                    'extra' => null,
+                    'native' => $server_info,
+                );
+            }
+        }
+        return $server_info;
+    }
+
+    // }}}
+    // {{{ prepare()
+
+    /**
+     * Prepares a query for multiple execution with execute().
+     * With some database backends, this is emulated.
+     * prepare() requires a generic query as string like
+     * 'INSERT INTO numbers VALUES(?,?)' or
+     * 'INSERT INTO numbers VALUES(:foo,:bar)'.
+     * The ? and :name and are placeholders which can be set using
+     * bindParam() and the query can be sent off using the execute() method.
+     * The allowed format for :name can be set with the 'bindname_format' option.
+     *
+     * @param string $query the query to prepare
+     * @param mixed   $types  array that contains the types of the placeholders
+     * @param mixed   $result_types  array that contains the types of the columns in
+     *                        the result set or MDB2_PREPARE_RESULT, if set to
+     *                        MDB2_PREPARE_MANIP the query is handled as a manipulation query
+     * @param mixed   $lobs   key (field) value (parameter) pair for all lob placeholders
+     * @return mixed resource handle for the prepared query on success, a MDB2
+     *        error on failure
+     * @access public
+     * @see bindParam, execute
+     */
+    function &prepare($query, $types = null, $result_types = null, $lobs = array())
+    {
+        if ($this->options['emulate_prepared']) {
+            $obj =& parent::prepare($query, $types, $result_types, $lobs);
+            return $obj;
+        }
+        $is_manip = ($result_types === MDB2_PREPARE_MANIP);
+        $offset = $this->offset;
+        $limit = $this->limit;
+        $this->offset = $this->limit = 0;
+        $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        $pgtypes = function_exists('pg_prepare') ? false : array();
+        if ($pgtypes !== false && !empty($types)) {
+            $this->loadModule('Datatype', null, true);
+        }
+        $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
+        $placeholder_type_guess = $placeholder_type = null;
+        $question = '?';
+        $colon = ':';
+        $positions = array();
+        $position = $parameter = 0;
+        while ($position < strlen($query)) {
+            $q_position = strpos($query, $question, $position);
+            $c_position = strpos($query, $colon, $position);
+            //skip "::type" cast ("select id::varchar(20) from sometable where name=?")
+            $doublecolon_position = strpos($query, '::', $position);
+            if ($doublecolon_position !== false && $doublecolon_position == $c_position) {
+                $c_position = strpos($query, $colon, $position+2);
+            }
+            if ($q_position && $c_position) {
+                $p_position = min($q_position, $c_position);
+            } elseif ($q_position) {
+                $p_position = $q_position;
+            } elseif ($c_position) {
+                $p_position = $c_position;
+            } else {
+                break;
+            }
+            if (is_null($placeholder_type)) {
+                $placeholder_type_guess = $query[$p_position];
+            }
+            
+            $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position);
+            if (PEAR::isError($new_pos)) {
+                return $new_pos;
+            }
+            if ($new_pos != $position) {
+                $position = $new_pos;
+                continue; //evaluate again starting from the new position
+            }
+
+            if ($query[$position] == $placeholder_type_guess) {
+                if (is_null($placeholder_type)) {
+                    $placeholder_type = $query[$p_position];
+                    $question = $colon = $placeholder_type;
+                    if (!empty($types) && is_array($types)) {
+                        if ($placeholder_type == ':') {
+                        } else {
+                            $types = array_values($types);
+                        }
+                    }
+                }
+                if ($placeholder_type_guess == '?') {
+                    $length = 1;
+                    $name = $parameter;
+                } else {
+                    $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
+                    $param = preg_replace($regexp, '\\1', $query);
+                    if ($param === '') {
+                        $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                            'named parameter name must match "bindname_format" option', __FUNCTION__);
+                        return $err;
+                    }
+                    $length = strlen($param) + 1;
+                    $name = $param;
+                }
+                if ($pgtypes !== false) {
+                    if (is_array($types) && array_key_exists($name, $types)) {
+                        $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$name]);
+                    } elseif (is_array($types) && array_key_exists($parameter, $types)) {
+                        $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$parameter]);
+                    } else {
+                        $pgtypes[] = 'text';
+                    }
+                }
+                if (($key_parameter = array_search($name, $positions))) {
+                    $next_parameter = 1;
+                    foreach ($positions as $key => $value) {
+                        if ($key_parameter == $key) {
+                            break;
+                        }
+                        ++$next_parameter;
+                    }
+                } else {
+                    ++$parameter;
+                    $next_parameter = $parameter;
+                    $positions[] = $name;
+                }
+                $query = substr_replace($query, '$'.$parameter, $position, $length);
+                $position = $p_position + strlen($parameter);
+            } else {
+                $position = $p_position;
+            }
+        }
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+        static $prep_statement_counter = 1;
+        $statement_name = sprintf($this->options['statement_format'], $this->phptype, sha1(microtime() + mt_rand())) . $prep_statement_counter++;
+        $statement_name = strtolower($statement_name);
+        if ($pgtypes === false) {
+            $result = @pg_prepare($connection, $statement_name, $query);
+            if (!$result) {
+                $err =& $this->raiseError(null, null, null,
+                    'Unable to create prepared statement handle', __FUNCTION__);
+                return $err;
+            }
+        } else {
+            $types_string = '';
+            if ($pgtypes) {
+                $types_string = ' ('.implode(', ', $pgtypes).') ';
+            }
+            $query = 'PREPARE '.$statement_name.$types_string.' AS '.$query;
+            $statement =& $this->_doQuery($query, true, $connection);
+            if (PEAR::isError($statement)) {
+                return $statement;
+            }
+        }
+
+        $class_name = 'MDB2_Statement_'.$this->phptype;
+        $obj = new $class_name($this, $statement_name, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
+        $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
+        return $obj;
+    }
+
+    // }}}
+    // {{{ function getSequenceName($sqn)
+
+    /**
+     * adds sequence name formatting to a sequence name
+     *
+     * @param   string  name of the sequence
+     *
+     * @return  string  formatted sequence name
+     *
+     * @access  public
+     */
+    function getSequenceName($sqn)
+    {
+        if (false === $this->options['disable_smart_seqname']) {
+            if (strpos($sqn, '_') !== false) {
+                list($table, $field) = explode('_', $sqn, 2);
+            }
+            $schema_list = $this->queryOne("SELECT array_to_string(current_schemas(false), ',')");
+            if (PEAR::isError($schema_list) || empty($schema_list) || count($schema_list) < 2) {
+                $order_by = ' a.attnum';
+                $schema_clause = ' AND n.nspname=current_schema()';
+            } else {
+                $schemas = explode(',', $schema_list);
+                $schema_clause = ' AND n.nspname IN ('.$schema_list.')';
+                $counter = 1;
+                $order_by = ' CASE ';
+                foreach ($schemas as $schema) {
+                    $order_by .= ' WHEN n.nspname='.$schema.' THEN '.$counter++;
+                }
+                $order_by .= ' ELSE '.$counter.' END, a.attnum';
+            }
+
+            $query = "SELECT substring((SELECT substring(pg_get_expr(d.adbin, d.adrelid) for 128)
+                    	    FROM pg_attrdef d
+                    	   WHERE d.adrelid = a.attrelid
+                    	     AND d.adnum = a.attnum
+                    	     AND a.atthasdef
+                    	 ) FROM 'nextval[^\']*\'([^\']*)')
+                        FROM pg_attribute a
+                    LEFT JOIN pg_class c ON c.oid = a.attrelid
+                    LEFT JOIN pg_attrdef d ON d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef
+                    LEFT JOIN pg_namespace n ON c.relnamespace = n.oid
+                       WHERE (c.relname = ".$this->quote($sqn, 'text');
+            if (!empty($field)) {
+                $query .= " OR (c.relname = ".$this->quote($table, 'text')." AND a.attname = ".$this->quote($field, 'text').")";
+            }
+            $query .= "      )"
+                         .$schema_clause."
+                         AND NOT a.attisdropped
+                         AND a.attnum > 0
+                         AND pg_get_expr(d.adbin, d.adrelid) LIKE 'nextval%'
+                    ORDER BY ".$order_by;
+            $seqname = $this->queryOne($query);
+            if (!PEAR::isError($seqname) && !empty($seqname) && is_string($seqname)) {
+                return $seqname;
+            }
+        }
+
+        return sprintf($this->options['seqname_format'],
+            preg_replace('/[^\w\$.]/i', '_', $sqn));
+    }
+
+    // }}}
+    // {{{ nextID()
+
+    /**
+     * Returns the next free id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @param boolean $ondemand when true the sequence is
+     *                          automatic created, if it
+     *                          not exists
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function nextID($seq_name, $ondemand = true)
+    {
+        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+        $query = "SELECT NEXTVAL('$sequence_name')";
+        $this->expectError(MDB2_ERROR_NOSUCHTABLE);
+        $result = $this->queryOne($query, 'integer');
+        $this->popExpect();
+        if (PEAR::isError($result)) {
+            if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
+                $this->loadModule('Manager', null, true);
+                $result = $this->manager->createSequence($seq_name);
+                if (PEAR::isError($result)) {
+                    return $this->raiseError($result, null, null,
+                        'on demand sequence could not be created', __FUNCTION__);
+                }
+                return $this->nextId($seq_name, false);
+            }
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ lastInsertID()
+
+    /**
+     * Returns the autoincrement ID if supported or $id or fetches the current
+     * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
+     *
+     * @param string $table name of the table into which a new row was inserted
+     * @param string $field name of the field into which a new row was inserted
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function lastInsertID($table = null, $field = null)
+    {
+        if (empty($table) && empty($field)) {
+            return $this->queryOne('SELECT lastval()', 'integer');
+        }
+        $seq = $table.(empty($field) ? '' : '_'.$field);
+        $sequence_name = $this->getSequenceName($seq);
+        return $this->queryOne("SELECT currval('$sequence_name')", 'integer');
+    }
+
+    // }}}
+    // {{{ currID()
+
+    /**
+     * Returns the current id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function currID($seq_name)
+    {
+        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+        return $this->queryOne("SELECT last_value FROM $sequence_name", 'integer');
+    }
+}
+
+/**
+ * MDB2 PostGreSQL result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Result_pgsql extends MDB2_Result_Common
+{
+    // }}}
+    // {{{ fetchRow()
+
+    /**
+     * Fetch a row and insert the data into an existing array.
+     *
+     * @param int       $fetchmode  how the array data should be indexed
+     * @param int    $rownum    number of the row where the data can be found
+     * @return int data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+    {
+        if (!is_null($rownum)) {
+            $seek = $this->seek($rownum);
+            if (PEAR::isError($seek)) {
+                return $seek;
+            }
+        }
+        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
+            $fetchmode = $this->db->fetchmode;
+        }
+        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+            $row = @pg_fetch_array($this->result, null, PGSQL_ASSOC);
+            if (is_array($row)
+                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+            ) {
+                $row = array_change_key_case($row, $this->db->options['field_case']);
+            }
+        } else {
+            $row = @pg_fetch_row($this->result);
+        }
+        if (!$row) {
+            if ($this->result === false) {
+                $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+                return $err;
+            }
+            $null = null;
+            return $null;
+        }
+        $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
+        $rtrim = false;
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
+            if (empty($this->types)) {
+                $mode += MDB2_PORTABILITY_RTRIM;
+            } else {
+                $rtrim = true;
+            }
+        }
+        if ($mode) {
+            $this->db->_fixResultArrayValues($row, $mode);
+        }
+        if (!empty($this->types)) {
+            $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
+        }
+        if (!empty($this->values)) {
+            $this->_assignBindColumns($row);
+        }
+        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
+            $object_class = $this->db->options['fetch_class'];
+            if ($object_class == 'stdClass') {
+                $row = (object) $row;
+            } else {
+                $row = &new $object_class($row);
+            }
+        }
+        ++$this->rownum;
+        return $row;
+    }
+
+    // }}}
+    // {{{ _getColumnNames()
+
+    /**
+     * Retrieve the names of columns returned by the DBMS in a query result.
+     *
+     * @return  mixed   Array variable that holds the names of columns as keys
+     *                  or an MDB2 error on failure.
+     *                  Some DBMS may not return any columns when the result set
+     *                  does not contain any rows.
+     * @access private
+     */
+    function _getColumnNames()
+    {
+        $columns = array();
+        $numcols = $this->numCols();
+        if (PEAR::isError($numcols)) {
+            return $numcols;
+        }
+        for ($column = 0; $column < $numcols; $column++) {
+            $column_name = @pg_field_name($this->result, $column);
+            $columns[$column_name] = $column;
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $columns = array_change_key_case($columns, $this->db->options['field_case']);
+        }
+        return $columns;
+    }
+
+    // }}}
+    // {{{ numCols()
+
+    /**
+     * Count the number of columns returned by the DBMS in a query result.
+     *
+     * @access public
+     * @return mixed integer value with the number of columns, a MDB2 error
+     *                       on failure
+     */
+    function numCols()
+    {
+        $cols = @pg_num_fields($this->result);
+        if (is_null($cols)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return count($this->types);
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get column count', __FUNCTION__);
+        }
+        return $cols;
+    }
+
+    // }}}
+    // {{{ nextResult()
+
+    /**
+     * Move the internal result pointer to the next available result
+     *
+     * @return true on success, false if there is no more result set or an error object on failure
+     * @access public
+     */
+    function nextResult()
+    {
+        $connection = $this->db->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        if (!($this->result = @pg_get_result($connection))) {
+            return false;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Free the internal resources associated with result.
+     *
+     * @return boolean true on success, false if result is invalid
+     * @access public
+     */
+    function free()
+    {
+        if (is_resource($this->result) && $this->db->connection) {
+            $free = @pg_free_result($this->result);
+            if ($free === false) {
+                return $this->db->raiseError(null, null, null,
+                    'Could not free result', __FUNCTION__);
+            }
+        }
+        $this->result = false;
+        return MDB2_OK;
+    }
+}
+
+/**
+ * MDB2 PostGreSQL buffered result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_BufferedResult_pgsql extends MDB2_Result_pgsql
+{
+    // {{{ seek()
+
+    /**
+     * Seek to a specific row in a result set
+     *
+     * @param int    $rownum    number of the row where the data can be found
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function seek($rownum = 0)
+    {
+        if ($this->rownum != ($rownum - 1) && !@pg_result_seek($this->result, $rownum)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return MDB2_OK;
+            }
+            return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
+                'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
+        }
+        $this->rownum = $rownum - 1;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ valid()
+
+    /**
+     * Check if the end of the result set has been reached
+     *
+     * @return mixed true or false on sucess, a MDB2 error on failure
+     * @access public
+     */
+    function valid()
+    {
+        $numrows = $this->numRows();
+        if (PEAR::isError($numrows)) {
+            return $numrows;
+        }
+        return $this->rownum < ($numrows - 1);
+    }
+
+    // }}}
+    // {{{ numRows()
+
+    /**
+     * Returns the number of rows in a result object
+     *
+     * @return mixed MDB2 Error Object or the number of rows
+     * @access public
+     */
+    function numRows()
+    {
+        $rows = @pg_num_rows($this->result);
+        if (is_null($rows)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return 0;
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get row count', __FUNCTION__);
+        }
+        return $rows;
+    }
+}
+
+/**
+ * MDB2 PostGreSQL statement driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Statement_pgsql extends MDB2_Statement_Common
+{
+    // {{{ _execute()
+
+    /**
+     * Execute a prepared query statement helper method.
+     *
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access private
+     */
+    function &_execute($result_class = true, $result_wrap_class = false)
+    {
+        if (is_null($this->statement)) {
+            $result =& parent::_execute($result_class, $result_wrap_class);
+            return $result;
+        }
+        $this->db->last_query = $this->query;
+        $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values));
+        if ($this->db->getOption('disable_query')) {
+            $result = $this->is_manip ? 0 : null;
+            return $result;
+        }
+
+        $connection = $this->db->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $query = false;
+        $parameters = array();
+        // todo: disabled until pg_execute() bytea issues are cleared up
+        if (true || !function_exists('pg_execute')) {
+            $query = 'EXECUTE '.$this->statement;
+        }
+        if (!empty($this->positions)) {
+            foreach ($this->positions as $parameter) {
+                if (!array_key_exists($parameter, $this->values)) {
+                    return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                        'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
+                }
+                $value = $this->values[$parameter];
+                $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
+                if (is_resource($value) || $type == 'clob' || $type == 'blob' || $this->db->options['lob_allow_url_include']) {
+                    if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
+                        if ($match[1] == 'file://') {
+                            $value = $match[2];
+                        }
+                        $value = @fopen($value, 'r');
+                        $close = true;
+                    }
+                    if (is_resource($value)) {
+                        $data = '';
+                        while (!@feof($value)) {
+                            $data.= @fread($value, $this->db->options['lob_buffer_length']);
+                        }
+                        if ($close) {
+                            @fclose($value);
+                        }
+                        $value = $data;
+                    }
+                }
+                $quoted = $this->db->quote($value, $type, $query);
+                if (PEAR::isError($quoted)) {
+                    return $quoted;
+                }
+                $parameters[] = $quoted;
+            }
+            if ($query) {
+                $query.= ' ('.implode(', ', $parameters).')';
+            }
+        }
+
+        if (!$query) {
+            $result = @pg_execute($connection, $this->statement, $parameters);
+            if (!$result) {
+                $err =& $this->db->raiseError(null, null, null,
+                    'Unable to execute statement', __FUNCTION__);
+                return $err;
+            }
+        } else {
+            $result = $this->db->_doQuery($query, $this->is_manip, $connection);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+
+        if ($this->is_manip) {
+            $affected_rows = $this->db->_affectedRows($connection, $result);
+            return $affected_rows;
+        }
+
+        $result =& $this->db->_wrapResult($result, $this->result_types,
+            $result_class, $result_wrap_class, $this->limit, $this->offset);
+        $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result));
+        return $result;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Release resources allocated for the specified prepared query.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function free()
+    {
+        if (is_null($this->positions)) {
+            return $this->db->raiseError(MDB2_ERROR, null, null,
+                'Prepared statement has already been freed', __FUNCTION__);
+        }
+        $result = MDB2_OK;
+
+        if (!is_null($this->statement)) {
+            $connection = $this->db->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+            $query = 'DEALLOCATE PREPARE '.$this->statement;
+            $result = $this->db->_doQuery($query, true, $connection);
+        }
+
+        parent::free();
+        return $result;
+    }
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/sqlite.php b/program/lib/MDB2/Driver/sqlite.php
new file mode 100644
index 0000000..d612553
--- /dev/null
+++ b/program/lib/MDB2/Driver/sqlite.php
@@ -0,0 +1,1078 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: sqlite.php,v 1.152 2007/11/27 07:44:41 quipo Exp $
+//
+
+/**
+ * MDB2 SQLite driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_sqlite extends MDB2_Driver_Common
+{
+    // {{{ properties
+    var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => false);
+
+    var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"');
+
+    var $_lasterror = '';
+
+    var $fix_assoc_fields_names = false;
+
+    // }}}
+    // {{{ constructor
+
+    /**
+     * Constructor
+     */
+    function __construct()
+    {
+        parent::__construct();
+
+        $this->phptype = 'sqlite';
+        $this->dbsyntax = 'sqlite';
+
+        $this->supported['sequences'] = 'emulated';
+        $this->supported['indexes'] = true;
+        $this->supported['affected_rows'] = true;
+        $this->supported['summary_functions'] = true;
+        $this->supported['order_by_text'] = true;
+        $this->supported['current_id'] = 'emulated';
+        $this->supported['limit_queries'] = true;
+        $this->supported['LOBs'] = true;
+        $this->supported['replace'] = true;
+        $this->supported['transactions'] = true;
+        $this->supported['savepoints'] = false;
+        $this->supported['sub_selects'] = true;
+        $this->supported['auto_increment'] = true;
+        $this->supported['primary_key'] = false; // requires alter table implementation
+        $this->supported['result_introspection'] = false; // not implemented
+        $this->supported['prepared_statements'] = 'emulated';
+        $this->supported['identifier_quoting'] = true;
+        $this->supported['pattern_escaping'] = false;
+        $this->supported['new_link'] = false;
+
+        $this->options['base_transaction_name'] = '___php_MDB2_sqlite_auto_commit_off';
+        $this->options['fixed_float'] = 0;
+        $this->options['database_path'] = '';
+        $this->options['database_extension'] = '';
+        $this->options['server_version'] = '';
+    }
+
+    // }}}
+    // {{{ errorInfo()
+
+    /**
+     * This method is used to collect information about an error
+     *
+     * @param integer $error
+     * @return array
+     * @access public
+     */
+    function errorInfo($error = null)
+    {
+        $native_code = null;
+        if ($this->connection) {
+            $native_code = @sqlite_last_error($this->connection);
+        }
+        $native_msg = $this->_lasterror
+            ? html_entity_decode($this->_lasterror) : @sqlite_error_string($native_code);
+            
+        // PHP 5.2+ prepends the function name to $php_errormsg, so we need
+        // this hack to work around it, per bug #9599.
+        $native_msg = preg_replace('/^sqlite[a-z_]+\(\): /', '', $native_msg);
+
+        if (is_null($error)) {
+            static $error_regexps;
+            if (empty($error_regexps)) {
+                $error_regexps = array(
+                    '/^no such table:/' => MDB2_ERROR_NOSUCHTABLE,
+                    '/^no such index:/' => MDB2_ERROR_NOT_FOUND,
+                    '/^(table|index) .* already exists$/' => MDB2_ERROR_ALREADY_EXISTS,
+                    '/PRIMARY KEY must be unique/i' => MDB2_ERROR_CONSTRAINT,
+                    '/is not unique/' => MDB2_ERROR_CONSTRAINT,
+                    '/columns .* are not unique/i' => MDB2_ERROR_CONSTRAINT,
+                    '/uniqueness constraint failed/' => MDB2_ERROR_CONSTRAINT,
+                    '/may not be NULL/' => MDB2_ERROR_CONSTRAINT_NOT_NULL,
+                    '/^no such column:/' => MDB2_ERROR_NOSUCHFIELD,
+                    '/no column named/' => MDB2_ERROR_NOSUCHFIELD,
+                    '/column not present in both tables/i' => MDB2_ERROR_NOSUCHFIELD,
+                    '/^near ".*": syntax error$/' => MDB2_ERROR_SYNTAX,
+                    '/[0-9]+ values for [0-9]+ columns/i' => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+                 );
+            }
+            foreach ($error_regexps as $regexp => $code) {
+                if (preg_match($regexp, $native_msg)) {
+                    $error = $code;
+                    break;
+                }
+            }
+        }
+        return array($error, $native_code, $native_msg);
+    }
+
+    // }}}
+    // {{{ escape()
+
+    /**
+     * Quotes a string so it can be safely used in a query. It will quote
+     * the text so it can safely be used within a query.
+     *
+     * @param   string  the input string to quote
+     * @param   bool    escape wildcards
+     *
+     * @return  string  quoted string
+     *
+     * @access  public
+     */
+    function escape($text, $escape_wildcards = false)
+    {
+        $text = @sqlite_escape_string($text);
+        return $text;
+    }
+
+    // }}}
+    // {{{ beginTransaction()
+
+    /**
+     * Start a transaction or set a savepoint.
+     *
+     * @param   string  name of a savepoint to set
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function beginTransaction($savepoint = null)
+    {
+        $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!is_null($savepoint)) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'savepoints are not supported', __FUNCTION__);
+        } elseif ($this->in_transaction) {
+            return MDB2_OK;  //nothing to do
+        }
+        if (!$this->destructor_registered && $this->opened_persistent) {
+            $this->destructor_registered = true;
+            register_shutdown_function('MDB2_closeOpenTransactions');
+        }
+        $query = 'BEGIN TRANSACTION '.$this->options['base_transaction_name'];
+        $result =& $this->_doQuery($query, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = true;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ commit()
+
+    /**
+     * Commit the database changes done during a transaction that is in
+     * progress or release a savepoint. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after committing the pending changes.
+     *
+     * @param   string  name of a savepoint to release
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function commit($savepoint = null)
+    {
+        $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'savepoints are not supported', __FUNCTION__);
+        }
+
+        $query = 'COMMIT TRANSACTION '.$this->options['base_transaction_name'];
+        $result =& $this->_doQuery($query, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{
+
+    /**
+     * Cancel any database changes done during a transaction or since a specific
+     * savepoint that is in progress. This function may only be called when
+     * auto-committing is disabled, otherwise it will fail. Therefore, a new
+     * transaction is implicitly started after canceling the pending changes.
+     *
+     * @param   string  name of a savepoint to rollback to
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     */
+    function rollback($savepoint = null)
+    {
+        $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                'rollback cannot be done changes are auto committed', __FUNCTION__);
+        }
+        if (!is_null($savepoint)) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'savepoints are not supported', __FUNCTION__);
+        }
+
+        $query = 'ROLLBACK TRANSACTION '.$this->options['base_transaction_name'];
+        $result =& $this->_doQuery($query, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ function setTransactionIsolation()
+
+    /**
+     * Set the transacton isolation level.
+     *
+     * @param   string  standard isolation level
+     *                  READ UNCOMMITTED (allows dirty reads)
+     *                  READ COMMITTED (prevents dirty reads)
+     *                  REPEATABLE READ (prevents nonrepeatable reads)
+     *                  SERIALIZABLE (prevents phantom reads)
+     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
+     *
+     * @access  public
+     * @since   2.1.1
+     */
+    function setTransactionIsolation($isolation)
+    {
+        $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
+        switch ($isolation) {
+        case 'READ UNCOMMITTED':
+            $isolation = 0;
+            break;
+        case 'READ COMMITTED':
+        case 'REPEATABLE READ':
+        case 'SERIALIZABLE':
+            $isolation = 1;
+            break;
+        default:
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'isolation level is not supported: '.$isolation, __FUNCTION__);
+        }
+
+        $query = "PRAGMA read_uncommitted=$isolation";
+        return $this->_doQuery($query, true);
+    }
+
+    // }}}
+    // {{{ getDatabaseFile()
+
+    /**
+     * Builds the string with path+dbname+extension
+     *
+     * @return string full database path+file
+     * @access protected
+     */
+    function _getDatabaseFile($database_name)
+    {
+        if ($database_name === '' || $database_name === ':memory:') {
+            return $database_name;
+        }
+        return $this->options['database_path'].$database_name.$this->options['database_extension'];
+    }
+
+    // }}}
+    // {{{ connect()
+
+    /**
+     * Connect to the database
+     *
+     * @return true on success, MDB2 Error Object on failure
+     **/
+    function connect()
+    {
+        $database_file = $this->_getDatabaseFile($this->database_name);
+        if (is_resource($this->connection)) {
+            //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
+            if (MDB2::areEquals($this->connected_dsn, $this->dsn)
+                && $this->connected_database_name == $database_file
+                && $this->opened_persistent == $this->options['persistent']
+            ) {
+                return MDB2_OK;
+            }
+            $this->disconnect(false);
+        }
+
+        if (!PEAR::loadExtension($this->phptype)) {
+            return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
+        }
+
+        if (!empty($this->database_name)) {
+            if ($database_file !== ':memory:') {
+                if (!file_exists($database_file)) {
+                    if (!touch($database_file)) {
+                        return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                            'Could not create database file', __FUNCTION__);
+                    }
+                    if (!isset($this->dsn['mode'])
+                        || !is_numeric($this->dsn['mode'])
+                    ) {
+                        $mode = 0644;
+                    } else {
+                        $mode = octdec($this->dsn['mode']);
+                    }
+                    if (!chmod($database_file, $mode)) {
+                        return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                            'Could not be chmodded database file', __FUNCTION__);
+                    }
+                    if (!file_exists($database_file)) {
+                        return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                            'Could not be found database file', __FUNCTION__);
+                    }
+                }
+                if (!is_file($database_file)) {
+                    return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+                            'Database is a directory name', __FUNCTION__);
+                }
+                if (!is_readable($database_file)) {
+                    return $this->raiseError(MDB2_ERROR_ACCESS_VIOLATION, null, null,
+                            'Could not read database file', __FUNCTION__);
+                }
+            }
+
+            $connect_function = ($this->options['persistent'] ? 'sqlite_popen' : 'sqlite_open');
+            $php_errormsg = '';
+            if (version_compare('5.1.0', PHP_VERSION, '>')) {
+                @ini_set('track_errors', true);
+                $connection = @$connect_function($database_file);
+                @ini_restore('track_errors');
+            } else {
+                $connection = @$connect_function($database_file, 0666, $php_errormsg);
+            }
+            $this->_lasterror = $php_errormsg;
+            if (!$connection) {
+                return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
+                'unable to establish a connection', __FUNCTION__);
+            }
+
+            if (!empty($this->dsn['charset'])) {
+                $result = $this->setCharset($this->dsn['charset'], $connection);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+
+            $this->connection = $connection;
+            $this->connected_dsn = $this->dsn;
+            $this->connected_database_name = $database_file;
+            $this->opened_persistent = $this->getoption('persistent');
+            $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ disconnect()
+
+    /**
+     * Log out and disconnect from the database.
+     *
+     * @param  boolean $force if the disconnect should be forced even if the
+     *                        connection is opened persistently
+     * @return mixed true on success, false if not connected and error
+     *                object on error
+     * @access public
+     */
+    function disconnect($force = true)
+    {
+        if (is_resource($this->connection)) {
+            if ($this->in_transaction) {
+                $dsn = $this->dsn;
+                $database_name = $this->database_name;
+                $persistent = $this->options['persistent'];
+                $this->dsn = $this->connected_dsn;
+                $this->database_name = $this->connected_database_name;
+                $this->options['persistent'] = $this->opened_persistent;
+                $this->rollback();
+                $this->dsn = $dsn;
+                $this->database_name = $database_name;
+                $this->options['persistent'] = $persistent;
+            }
+
+            if (!$this->opened_persistent || $force) {
+                @sqlite_close($this->connection);
+            }
+        }
+        return parent::disconnect($force);
+    }
+
+    // }}}
+    // {{{ getConnection()
+
+    /**
+     * Returns a native connection
+     *
+     * @return  mixed   a valid MDB2 connection object,
+     *                  or a MDB2 error object on error
+     * @access  public
+     */
+    function getConnection()
+    {
+        $connection = parent::getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $fix_assoc_fields_names = $this->options['portability'] & MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES;
+        if ($fix_assoc_fields_names !== $this->fix_assoc_fields_names) {
+            @sqlite_query("PRAGMA short_column_names = $fix_assoc_fields_names;", $connection);
+            $this->fix_assoc_fields_names = $fix_assoc_fields_names;
+        }
+
+        return $connection;
+    }
+
+    // }}}
+    // {{{ _doQuery()
+
+    /**
+     * Execute a query
+     * @param string $query  query
+     * @param boolean $is_manip  if the query is a manipulation query
+     * @param resource $connection
+     * @param string $database_name
+     * @return result or error object
+     * @access protected
+     */
+    function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
+    {
+        $this->last_query = $query;
+        $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
+        if ($result) {
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            $query = $result;
+        }
+        if ($this->options['disable_query']) {
+            $result = $is_manip ? 0 : null;
+            return $result;
+        }
+
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+
+        $function = $this->options['result_buffering']
+            ? 'sqlite_query' : 'sqlite_unbuffered_query';
+        $php_errormsg = '';
+        if (version_compare('5.1.0', PHP_VERSION, '>')) {
+            @ini_set('track_errors', true);
+            do {
+                $result = @$function($query.';', $connection);
+            } while (sqlite_last_error($connection) == SQLITE_SCHEMA);
+            @ini_restore('track_errors');
+        } else {
+            do {
+                $result = @$function($query.';', $connection, SQLITE_BOTH, $php_errormsg);
+            } while (sqlite_last_error($connection) == SQLITE_SCHEMA);
+        }
+        $this->_lasterror = $php_errormsg;
+
+        if (!$result) {
+            $err =& $this->raiseError(null, null, null,
+                'Could not execute statement', __FUNCTION__);
+            return $err;
+        }
+
+        $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
+        return $result;
+    }
+
+    // }}}
+    // {{{ _affectedRows()
+
+    /**
+     * Returns the number of rows affected
+     *
+     * @param resource $result
+     * @param resource $connection
+     * @return mixed MDB2 Error Object or the number of rows affected
+     * @access private
+     */
+    function _affectedRows($connection, $result = null)
+    {
+        if (is_null($connection)) {
+            $connection = $this->getConnection();
+            if (PEAR::isError($connection)) {
+                return $connection;
+            }
+        }
+        return @sqlite_changes($connection);
+    }
+
+    // }}}
+    // {{{ _modifyQuery()
+
+    /**
+     * Changes a query string for various DBMS specific reasons
+     *
+     * @param string $query  query to modify
+     * @param boolean $is_manip  if it is a DML query
+     * @param integer $limit  limit the number of rows
+     * @param integer $offset  start reading from given offset
+     * @return string modified query
+     * @access protected
+     */
+    function _modifyQuery($query, $is_manip, $limit, $offset)
+    {
+        if ($this->options['portability'] & MDB2_PORTABILITY_DELETE_COUNT) {
+            if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
+                $query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
+                                      'DELETE FROM \1 WHERE 1=1', $query);
+            }
+        }
+        if ($limit > 0
+            && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
+        ) {
+            $query = rtrim($query);
+            if (substr($query, -1) == ';') {
+                $query = substr($query, 0, -1);
+            }
+            if ($is_manip) {
+                $query.= " LIMIT $limit";
+            } else {
+                $query.= " LIMIT $offset,$limit";
+            }
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ getServerVersion()
+
+    /**
+     * return version information about the server
+     *
+     * @param bool   $native  determines if the raw version string should be returned
+     * @return mixed array/string with version information or MDB2 error object
+     * @access public
+     */
+    function getServerVersion($native = false)
+    {
+        $server_info = false;
+        if ($this->connected_server_info) {
+            $server_info = $this->connected_server_info;
+        } elseif ($this->options['server_version']) {
+            $server_info = $this->options['server_version'];
+        } elseif (function_exists('sqlite_libversion')) {
+            $server_info = @sqlite_libversion();
+        }
+        if (!$server_info) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'Requires either the "server_version" option or the sqlite_libversion() function', __FUNCTION__);
+        }
+        // cache server_info
+        $this->connected_server_info = $server_info;
+        if (!$native) {
+            $tmp = explode('.', $server_info, 3);
+            $server_info = array(
+                'major' => isset($tmp[0]) ? $tmp[0] : null,
+                'minor' => isset($tmp[1]) ? $tmp[1] : null,
+                'patch' => isset($tmp[2]) ? $tmp[2] : null,
+                'extra' => null,
+                'native' => $server_info,
+            );
+        }
+        return $server_info;
+    }
+
+    // }}}
+    // {{{ replace()
+
+    /**
+     * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
+     * query, except that if there is already a row in the table with the same
+     * key field values, the REPLACE query just updates its values instead of
+     * inserting a new row.
+     *
+     * The REPLACE type of query does not make part of the SQL standards. Since
+     * practically only SQLite implements it natively, this type of query is
+     * emulated through this method for other DBMS using standard types of
+     * queries inside a transaction to assure the atomicity of the operation.
+     *
+     * @access public
+     *
+     * @param string $table name of the table on which the REPLACE query will
+     *  be executed.
+     * @param array $fields associative array that describes the fields and the
+     *  values that will be inserted or updated in the specified table. The
+     *  indexes of the array are the names of all the fields of the table. The
+     *  values of the array are also associative arrays that describe the
+     *  values and other properties of the table fields.
+     *
+     *  Here follows a list of field properties that need to be specified:
+     *
+     *    value:
+     *          Value to be assigned to the specified field. This value may be
+     *          of specified in database independent type format as this
+     *          function can perform the necessary datatype conversions.
+     *
+     *    Default:
+     *          this property is required unless the Null property
+     *          is set to 1.
+     *
+     *    type
+     *          Name of the type of the field. Currently, all types Metabase
+     *          are supported except for clob and blob.
+     *
+     *    Default: no type conversion
+     *
+     *    null
+     *          Boolean property that indicates that the value for this field
+     *          should be set to null.
+     *
+     *          The default value for fields missing in INSERT queries may be
+     *          specified the definition of a table. Often, the default value
+     *          is already null, but since the REPLACE may be emulated using
+     *          an UPDATE query, make sure that all fields of the table are
+     *          listed in this function argument array.
+     *
+     *    Default: 0
+     *
+     *    key
+     *          Boolean property that indicates that this field should be
+     *          handled as a primary key or at least as part of the compound
+     *          unique index of the table that will determine the row that will
+     *          updated if it exists or inserted a new row otherwise.
+     *
+     *          This function will fail if no key field is specified or if the
+     *          value of a key field is set to null because fields that are
+     *          part of unique index they may not be null.
+     *
+     *    Default: 0
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function replace($table, $fields)
+    {
+        $count = count($fields);
+        $query = $values = '';
+        $keys = $colnum = 0;
+        for (reset($fields); $colnum < $count; next($fields), $colnum++) {
+            $name = key($fields);
+            if ($colnum > 0) {
+                $query .= ',';
+                $values.= ',';
+            }
+            $query.= $name;
+            if (isset($fields[$name]['null']) && $fields[$name]['null']) {
+                $value = 'NULL';
+            } else {
+                $type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null;
+                $value = $this->quote($fields[$name]['value'], $type);
+                if (PEAR::isError($value)) {
+                    return $value;
+                }
+            }
+            $values.= $value;
+            if (isset($fields[$name]['key']) && $fields[$name]['key']) {
+                if ($value === 'NULL') {
+                    return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                        'key value '.$name.' may not be NULL', __FUNCTION__);
+                }
+                $keys++;
+            }
+        }
+        if ($keys == 0) {
+            return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                'not specified which fields are keys', __FUNCTION__);
+        }
+
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $query = "REPLACE INTO $table ($query) VALUES ($values)";
+        $result =& $this->_doQuery($query, true, $connection);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return $this->_affectedRows($connection, $result);
+    }
+
+    // }}}
+    // {{{ nextID()
+
+    /**
+     * Returns the next free id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @param boolean $ondemand when true the sequence is
+     *                          automatic created, if it
+     *                          not exists
+     *
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function nextID($seq_name, $ondemand = true)
+    {
+        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+        $seqcol_name = $this->options['seqcol_name'];
+        $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL)";
+        $this->expectError(MDB2_ERROR_NOSUCHTABLE);
+        $result =& $this->_doQuery($query, true);
+        $this->popExpect();
+        if (PEAR::isError($result)) {
+            if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
+                $this->loadModule('Manager', null, true);
+                $result = $this->manager->createSequence($seq_name);
+                if (PEAR::isError($result)) {
+                    return $this->raiseError($result, null, null,
+                        'on demand sequence '.$seq_name.' could not be created', __FUNCTION__);
+                } else {
+                    return $this->nextID($seq_name, false);
+                }
+            }
+            return $result;
+        }
+        $value = $this->lastInsertID();
+        if (is_numeric($value)) {
+            $query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value";
+            $result =& $this->_doQuery($query, true);
+            if (PEAR::isError($result)) {
+                $this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
+            }
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ lastInsertID()
+
+    /**
+     * Returns the autoincrement ID if supported or $id or fetches the current
+     * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
+     *
+     * @param string $table name of the table into which a new row was inserted
+     * @param string $field name of the field into which a new row was inserted
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function lastInsertID($table = null, $field = null)
+    {
+        $connection = $this->getConnection();
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+        $value = @sqlite_last_insert_rowid($connection);
+        if (!$value) {
+            return $this->raiseError(null, null, null,
+                'Could not get last insert ID', __FUNCTION__);
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ currID()
+
+    /**
+     * Returns the current id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function currID($seq_name)
+    {
+        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+        $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
+        $query = "SELECT MAX($seqcol_name) FROM $sequence_name";
+        return $this->queryOne($query, 'integer');
+    }
+}
+
+/**
+ * MDB2 SQLite result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Result_sqlite extends MDB2_Result_Common
+{
+    // }}}
+    // {{{ fetchRow()
+
+    /**
+     * Fetch a row and insert the data into an existing array.
+     *
+     * @param int       $fetchmode  how the array data should be indexed
+     * @param int    $rownum    number of the row where the data can be found
+     * @return int data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+    {
+        if (!is_null($rownum)) {
+            $seek = $this->seek($rownum);
+            if (PEAR::isError($seek)) {
+                return $seek;
+            }
+        }
+        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
+            $fetchmode = $this->db->fetchmode;
+        }
+        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+            $row = @sqlite_fetch_array($this->result, SQLITE_ASSOC);
+            if (is_array($row)
+                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+            ) {
+                $row = array_change_key_case($row, $this->db->options['field_case']);
+            }
+        } else {
+           $row = @sqlite_fetch_array($this->result, SQLITE_NUM);
+        }
+        if (!$row) {
+            if ($this->result === false) {
+                $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+                return $err;
+            }
+            $null = null;
+            return $null;
+        }
+        $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
+        $rtrim = false;
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
+            if (empty($this->types)) {
+                $mode += MDB2_PORTABILITY_RTRIM;
+            } else {
+                $rtrim = true;
+            }
+        }
+        if ($mode) {
+            $this->db->_fixResultArrayValues($row, $mode);
+        }
+        if (!empty($this->types)) {
+            $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
+        }
+        if (!empty($this->values)) {
+            $this->_assignBindColumns($row);
+        }
+        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
+            $object_class = $this->db->options['fetch_class'];
+            if ($object_class == 'stdClass') {
+                $row = (object) $row;
+            } else {
+                $row = &new $object_class($row);
+            }
+        }
+        ++$this->rownum;
+        return $row;
+    }
+
+    // }}}
+    // {{{ _getColumnNames()
+
+    /**
+     * Retrieve the names of columns returned by the DBMS in a query result.
+     *
+     * @return  mixed   Array variable that holds the names of columns as keys
+     *                  or an MDB2 error on failure.
+     *                  Some DBMS may not return any columns when the result set
+     *                  does not contain any rows.
+     * @access private
+     */
+    function _getColumnNames()
+    {
+        $columns = array();
+        $numcols = $this->numCols();
+        if (PEAR::isError($numcols)) {
+            return $numcols;
+        }
+        for ($column = 0; $column < $numcols; $column++) {
+            $column_name = @sqlite_field_name($this->result, $column);
+            $columns[$column_name] = $column;
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $columns = array_change_key_case($columns, $this->db->options['field_case']);
+        }
+        return $columns;
+    }
+
+    // }}}
+    // {{{ numCols()
+
+    /**
+     * Count the number of columns returned by the DBMS in a query result.
+     *
+     * @access public
+     * @return mixed integer value with the number of columns, a MDB2 error
+     *                       on failure
+     */
+    function numCols()
+    {
+        $cols = @sqlite_num_fields($this->result);
+        if (is_null($cols)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return count($this->types);
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get column count', __FUNCTION__);
+        }
+        return $cols;
+    }
+}
+
+/**
+ * MDB2 SQLite buffered result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_BufferedResult_sqlite extends MDB2_Result_sqlite
+{
+    // {{{ seek()
+
+    /**
+     * Seek to a specific row in a result set
+     *
+     * @param int    $rownum    number of the row where the data can be found
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function seek($rownum = 0)
+    {
+        if (!@sqlite_seek($this->result, $rownum)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return MDB2_OK;
+            }
+            return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
+                'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
+        }
+        $this->rownum = $rownum - 1;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ valid()
+
+    /**
+     * Check if the end of the result set has been reached
+     *
+     * @return mixed true or false on sucess, a MDB2 error on failure
+     * @access public
+     */
+    function valid()
+    {
+        $numrows = $this->numRows();
+        if (PEAR::isError($numrows)) {
+            return $numrows;
+        }
+        return $this->rownum < ($numrows - 1);
+    }
+
+    // }}}
+    // {{{ numRows()
+
+    /**
+     * Returns the number of rows in a result object
+     *
+     * @return mixed MDB2 Error Object or the number of rows
+     * @access public
+     */
+    function numRows()
+    {
+        $rows = @sqlite_num_rows($this->result);
+        if (is_null($rows)) {
+            if ($this->result === false) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'resultset has already been freed', __FUNCTION__);
+            } elseif (is_null($this->result)) {
+                return 0;
+            }
+            return $this->db->raiseError(null, null, null,
+                'Could not get row count', __FUNCTION__);
+        }
+        return $rows;
+    }
+}
+
+/**
+ * MDB2 SQLite statement driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Statement_sqlite extends MDB2_Statement_Common
+{
+
+}
+
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Extended.php b/program/lib/MDB2/Extended.php
new file mode 100644
index 0000000..7772c58
--- /dev/null
+++ b/program/lib/MDB2/Extended.php
@@ -0,0 +1,721 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: Extended.php,v 1.60 2007/11/28 19:49:34 quipo Exp $
+
+/**
+ * @package  MDB2
+ * @category Database
+ * @author   Lukas Smith <smith@pooteeweet.org>
+ */
+
+/**
+ * Used by autoPrepare()
+ */
+define('MDB2_AUTOQUERY_INSERT', 1);
+define('MDB2_AUTOQUERY_UPDATE', 2);
+define('MDB2_AUTOQUERY_DELETE', 3);
+define('MDB2_AUTOQUERY_SELECT', 4);
+
+/**
+ * MDB2_Extended: class which adds several high level methods to MDB2
+ *
+ * @package MDB2
+ * @category Database
+ * @author Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Extended extends MDB2_Module_Common
+{
+    // {{{ autoPrepare()
+
+    /**
+     * Generate an insert, update or delete query and call prepare() on it
+     *
+     * @param string table
+     * @param array the fields names
+     * @param int type of query to build
+     *                          MDB2_AUTOQUERY_INSERT
+     *                          MDB2_AUTOQUERY_UPDATE
+     *                          MDB2_AUTOQUERY_DELETE
+     *                          MDB2_AUTOQUERY_SELECT
+     * @param string (in case of update and delete queries, this string will be put after the sql WHERE statement)
+     * @param array that contains the types of the placeholders
+     * @param mixed array that contains the types of the columns in
+     *                        the result set or MDB2_PREPARE_RESULT, if set to
+     *                        MDB2_PREPARE_MANIP the query is handled as a manipulation query
+     *
+     * @return resource handle for the query
+     * @see buildManipSQL
+     * @access public
+     */
+    function autoPrepare($table, $table_fields, $mode = MDB2_AUTOQUERY_INSERT,
+        $where = false, $types = null, $result_types = MDB2_PREPARE_MANIP)
+    {
+        $query = $this->buildManipSQL($table, $table_fields, $mode, $where);
+        if (PEAR::isError($query)) {
+            return $query;
+        }
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        $lobs = array();
+        foreach ((array)$types as $param => $type) {
+            if (($type == 'clob') || ($type == 'blob')) {
+                $lobs[$param] = $table_fields[$param];
+            }
+        }
+        return $db->prepare($query, $types, $result_types, $lobs);
+    }
+
+    // }}}
+    // {{{ autoExecute()
+
+    /**
+     * Generate an insert, update or delete query and call prepare() and execute() on it
+     *
+     * @param string name of the table
+     * @param array assoc ($key=>$value) where $key is a field name and $value its value
+     * @param int type of query to build
+     *                          MDB2_AUTOQUERY_INSERT
+     *                          MDB2_AUTOQUERY_UPDATE
+     *                          MDB2_AUTOQUERY_DELETE
+     *                          MDB2_AUTOQUERY_SELECT
+     * @param string (in case of update and delete queries, this string will be put after the sql WHERE statement)
+     * @param array that contains the types of the placeholders
+     * @param string which specifies which result class to use
+     * @param mixed  array that contains the types of the columns in
+     *                        the result set or MDB2_PREPARE_RESULT, if set to
+     *                        MDB2_PREPARE_MANIP the query is handled as a manipulation query
+     *
+     * @return bool|MDB2_Error true on success, a MDB2 error on failure
+     * @see buildManipSQL
+     * @see autoPrepare
+     * @access public
+    */
+    function &autoExecute($table, $fields_values, $mode = MDB2_AUTOQUERY_INSERT,
+        $where = false, $types = null, $result_class = true, $result_types = MDB2_PREPARE_MANIP)
+    {
+        $fields_values = (array)$fields_values;
+        if ($mode == MDB2_AUTOQUERY_SELECT) {
+            if (is_array($result_types)) {
+                $keys = array_keys($result_types);
+            } elseif (!empty($fields_values)) {
+                $keys = $fields_values;
+            } else {
+                $keys = array();
+            }
+        } else {
+            $keys = array_keys($fields_values);
+        }
+        $params = array_values($fields_values);
+        if (empty($params)) {
+            $query = $this->buildManipSQL($table, $keys, $mode, $where);
+
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            if ($mode == MDB2_AUTOQUERY_SELECT) {
+                $result =& $db->query($query, $result_types, $result_class);
+            } else {
+                $result = $db->exec($query);
+            }
+        } else {
+            $stmt = $this->autoPrepare($table, $keys, $mode, $where, $types, $result_types);
+            if (PEAR::isError($stmt)) {
+                return $stmt;
+            }
+            $result =& $stmt->execute($params, $result_class);
+            $stmt->free();
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ buildManipSQL()
+
+    /**
+     * Make automaticaly an sql query for prepare()
+     *
+     * Example : buildManipSQL('table_sql', array('field1', 'field2', 'field3'), MDB2_AUTOQUERY_INSERT)
+     *           will return the string : INSERT INTO table_sql (field1,field2,field3) VALUES (?,?,?)
+     * NB : - This belongs more to a SQL Builder class, but this is a simple facility
+     *      - Be carefull ! If you don't give a $where param with an UPDATE/DELETE query, all
+     *        the records of the table will be updated/deleted !
+     *
+     * @param string name of the table
+     * @param ordered array containing the fields names
+     * @param int type of query to build
+     *                          MDB2_AUTOQUERY_INSERT
+     *                          MDB2_AUTOQUERY_UPDATE
+     *                          MDB2_AUTOQUERY_DELETE
+     *                          MDB2_AUTOQUERY_SELECT
+     * @param string (in case of update and delete queries, this string will be put after the sql WHERE statement)
+     *
+     * @return string sql query for prepare()
+     * @access public
+     */
+    function buildManipSQL($table, $table_fields, $mode, $where = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if ($db->options['quote_identifier']) {
+            $table = $db->quoteIdentifier($table);
+        }
+
+        if (!empty($table_fields) && $db->options['quote_identifier']) {
+            foreach ($table_fields as $key => $field) {
+                $table_fields[$key] = $db->quoteIdentifier($field);
+            }
+        }
+
+        if ($where !== false && !is_null($where)) {
+            if (is_array($where)) {
+                $where = implode(' AND ', $where);
+            }
+            $where = ' WHERE '.$where;
+        }
+
+        switch ($mode) {
+        case MDB2_AUTOQUERY_INSERT:
+            if (empty($table_fields)) {
+                return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'Insert requires table fields', __FUNCTION__);
+            }
+            $cols = implode(', ', $table_fields);
+            $values = '?'.str_repeat(', ?', (count($table_fields) - 1));
+            return 'INSERT INTO '.$table.' ('.$cols.') VALUES ('.$values.')';
+            break;
+        case MDB2_AUTOQUERY_UPDATE:
+            if (empty($table_fields)) {
+                return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'Update requires table fields', __FUNCTION__);
+            }
+            $set = implode(' = ?, ', $table_fields).' = ?';
+            $sql = 'UPDATE '.$table.' SET '.$set.$where;
+            return $sql;
+            break;
+        case MDB2_AUTOQUERY_DELETE:
+            $sql = 'DELETE FROM '.$table.$where;
+            return $sql;
+            break;
+        case MDB2_AUTOQUERY_SELECT:
+            $cols = !empty($table_fields) ? implode(', ', $table_fields) : '*';
+            $sql = 'SELECT '.$cols.' FROM '.$table.$where;
+            return $sql;
+            break;
+        }
+        return $db->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                'Non existant mode', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ limitQuery()
+
+    /**
+     * Generates a limited query
+     *
+     * @param string query
+     * @param array that contains the types of the columns in the result set
+     * @param integer the numbers of rows to fetch
+     * @param integer the row to start to fetching
+     * @param string which specifies which result class to use
+     * @param mixed   string which specifies which class to wrap results in
+     *
+     * @return MDB2_Result|MDB2_Error result set on success, a MDB2 error on failure
+     * @access public
+     */
+    function &limitQuery($query, $types, $limit, $offset = 0, $result_class = true,
+        $result_wrap_class = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->setLimit($limit, $offset);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $result =& $db->query($query, $types, $result_class, $result_wrap_class);
+        return $result;
+    }
+
+    // }}}
+    // {{{ execParam()
+
+    /**
+     * Execute a parameterized DML statement.
+     *
+     * @param string the SQL query
+     * @param array if supplied, prepare/execute will be used
+     *       with this array as execute parameters
+     * @param array that contains the types of the values defined in $params
+     *
+     * @return int|MDB2_Error affected rows on success, a MDB2 error on failure
+     * @access public
+     */
+    function execParam($query, $params = array(), $param_types = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        settype($params, 'array');
+        if (empty($params)) {
+            return $db->exec($query);
+        }
+
+        $stmt = $db->prepare($query, $param_types, MDB2_PREPARE_MANIP);
+        if (PEAR::isError($stmt)) {
+            return $stmt;
+        }
+
+        $result = $stmt->execute($params);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        $stmt->free();
+        return $result;
+    }
+
+    // }}}
+    // {{{ getOne()
+
+    /**
+     * Fetch the first column of the first row of data returned from a query.
+     * Takes care of doing the query and freeing the results when finished.
+     *
+     * @param string the SQL query
+     * @param string that contains the type of the column in the result set
+     * @param array if supplied, prepare/execute will be used
+     *       with this array as execute parameters
+     * @param array that contains the types of the values defined in $params
+     * @param int|string which column to return
+     *
+     * @return scalar|MDB2_Error data on success, a MDB2 error on failure
+     * @access public
+     */
+    function getOne($query, $type = null, $params = array(),
+        $param_types = null, $colnum = 0)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        settype($params, 'array');
+        settype($type, 'array');
+        if (empty($params)) {
+            return $db->queryOne($query, $type, $colnum);
+        }
+
+        $stmt = $db->prepare($query, $param_types, $type);
+        if (PEAR::isError($stmt)) {
+            return $stmt;
+        }
+
+        $result = $stmt->execute($params);
+        if (!MDB2::isResultCommon($result)) {
+            return $result;
+        }
+
+        $one = $result->fetchOne($colnum);
+        $stmt->free();
+        $result->free();
+        return $one;
+    }
+
+    // }}}
+    // {{{ getRow()
+
+    /**
+     * Fetch the first row of data returned from a query.  Takes care
+     * of doing the query and freeing the results when finished.
+     *
+     * @param string the SQL query
+     * @param array that contains the types of the columns in the result set
+     * @param array if supplied, prepare/execute will be used
+     *       with this array as execute parameters
+     * @param array that contains the types of the values defined in $params
+     * @param int the fetch mode to use
+     *
+     * @return array|MDB2_Error data on success, a MDB2 error on failure
+     * @access public
+     */
+    function getRow($query, $types = null, $params = array(),
+        $param_types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        settype($params, 'array');
+        if (empty($params)) {
+            return $db->queryRow($query, $types, $fetchmode);
+        }
+
+        $stmt = $db->prepare($query, $param_types, $types);
+        if (PEAR::isError($stmt)) {
+            return $stmt;
+        }
+
+        $result = $stmt->execute($params);
+        if (!MDB2::isResultCommon($result)) {
+            return $result;
+        }
+
+        $row = $result->fetchRow($fetchmode);
+        $stmt->free();
+        $result->free();
+        return $row;
+    }
+
+    // }}}
+    // {{{ getCol()
+
+    /**
+     * Fetch a single column from a result set and return it as an
+     * indexed array.
+     *
+     * @param string the SQL query
+     * @param string that contains the type of the column in the result set
+     * @param array if supplied, prepare/execute will be used
+     *       with this array as execute parameters
+     * @param array that contains the types of the values defined in $params
+     * @param int|string which column to return
+     *
+     * @return array|MDB2_Error data on success, a MDB2 error on failure
+     * @access public
+     */
+    function getCol($query, $type = null, $params = array(),
+        $param_types = null, $colnum = 0)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        settype($params, 'array');
+        settype($type, 'array');
+        if (empty($params)) {
+            return $db->queryCol($query, $type, $colnum);
+        }
+
+        $stmt = $db->prepare($query, $param_types, $type);
+        if (PEAR::isError($stmt)) {
+            return $stmt;
+        }
+
+        $result = $stmt->execute($params);
+        if (!MDB2::isResultCommon($result)) {
+            return $result;
+        }
+
+        $col = $result->fetchCol($colnum);
+        $stmt->free();
+        $result->free();
+        return $col;
+    }
+
+    // }}}
+    // {{{ getAll()
+
+    /**
+     * Fetch all the rows returned from a query.
+     *
+     * @param string the SQL query
+     * @param array that contains the types of the columns in the result set
+     * @param array if supplied, prepare/execute will be used
+     *       with this array as execute parameters
+     * @param array that contains the types of the values defined in $params
+     * @param int the fetch mode to use
+     * @param bool if set to true, the $all will have the first
+     *       column as its first dimension
+     * @param bool $force_array used only when the query returns exactly
+     *       two columns. If true, the values of the returned array will be
+     *       one-element arrays instead of scalars.
+     * @param bool $group if true, the values of the returned array is
+     *       wrapped in another array.  If the same key value (in the first
+     *       column) repeats itself, the values will be appended to this array
+     *       instead of overwriting the existing values.
+     *
+     * @return array|MDB2_Error data on success, a MDB2 error on failure
+     * @access public
+     */
+    function getAll($query, $types = null, $params = array(),
+        $param_types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT,
+        $rekey = false, $force_array = false, $group = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        settype($params, 'array');
+        if (empty($params)) {
+            return $db->queryAll($query, $types, $fetchmode, $rekey, $force_array, $group);
+        }
+
+        $stmt = $db->prepare($query, $param_types, $types);
+        if (PEAR::isError($stmt)) {
+            return $stmt;
+        }
+
+        $result = $stmt->execute($params);
+        if (!MDB2::isResultCommon($result)) {
+            return $result;
+        }
+
+        $all = $result->fetchAll($fetchmode, $rekey, $force_array, $group);
+        $stmt->free();
+        $result->free();
+        return $all;
+    }
+
+    // }}}
+    // {{{ getAssoc()
+
+    /**
+     * Fetch the entire result set of a query and return it as an
+     * associative array using the first column as the key.
+     *
+     * If the result set contains more than two columns, the value
+     * will be an array of the values from column 2-n.  If the result
+     * set contains only two columns, the returned value will be a
+     * scalar with the value of the second column (unless forced to an
+     * array with the $force_array parameter).  A MDB2 error code is
+     * returned on errors.  If the result set contains fewer than two
+     * columns, a MDB2_ERROR_TRUNCATED error is returned.
+     *
+     * For example, if the table 'mytable' contains:
+     * <pre>
+     *   ID      TEXT       DATE
+     * --------------------------------
+     *   1       'one'      944679408
+     *   2       'two'      944679408
+     *   3       'three'    944679408
+     * </pre>
+     * Then the call getAssoc('SELECT id,text FROM mytable') returns:
+     * <pre>
+     *    array(
+     *      '1' => 'one',
+     *      '2' => 'two',
+     *      '3' => 'three',
+     *    )
+     * </pre>
+     * ...while the call getAssoc('SELECT id,text,date FROM mytable') returns:
+     * <pre>
+     *    array(
+     *      '1' => array('one', '944679408'),
+     *      '2' => array('two', '944679408'),
+     *      '3' => array('three', '944679408')
+     *    )
+     * </pre>
+     *
+     * If the more than one row occurs with the same value in the
+     * first column, the last row overwrites all previous ones by
+     * default.  Use the $group parameter if you don't want to
+     * overwrite like this.  Example:
+     * <pre>
+     * getAssoc('SELECT category,id,name FROM mytable', null, null
+     *           MDB2_FETCHMODE_ASSOC, false, true) returns:
+     *    array(
+     *      '1' => array(array('id' => '4', 'name' => 'number four'),
+     *                   array('id' => '6', 'name' => 'number six')
+     *             ),
+     *      '9' => array(array('id' => '4', 'name' => 'number four'),
+     *                   array('id' => '6', 'name' => 'number six')
+     *             )
+     *    )
+     * </pre>
+     *
+     * Keep in mind that database functions in PHP usually return string
+     * values for results regardless of the database's internal type.
+     *
+     * @param string the SQL query
+     * @param array that contains the types of the columns in the result set
+     * @param array if supplied, prepare/execute will be used
+     *       with this array as execute parameters
+     * @param array that contains the types of the values defined in $params
+     * @param bool $force_array used only when the query returns
+     * exactly two columns.  If TRUE, the values of the returned array
+     * will be one-element arrays instead of scalars.
+     * @param bool $group if TRUE, the values of the returned array
+     *       is wrapped in another array.  If the same key value (in the first
+     *       column) repeats itself, the values will be appended to this array
+     *       instead of overwriting the existing values.
+     *
+     * @return array|MDB2_Error data on success, a MDB2 error on failure
+     * @access public
+     */
+    function getAssoc($query, $types = null, $params = array(), $param_types = null,
+        $fetchmode = MDB2_FETCHMODE_DEFAULT, $force_array = false, $group = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        settype($params, 'array');
+        if (empty($params)) {
+            return $db->queryAll($query, $types, $fetchmode, true, $force_array, $group);
+        }
+
+        $stmt = $db->prepare($query, $param_types, $types);
+        if (PEAR::isError($stmt)) {
+            return $stmt;
+        }
+
+        $result = $stmt->execute($params);
+        if (!MDB2::isResultCommon($result)) {
+            return $result;
+        }
+
+        $all = $result->fetchAll($fetchmode, true, $force_array, $group);
+        $stmt->free();
+        $result->free();
+        return $all;
+    }
+
+    // }}}
+    // {{{ executeMultiple()
+
+    /**
+     * This function does several execute() calls on the same statement handle.
+     * $params must be an array indexed numerically from 0, one execute call is
+     * done for every 'row' in the array.
+     *
+     * If an error occurs during execute(), executeMultiple() does not execute
+     * the unfinished rows, but rather returns that error.
+     *
+     * @param resource query handle from prepare()
+     * @param array numeric array containing the data to insert into the query
+     *
+     * @return bool|MDB2_Error true on success, a MDB2 error on failure
+     * @access public
+     * @see prepare(), execute()
+     */
+    function executeMultiple(&$stmt, $params = null)
+    {
+        for ($i = 0, $j = count($params); $i < $j; $i++) {
+            $result = $stmt->execute($params[$i]);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ getBeforeID()
+
+    /**
+     * Returns the next free id of a sequence if the RDBMS
+     * does not support auto increment
+     *
+     * @param string name of the table into which a new row was inserted
+     * @param string name of the field into which a new row was inserted
+     * @param bool when true the sequence is automatic created, if it not exists
+     * @param bool if the returned value should be quoted
+     *
+     * @return int|MDB2_Error id on success, a MDB2 error on failure
+     * @access public
+     */
+    function getBeforeID($table, $field = null, $ondemand = true, $quote = true)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if ($db->supports('auto_increment') !== true) {
+            $seq = $table.(empty($field) ? '' : '_'.$field);
+            $id = $db->nextID($seq, $ondemand);
+            if (!$quote || PEAR::isError($id)) {
+                return $id;
+            }
+            return $db->quote($id, 'integer');
+        } elseif (!$quote) {
+            return null;
+        }
+        return 'NULL';
+    }
+
+    // }}}
+    // {{{ getAfterID()
+
+    /**
+     * Returns the autoincrement ID if supported or $id
+     *
+     * @param mixed value as returned by getBeforeId()
+     * @param string name of the table into which a new row was inserted
+     * @param string name of the field into which a new row was inserted
+     *
+     * @return int|MDB2_Error id on success, a MDB2 error on failure
+     * @access public
+     */
+    function getAfterID($id, $table, $field = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if ($db->supports('auto_increment') !== true) {
+            return $id;
+        }
+        return $db->lastInsertID($table, $field);
+    }
+
+    // }}}
+}
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/Iterator.php b/program/lib/MDB2/Iterator.php
new file mode 100644
index 0000000..ca5e7b6
--- /dev/null
+++ b/program/lib/MDB2/Iterator.php
@@ -0,0 +1,259 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP version 5                                                        |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: Iterator.php,v 1.22 2006/05/06 14:03:41 lsmith Exp $
+
+/**
+ * PHP5 Iterator
+ *
+ * @package  MDB2
+ * @category Database
+ * @author   Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Iterator implements Iterator
+{
+    protected $fetchmode;
+    protected $result;
+    protected $row;
+
+    // {{{ constructor
+
+    /**
+     * Constructor
+     */
+    public function __construct($result, $fetchmode = MDB2_FETCHMODE_DEFAULT)
+    {
+        $this->result = $result;
+        $this->fetchmode = $fetchmode;
+    }
+    // }}}
+
+    // {{{ seek()
+
+    /**
+     * Seek forward to a specific row in a result set
+     *
+     * @param int number of the row where the data can be found
+     *
+     * @return void
+     * @access public
+     */
+    public function seek($rownum)
+    {
+        $this->row = null;
+        if ($this->result) {
+            $this->result->seek($rownum);
+        }
+    }
+    // }}}
+
+    // {{{ next()
+
+    /**
+     * Fetch next row of data
+     *
+     * @return void
+     * @access public
+     */
+    public function next()
+    {
+        $this->row = null;
+    }
+    // }}}
+
+    // {{{ current()
+
+    /**
+     * return a row of data
+     *
+     * @return void
+     * @access public
+     */
+    public function current()
+    {
+        if (is_null($this->row)) {
+            $row = $this->result->fetchRow($this->fetchmode);
+            if (PEAR::isError($row)) {
+                $row = false;
+            }
+            $this->row = $row;
+        }
+        return $this->row;
+    }
+    // }}}
+
+    // {{{ valid()
+
+    /**
+     * Check if the end of the result set has been reached
+     *
+     * @return bool true/false, false is also returned on failure
+     * @access public
+     */
+    public function valid()
+    {
+        return (bool)$this->current();
+    }
+    // }}}
+
+    // {{{ free()
+
+    /**
+     * Free the internal resources associated with result.
+     *
+     * @return bool|MDB2_Error true on success, false|MDB2_Error if result is invalid
+     * @access public
+     */
+    public function free()
+    {
+        if ($this->result) {
+            return $this->result->free();
+        }
+        $this->result = false;
+        $this->row = null;
+        return false;
+    }
+    // }}}
+
+    // {{{ key()
+
+    /**
+     * Returns the row number
+     *
+     * @return int|bool|MDB2_Error true on success, false|MDB2_Error if result is invalid
+     * @access public
+     */
+    public function key()
+    {
+        if ($this->result) {
+            return $this->result->rowCount();
+        }
+        return false;
+    }
+    // }}}
+
+    // {{{ rewind()
+
+    /**
+     * Seek to the first row in a result set
+     *
+     * @return void
+     * @access public
+     */
+    public function rewind()
+    {
+    }
+    // }}}
+
+    // {{{ destructor
+
+    /**
+     * Destructor
+     */
+    public function __destruct()
+    {
+        $this->free();
+    }
+    // }}}
+}
+
+/**
+ * PHP5 buffered Iterator
+ *
+ * @package  MDB2
+ * @category Database
+ * @author   Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_BufferedIterator extends MDB2_Iterator implements SeekableIterator
+{
+    // {{{ valid()
+
+    /**
+     * Check if the end of the result set has been reached
+     *
+     * @return bool|MDB2_Error true on success, false|MDB2_Error if result is invalid
+     * @access public
+     */
+    public function valid()
+    {
+        if ($this->result) {
+            return $this->result->valid();
+        }
+        return false;
+    }
+    // }}}
+
+    // {{{count()
+
+    /**
+     * Returns the number of rows in a result object
+     *
+     * @return int|MDB2_Error number of rows, false|MDB2_Error if result is invalid
+     * @access public
+     */
+    public function count()
+    {
+        if ($this->result) {
+            return $this->result->numRows();
+        }
+        return false;
+    }
+    // }}}
+
+    // {{{ rewind()
+
+    /**
+     * Seek to the first row in a result set
+     *
+     * @return void
+     * @access public
+     */
+    public function rewind()
+    {
+        $this->seek(0);
+    }
+    // }}}
+}
+
+?>
\ No newline at end of file
diff --git a/program/lib/MDB2/LOB.php b/program/lib/MDB2/LOB.php
new file mode 100644
index 0000000..69db267
--- /dev/null
+++ b/program/lib/MDB2/LOB.php
@@ -0,0 +1,264 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP version 5                                                        |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: LOB.php,v 1.34 2006/10/25 11:52:21 lsmith Exp $
+
+/**
+ * @package  MDB2
+ * @category Database
+ * @author   Lukas Smith <smith@pooteeweet.org>
+ */
+
+require_once 'MDB2.php';
+
+/**
+ * MDB2_LOB: user land stream wrapper implementation for LOB support
+ *
+ * @package MDB2
+ * @category Database
+ * @author Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_LOB
+{
+    /**
+     * contains the key to the global MDB2 instance array of the associated
+     * MDB2 instance
+     *
+     * @var integer
+     * @access protected
+     */
+    var $db_index;
+
+    /**
+     * contains the key to the global MDB2_LOB instance array of the associated
+     * MDB2_LOB instance
+     *
+     * @var integer
+     * @access protected
+     */
+    var $lob_index;
+
+    // {{{ stream_open()
+
+    /**
+     * open stream
+     *
+     * @param string specifies the URL that was passed to fopen()
+     * @param string the mode used to open the file
+     * @param int holds additional flags set by the streams API
+     * @param string not used
+     *
+     * @return bool
+     * @access public
+     */
+    function stream_open($path, $mode, $options, &$opened_path)
+    {
+        if (!preg_match('/^rb?\+?$/', $mode)) {
+            return false;
+        }
+        $url = parse_url($path);
+        if (empty($url['host'])) {
+            return false;
+        }
+        $this->db_index = (int)$url['host'];
+        if (!isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+            return false;
+        }
+        $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+        $this->lob_index = (int)$url['user'];
+        if (!isset($db->datatype->lobs[$this->lob_index])) {
+            return false;
+        }
+        return true;
+    }
+    // }}}
+
+    // {{{ stream_read()
+
+    /**
+     * read stream
+     *
+     * @param int number of bytes to read
+     *
+     * @return string
+     * @access public
+     */
+    function stream_read($count)
+    {
+        if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+            $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+            $db->datatype->_retrieveLOB($db->datatype->lobs[$this->lob_index]);
+
+            $data = $db->datatype->_readLOB($db->datatype->lobs[$this->lob_index], $count);
+            $length = strlen($data);
+            if ($length == 0) {
+                $db->datatype->lobs[$this->lob_index]['endOfLOB'] = true;
+            }
+            $db->datatype->lobs[$this->lob_index]['position'] += $length;
+            return $data;
+        }
+    }
+    // }}}
+
+    // {{{ stream_write()
+
+    /**
+     * write stream, note implemented
+     *
+     * @param string data
+     *
+     * @return int
+     * @access public
+     */
+    function stream_write($data)
+    {
+        return 0;
+    }
+    // }}}
+
+    // {{{ stream_tell()
+
+    /**
+     * return the current position
+     *
+     * @return int current position
+     * @access public
+     */
+    function stream_tell()
+    {
+        if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+            $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+            return $db->datatype->lobs[$this->lob_index]['position'];
+        }
+    }
+    // }}}
+
+    // {{{ stream_eof()
+
+    /**
+     * Check if stream reaches EOF
+     *
+     * @return bool
+     * @access public
+     */
+    function stream_eof()
+    {
+        if (!isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+            return true;
+        }
+
+        $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+        $result = $db->datatype->_endOfLOB($db->datatype->lobs[$this->lob_index]);
+        if (version_compare(phpversion(), "5.0", ">=")
+            && version_compare(phpversion(), "5.1", "<")
+        ) {
+            return !$result;
+        }
+        return $result;
+    }
+    // }}}
+
+    // {{{ stream_seek()
+
+    /**
+     * Seek stream, not implemented
+     *
+     * @param int offset
+     * @param int whence
+     *
+     * @return bool
+     * @access public
+     */
+    function stream_seek($offset, $whence)
+    {
+        return false;
+    }
+    // }}}
+
+    // {{{ stream_stat()
+
+    /**
+     * return information about stream
+     *
+     * @access public
+     */
+    function stream_stat()
+    {
+        if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+            $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+            return array(
+              'db_index' => $this->db_index,
+              'lob_index' => $this->lob_index,
+            );
+        }
+    }
+    // }}}
+
+    // {{{ stream_close()
+
+    /**
+     * close stream
+     *
+     * @access public
+     */
+    function stream_close()
+    {
+        if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
+            $db =& $GLOBALS['_MDB2_databases'][$this->db_index];
+            if (isset($db->datatype->lobs[$this->lob_index])) {
+                $db->datatype->_destroyLOB($db->datatype->lobs[$this->lob_index]);
+                unset($db->datatype->lobs[$this->lob_index]);
+            }
+        }
+    }
+    // }}}
+}
+
+// register streams wrapper
+if (!stream_wrapper_register("MDB2LOB", "MDB2_LOB")) {
+    MDB2::raiseError();
+    return false;
+}
+
+?>

--
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