From 7ae5432fbfc0e923f2fe8dc62ff77afb8ecc80cf Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Wed, 30 May 2012 04:42:27 -0400
Subject: [PATCH] Abbreviate long attachment file names with ellipsis (#1488499)

---
 program/lib/MDB2/Driver/Datatype/Common.php |  981 +++++++++++++++++++++++++++++++++++++++++++++-----------
 1 files changed, 778 insertions(+), 203 deletions(-)

diff --git a/program/lib/MDB2/Driver/Datatype/Common.php b/program/lib/MDB2/Driver/Datatype/Common.php
old mode 100755
new mode 100644
index 808fd18..2083d75
--- a/program/lib/MDB2/Driver/Datatype/Common.php
+++ b/program/lib/MDB2/Driver/Datatype/Common.php
@@ -2,7 +2,7 @@
 // +----------------------------------------------------------------------+
 // | PHP versions 4 and 5                                                 |
 // +----------------------------------------------------------------------+
-// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
 // | Stig. S. Bakken, Lukas Smith                                         |
 // | All rights reserved.                                                 |
 // +----------------------------------------------------------------------+
@@ -42,7 +42,7 @@
 // | Author: Lukas Smith <smith@pooteeweet.org>                           |
 // +----------------------------------------------------------------------+
 //
-// $Id$
+// $Id: Common.php 292715 2009-12-28 14:06:34Z quipo $
 
 require_once 'MDB2/LOB.php';
 
@@ -55,34 +55,71 @@
 /**
  * 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_types = array(
-        'text'      => true,
+    var $valid_default_values = array(
+        'text'      => '',
         'boolean'   => true,
-        'integer'   => true,
-        'decimal'   => true,
-        'float'     => true,
-        'date'      => true,
-        'time'      => true,
-        'timestamp' => true,
-        'clob'      => true,
-        'blob'      => 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 array
+     * @access protected
+     */
     var $lobs = array();
 
     // }}}
-    // {{{ setResultTypes()
+    // {{{ 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
@@ -94,8 +131,7 @@
      * function is not called, the type of all result set columns is assumed
      * to be text, thus leading to not perform any conversions.
      *
-     * @param resource $result result identifier
-     * @param string $types array variable that lists the
+     * @param array $types array variable that lists the
      *       data types to be expected in the result set columns. If this array
      *       contains less types than the number of columns that are returned
      *       in the result set, the remaining columns are assumed to be of the
@@ -104,44 +140,48 @@
      * @return mixed MDB2_OK on success, a MDB2 error on failure
      * @access public
      */
-    function setResultTypes(&$result, $types)
+    function checkResultTypes($types)
     {
-        $types = is_array($types) ? array_values($types) : array($types);
+        $types = is_array($types) ? $types : array($types);
         foreach ($types as $key => $type) {
-            if (!isset($this->valid_types[$type])) {
+            if (!isset($this->valid_default_values[$type])) {
                 $db =& $this->getDBInstance();
                 if (PEAR::isError($db)) {
                     return $db;
                 }
-
-                return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
-                    'setResultTypes: ' . $type . ' for '. $key .' is not a supported column type');
+                if (empty($db->options['datatype_map'][$type])) {
+                    return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                        $type.' for '.$key.' is not a supported column type', __FUNCTION__);
+                }
             }
         }
-        $result->types = $types;
-        return MDB2_OK;
+        return $types;
     }
 
     // }}}
     // {{{ _baseConvertResult()
 
     /**
-     * general type conversion method
+     * General type conversion method
      *
-     * @param mixed $value refernce to a value to be converted
-     * @param int $type constant that specifies which type to convert to
-     * @return object a MDB2 error on failure
+     * @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, $type)
+    function _baseConvertResult($value, $type, $rtrim = true)
     {
         switch ($type) {
         case 'text':
+            if ($rtrim) {
+                $value = rtrim($value);
+            }
             return $value;
         case 'integer':
             return intval($value);
         case 'boolean':
-            return $value == 'Y';
+            return !empty($value);
         case 'decimal':
             return $value;
         case 'float':
@@ -159,8 +199,9 @@
                 'position' => 0,
                 'lob_index' => null,
                 'endOfLOB' => false,
-                'ressource' => $value,
+                'resource' => $value,
                 'value' => null,
+                'loaded' => false,
             );
             end($this->lobs);
             $lob_index = key($this->lobs);
@@ -174,56 +215,111 @@
         }
 
         return $db->raiseError(MDB2_ERROR_INVALID, null, null,
-            'attempt to convert result value to an unknown type ' . $type);
+            'attempt to convert result value to an unknown type :' . $type, __FUNCTION__);
     }
 
     // }}}
     // {{{ convertResult()
 
     /**
-     * convert a value to a RDBMS indepdenant MDB2 type
+     * Convert a value to a RDBMS indipendent MDB2 type
      *
-     * @param mixed $value value to be converted
-     * @param int $type constant that specifies which type to convert to
-     * @return mixed converted value or a MDB2 error on failure
+     * @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, $type)
+    function convertResult($value, $type, $rtrim = true)
     {
-        if (is_null($value)) {
+        if (null === $value) {
             return null;
         }
-        return $this->_baseConvertResult($value, $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, '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 resource $result result identifier
-     * @param array $row array with data
+     * @param array $types
+     * @param array $row specifies the types to convert to
+     * @param bool   $rtrim   if to rtrim text values or not
      * @return mixed MDB2_OK on success,  a MDB2 error on failure
      * @access public
      */
-    function convertResultRow($types, $row)
+    function _sortResultFieldTypes($columns, $types)
     {
-        if (is_array($types)) {
-            $current_column = -1;
-            foreach ($row as $key => $column) {
-                ++$current_column;
-                if (!isset($column) || !isset($types[$current_column])) {
-                    continue;
-                }
-                $value = $this->convertResult($row[$key], $types[$current_column]);
-                if (PEAR::isError($value)) {
-                    return $value;
-                }
-                $row[$key] = $value;
+        $n_cols = count($columns);
+        $n_types = count($types);
+        if ($n_cols > $n_types) {
+            for ($i= $n_cols - $n_types; $i >= 0; $i--) {
+                $types[] = null;
             }
         }
-        return $row;
+        $sorted_types = array();
+        foreach ($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 (null === $sorted_types[$k]) {
+                    $sorted_types[$k] = current($types);
+                    next($types);
+                }
+            }
+        }
+        return $sorted_types;
     }
 
     // }}}
@@ -242,15 +338,220 @@
      */
     function getDeclaration($type, $name, $field)
     {
-        if (!method_exists($this, "_get{$type}Declaration")) {
-            $db =& $this->getDBInstance();
-            if (PEAR::isError($db)) {
-                return $db;
-            }
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
 
-            return $db->raiseError('type not defined: '.$type);
+        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']);
+
+        $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
+        $default = '';
+        if (array_key_exists('default', $field)) {
+            if ($field['default'] === '') {
+                $db =& $this->getDBInstance();
+                if (PEAR::isError($db)) {
+                    return $db;
+                }
+                $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'] = ' ';
+                }
+            }
+            if (null !== $field['default']) {
+                $default = ' DEFAULT ' . $this->quote($field['default'], $field['type']);
+            }
+        }
+
+        $collation = empty($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 '';
     }
 
     // }}}
@@ -281,7 +582,7 @@
      */
     function _getIntegerDeclaration($name, $field)
     {
-        if (array_key_exists('unsigned', $field) && $field['unsigned']) {
+        if (!empty($field['unsigned'])) {
             $db =& $this->getDBInstance();
             if (PEAR::isError($db)) {
                 return $db;
@@ -289,10 +590,7 @@
 
             $db->warnings[] = "unsigned integer field \"$name\" is being declared as signed integer";
         }
-        $default = array_key_exists('default', $field) ? ' DEFAULT '.
-            $this->quote($field['default'], 'integer') : '';
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        return $name.' INT'.$default.$notnull;
+        return $this->_getDeclaration($name, $field);
     }
 
     // }}}
@@ -324,11 +622,7 @@
      */
     function _getTextDeclaration($name, $field)
     {
-        $default = array_key_exists('default', $field) ? ' DEFAULT '.
-            $this->quote($field['default'], 'text') : '';
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        $type = array_key_exists('length', $field) ? 'CHAR ('.$field['length'].')' : 'TEXT';
-        return $name.' '.$type.$default.$notnull;
+        return $this->_getDeclaration($name, $field);
     }
 
     // }}}
@@ -340,26 +634,31 @@
      *
      * @param string $name name the field to be declared.
      * @param array $field associative array with the name of the properties
-     *       of the field being declared as array indexes. Currently, the types
-     *       of supported field properties are as follows:
+     *        of the field being declared as array indexes. Currently, the types
+     *        of supported field properties are as follows:
      *
-     *       length
-     *           Integer value that determines the maximum length of the large
-     *           object field. If this argument is missing the field should be
-     *           declared to have the longest length allowed by the DBMS.
+     *        length
+     *            Integer value that determines the maximum length of the large
+     *            object field. If this argument is missing the field should be
+     *            declared to have the longest length allowed by the DBMS.
      *
-     *       notnull
-     *           Boolean flag that indicates whether this field is constrained
-     *           to not be set to null.
+     *        notnull
+     *            Boolean flag that indicates whether this field is constrained
+     *            to not be set to null.
      * @return string DBMS specific SQL code portion that should be used to
-     *       declare the specified field.
-     * @access protected
+     *        declare the specified field.
+     * @access public
      */
     function _getCLOBDeclaration($name, $field)
     {
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        $type = array_key_exists('length', $field) ? 'CHAR ('.$field['length'].')' : 'TEXT';
-        return $name.' '.$type.$notnull;
+        $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;
     }
 
     // }}}
@@ -371,26 +670,31 @@
      *
      * @param string $name name the field to be declared.
      * @param array $field associative array with the name of the properties
-     *       of the field being declared as array indexes. Currently, the types
-     *       of supported field properties are as follows:
+     *        of the field being declared as array indexes. Currently, the types
+     *        of supported field properties are as follows:
      *
-     *       length
-     *           Integer value that determines the maximum length of the large
-     *           object field. If this argument is missing the field should be
-     *           declared to have the longest length allowed by the DBMS.
+     *        length
+     *            Integer value that determines the maximum length of the large
+     *            object field. If this argument is missing the field should be
+     *            declared to have the longest length allowed by the DBMS.
      *
-     *       notnull
-     *           Boolean flag that indicates whether this field is constrained
-     *           to not be set to null.
+     *        notnull
+     *            Boolean flag that indicates whether this field is constrained
+     *            to not be set to null.
      * @return string DBMS specific SQL code portion that should be used to
-     *       declare the specified field.
+     *        declare the specified field.
      * @access protected
      */
     function _getBLOBDeclaration($name, $field)
     {
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        $type = array_key_exists('length', $field) ? 'CHAR ('.$field['length'].')' : 'TEXT';
-        return $name.' '.$type.$notnull;
+        $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;
     }
 
     // }}}
@@ -417,10 +721,7 @@
      */
     function _getBooleanDeclaration($name, $field)
     {
-        $default = array_key_exists('default', $field) ? ' DEFAULT '.
-            $this->quote($field['default'], 'boolean') : '';
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        return $name.' CHAR (1)'.$default.$notnull;
+        return $this->_getDeclaration($name, $field);
     }
 
     // }}}
@@ -447,10 +748,7 @@
      */
     function _getDateDeclaration($name, $field)
     {
-        $default = array_key_exists('default', $field) ? ' DEFAULT '.
-            $this->quote($field['default'], 'date') : '';
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        return $name.' CHAR ('.strlen('YYYY-MM-DD').')'.$default.$notnull;
+        return $this->_getDeclaration($name, $field);
     }
 
     // }}}
@@ -477,10 +775,7 @@
      */
     function _getTimestampDeclaration($name, $field)
     {
-        $default = array_key_exists('default', $field) ? ' DEFAULT '.
-            $this->quote($field['default'], 'timestamp') : '';
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        return $name.' CHAR ('.strlen('YYYY-MM-DD HH:MM:SS').')'.$default.$notnull;
+        return $this->_getDeclaration($name, $field);
     }
 
     // }}}
@@ -507,10 +802,7 @@
      */
     function _getTimeDeclaration($name, $field)
     {
-        $default = array_key_exists('default', $field) ? ' DEFAULT '.
-            $this->quote($field['default'], 'time') : '';
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        return $name.' CHAR ('.strlen('HH:MM:SS').')'.$default.$notnull;
+        return $this->_getDeclaration($name, $field);
     }
 
     // }}}
@@ -537,10 +829,7 @@
      */
     function _getFloatDeclaration($name, $field)
     {
-        $default = array_key_exists('default', $field) ? ' DEFAULT '.
-            $this->quote($field['default'], 'float') : '';
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        return $name.' TEXT'.$default.$notnull;
+        return $this->_getDeclaration($name, $field);
     }
 
     // }}}
@@ -567,10 +856,7 @@
      */
     function _getDecimalDeclaration($name, $field)
     {
-        $default = array_key_exists('default', $field) ? ' DEFAULT '.
-            $this->quote($field['default'], 'decimal') : '';
-        $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
-        return $name.' TEXT'.$default.$notnull;
+        return $this->_getDeclaration($name, $field);
     }
 
     // }}}
@@ -581,31 +867,39 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access public
      */
     function compareDefinition($current, $previous)
     {
-        $type = array_key_exists('type', $current) ? $current['type'] : null;
+        $type = !empty($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');
+                'type "'.$current['type'].'" is not yet supported', __FUNCTION__);
         }
 
-        if (!array_key_exists('type', $previous) || $previous['type'] != $type) {
+        if (empty($previous['type']) || $previous['type'] != $type) {
             return $current;
         }
 
         $change = $this->{"_compare{$type}Definition"}($current, $previous);
 
-        $previous_notnull = array_key_exists('notnull', $previous) ? $previous['notnull'] : false;
-        $notnull = array_key_exists('notnull', $current) ? $current['notnull'] : false;
+        if ($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;
         }
@@ -629,19 +923,19 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareIntegerDefinition($current, $previous)
     {
         $change = array();
-        $previous_unsigned = array_key_exists('unsigned', $previous) ? $previous['unsigned'] : false;
-        $unsigned = array_key_exists('unsigned', $current) ? $current['unsigned'] : false;
+        $previous_unsigned = !empty($previous['unsigned']) ? $previous['unsigned'] : false;
+        $unsigned = !empty($current['unsigned']) ? $current['unsigned'] : false;
         if ($previous_unsigned != $unsigned) {
             $change['unsigned'] = true;
         }
-        $previous_autoincrement = array_key_exists('autoincrement', $previous) ? $previous['autoincrement'] : false;
-        $autoincrement = array_key_exists('autoincrement', $current) ? $current['autoincrement'] : false;
+        $previous_autoincrement = !empty($previous['autoincrement']) ? $previous['autoincrement'] : false;
+        $autoincrement = !empty($current['autoincrement']) ? $current['autoincrement'] : false;
         if ($previous_autoincrement != $autoincrement) {
             $change['autoincrement'] = true;
         }
@@ -656,16 +950,21 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareTextDefinition($current, $previous)
     {
         $change = array();
-        $previous_length = array_key_exists('length', $previous) ? $previous['length'] : 0;
-        $length = array_key_exists('length', $current) ? $current['length'] : 0;
+        $previous_length = !empty($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;
     }
@@ -678,7 +977,7 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareCLOBDefinition($current, $previous)
@@ -694,7 +993,7 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareBLOBDefinition($current, $previous)
@@ -710,7 +1009,7 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareDateDefinition($current, $previous)
@@ -726,7 +1025,7 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareTimeDefinition($current, $previous)
@@ -742,7 +1041,7 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareTimestampDefinition($current, $previous)
@@ -758,7 +1057,7 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareBooleanDefinition($current, $previous)
@@ -774,7 +1073,7 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareFloatDefinition($current, $previous)
@@ -790,7 +1089,7 @@
      *
      * @param array $current new definition
      * @param array  $previous old definition
-     * @return array  containg all changes that will need to be applied
+     * @return array  containing all changes that will need to be applied
      * @access protected
      */
     function _compareDecimalDefinition($current, $previous)
@@ -807,18 +1106,20 @@
      *
      * @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, $quote = true)
+    function quote($value, $type = null, $quote = true, $escape_wildcards = false)
     {
         $db =& $this->getDBInstance();
         if (PEAR::isError($db)) {
             return $db;
         }
 
-        if (is_null($value)
+        if ((null === $value)
             || ($value === '' && $db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL)
         ) {
             if (!$quote) {
@@ -827,20 +1128,21 @@
             return 'NULL';
         }
 
-        if (is_null($type)) {
+        if (null === $type) {
             switch (gettype($value)) {
             case 'integer':
                 $type = 'integer';
                 break;
             case 'double':
-                // todo
+                // todo: default to decimal as float is quite unusual
+                // $type = 'float';
                 $type = 'decimal';
-                $type = 'float';
                 break;
             case 'boolean':
                 $type = 'boolean';
                 break;
             case 'array':
+                 $value = serialize($value);
             case 'object':
                  $type = 'text';
                 break;
@@ -856,18 +1158,24 @@
                 }
                 break;
             }
+        } elseif (!empty($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 $db->raiseError('type not defined: '.$type);
+            return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'type not defined: '.$type, __FUNCTION__);
         }
-        $value = $this->{"_quote{$type}"}($value);
-
-        // ugly hack to remove single quotes
-        if (!$quote && isset($value[0]) && $value[0] === "'") {
-            $value = substr($value, 1, -1);
+        $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;
     }
 
@@ -879,11 +1187,13 @@
      * 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)
+    function _quoteInteger($value, $quote, $escape_wildcards)
     {
         return (int)$value;
     }
@@ -896,18 +1206,28 @@
      * 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)
+    function _quoteText($value, $quote, $escape_wildcards)
     {
+        if (!$quote) {
+            return $value;
+        }
+
         $db =& $this->getDBInstance();
         if (PEAR::isError($db)) {
             return $db;
         }
 
-        return "'".$db->escape($value)."'";
+        $value = $db->escape($value, $escape_wildcards);
+        if (PEAR::isError($value)) {
+            return $value;
+        }
+        return "'".$value."'";
     }
 
     // }}}
@@ -917,7 +1237,7 @@
      * Convert a text value into a DBMS specific format that is suitable to
      * compose query statements.
      *
-     * @param  $value
+     * @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
@@ -959,15 +1279,26 @@
      * Convert a text value into a DBMS specific format that is suitable to
      * compose query statements.
      *
-     * @param  $value
+     * @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)
+    function _quoteLOB($value, $quote, $escape_wildcards)
     {
-        $value = $this->_readFile($value);
-        return $this->_quoteText($value);
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        if ($db->options['lob_allow_url_include']) {
+            $value = $this->_readFile($value);
+            if (PEAR::isError($value)) {
+                return $value;
+            }
+        }
+        return $this->_quoteText($value, $quote, $escape_wildcards);
     }
 
     // }}}
@@ -977,14 +1308,16 @@
      * Convert a text value into a DBMS specific format that is suitable to
      * compose query statements.
      *
-     * @param  $value
+     * @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)
+    function _quoteCLOB($value, $quote, $escape_wildcards)
     {
-        return $this->_quoteLOB($value);
+        return $this->_quoteLOB($value, $quote, $escape_wildcards);
     }
 
     // }}}
@@ -994,14 +1327,16 @@
      * Convert a text value into a DBMS specific format that is suitable to
      * compose query statements.
      *
-     * @param  $value
+     * @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)
+    function _quoteBLOB($value, $quote, $escape_wildcards)
     {
-        return $this->_quoteLOB($value);
+        return $this->_quoteLOB($value, $quote, $escape_wildcards);
     }
 
     // }}}
@@ -1012,13 +1347,15 @@
      * 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)
+    function _quoteBoolean($value, $quote, $escape_wildcards)
     {
-        return ($value ? "'Y'" : "'N'");
+        return ($value ? 1 : 0);
     }
 
     // }}}
@@ -1029,13 +1366,25 @@
      * 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)
+    function _quoteDate($value, $quote, $escape_wildcards)
     {
-       return $this->_quoteText($value);
+        if ($value === 'CURRENT_DATE') {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            if (isset($db->function) && is_object($db->function) && is_a($db->function, 'MDB2_Driver_Function_Common')) {
+                return $db->function->now('date');
+            }
+            return 'CURRENT_DATE';
+        }
+        return $this->_quoteText($value, $quote, $escape_wildcards);
     }
 
     // }}}
@@ -1046,13 +1395,25 @@
      * 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)
+    function _quoteTimestamp($value, $quote, $escape_wildcards)
     {
-       return $this->_quoteText($value);
+        if ($value === 'CURRENT_TIMESTAMP') {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            if (isset($db->function) && is_object($db->function) && is_a($db->function, 'MDB2_Driver_Function_Common')) {
+                return $db->function->now('timestamp');
+            }
+            return 'CURRENT_TIMESTAMP';
+        }
+        return $this->_quoteText($value, $quote, $escape_wildcards);
     }
 
     // }}}
@@ -1063,13 +1424,25 @@
      *       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)
+    function _quoteTime($value, $quote, $escape_wildcards)
     {
-       return $this->_quoteText($value);
+        if ($value === 'CURRENT_TIME') {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            if (isset($db->function) && is_object($db->function) && is_a($db->function, 'MDB2_Driver_Function_Common')) {
+                return $db->function->now('time');
+            }
+            return 'CURRENT_TIME';
+        }
+        return $this->_quoteText($value, $quote, $escape_wildcards);
     }
 
     // }}}
@@ -1080,13 +1453,23 @@
      * 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)
+    function _quoteFloat($value, $quote, $escape_wildcards)
     {
-       return $this->_quoteText($value);
+        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;
     }
 
     // }}}
@@ -1097,13 +1480,34 @@
      * 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)
+    function _quoteDecimal($value, $quote, $escape_wildcards)
     {
-       return $this->_quoteText($value);
+        $value = (string)$value;
+        $value = preg_replace('/[^\d\.,\-+eE]/', '', $value);
+        if (preg_match('/[^\.\d]/', $value)) {
+            if (strpos($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;
     }
 
     // }}}
@@ -1124,17 +1528,23 @@
             return $db;
         }
 
-        $fp = fopen($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 $db->raiseError(MDB2_ERROR, null, null,
-                    'writeLOBToFile: could not write to the output file');
+        if (preg_match('/^(\w+:\/\/)(.*)$/', $file, $match)) {
+            if ($match[1] == 'file://') {
+                $file = $match[2];
             }
         }
-        fclose($fp);
+
+        $fp = @fopen($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;
     }
 
@@ -1144,15 +1554,16 @@
     /**
      * retrieve LOB from the database
      *
-     * @param resource $lob stream handle
+     * @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['ressource'];
+        if (null === $lob['value']) {
+            $lob['value'] = $lob['resource'];
         }
+        $lob['loaded'] = true;
         return MDB2_OK;
     }
 
@@ -1184,7 +1595,7 @@
      * 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 resource $lob stream handle
+     * @param array $lob array
      * @return mixed true or false on success, a MDB2 error on failure
      * @access protected
      */
@@ -1209,7 +1620,7 @@
         $lob_index = $lob_data['wrapper_data']->lob_index;
         fclose($lob);
         if (isset($this->lobs[$lob_index])) {
-            $this->_destroyLOB($lob_index);
+            $this->_destroyLOB($this->lobs[$lob_index]);
             unset($this->lobs[$lob_index]);
         }
         return MDB2_OK;
@@ -1222,10 +1633,10 @@
      * Free any resources allocated during the lifetime of the large object
      * handler object.
      *
-     * @param int $lob_index from the lob array
+     * @param array $lob array
      * @access private
      */
-    function _destroyLOB($lob_index)
+    function _destroyLOB(&$lob)
     {
         return MDB2_OK;
     }
@@ -1258,6 +1669,170 @@
         }
         return implode(', ', $return);
     }
-}
 
-?>
\ No newline at end of file
+    // }}}
+    // {{{ 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 (null !== $operator) {
+            $operator = strtoupper($operator);
+            switch ($operator) {
+            // case insensitive
+            case 'ILIKE':
+                if (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 'NOT ILIKE':
+                if (null === $field) {
+                    return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                        'case insensitive NOT ILIKE matching requires passing the field name', __FUNCTION__);
+                }
+                $db->loadModule('Function', null, true);
+                $match = $db->function->lower($field).' NOT LIKE ';
+                break;
+            // case sensitive
+            case 'LIKE':
+                $match = (null === $field) ? 'LIKE ' : ($field.' LIKE ');
+                break;
+            case 'NOT LIKE':
+                $match = (null === $field) ? 'NOT LIKE ' : ($field.' NOT 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 {
+                $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;
+    }
+}
+?>

--
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