<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Author: Lukas Smith <smith@pooteeweet.org> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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//
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require_once 'MDB2/Driver/Manager/Common.php';
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/**
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* MDB2 MySQLi driver for the management modules
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Driver_Manager_mysqli extends MDB2_Driver_Manager_Common
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{
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// {{{ properties
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var $verified_table_types = array();#
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// }}}
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// }}}
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// {{{ _verifyTableType()
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/**
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* verify that chosen transactional table hanlder is available in the database
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*
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* @param string $table_type name of the table handler
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access protected
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*/
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function _verifyTableType($table_type)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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switch (strtoupper($table_type)) {
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case 'BERKELEYDB':
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case 'BDB':
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$check = array('have_bdb');
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break;
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case 'INNODB':
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$check = array('have_innobase', 'have_innodb');
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break;
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case 'GEMINI':
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$check = array('have_gemini');
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break;
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case 'HEAP':
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case 'ISAM':
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case 'MERGE':
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case 'MRG_MYISAM':
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case 'MYISAM':
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case '':
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return MDB2_OK;
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default:
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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$table_type.' is not a supported table type');
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}
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if (isset($this->verified_table_types[$table_type])
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&& $this->verified_table_types[$table_type] == $db->connection
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) {
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return MDB2_OK;
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}
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$not_supported = false;
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for ($i = 0, $j = count($check); $i < $j; ++$i) {
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$query = 'SHOW VARIABLES LIKE '.$db->quote($check[$i], 'text');
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$has = $db->queryRow($query, null, MDB2_FETCHMODE_ORDERED);
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if (PEAR::isError($has)) {
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return $has;
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}
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if (is_array($has)) {
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$not_supported = true;
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if ($has[1] == 'YES') {
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$this->verified_table_types[$table_type] = $db->connection;
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return MDB2_OK;
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}
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}
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}
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if ($not_supported) {
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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$table_type.' is not a supported table type by this MySQL database server');
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'could not tell if '.$table_type.' is a supported table type');
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}
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// }}}
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// {{{ createDatabase()
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/**
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* create a new database
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*
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* @param string $name name of the database that should be created
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createDatabase($name)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$query = 'CREATE DATABASE '.$name;
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$result = $db->query($query);
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if (PEAR::isError($result)) {
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return $result;
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ dropDatabase()
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/**
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* drop an existing database
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*
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* @param string $name name of the database that should be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function dropDatabase($name)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$query = 'DROP DATABASE '.$name;
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$result = $db->query($query);
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if (PEAR::isError($result)) {
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return $result;
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ createTable()
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/**
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* create a new table
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*
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* @param string $name Name of the database that should be created
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* @param array $fields Associative array that contains the definition of each field of the new table
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* The indexes of the array entries are the names of the fields of the table an
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* the array entry values are associative arrays like those that are meant to be
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* passed with the field definitions to get[Type]Declaration() functions.
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*
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* Example
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* array(
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*
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* 'id' => array(
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* 'type' => 'integer',
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* 'unsigned' => 1
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* 'notnull' => 1
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* 'default' => 0
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* ),
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* 'name' => array(
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* 'type' => 'text',
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* 'length' => 12
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* ),
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* 'password' => array(
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* 'type' => 'text',
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* 'length' => 12
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* )
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* );
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createTable($name, $fields)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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if (!$name) {
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return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
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'createTable: no valid table name specified');
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}
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if (empty($fields)) {
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return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
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'createTable: no fields specified for table "'.$name.'"');
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}
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$verify = $this->_verifyTableType($db->options['default_table_type']);
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if (PEAR::isError($verify)) {
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return $verify;
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}
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$query_fields = $this->getFieldDeclarationList($fields);
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if (PEAR::isError($query_fields)) {
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return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
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'createTable: '.$this->getUserinfo());
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}
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$query = "CREATE TABLE $name ($query_fields)".(strlen($db->options['default_table_type'])
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? ' TYPE='.$db->options['default_table_type'] : '');
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return $db->query($query);
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}
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// }}}
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// {{{ alterTable()
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/**
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* alter an existing table
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*
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* @param string $name name of the table that is intended to be changed.
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* @param array $changes associative array that contains the details of each type
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* of change that is intended to be performed. The types of
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* changes that are currently supported are defined as follows:
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*
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* name
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*
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* New name for the table.
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*
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* add
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*
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* Associative array with the names of fields to be added as
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* indexes of the array. The value of each entry of the array
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* should be set to another associative array with the properties
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* of the fields to be added. The properties of the fields should
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* be the same as defined by the Metabase parser.
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*
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*
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* remove
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*
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* Associative array with the names of fields to be removed as indexes
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* of the array. Currently the values assigned to each entry are ignored.
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* An empty array should be used for future compatibility.
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*
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* rename
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*
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* Associative array with the names of fields to be renamed as indexes
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* of the array. The value of each entry of the array should be set to
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* another associative array with the entry named name with the new
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* field name and the entry named Declaration that is expected to contain
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* the portion of the field declaration already in DBMS specific SQL code
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* as it is used in the CREATE TABLE statement.
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*
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* change
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*
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* Associative array with the names of the fields to be changed as indexes
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* of the array. Keep in mind that if it is intended to change either the
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* name of a field and any other properties, the change array entries
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* should have the new names of the fields as array indexes.
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*
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* The value of each entry of the array should be set to another associative
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* array with the properties of the fields to that are meant to be changed as
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* array entries. These entries should be assigned to the new values of the
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* respective properties. The properties of the fields should be the same
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* as defined by the Metabase parser.
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*
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* Example
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* array(
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* 'name' => 'userlist',
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* 'add' => array(
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* 'quota' => array(
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* 'type' => 'integer',
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* 'unsigned' => 1
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* )
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* ),
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* 'remove' => array(
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* 'file_limit' => array(),
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* 'time_limit' => array()
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* ),
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* 'change' => array(
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* 'gender' => array(
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* 'default' => 'M',
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* )
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* ),
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* 'rename' => array(
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* 'sex' => array(
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* 'name' => 'gender',
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* )
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* )
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* )
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*
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* @param boolean $check indicates whether the function should just check if the DBMS driver
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* can perform the requested table alterations if the value is true or
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* actually perform them otherwise.
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* @access public
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*/
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function alterTable($name, $changes, $check)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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foreach ($changes as $change_name => $change) {
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switch ($change_name) {
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case 'add':
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case 'remove':
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case 'change':
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case 'rename':
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case 'name':
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break;
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default:
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return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
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'alterTable: change type "'.$change_name.'" not yet supported');
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}
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}
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if ($check) {
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return MDB2_OK;
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}
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$query = (array_key_exists('name', $changes) ? 'RENAME AS '.$changes['name'] : '');
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if (array_key_exists('add', $changes)) {
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foreach ($changes['add'] as $field_name => $field) {
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$type_declaration = $db->getDeclaration($field['type'], $field_name, $field);
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if (PEAR::isError($type_declaration)) {
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return $err;
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}
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if ($query) {
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$query.= ', ';
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}
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$query.= 'ADD ' . $type_declaration;
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}
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}
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if (array_key_exists('remove', $changes)) {
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foreach ($changes['remove'] as $field_name => $field) {
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if ($query) {
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$query.= ', ';
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}
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$query.= 'DROP ' . $field_name;
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}
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}
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$rename = array();
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if (array_key_exists('rename', $changes)) {
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foreach ($changes['rename'] as $field_name => $field) {
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$rename[$field['name']] = $field_name;
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}
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}
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if (array_key_exists('change', $changes)) {
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foreach ($changes['change'] as $field_name => $field) {
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if ($query) {
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$query.= ', ';
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}
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if (isset($rename[$field_name])) {
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$old_field_name = $rename[$field_name];
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unset($rename[$field_name]);
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} else {
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$old_field_name = $field_name;
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}
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$query.= "CHANGE $field_name " . $db->getDeclaration($field['type'], $old_field_name, $field);
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}
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}
|
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if (!empty($rename)) {
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foreach ($rename as $rename_name => $renamed_field) {
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if ($query) {
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$query.= ', ';
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}
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$old_field_name = $renamed_field;
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$field = $changes['rename'][$old_field_name];
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$query.= 'CHANGE ' . $db->getDeclaration($field['type'], $old_field_name, $field);
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}
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}
|
|
if (!$query) {
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return MDB2_OK;
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}
|
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return $db->query("ALTER TABLE $name $query");
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}
|
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// }}}
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// {{{ listDatabases()
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/**
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* list all databases
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*
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function listDatabases()
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
|
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$databases = $db->queryCol('SHOW DATABASES');
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return $databases;
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}
|
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// }}}
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// {{{ listUsers()
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/**
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* list all users
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*
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* @return mixed data array on success, a MDB2 error on failure
|
* @access public
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*/
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function listUsers()
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
|
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$users = $db->queryCol('SELECT DISTINCT USER FROM USER');
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return $users;
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}
|
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// }}}
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// {{{ listTables()
|
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/**
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* list all tables in the current database
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*
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* @return mixed data array on success, a MDB2 error on failure
|
* @access public
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*/
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function listTables()
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
|
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$table_names = $db->queryCol('SHOW TABLES');
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if (PEAR::isError($table_names)) {
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return $table_names;
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}
|
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$tables = array();
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for ($i = 0, $j = count($table_names); $i < $j; ++$i) {
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if (!$this->_isSequenceName($table_names[$i]))
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$tables[] = $table_names[$i];
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}
|
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$tables = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $tables);
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}
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return $tables;
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}
|
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// }}}
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// {{{ listTableFields()
|
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/**
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* list all fields in a tables in the current database
|
*
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* @param string $table name of table that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
|
* @access public
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*/
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function listTableFields($table)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
|
}
|
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$fields = $db->queryCol("SHOW COLUMNS FROM $table");
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if (PEAR::isError($fields)) {
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return $fields;
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}
|
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$fields = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $fields);
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}
|
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return $fields;
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}
|
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// }}}
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// {{{ createIndex()
|
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/**
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* get the stucture of a field into an array
|
*
|
* @param string $table name of the table on which the index is to be created
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* @param string $name name of the index to be created
|
* @param array $definition associative array that defines properties of the index to be created.
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* Currently, only one property named FIELDS is supported. This property
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* is also an associative with the names of the index fields as array
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* indexes. Each entry of this array is set to another type of associative
|
* array that specifies properties of the index that are specific to
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* each field.
|
*
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* Currently, only the sorting property is supported. It should be used
|
* to define the sorting direction of the index. It may be set to either
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* ascending or descending.
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*
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* Not all DBMS support index sorting direction configuration. The DBMS
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* drivers of those that do not support it ignore this property. Use the
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* function supports() to determine whether the DBMS driver can manage indexes.
|
|
* Example
|
* array(
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* 'fields' => array(
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* 'user_name' => array(
|
* 'sorting' => 'ascending'
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* ),
|
* 'last_login' => array()
|
* )
|
* )
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
* @access public
|
*/
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function createIndex($table, $name, $definition)
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{
|
$db =& $this->getDBInstance();
|
if (PEAR::isError($db)) {
|
return $db;
|
}
|
|
if (array_key_exists('primary', $definition) && $definition['primary']) {
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$type = 'PRIMARY';
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$name = 'KEY';
|
} elseif (array_key_exists('unique', $definition) && $definition['unique']) {
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$type = 'UNIQUE';
|
} else {
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$type = 'INDEX';
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}
|
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$query = "ALTER TABLE $table ADD $type $name (";
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$query.= implode(', ', array_keys($definition['fields']));
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$query.= ')';
|
|
return $db->query($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;
|
}
|
|
return $db->query("ALTER TABLE $table DROP INDEX $name");
|
}
|
|
// }}}
|
// {{{ listTableIndexes()
|
|
/**
|
* list all indexes in a table
|
*
|
* @param string $table name of table that should be used in method
|
* @return mixed data array on success, a MDB2 error on failure
|
* @access public
|
*/
|
function listTableIndexes($table)
|
{
|
$db =& $this->getDBInstance();
|
if (PEAR::isError($db)) {
|
return $db;
|
}
|
|
$key_name = 'Key_name';
|
if ($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);
|
}
|
}
|
|
$query = "SHOW INDEX FROM $table";
|
$indexes_all = $db->queryCol($query, 'text', $key_name);
|
if (PEAR::isError($indexes_all)) {
|
return $indexes_all;
|
}
|
|
$indexes = array_unique($indexes_all);
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
$indexes = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $indexes);
|
}
|
|
return $indexes;
|
}
|
|
// }}}
|
// {{{ 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 = $db->getSequenceName($seq_name);
|
$seqcol_name = $db->options['seqcol_name'];
|
$result = $this->_verifyTableType($db->options['default_table_type']);
|
if (PEAR::isError($result)) {
|
return $result;
|
}
|
|
$res = $db->query("CREATE TABLE $sequence_name".
|
"($seqcol_name INT NOT NULL AUTO_INCREMENT, PRIMARY KEY ($seqcol_name))".
|
(strlen($db->options['default_table_type']) ? ' TYPE='.$db->options['default_table_type'] : '')
|
);
|
|
if (PEAR::isError($res)) {
|
return $res;
|
}
|
|
if ($start == 1) {
|
return MDB2_OK;
|
}
|
|
$res = $db->query("INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')');
|
if (!PEAR::isError($res)) {
|
return MDB2_OK;
|
}
|
|
// Handle error
|
$result = $db->query("DROP TABLE $sequence_name");
|
if (PEAR::isError($result)) {
|
return $db->raiseError(MDB2_ERROR, null, null,
|
'createSequence: could not drop inconsistent sequence table ('.
|
$result->getMessage().' ('.$result->getUserinfo().'))');
|
}
|
|
return $db->raiseError(MDB2_ERROR, null, null,
|
'createSequence: could not create sequence table ('.
|
$res->getMessage().' ('.$res->getUserinfo().'))');
|
}
|
|
// }}}
|
// {{{ 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 = $db->getSequenceName($seq_name);
|
return $db->query("DROP TABLE $sequence_name");
|
}
|
|
// }}}
|
// {{{ listSequences()
|
|
/**
|
* list all sequences in the current database
|
*
|
* @return mixed data array on success, a MDB2 error on failure
|
* @access public
|
*/
|
function listSequences()
|
{
|
$db =& $this->getDBInstance();
|
if (PEAR::isError($db)) {
|
return $db;
|
}
|
|
$table_names = $db->queryCol('SHOW TABLES');
|
if (PEAR::isError($table_names)) {
|
return $table_names;
|
}
|
|
$sequences = array();
|
for ($i = 0, $j = count($table_names); $i < $j; ++$i) {
|
if ($sqn = $this->_isSequenceName($table_names[$i])) {
|
$sequences[] = $sqn;
|
}
|
}
|
|
return $sequences;
|
}
|
|
// }}}
|
}
|
?>
|
