1391 lines
54 KiB
PHP
1391 lines
54 KiB
PHP
<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith, Lorenzo Alberton |
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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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// | Authors: Lukas Smith <smith@pooteeweet.org> |
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// | Lorenzo Alberton <l.alberton@quipo.it> |
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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 SQLite 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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* @author Lorenzo Alberton <l.alberton@quipo.it>
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*/
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class MDB2_Driver_Manager_sqlite extends MDB2_Driver_Manager_Common
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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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* @param array $options array with charset info
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createDatabase($name, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$database_file = $db->_getDatabaseFile($name);
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if (file_exists($database_file)) {
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return $db->raiseError(MDB2_ERROR_ALREADY_EXISTS, null, null,
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'database already exists', __FUNCTION__);
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}
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$php_errormsg = '';
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$handle = @sqlite_open($database_file, $db->dsn['mode'], $php_errormsg);
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if (!$handle) {
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return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
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(isset($php_errormsg) ? $php_errormsg : 'could not create the database file'), __FUNCTION__);
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}
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if (!empty($options['charset'])) {
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$query = 'PRAGMA encoding = ' . $db->quote($options['charset'], 'text');
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@sqlite_query($query, $handle);
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}
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@sqlite_close($handle);
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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 = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$database_file = $db->_getDatabaseFile($name);
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if (!@file_exists($database_file)) {
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return $db->raiseError(MDB2_ERROR_CANNOT_DROP, null, null,
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'database does not exist', __FUNCTION__);
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}
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$result = @unlink($database_file);
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if (!$result) {
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return $db->raiseError(MDB2_ERROR_CANNOT_DROP, null, null,
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(isset($php_errormsg) ? $php_errormsg : 'could not remove the database file'), __FUNCTION__);
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ _getAdvancedFKOptions()
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/**
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* Return the FOREIGN KEY query section dealing with non-standard options
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* as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
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*
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* @param array $definition
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* @return string
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* @access protected
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*/
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function _getAdvancedFKOptions($definition)
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{
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$query = '';
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if (!empty($definition['match'])) {
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$query .= ' MATCH '.$definition['match'];
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}
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if (!empty($definition['onupdate']) && (strtoupper($definition['onupdate']) != 'NO ACTION')) {
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$query .= ' ON UPDATE '.$definition['onupdate'];
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}
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if (!empty($definition['ondelete']) && (strtoupper($definition['ondelete']) != 'NO ACTION')) {
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$query .= ' ON DELETE '.$definition['ondelete'];
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}
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if (!empty($definition['deferrable'])) {
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$query .= ' DEFERRABLE';
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} else {
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$query .= ' NOT DEFERRABLE';
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}
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if (!empty($definition['initiallydeferred'])) {
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$query .= ' INITIALLY DEFERRED';
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} else {
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$query .= ' INITIALLY IMMEDIATE';
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}
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return $query;
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}
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// }}}
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// {{{ _getCreateTableQuery()
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/**
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* Create a basic SQL query for a new table creation
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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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* @param array $options An associative array of table options
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* @return mixed string (the SQL query) on success, a MDB2 error on failure
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* @see createTable()
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*/
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function _getCreateTableQuery($name, $fields, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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if (!$name) {
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return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
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'no valid table name specified', __FUNCTION__);
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}
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if (empty($fields)) {
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return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
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'no fields specified for table "'.$name.'"', __FUNCTION__);
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}
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$query_fields = $this->getFieldDeclarationList($fields);
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if (MDB2::isError($query_fields)) {
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return $query_fields;
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}
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if (!empty($options['primary'])) {
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$query_fields.= ', PRIMARY KEY ('.implode(', ', array_keys($options['primary'])).')';
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}
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if (!empty($options['foreign_keys'])) {
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foreach ($options['foreign_keys'] as $fkname => $fkdef) {
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if (empty($fkdef)) {
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continue;
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}
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$query_fields.= ', CONSTRAINT '.$fkname.' FOREIGN KEY ('.implode(', ', array_keys($fkdef['fields'])).')';
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$query_fields.= ' REFERENCES '.$fkdef['references']['table'].' ('.implode(', ', array_keys($fkdef['references']['fields'])).')';
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$query_fields.= $this->_getAdvancedFKOptions($fkdef);
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}
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}
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$name = $db->quoteIdentifier($name, true);
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$result = 'CREATE ';
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if (!empty($options['temporary'])) {
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$result .= $this->_getTemporaryTableQuery();
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}
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$result .= " TABLE $name ($query_fields)";
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return $result;
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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
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* of each field of the new table
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* @param array $options An associative array of table options
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createTable($name, $fields, $options = array())
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{
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$result = parent::createTable($name, $fields, $options);
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if (MDB2::isError($result)) {
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return $result;
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}
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// create triggers to enforce FOREIGN KEY constraints
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if (!empty($options['foreign_keys'])) {
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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foreach ($options['foreign_keys'] as $fkname => $fkdef) {
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if (empty($fkdef)) {
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continue;
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}
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//set actions to default if not set
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$fkdef['onupdate'] = empty($fkdef['onupdate']) ? $db->options['default_fk_action_onupdate'] : strtoupper($fkdef['onupdate']);
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$fkdef['ondelete'] = empty($fkdef['ondelete']) ? $db->options['default_fk_action_ondelete'] : strtoupper($fkdef['ondelete']);
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$trigger_names = array(
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'insert' => $fkname.'_insert_trg',
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'update' => $fkname.'_update_trg',
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'pk_update' => $fkname.'_pk_update_trg',
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'pk_delete' => $fkname.'_pk_delete_trg',
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);
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//create the [insert|update] triggers on the FK table
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$table_fields = array_keys($fkdef['fields']);
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$referenced_fields = array_keys($fkdef['references']['fields']);
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$query = 'CREATE TRIGGER %s BEFORE %s ON '.$name
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.' FOR EACH ROW BEGIN'
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.' SELECT RAISE(ROLLBACK, \'%s on table "'.$name.'" violates FOREIGN KEY constraint "'.$fkname.'"\')'
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.' WHERE (SELECT ';
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$aliased_fields = array();
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foreach ($referenced_fields as $field) {
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$aliased_fields[] = $fkdef['references']['table'] .'.'.$field .' AS '.$field;
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}
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$query .= implode(',', $aliased_fields)
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.' FROM '.$fkdef['references']['table']
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.' WHERE ';
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$conditions = array();
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for ($i=0; $i<count($table_fields); $i++) {
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$conditions[] = $referenced_fields[$i] .' = NEW.'.$table_fields[$i];
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}
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$query .= implode(' AND ', $conditions).') IS NULL; END;';
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$result = $db->exec(sprintf($query, $trigger_names['insert'], 'INSERT', 'insert'));
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if (MDB2::isError($result)) {
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return $result;
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}
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$result = $db->exec(sprintf($query, $trigger_names['update'], 'UPDATE', 'update'));
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if (MDB2::isError($result)) {
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return $result;
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}
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//create the ON [UPDATE|DELETE] triggers on the primary table
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$restrict_action = 'SELECT RAISE(ROLLBACK, \'%s on table "'.$name.'" violates FOREIGN KEY constraint "'.$fkname.'"\')'
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.' WHERE (SELECT ';
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$aliased_fields = array();
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foreach ($table_fields as $field) {
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$aliased_fields[] = $name .'.'.$field .' AS '.$field;
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}
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$restrict_action .= implode(',', $aliased_fields)
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.' FROM '.$name
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.' WHERE ';
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$conditions = array();
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$new_values = array();
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$null_values = array();
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for ($i=0; $i<count($table_fields); $i++) {
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$conditions[] = $table_fields[$i] .' = OLD.'.$referenced_fields[$i];
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$new_values[] = $table_fields[$i] .' = NEW.'.$referenced_fields[$i];
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$null_values[] = $table_fields[$i] .' = NULL';
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}
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$conditions2 = array();
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for ($i=0; $i<count($referenced_fields); $i++) {
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$conditions2[] = 'NEW.'.$referenced_fields[$i] .' <> OLD.'.$referenced_fields[$i];
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}
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$restrict_action .= implode(' AND ', $conditions).') IS NOT NULL'
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.' AND (' .implode(' OR ', $conditions2) .')';
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$cascade_action_update = 'UPDATE '.$name.' SET '.implode(', ', $new_values) .' WHERE '.implode(' AND ', $conditions);
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$cascade_action_delete = 'DELETE FROM '.$name.' WHERE '.implode(' AND ', $conditions);
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$setnull_action = 'UPDATE '.$name.' SET '.implode(', ', $null_values).' WHERE '.implode(' AND ', $conditions);
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if ('SET DEFAULT' == $fkdef['onupdate'] || 'SET DEFAULT' == $fkdef['ondelete']) {
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$db->loadModule('Reverse', null, true);
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$default_values = array();
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foreach ($table_fields as $table_field) {
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$field_definition = $db->reverse->getTableFieldDefinition($name, $field);
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if (MDB2::isError($field_definition)) {
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return $field_definition;
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}
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$default_values[] = $table_field .' = '. $field_definition[0]['default'];
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}
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$setdefault_action = 'UPDATE '.$name.' SET '.implode(', ', $default_values).' WHERE '.implode(' AND ', $conditions);
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}
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$query = 'CREATE TRIGGER %s'
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.' %s ON '.$fkdef['references']['table']
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.' FOR EACH ROW BEGIN ';
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if ('CASCADE' == $fkdef['onupdate']) {
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$sql_update = sprintf($query, $trigger_names['pk_update'], 'AFTER UPDATE', 'update') . $cascade_action_update. '; END;';
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} elseif ('SET NULL' == $fkdef['onupdate']) {
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$sql_update = sprintf($query, $trigger_names['pk_update'], 'BEFORE UPDATE', 'update') . $setnull_action. '; END;';
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} elseif ('SET DEFAULT' == $fkdef['onupdate']) {
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$sql_update = sprintf($query, $trigger_names['pk_update'], 'BEFORE UPDATE', 'update') . $setdefault_action. '; END;';
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} elseif ('NO ACTION' == $fkdef['onupdate']) {
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$sql_update = sprintf($query.$restrict_action, $trigger_names['pk_update'], 'AFTER UPDATE', 'update') . '; END;';
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} elseif ('RESTRICT' == $fkdef['onupdate']) {
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$sql_update = sprintf($query.$restrict_action, $trigger_names['pk_update'], 'BEFORE UPDATE', 'update') . '; END;';
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}
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if ('CASCADE' == $fkdef['ondelete']) {
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$sql_delete = sprintf($query, $trigger_names['pk_delete'], 'AFTER DELETE', 'delete') . $cascade_action_delete. '; END;';
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} elseif ('SET NULL' == $fkdef['ondelete']) {
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$sql_delete = sprintf($query, $trigger_names['pk_delete'], 'BEFORE DELETE', 'delete') . $setnull_action. '; END;';
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} elseif ('SET DEFAULT' == $fkdef['ondelete']) {
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$sql_delete = sprintf($query, $trigger_names['pk_delete'], 'BEFORE DELETE', 'delete') . $setdefault_action. '; END;';
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} elseif ('NO ACTION' == $fkdef['ondelete']) {
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$sql_delete = sprintf($query.$restrict_action, $trigger_names['pk_delete'], 'AFTER DELETE', 'delete') . '; END;';
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} elseif ('RESTRICT' == $fkdef['ondelete']) {
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$sql_delete = sprintf($query.$restrict_action, $trigger_names['pk_delete'], 'BEFORE DELETE', 'delete') . '; END;';
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}
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if (MDB2::isError($result)) {
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return $result;
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}
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$result = $db->exec($sql_delete);
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if (MDB2::isError($result)) {
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return $result;
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}
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$result = $db->exec($sql_update);
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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}
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if (MDB2::isError($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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// {{{ dropTable()
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/**
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* drop an existing table
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*
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* @param string $name name of the table that should be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function dropTable($name)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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//delete the triggers associated to existing FK constraints
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$constraints = $this->listTableConstraints($name);
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if (!MDB2::isError($constraints) && !empty($constraints)) {
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$db->loadModule('Reverse', null, true);
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foreach ($constraints as $constraint) {
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$definition = $db->reverse->getTableConstraintDefinition($name, $constraint);
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if (!MDB2::isError($definition) && !empty($definition['foreign'])) {
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$result = $this->_dropFKTriggers($name, $constraint, $definition['references']['table']);
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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}
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}
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$name = $db->quoteIdentifier($name, true);
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$result = $db->exec("DROP TABLE $name");
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if (MDB2::isError($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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// {{{ vacuum()
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/**
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* Optimize (vacuum) all the tables in the db (or only the specified table)
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* and optionally run ANALYZE.
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*
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* @param string $table table name (all the tables if empty)
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* @param array $options an array with driver-specific options:
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* - timeout [int] (in seconds) [mssql-only]
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* - analyze [boolean] [pgsql and mysql]
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* - full [boolean] [pgsql-only]
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* - freeze [boolean] [pgsql-only]
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*
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* @return mixed MDB2_OK success, a MDB2 error on failure
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* @access public
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*/
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function vacuum($table = null, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$query = 'VACUUM';
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if (!empty($table)) {
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$query .= ' '.$db->quoteIdentifier($table, true);
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}
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$result = $db->exec($query);
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if (MDB2::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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// {{{ 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
|
|
* of change that is intended to be performed. The types of
|
|
* changes that are currently supported are defined as follows:
|
|
*
|
|
* name
|
|
*
|
|
* New name for the table.
|
|
*
|
|
* add
|
|
*
|
|
* Associative array with the names of fields to be added as
|
|
* indexes of the array. The value of each entry of the array
|
|
* should be set to another associative array with the properties
|
|
* of the fields to be added. The properties of the fields should
|
|
* be the same as defined by the MDB2 parser.
|
|
*
|
|
*
|
|
* remove
|
|
*
|
|
* Associative array with the names of fields to be removed as indexes
|
|
* of the array. Currently the values assigned to each entry are ignored.
|
|
* An empty array should be used for future compatibility.
|
|
*
|
|
* rename
|
|
*
|
|
* Associative array with the names of fields to be renamed as indexes
|
|
* of the array. The value of each entry of the array should be set to
|
|
* another associative array with the entry named name with the new
|
|
* field name and the entry named Declaration that is expected to contain
|
|
* the portion of the field declaration already in DBMS specific SQL code
|
|
* as it is used in the CREATE TABLE statement.
|
|
*
|
|
* change
|
|
*
|
|
* Associative array with the names of the fields to be changed as indexes
|
|
* of the array. Keep in mind that if it is intended to change either the
|
|
* name of a field and any other properties, the change array entries
|
|
* should have the new names of the fields as array indexes.
|
|
*
|
|
* The value of each entry of the array should be set to another associative
|
|
* array with the properties of the fields to that are meant to be changed as
|
|
* array entries. These entries should be assigned to the new values of the
|
|
* respective properties. The properties of the fields should be the same
|
|
* as defined by the MDB2 parser.
|
|
*
|
|
* Example
|
|
* array(
|
|
* 'name' => 'userlist',
|
|
* 'add' => array(
|
|
* 'quota' => array(
|
|
* 'type' => 'integer',
|
|
* 'unsigned' => 1
|
|
* )
|
|
* ),
|
|
* 'remove' => array(
|
|
* 'file_limit' => array(),
|
|
* 'time_limit' => array()
|
|
* ),
|
|
* 'change' => array(
|
|
* 'name' => array(
|
|
* 'length' => '20',
|
|
* 'definition' => array(
|
|
* 'type' => 'text',
|
|
* 'length' => 20,
|
|
* ),
|
|
* )
|
|
* ),
|
|
* 'rename' => array(
|
|
* 'sex' => array(
|
|
* 'name' => 'gender',
|
|
* 'definition' => array(
|
|
* 'type' => 'text',
|
|
* 'length' => 1,
|
|
* 'default' => 'M',
|
|
* ),
|
|
* )
|
|
* )
|
|
* )
|
|
*
|
|
* @param boolean $check indicates whether the function should just check if the DBMS driver
|
|
* can perform the requested table alterations if the value is true or
|
|
* actually perform them otherwise.
|
|
* @access public
|
|
*
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
*/
|
|
function alterTable($name, $changes, $check, $options = array())
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
foreach ($changes as $change_name => $change) {
|
|
switch ($change_name) {
|
|
case 'add':
|
|
case 'remove':
|
|
case 'change':
|
|
case 'name':
|
|
case 'rename':
|
|
break;
|
|
default:
|
|
return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
|
|
'change type "'.$change_name.'" not yet supported', __FUNCTION__);
|
|
}
|
|
}
|
|
|
|
if ($check) {
|
|
return MDB2_OK;
|
|
}
|
|
|
|
$db->loadModule('Reverse', null, true);
|
|
|
|
// actually sqlite 2.x supports no ALTER TABLE at all .. so we emulate it
|
|
$fields = $db->manager->listTableFields($name);
|
|
if (MDB2::isError($fields)) {
|
|
return $fields;
|
|
}
|
|
|
|
$fields = array_flip($fields);
|
|
foreach ($fields as $field => $value) {
|
|
$definition = $db->reverse->getTableFieldDefinition($name, $field);
|
|
if (MDB2::isError($definition)) {
|
|
return $definition;
|
|
}
|
|
$fields[$field] = $definition[0];
|
|
}
|
|
|
|
$indexes = $db->manager->listTableIndexes($name);
|
|
if (MDB2::isError($indexes)) {
|
|
return $indexes;
|
|
}
|
|
|
|
$indexes = array_flip($indexes);
|
|
foreach ($indexes as $index => $value) {
|
|
$definition = $db->reverse->getTableIndexDefinition($name, $index);
|
|
if (MDB2::isError($definition)) {
|
|
return $definition;
|
|
}
|
|
$indexes[$index] = $definition;
|
|
}
|
|
|
|
$constraints = $db->manager->listTableConstraints($name);
|
|
if (MDB2::isError($constraints)) {
|
|
return $constraints;
|
|
}
|
|
|
|
if (!array_key_exists('foreign_keys', $options)) {
|
|
$options['foreign_keys'] = array();
|
|
}
|
|
$constraints = array_flip($constraints);
|
|
foreach ($constraints as $constraint => $value) {
|
|
if (!empty($definition['primary'])) {
|
|
if (!array_key_exists('primary', $options)) {
|
|
$options['primary'] = $definition['fields'];
|
|
//remove from the $constraint array, it's already handled by createTable()
|
|
unset($constraints[$constraint]);
|
|
}
|
|
} else {
|
|
$c_definition = $db->reverse->getTableConstraintDefinition($name, $constraint);
|
|
if (MDB2::isError($c_definition)) {
|
|
return $c_definition;
|
|
}
|
|
if (!empty($c_definition['foreign'])) {
|
|
if (!array_key_exists($constraint, $options['foreign_keys'])) {
|
|
$options['foreign_keys'][$constraint] = $c_definition;
|
|
}
|
|
//remove from the $constraint array, it's already handled by createTable()
|
|
unset($constraints[$constraint]);
|
|
} else {
|
|
$constraints[$constraint] = $c_definition;
|
|
}
|
|
}
|
|
}
|
|
|
|
$name_new = $name;
|
|
$create_order = $select_fields = array_keys($fields);
|
|
foreach ($changes as $change_name => $change) {
|
|
switch ($change_name) {
|
|
case 'add':
|
|
foreach ($change as $field_name => $field) {
|
|
$fields[$field_name] = $field;
|
|
$create_order[] = $field_name;
|
|
}
|
|
break;
|
|
case 'remove':
|
|
foreach ($change as $field_name => $field) {
|
|
unset($fields[$field_name]);
|
|
$select_fields = array_diff($select_fields, array($field_name));
|
|
$create_order = array_diff($create_order, array($field_name));
|
|
}
|
|
break;
|
|
case 'change':
|
|
foreach ($change as $field_name => $field) {
|
|
$fields[$field_name] = $field['definition'];
|
|
}
|
|
break;
|
|
case 'name':
|
|
$name_new = $change;
|
|
break;
|
|
case 'rename':
|
|
foreach ($change as $field_name => $field) {
|
|
unset($fields[$field_name]);
|
|
$fields[$field['name']] = $field['definition'];
|
|
$create_order[array_search($field_name, $create_order)] = $field['name'];
|
|
}
|
|
break;
|
|
default:
|
|
return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
|
|
'change type "'.$change_name.'" not yet supported', __FUNCTION__);
|
|
}
|
|
}
|
|
|
|
$data = null;
|
|
if (!empty($select_fields)) {
|
|
$query = 'SELECT '.implode(', ', $select_fields).' FROM '.$db->quoteIdentifier($name, true);
|
|
$data = $db->queryAll($query, null, MDB2_FETCHMODE_ORDERED);
|
|
}
|
|
|
|
$result = $this->dropTable($name);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
|
|
$result = $this->createTable($name_new, $fields, $options);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
|
|
foreach ($indexes as $index => $definition) {
|
|
$this->createIndex($name_new, $index, $definition);
|
|
}
|
|
|
|
foreach ($constraints as $constraint => $definition) {
|
|
$this->createConstraint($name_new, $constraint, $definition);
|
|
}
|
|
|
|
if (!empty($select_fields) && !empty($data)) {
|
|
$query = 'INSERT INTO '.$db->quoteIdentifier($name_new, true);
|
|
$query.= '('.implode(', ', array_slice(array_keys($fields), 0, count($select_fields))).')';
|
|
$query.=' VALUES (?'.str_repeat(', ?', (count($select_fields) - 1)).')';
|
|
$stmt = $db->prepare($query, null, MDB2_PREPARE_MANIP);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
foreach ($data as $row) {
|
|
$result = $stmt->execute($row);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
}
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listDatabases()
|
|
|
|
/**
|
|
* list all databases
|
|
*
|
|
* @return mixed array of database names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listDatabases()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'list databases is not supported', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listUsers()
|
|
|
|
/**
|
|
* list all users
|
|
*
|
|
* @return mixed array of user names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listUsers()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'list databases is not supported', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listViews()
|
|
|
|
/**
|
|
* list all views in the current database
|
|
*
|
|
* @return mixed array of view names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listViews()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = "SELECT name FROM sqlite_master WHERE type='view' AND sql NOT NULL";
|
|
$result = $db->queryCol($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableViews()
|
|
|
|
/**
|
|
* list the views in the database that reference a given table
|
|
*
|
|
* @param string table for which all referenced views should be found
|
|
* @return mixed array of view names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableViews($table)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = "SELECT name, sql FROM sqlite_master WHERE type='view' AND sql NOT NULL";
|
|
$views = $db->queryAll($query, array('text', 'text'), MDB2_FETCHMODE_ASSOC);
|
|
if (MDB2::isError($views)) {
|
|
return $views;
|
|
}
|
|
$result = array();
|
|
foreach ($views as $row) {
|
|
if (preg_match("/^create view .* \bfrom\b\s+\b{$table}\b /i", $row['sql'])) {
|
|
if (!empty($row['name'])) {
|
|
$result[$row['name']] = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_change_key_case($result, $db->options['field_case']);
|
|
}
|
|
return array_keys($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTables()
|
|
|
|
/**
|
|
* list all tables in the current database
|
|
*
|
|
* @return mixed array of table names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTables()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = "SELECT name FROM sqlite_master WHERE type='table' AND sql NOT NULL ORDER BY name";
|
|
$table_names = $db->queryCol($query);
|
|
if (MDB2::isError($table_names)) {
|
|
return $table_names;
|
|
}
|
|
$result = array();
|
|
foreach ($table_names as $table_name) {
|
|
if (!$this->_fixSequenceName($table_name, true)) {
|
|
$result[] = $table_name;
|
|
}
|
|
}
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableFields()
|
|
|
|
/**
|
|
* list all fields in a table in the current database
|
|
*
|
|
* @param string $table name of table that should be used in method
|
|
* @return mixed array of field names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableFields($table)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$result = $db->loadModule('Reverse', null, true);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
$query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$query.= 'LOWER(name)='.$db->quote(strtolower($table), 'text');
|
|
} else {
|
|
$query.= 'name='.$db->quote($table, 'text');
|
|
}
|
|
$sql = $db->queryOne($query);
|
|
if (MDB2::isError($sql)) {
|
|
return $sql;
|
|
}
|
|
$columns = $db->reverse->_getTableColumns($sql);
|
|
$fields = array();
|
|
foreach ($columns as $column) {
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
if ($db->options['field_case'] == CASE_LOWER) {
|
|
$column['name'] = strtolower($column['name']);
|
|
} else {
|
|
$column['name'] = strtoupper($column['name']);
|
|
}
|
|
} else {
|
|
$column = array_change_key_case($column, $db->options['field_case']);
|
|
}
|
|
$fields[] = $column['name'];
|
|
}
|
|
return $fields;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableTriggers()
|
|
|
|
/**
|
|
* list all triggers in the database that reference a given table
|
|
*
|
|
* @param string table for which all referenced triggers should be found
|
|
* @return mixed array of trigger names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableTriggers($table = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = "SELECT name FROM sqlite_master WHERE type='trigger' AND sql NOT NULL";
|
|
if (null !== $table) {
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$query.= ' AND LOWER(tbl_name)='.$db->quote(strtolower($table), 'text');
|
|
} else {
|
|
$query.= ' AND tbl_name='.$db->quote($table, 'text');
|
|
}
|
|
}
|
|
$result = $db->queryCol($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ createIndex()
|
|
|
|
/**
|
|
* Get the stucture of a field into an array
|
|
*
|
|
* @param string $table name of the table on which the index is to be created
|
|
* @param string $name name of the index to be created
|
|
* @param array $definition associative array that defines properties of the index to be created.
|
|
* Currently, only one property named FIELDS is supported. This property
|
|
* is also an associative with the names of the index fields as array
|
|
* indexes. Each entry of this array is set to another type of associative
|
|
* array that specifies properties of the index that are specific to
|
|
* each field.
|
|
*
|
|
* Currently, only the sorting property is supported. It should be used
|
|
* to define the sorting direction of the index. It may be set to either
|
|
* ascending or descending.
|
|
*
|
|
* Not all DBMS support index sorting direction configuration. The DBMS
|
|
* drivers of those that do not support it ignore this property. Use the
|
|
* function support() to determine whether the DBMS driver can manage indexes.
|
|
|
|
* Example
|
|
* array(
|
|
* 'fields' => array(
|
|
* 'user_name' => array(
|
|
* 'sorting' => 'ascending'
|
|
* ),
|
|
* 'last_login' => array()
|
|
* )
|
|
* )
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function createIndex($table, $name, $definition)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$table = $db->quoteIdentifier($table, true);
|
|
$name = $db->quoteIdentifier($db->getIndexName($name), true);
|
|
$query = "CREATE INDEX $name ON $table";
|
|
$fields = array();
|
|
foreach ($definition['fields'] as $field_name => $field) {
|
|
$field_string = $db->quoteIdentifier($field_name, true);
|
|
if (!empty($field['sorting'])) {
|
|
switch ($field['sorting']) {
|
|
case 'ascending':
|
|
$field_string.= ' ASC';
|
|
break;
|
|
case 'descending':
|
|
$field_string.= ' DESC';
|
|
break;
|
|
}
|
|
}
|
|
$fields[] = $field_string;
|
|
}
|
|
$query .= ' ('.implode(', ', $fields) . ')';
|
|
$result = $db->exec($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$name = $db->getIndexName($name);
|
|
$result = $db->exec("DROP INDEX $name");
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableIndexes()
|
|
|
|
/**
|
|
* list all indexes in a table
|
|
*
|
|
* @param string $table name of table that should be used in method
|
|
* @return mixed array of index names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableIndexes($table)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$table = $db->quote($table, 'text');
|
|
$query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$query.= 'LOWER(tbl_name)='.strtolower($table);
|
|
} else {
|
|
$query.= "tbl_name=$table";
|
|
}
|
|
$query.= " AND sql NOT NULL ORDER BY name";
|
|
$indexes = $db->queryCol($query, 'text');
|
|
if (MDB2::isError($indexes)) {
|
|
return $indexes;
|
|
}
|
|
|
|
$result = array();
|
|
foreach ($indexes as $sql) {
|
|
if (preg_match("/^create index ([^ ]+) on /i", $sql, $tmp)) {
|
|
$index = $this->_fixIndexName($tmp[1]);
|
|
if (!empty($index)) {
|
|
$result[$index] = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_change_key_case($result, $db->options['field_case']);
|
|
}
|
|
return array_keys($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ createConstraint()
|
|
|
|
/**
|
|
* create a constraint on a table
|
|
*
|
|
* @param string $table name of the table on which the constraint is to be created
|
|
* @param string $name name of the constraint to be created
|
|
* @param array $definition associative array that defines properties of the constraint to be created.
|
|
* Currently, only one property named FIELDS is supported. This property
|
|
* is also an associative with the names of the constraint fields as array
|
|
* constraints. Each entry of this array is set to another type of associative
|
|
* array that specifies properties of the constraint that are specific to
|
|
* each field.
|
|
*
|
|
* Example
|
|
* array(
|
|
* 'fields' => array(
|
|
* 'user_name' => array(),
|
|
* 'last_login' => array()
|
|
* )
|
|
* )
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function createConstraint($table, $name, $definition)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if (!empty($definition['primary'])) {
|
|
return $db->manager->alterTable($table, array(), false, array('primary' => $definition['fields']));
|
|
}
|
|
|
|
if (!empty($definition['foreign'])) {
|
|
return $db->manager->alterTable($table, array(), false, array('foreign_keys' => array($name => $definition)));
|
|
}
|
|
|
|
$table = $db->quoteIdentifier($table, true);
|
|
$name = $db->getIndexName($name);
|
|
$query = "CREATE UNIQUE INDEX $name ON $table";
|
|
$fields = array();
|
|
foreach ($definition['fields'] as $field_name => $field) {
|
|
$field_string = $field_name;
|
|
if (!empty($field['sorting'])) {
|
|
switch ($field['sorting']) {
|
|
case 'ascending':
|
|
$field_string.= ' ASC';
|
|
break;
|
|
case 'descending':
|
|
$field_string.= ' DESC';
|
|
break;
|
|
}
|
|
}
|
|
$fields[] = $field_string;
|
|
}
|
|
$query .= ' ('.implode(', ', $fields) . ')';
|
|
$result = $db->exec($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ dropConstraint()
|
|
|
|
/**
|
|
* drop existing constraint
|
|
*
|
|
* @param string $table name of table that should be used in method
|
|
* @param string $name name of the constraint to be dropped
|
|
* @param string $primary hint if the constraint is primary
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function dropConstraint($table, $name, $primary = false)
|
|
{
|
|
if ($primary || $name == 'PRIMARY') {
|
|
return $this->alterTable($table, array(), false, array('primary' => null));
|
|
}
|
|
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
//is it a FK constraint? If so, also delete the associated triggers
|
|
$db->loadModule('Reverse', null, true);
|
|
$definition = $db->reverse->getTableConstraintDefinition($table, $name);
|
|
if (!MDB2::isError($definition) && !empty($definition['foreign'])) {
|
|
//first drop the FK enforcing triggers
|
|
$result = $this->_dropFKTriggers($table, $name, $definition['references']['table']);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
//then drop the constraint itself
|
|
return $this->alterTable($table, array(), false, array('foreign_keys' => array($name => null)));
|
|
}
|
|
|
|
$name = $db->getIndexName($name);
|
|
$result = $db->exec("DROP INDEX $name");
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _dropFKTriggers()
|
|
|
|
/**
|
|
* Drop the triggers created to enforce the FOREIGN KEY constraint on the table
|
|
*
|
|
* @param string $table table name
|
|
* @param string $fkname FOREIGN KEY constraint name
|
|
* @param string $referenced_table referenced table name
|
|
*
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access private
|
|
*/
|
|
function _dropFKTriggers($table, $fkname, $referenced_table)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$triggers = $this->listTableTriggers($table);
|
|
$triggers2 = $this->listTableTriggers($referenced_table);
|
|
if (!MDB2::isError($triggers2) && !MDB2::isError($triggers)) {
|
|
$triggers = array_merge($triggers, $triggers2);
|
|
$pattern = '/^'.$fkname.'(_pk)?_(insert|update|delete)_trg$/i';
|
|
foreach ($triggers as $trigger) {
|
|
if (preg_match($pattern, $trigger)) {
|
|
$result = $db->exec('DROP TRIGGER '.$trigger);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableConstraints()
|
|
|
|
/**
|
|
* list all constraints in a table
|
|
*
|
|
* @param string $table name of table that should be used in method
|
|
* @return mixed array of constraint names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableConstraints($table)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$table = $db->quote($table, 'text');
|
|
$query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$query.= 'LOWER(tbl_name)='.strtolower($table);
|
|
} else {
|
|
$query.= "tbl_name=$table";
|
|
}
|
|
$query.= " AND sql NOT NULL ORDER BY name";
|
|
$indexes = $db->queryCol($query, 'text');
|
|
if (MDB2::isError($indexes)) {
|
|
return $indexes;
|
|
}
|
|
|
|
$result = array();
|
|
foreach ($indexes as $sql) {
|
|
if (preg_match("/^create unique index ([^ ]+) on /i", $sql, $tmp)) {
|
|
$index = $this->_fixIndexName($tmp[1]);
|
|
if (!empty($index)) {
|
|
$result[$index] = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// also search in table definition for PRIMARY KEYs...
|
|
$query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$query.= 'LOWER(name)='.strtolower($table);
|
|
} else {
|
|
$query.= "name=$table";
|
|
}
|
|
$query.= " AND sql NOT NULL ORDER BY name";
|
|
$table_def = $db->queryOne($query, 'text');
|
|
if (MDB2::isError($table_def)) {
|
|
return $table_def;
|
|
}
|
|
if (preg_match("/\bPRIMARY\s+KEY\b/i", $table_def, $tmp)) {
|
|
$result['primary'] = true;
|
|
}
|
|
|
|
// ...and for FOREIGN KEYs
|
|
if (preg_match_all("/\bCONSTRAINT\b\s+([^\s]+)\s+\bFOREIGN\s+KEY/imsx", $table_def, $tmp)) {
|
|
foreach ($tmp[1] as $fk) {
|
|
$result[$fk] = true;
|
|
}
|
|
}
|
|
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_change_key_case($result, $db->options['field_case']);
|
|
}
|
|
return array_keys($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ createSequence()
|
|
|
|
/**
|
|
* create sequence
|
|
*
|
|
* @param string $seq_name name of the sequence to be created
|
|
* @param string $start start value of the sequence; default is 1
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function createSequence($seq_name, $start = 1)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
|
|
$seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
|
|
$query = "CREATE TABLE $sequence_name ($seqcol_name INTEGER PRIMARY KEY DEFAULT 0 NOT NULL)";
|
|
$res = $db->exec($query);
|
|
if (MDB2::isError($res)) {
|
|
return $res;
|
|
}
|
|
if ($start == 1) {
|
|
return MDB2_OK;
|
|
}
|
|
$res = $db->exec("INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')');
|
|
if (!MDB2::isError($res)) {
|
|
return MDB2_OK;
|
|
}
|
|
// Handle error
|
|
$result = $db->exec("DROP TABLE $sequence_name");
|
|
if (MDB2::isError($result)) {
|
|
return $db->raiseError($result, null, null,
|
|
'could not drop inconsistent sequence table', __FUNCTION__);
|
|
}
|
|
return $db->raiseError($res, null, null,
|
|
'could not create sequence table', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ dropSequence()
|
|
|
|
/**
|
|
* drop existing sequence
|
|
*
|
|
* @param string $seq_name name of the sequence to be dropped
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function dropSequence($seq_name)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
|
|
$result = $db->exec("DROP TABLE $sequence_name");
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listSequences()
|
|
|
|
/**
|
|
* list all sequences in the current database
|
|
*
|
|
* @return mixed array of sequence names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listSequences()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = "SELECT name FROM sqlite_master WHERE type='table' AND sql NOT NULL ORDER BY name";
|
|
$table_names = $db->queryCol($query);
|
|
if (MDB2::isError($table_names)) {
|
|
return $table_names;
|
|
}
|
|
$result = array();
|
|
foreach ($table_names as $table_name) {
|
|
if ($sqn = $this->_fixSequenceName($table_name, true)) {
|
|
$result[] = $sqn;
|
|
}
|
|
}
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
?>
|