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684 lines
26 KiB
PHP
684 lines
26 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) 1998-2004 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: Lorenzo Alberton <l.alberton@quipo.it> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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require_once 'MDB2/Driver/Manager/Common.php';
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/**
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* MDB2 FireBird/InterBase 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 Lorenzo Alberton <l.alberton@quipo.it>
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*/
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class MDB2_Driver_Manager_ibase 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 $name name of the database that should be created
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createDatabase($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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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'Create database',
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'createDatabase: PHP Interbase API does not support direct queries. You have to '.
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'create the db manually by using isql command or a similar program');
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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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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'Drop database',
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'dropDatabase: PHP Interbase API does not support direct queries. You have '.
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'to drop the db manually by using isql command or a similar program');
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}
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// }}}
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// {{{ _makeAutoincrement()
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/**
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* add an autoincrement sequence + trigger
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*
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* @param string $name name of the PK field
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* @param string $table name of the table
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access private
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*/
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function _makeAutoincrement($name, $table, $start = 1)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$result = $db->manager->createSequence($table, $start);
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if (PEAR::isError($result)) {
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return $db->raiseError(MDB2_ERROR, null, null,
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'_makeAutoincrement: sequence for autoincrement PK could not be created');
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}
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$sequence_name = $db->getSequenceName($table);
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$trigger_name = $table . '_autoincrement_pk';
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$trigger_sql = 'CREATE TRIGGER ' . $trigger_name . ' FOR ' . $table . '
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ACTIVE BEFORE INSERT POSITION 0
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AS
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BEGIN
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IF (NEW.' . $name . ' IS NULL) THEN
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NEW.' . $name . ' = GEN_ID('.strtoupper($sequence_name).', 1);
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END';
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return $db->query($trigger_sql);
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}
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// }}}
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// {{{ _dropAutoincrement()
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/**
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* drop an existing autoincrement PK / trigger
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*
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* @param string $name name of the PK field
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* @param string $table name of the table
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access private
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*/
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function _dropAutoincrement($name, $table)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$result = $db->manager->dropSequence($table);
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if (PEAR::isError($result)) {
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return $db->raiseError(MDB2_ERROR, null, null,
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'_dropAutoincrement: sequence for autoincrement PK could not be dropped');
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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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* 'description' => 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, $fields)
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{
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$result = parent::createTable($name, $fields);
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if (PEAR::isError($result)) {
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return $result;
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}
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foreach($fields as $field_name => $field) {
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if (array_key_exists('autoincrement', $field) && $field['autoincrement']) {
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return $this->_makeAutoincrement($field_name, $name);
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}
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}
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}
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// }}}
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// {{{ checkSupportedChanges()
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/**
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* check if planned changes are supported
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*
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* @param string $name name of the database that should be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function checkSupportedChanges(&$changes)
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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 'notnull':
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return $db->raiseError(MDB2_ERROR, null, null,
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'checkSupportedChanges: it is not supported changes to field not null constraint');
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case 'default':
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return $db->raiseError(MDB2_ERROR, null, null,
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'checkSupportedChanges: it is not supported changes to field default value');
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case 'length':
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return $db->raiseError(MDB2_ERROR, null, null,
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'checkSupportedChanges: it is not supported changes to field default length');
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case 'unsigned':
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case 'type':
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case 'declaration':
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case 'definition':
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break;
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default:
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return $db->raiseError(MDB2_ERROR, null, null,
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'checkSupportedChanges: it is not supported change of type' . $change_name);
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}
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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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//remove triggers associated with the table
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$name = strtoupper($name);
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$triggers = $db->queryCol("SELECT RDB\$TRIGGER_NAME FROM RDB\$TRIGGERS WHERE RDB\$RELATION_NAME='$name'");
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if (PEAR::isError($triggers)) {
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return $triggers;
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}
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foreach ($triggers as $trigger) {
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$result = $db->query('DROP TRIGGER ' . $trigger);
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if (PEAR::isError($result)) {
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return $result;
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}
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}
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return parent::dropTable($name);
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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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* @param boolean $check indicates whether the function should just check if the DBMS driver
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* can perform the requested table alterations if the value is true or
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* actually perform them otherwise.
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function alterTable($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 'rename':
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break;
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case 'change':
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foreach ($changes['change'] as $field) {
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if (PEAR::isError($err = $this->checkSupportedChanges($field))) {
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return $err;
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}
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}
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break;
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default:
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return $db->raiseError(MDB2_ERROR, 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 = '';
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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, $name);
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if (PEAR::isError($type_declaration)) {
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return $err;
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}
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if (strlen($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 => $field) {
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if (strlen($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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if (array_key_exists('rename', $changes)) {
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foreach ($changes['rename'] as $field_name => $field) {
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if (strlen($query)) {
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$query.= ', ';
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}
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$query.= 'ALTER ' . $field_name . ' TO ' . $field['name'];
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}
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}
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if (array_key_exists('change', $changes)) {
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// missing support to change DEFAULT and NULLability
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foreach ($changes['change'] as $field_name => $field) {
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if (PEAR::isError($err = $this->checkSupportedChanges($field))) {
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return $err;
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}
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if (strlen($query)) {
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$query.= ', ';
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}
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$db->loadModule('Datatype');
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$query.= 'ALTER ' . $field_name.' TYPE ' . $db->datatype->getTypeDeclaration($field);
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}
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}
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if (!strlen($query)) {
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return MDB2_OK;
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}
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return $db->query("ALTER TABLE $name $query");
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}
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// }}}
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// {{{ listTables()
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/**
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* list all tables in the current database
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*
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function listTables()
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$query = 'SELECT DISTINCT R.RDB$RELATION_NAME FROM RDB$RELATION_FIELDS R WHERE R.RDB$SYSTEM_FLAG=0';
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$tables = $db->queryCol($query);
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if (PEAR::isError($tables)) {
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return $tables;
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$tables = array_flip(array_change_key_case(array_flip($tables), $db->options['field_case']));
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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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*
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* @param string $table name of table that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function listTableFields($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 $db;
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}
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$table = strtoupper($table);
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$query = "SELECT RDB\$FIELD_NAME FROM RDB\$RELATION_FIELDS WHERE RDB\$RELATION_NAME='$table'";
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$columns = $db->queryCol($query);
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if (PEAR::isError($columns)) {
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return $columns;
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$columns = array_flip(array_change_key_case(array_flip($columns), $db->options['field_case']));
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}
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return $columns;
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}
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// }}}
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// {{{ listViews()
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/**
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* list the views in the database
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function listViews()
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{
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$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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return $db->queryCol('SELECT RDB$VIEW_NAME');
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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
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*
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* @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
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* @param array $definition associative array that defines properties of the index to be created.
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* Currently, only one property named FIELDS is supported. This property
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* is also an associative with the names of the index fields as array
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* indexes. Each entry of this array is set to another type of associative
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* array that specifies properties of the index that are specific to
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* each field.
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*
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* Currently, only the sorting property is supported. It should be used
|
|
* to define the sorting direction of the index. It may be set to either
|
|
* ascending or descending.
|
|
*
|
|
* Not all DBMS support index sorting direction configuration. The DBMS
|
|
* drivers of those that do not support it ignore this property. Use the
|
|
* function support() to determine whether the DBMS driver can manage indexes.
|
|
|
|
* Example
|
|
* array(
|
|
* 'fields' => array(
|
|
* 'user_name' => array(
|
|
* 'sorting' => 'ascending'
|
|
* ),
|
|
* 'last_login' => array()
|
|
* )
|
|
* )
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function createIndex($table, $name, $definition)
|
|
{
|
|
$db =& $this->getDBInstance();
|
|
if (PEAR::isError($db)) {
|
|
return $db;
|
|
}
|
|
if (array_key_exists('primary', $definition) && $definition['primary']) {
|
|
$query = "ALTER TABLE $table ADD CONSTRAINT $name PRIMARY KEY (";
|
|
} else {
|
|
$query = 'CREATE';
|
|
if (array_key_exists('unique', $definition) && $definition['unique']) {
|
|
$query.= ' UNIQUE';
|
|
}
|
|
$query_sort = '';
|
|
foreach ($definition['fields'] as $field) {
|
|
if (!strcmp($query_sort, '') && isset($field['sorting'])) {
|
|
switch ($field['sorting']) {
|
|
case 'ascending':
|
|
$query_sort = ' ASC';
|
|
break;
|
|
case 'descending':
|
|
$query_sort = ' DESC';
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
$query .= $query_sort. " INDEX $name ON $table (";
|
|
}
|
|
$query .= implode(', ', array_keys($definition['fields'])) . ')';
|
|
|
|
return $db->query($query);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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;
|
|
}
|
|
return $db->queryCol("SELECT RDB\$INDEX_NAME FROM RDB\$INDICES WHERE RDB\$RELATION_NAME='$table'");
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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);
|
|
if (PEAR::isError($result = $db->query('CREATE GENERATOR '.strtoupper($sequence_name)))) {
|
|
return $result;
|
|
}
|
|
if (PEAR::isError($result = $db->query('SET GENERATOR '.strtoupper($sequence_name).' TO '.($start-1)))) {
|
|
if (PEAR::isError($err = $db->dropSequence($seq_name))) {
|
|
return $db->raiseError(MDB2_ERROR, null, null,
|
|
'createSequence: Could not setup sequence start value and then it was not possible to drop it: '.
|
|
$err->getMessage().' - ' .$err->getUserInfo());
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 $db->query('DELETE FROM RDB$GENERATORS WHERE RDB$GENERATOR_NAME=\''.strtoupper($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;
|
|
}
|
|
|
|
$query = 'SELECT RDB$GENERATOR_NAME FROM RDB$GENERATORS';
|
|
$table_names = $db->queryCol($query);
|
|
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;
|
|
}
|
|
}
|
|
?>
|