forked from GNUsocial/gnu-social
1356 lines
49 KiB
PHP
1356 lines
49 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 |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Author: Lukas Smith <smith@pooteeweet.org> |
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// +----------------------------------------------------------------------+
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// $Id$
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require_once 'MDB2/Driver/Manager/Common.php';
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/**
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* MDB2 oci8 driver for the management modules
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Driver_Manager_oci8 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 $options array with charset, collation info
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createDatabase($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 $db;
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}
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$username = $db->options['database_name_prefix'].$name;
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$password = $db->dsn['password'] ? $db->dsn['password'] : $name;
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$tablespace = $db->options['default_tablespace']
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? ' DEFAULT TABLESPACE '.$db->options['default_tablespace'] : '';
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$query = 'CREATE USER '.$username.' IDENTIFIED BY '.$password.$tablespace;
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$result = $db->standaloneQuery($query, null, true);
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if (MDB2::isError($result)) {
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return $result;
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}
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$query = 'GRANT CREATE SESSION, CREATE TABLE, UNLIMITED TABLESPACE, CREATE SEQUENCE, CREATE TRIGGER TO '.$username;
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$result = $db->standaloneQuery($query, null, true);
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if (MDB2::isError($result)) {
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$query = 'DROP USER '.$username.' CASCADE';
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$result2 = $db->standaloneQuery($query, null, true);
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if (MDB2::isError($result2)) {
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return $db->raiseError($result2, null, null,
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'could not setup the database user', __FUNCTION__);
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}
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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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// {{{ alterDatabase()
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/**
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* alter an existing database
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*
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* IMPORTANT: the safe way to change the db charset is to do a full import/export!
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* If - and only if - the new character set is a strict superset of the current
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* character set, it is possible to use the ALTER DATABASE CHARACTER SET to
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* expedite the change in the database character set.
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*
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* @param string $name name of the database that is intended to be changed
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* @param array $options array with name, charset info
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function alterDatabase($name, $options = array())
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{
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//disabled
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//return parent::alterDatabase($name, $options);
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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if (!empty($options['name'])) {
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$query = 'ALTER DATABASE ' . $db->quoteIdentifier($name, true)
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.' RENAME GLOBAL_NAME TO ' . $db->quoteIdentifier($options['name'], true);
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$result = $db->standaloneQuery($query);
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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if (!empty($options['charset'])) {
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$queries = array();
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$queries[] = 'SHUTDOWN IMMEDIATE'; //or NORMAL
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$queries[] = 'STARTUP MOUNT';
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$queries[] = 'ALTER SYSTEM ENABLE RESTRICTED SESSION';
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$queries[] = 'ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0';
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$queries[] = 'ALTER DATABASE OPEN';
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$queries[] = 'ALTER DATABASE CHARACTER SET ' . $options['charset'];
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$queries[] = 'ALTER DATABASE NATIONAL CHARACTER SET ' . $options['charset'];
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$queries[] = 'SHUTDOWN IMMEDIATE'; //or NORMAL
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$queries[] = 'STARTUP';
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foreach ($queries as $query) {
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$result = $db->standaloneQuery($query);
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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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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 object $db database object that is extended by this class
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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 $db;
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}
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$username = $db->options['database_name_prefix'].$name;
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return $db->standaloneQuery('DROP USER '.$username.' CASCADE', null, true);
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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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* @param string $start start value for the sequence
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access private
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*/
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function _makeAutoincrement($name, $table, $start = 1)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$table_uppercase = strtoupper($table);
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$index_name = $table_uppercase . '_AI_PK';
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$definition = array(
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'primary' => true,
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'fields' => array($name => true),
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);
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$idxname_format = $db->getOption('idxname_format');
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$db->setOption('idxname_format', '%s');
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$result = $this->createConstraint($table, $index_name, $definition);
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$db->setOption('idxname_format', $idxname_format);
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if (MDB2::isError($result)) {
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return $db->raiseError($result, null, null,
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'primary key for autoincrement PK could not be created', __FUNCTION__);
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}
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if (null === $start) {
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$db->beginTransaction();
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$query = 'SELECT MAX(' . $db->quoteIdentifier($name, true) . ') FROM ' . $db->quoteIdentifier($table, true);
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$start = $this->db->queryOne($query, 'integer');
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if (MDB2::isError($start)) {
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return $start;
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}
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++$start;
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$result = $this->createSequence($table, $start);
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$db->commit();
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} else {
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$result = $this->createSequence($table, $start);
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}
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if (MDB2::isError($result)) {
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return $db->raiseError($result, null, null,
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'sequence for autoincrement PK could not be created', __FUNCTION__);
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}
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$seq_name = $db->getSequenceName($table);
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$trigger_name = $db->quoteIdentifier($table_uppercase . '_AI_PK', true);
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$seq_name_quoted = $db->quoteIdentifier($seq_name, true);
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$table = $db->quoteIdentifier($table, true);
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$name = $db->quoteIdentifier($name, true);
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$trigger_sql = '
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CREATE TRIGGER '.$trigger_name.'
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BEFORE INSERT
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ON '.$table.'
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FOR EACH ROW
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DECLARE
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last_Sequence NUMBER;
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last_InsertID NUMBER;
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BEGIN
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SELECT '.$seq_name_quoted.'.NEXTVAL INTO :NEW.'.$name.' FROM DUAL;
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IF (:NEW.'.$name.' IS NULL OR :NEW.'.$name.' = 0) THEN
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SELECT '.$seq_name_quoted.'.NEXTVAL INTO :NEW.'.$name.' FROM DUAL;
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ELSE
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SELECT NVL(Last_Number, 0) INTO last_Sequence
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FROM User_Sequences
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WHERE UPPER(Sequence_Name) = UPPER(\''.$seq_name.'\');
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SELECT :NEW.'.$name.' INTO last_InsertID FROM DUAL;
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WHILE (last_InsertID > last_Sequence) LOOP
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SELECT '.$seq_name_quoted.'.NEXTVAL INTO last_Sequence FROM DUAL;
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END LOOP;
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END IF;
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END;
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';
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$result = $db->exec($trigger_sql);
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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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// {{{ _dropAutoincrement()
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/**
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* drop an existing autoincrement sequence + trigger
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*
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* @param string $table name of the table
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access private
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*/
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function _dropAutoincrement($table)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$table = strtoupper($table);
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$trigger_name = $table . '_AI_PK';
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$trigger_name_quoted = $db->quote($trigger_name, 'text');
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$query = 'SELECT trigger_name FROM user_triggers';
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$query.= ' WHERE trigger_name='.$trigger_name_quoted.' OR trigger_name='.strtoupper($trigger_name_quoted);
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$trigger = $db->queryOne($query);
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if (MDB2::isError($trigger)) {
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return $trigger;
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}
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if ($trigger) {
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$trigger_name = $db->quoteIdentifier($table . '_AI_PK', true);
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$trigger_sql = 'DROP TRIGGER ' . $trigger_name;
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$result = $db->exec($trigger_sql);
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if (MDB2::isError($result)) {
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return $db->raiseError($result, null, null,
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'trigger for autoincrement PK could not be dropped', __FUNCTION__);
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}
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$result = $this->dropSequence($table);
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if (MDB2::isError($result)) {
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return $db->raiseError($result, null, null,
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'sequence for autoincrement PK could not be dropped', __FUNCTION__);
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}
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$index_name = $table . '_AI_PK';
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$idxname_format = $db->getOption('idxname_format');
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$db->setOption('idxname_format', '%s');
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$result1 = $this->dropConstraint($table, $index_name);
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$db->setOption('idxname_format', $idxname_format);
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$result2 = $this->dropConstraint($table, $index_name);
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if (MDB2::isError($result1) && MDB2::isError($result2)) {
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return $db->raiseError($result1, null, null,
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'primary key for autoincrement PK could not be dropped', __FUNCTION__);
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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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// {{{ _getTemporaryTableQuery()
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/**
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* A method to return the required SQL string that fits between CREATE ... TABLE
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* to create the table as a temporary table.
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*
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* @return string The string required to be placed between "CREATE" and "TABLE"
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* to generate a temporary table, if possible.
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*/
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function _getTemporaryTableQuery()
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{
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return 'GLOBAL TEMPORARY';
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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['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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// {{{ createTable()
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/**
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* create a new table
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*
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* @param string $name Name of the database that should be created
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* @param array $fields Associative array that contains the definition of each field of the new table
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* The indexes of the array entries are the names of the fields of the table an
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* the array entry values are associative arrays like those that are meant to be
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* passed with the field definitions to get[Type]Declaration() functions.
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*
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* Example
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* array(
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*
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* 'id' => array(
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* 'type' => 'integer',
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* 'unsigned' => 1
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* 'notnull' => 1
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* 'default' => 0
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* ),
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* 'name' => array(
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* 'type' => 'text',
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* 'length' => 12
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* ),
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* 'password' => array(
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* 'type' => 'text',
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* 'length' => 12
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* )
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* );
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* @param array $options An associative array of table options:
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* array(
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* 'comment' => 'Foo',
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* 'temporary' => true|false,
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* );
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createTable($name, $fields, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$db->beginNestedTransaction();
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$result = parent::createTable($name, $fields, $options);
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if (!MDB2::isError($result)) {
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foreach ($fields as $field_name => $field) {
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if (!empty($field['autoincrement'])) {
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$result = $this->_makeAutoincrement($field_name, $name);
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}
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}
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}
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$db->completeNestedTransaction();
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return $result;
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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 $db;
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}
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$db->beginNestedTransaction();
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$result = $this->_dropAutoincrement($name);
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if (!MDB2::isError($result)) {
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$result = parent::dropTable($name);
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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$db->completeNestedTransaction();
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return $result;
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}
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// }}}
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// {{{ truncateTable()
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/**
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* Truncate an existing table (if the TRUNCATE TABLE syntax is not supported,
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* it falls back to a DELETE FROM TABLE query)
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*
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* @param string $name name of the table that should be truncated
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function truncateTable($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 $db;
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}
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$name = $db->quoteIdentifier($name, true);
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$result = $db->exec("TRUNCATE 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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// not needed in Oracle
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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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|
*
|
|
* @param string $name name of the table that is intended to be changed.
|
|
* @param array $changes associative array that contains the details of each type
|
|
* of change that is intended to be performed. The types of
|
|
* changes that are currently supported are defined as follows:
|
|
*
|
|
* name
|
|
*
|
|
* New name for the table.
|
|
*
|
|
* add
|
|
*
|
|
* Associative array with the names of fields to be added as
|
|
* indexes of the array. The value of each entry of the array
|
|
* should be set to another associative array with the properties
|
|
* of the fields to be added. The properties of the fields should
|
|
* be the same as defined by the MDB2 parser.
|
|
*
|
|
*
|
|
* remove
|
|
*
|
|
* Associative array with the names of fields to be removed as indexes
|
|
* of the array. Currently the values assigned to each entry are ignored.
|
|
* An empty array should be used for future compatibility.
|
|
*
|
|
* rename
|
|
*
|
|
* Associative array with the names of fields to be renamed as indexes
|
|
* of the array. The value of each entry of the array should be set to
|
|
* another associative array with the entry named name with the new
|
|
* field name and the entry named Declaration that is expected to contain
|
|
* the portion of the field declaration already in DBMS specific SQL code
|
|
* as it is used in the CREATE TABLE statement.
|
|
*
|
|
* change
|
|
*
|
|
* Associative array with the names of the fields to be changed as indexes
|
|
* of the array. Keep in mind that if it is intended to change either the
|
|
* name of a field and any other properties, the change array entries
|
|
* should have the new names of the fields as array indexes.
|
|
*
|
|
* The value of each entry of the array should be set to another associative
|
|
* array with the properties of the fields to that are meant to be changed as
|
|
* array entries. These entries should be assigned to the new values of the
|
|
* respective properties. The properties of the fields should be the same
|
|
* as defined by the MDB2 parser.
|
|
*
|
|
* Example
|
|
* array(
|
|
* 'name' => 'userlist',
|
|
* 'add' => array(
|
|
* 'quota' => array(
|
|
* 'type' => 'integer',
|
|
* 'unsigned' => 1
|
|
* )
|
|
* ),
|
|
* 'remove' => array(
|
|
* 'file_limit' => array(),
|
|
* 'time_limit' => array()
|
|
* ),
|
|
* 'change' => array(
|
|
* 'name' => array(
|
|
* 'length' => '20',
|
|
* 'definition' => array(
|
|
* 'type' => 'text',
|
|
* 'length' => 20,
|
|
* ),
|
|
* )
|
|
* ),
|
|
* 'rename' => array(
|
|
* 'sex' => array(
|
|
* 'name' => 'gender',
|
|
* 'definition' => array(
|
|
* 'type' => 'text',
|
|
* 'length' => 1,
|
|
* 'default' => 'M',
|
|
* ),
|
|
* )
|
|
* )
|
|
* )
|
|
*
|
|
* @param boolean $check indicates whether the function should just check if the DBMS driver
|
|
* can perform the requested table alterations if the value is true or
|
|
* actually perform them otherwise.
|
|
* @access public
|
|
*
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
*/
|
|
function alterTable($name, $changes, $check)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($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;
|
|
}
|
|
|
|
$name = $db->quoteIdentifier($name, true);
|
|
|
|
if (!empty($changes['add']) && is_array($changes['add'])) {
|
|
$fields = array();
|
|
foreach ($changes['add'] as $field_name => $field) {
|
|
$fields[] = $db->getDeclaration($field['type'], $field_name, $field);
|
|
}
|
|
$result = $db->exec("ALTER TABLE $name ADD (". implode(', ', $fields).')');
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
if (!empty($changes['change']) && is_array($changes['change'])) {
|
|
$fields = array();
|
|
foreach ($changes['change'] as $field_name => $field) {
|
|
//fix error "column to be modified to NOT NULL is already NOT NULL"
|
|
if (!array_key_exists('notnull', $field)) {
|
|
unset($field['definition']['notnull']);
|
|
}
|
|
$fields[] = $db->getDeclaration($field['definition']['type'], $field_name, $field['definition']);
|
|
}
|
|
$result = $db->exec("ALTER TABLE $name MODIFY (". implode(', ', $fields).')');
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
if (!empty($changes['rename']) && is_array($changes['rename'])) {
|
|
foreach ($changes['rename'] as $field_name => $field) {
|
|
$field_name = $db->quoteIdentifier($field_name, true);
|
|
$query = "ALTER TABLE $name RENAME COLUMN $field_name TO ".$db->quoteIdentifier($field['name']);
|
|
$result = $db->exec($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!empty($changes['remove']) && is_array($changes['remove'])) {
|
|
$fields = array();
|
|
foreach ($changes['remove'] as $field_name => $field) {
|
|
$fields[] = $db->quoteIdentifier($field_name, true);
|
|
}
|
|
$result = $db->exec("ALTER TABLE $name DROP COLUMN ". implode(', ', $fields));
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
if (!empty($changes['name'])) {
|
|
$change_name = $db->quoteIdentifier($changes['name'], true);
|
|
$result = $db->exec("ALTER TABLE $name RENAME TO ".$change_name);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _fetchCol()
|
|
|
|
/**
|
|
* Utility method to fetch and format a column from a resultset
|
|
*
|
|
* @param resource $result
|
|
* @param boolean $fixname (used when listing indices or constraints)
|
|
* @return mixed array of names on success, a MDB2 error on failure
|
|
* @access private
|
|
*/
|
|
function _fetchCol($result, $fixname = false)
|
|
{
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
$col = $result->fetchCol();
|
|
if (MDB2::isError($col)) {
|
|
return $col;
|
|
}
|
|
$result->free();
|
|
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if ($fixname) {
|
|
foreach ($col as $k => $v) {
|
|
$col[$k] = $this->_fixIndexName($v);
|
|
}
|
|
}
|
|
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
|
|
&& $db->options['field_case'] == CASE_LOWER
|
|
) {
|
|
$col = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $col);
|
|
}
|
|
return $col;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 $db;
|
|
}
|
|
|
|
if (!$db->options['emulate_database']) {
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'database listing is only supported if the "emulate_database" option is enabled', __FUNCTION__);
|
|
}
|
|
|
|
if ($db->options['database_name_prefix']) {
|
|
$query = 'SELECT SUBSTR(username, ';
|
|
$query.= (strlen($db->options['database_name_prefix'])+1);
|
|
$query.= ") FROM sys.dba_users WHERE username LIKE '";
|
|
$query.= $db->options['database_name_prefix']."%'";
|
|
} else {
|
|
$query = 'SELECT username FROM sys.dba_users';
|
|
}
|
|
$result = $db->standaloneQuery($query, array('text'), false);
|
|
return $this->_fetchCol($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listUsers()
|
|
|
|
/**
|
|
* list all users
|
|
*
|
|
* @return mixed array of user names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listUsers()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if ($db->options['emulate_database'] && $db->options['database_name_prefix']) {
|
|
$query = 'SELECT SUBSTR(username, ';
|
|
$query.= (strlen($db->options['database_name_prefix'])+1);
|
|
$query.= ") FROM sys.dba_users WHERE username NOT LIKE '";
|
|
$query.= $db->options['database_name_prefix']."%'";
|
|
} else {
|
|
$query = 'SELECT username FROM sys.dba_users';
|
|
}
|
|
return $db->queryCol($query);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listViews()
|
|
|
|
/**
|
|
* list all views in the current database
|
|
*
|
|
* @param string owner, the current is default
|
|
* @return mixed array of view names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listViews($owner = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if (empty($owner)) {
|
|
$owner = $db->dsn['username'];
|
|
}
|
|
|
|
$query = 'SELECT view_name
|
|
FROM sys.all_views
|
|
WHERE owner=? OR owner=?';
|
|
$stmt = $db->prepare($query);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
$result = $stmt->execute(array($owner, strtoupper($owner)));
|
|
return $this->_fetchCol($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listFunctions()
|
|
|
|
/**
|
|
* list all functions in the current database
|
|
*
|
|
* @param string owner, the current is default
|
|
* @return mixed array of function names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listFunctions($owner = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if (empty($owner)) {
|
|
$owner = $db->dsn['username'];
|
|
}
|
|
|
|
$query = "SELECT name
|
|
FROM sys.all_source
|
|
WHERE line = 1
|
|
AND type = 'FUNCTION'
|
|
AND (owner=? OR owner=?)";
|
|
$stmt = $db->prepare($query);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
$result = $stmt->execute(array($owner, strtoupper($owner)));
|
|
return $this->_fetchCol($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableTriggers()
|
|
|
|
/**
|
|
* list all triggers in the database that reference a given table
|
|
*
|
|
* @param string table for which all referenced triggers should be found
|
|
* @return mixed array of trigger names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableTriggers($table = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if (empty($owner)) {
|
|
$owner = $db->dsn['username'];
|
|
}
|
|
|
|
$query = "SELECT trigger_name
|
|
FROM sys.all_triggers
|
|
WHERE (table_name=? OR table_name=?)
|
|
AND (owner=? OR owner=?)";
|
|
$stmt = $db->prepare($query);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
$args = array(
|
|
$table,
|
|
strtoupper($table),
|
|
$owner,
|
|
strtoupper($owner),
|
|
);
|
|
$result = $stmt->execute($args);
|
|
return $this->_fetchCol($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTables()
|
|
|
|
/**
|
|
* list all tables in the database
|
|
*
|
|
* @param string owner, the current is default
|
|
* @return mixed array of table names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTables($owner = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if (empty($owner)) {
|
|
$owner = $db->dsn['username'];
|
|
}
|
|
|
|
$query = 'SELECT table_name
|
|
FROM sys.all_tables
|
|
WHERE owner=? OR owner=?';
|
|
$stmt = $db->prepare($query);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
$result = $stmt->execute(array($owner, strtoupper($owner)));
|
|
return $this->_fetchCol($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 $db;
|
|
}
|
|
|
|
list($owner, $table) = $this->splitTableSchema($table);
|
|
if (empty($owner)) {
|
|
$owner = $db->dsn['username'];
|
|
}
|
|
|
|
$query = 'SELECT column_name
|
|
FROM all_tab_columns
|
|
WHERE (table_name=? OR table_name=?)
|
|
AND (owner=? OR owner=?)
|
|
ORDER BY column_id';
|
|
$stmt = $db->prepare($query);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
$args = array(
|
|
$table,
|
|
strtoupper($table),
|
|
$owner,
|
|
strtoupper($owner),
|
|
);
|
|
$result = $stmt->execute($args);
|
|
return $this->_fetchCol($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableIndexes()
|
|
|
|
/**
|
|
* list all indexes in a table
|
|
*
|
|
* @param string $table name of table that should be used in method
|
|
* @return mixed array of index names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableIndexes($table)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
list($owner, $table) = $this->splitTableSchema($table);
|
|
if (empty($owner)) {
|
|
$owner = $db->dsn['username'];
|
|
}
|
|
|
|
$query = 'SELECT i.index_name name
|
|
FROM all_indexes i
|
|
LEFT JOIN all_constraints c
|
|
ON c.index_name = i.index_name
|
|
AND c.owner = i.owner
|
|
AND c.table_name = i.table_name
|
|
WHERE (i.table_name=? OR i.table_name=?)
|
|
AND (i.owner=? OR i.owner=?)
|
|
AND c.index_name IS NULL
|
|
AND i.generated=' .$db->quote('N', 'text');
|
|
$stmt = $db->prepare($query);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
$args = array(
|
|
$table,
|
|
strtoupper($table),
|
|
$owner,
|
|
strtoupper($owner),
|
|
);
|
|
$result = $stmt->execute($args);
|
|
return $this->_fetchCol($result, true);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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)
|
|
{
|
|
$result = parent::createConstraint($table, $name, $definition);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
if (!empty($definition['foreign'])) {
|
|
return $this->_createFKTriggers($table, array($name => $definition));
|
|
}
|
|
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)
|
|
{
|
|
$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 $result;
|
|
}
|
|
}
|
|
|
|
return parent::dropConstraint($table, $name, $primary);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _createFKTriggers()
|
|
|
|
/**
|
|
* Create triggers to enforce the FOREIGN KEY constraint on the table
|
|
*
|
|
* @param string $table table name
|
|
* @param array $foreign_keys FOREIGN KEY definitions
|
|
*
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access private
|
|
*/
|
|
function _createFKTriggers($table, $foreign_keys)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
// create triggers to enforce FOREIGN KEY constraints
|
|
if ($db->supports('triggers') && !empty($foreign_keys)) {
|
|
$table = $db->quoteIdentifier($table, true);
|
|
foreach ($foreign_keys as $fkname => $fkdef) {
|
|
if (empty($fkdef)) {
|
|
continue;
|
|
}
|
|
$fkdef['onupdate'] = empty($fkdef['onupdate']) ? $db->options['default_fk_action_onupdate'] : strtoupper($fkdef['onupdate']);
|
|
if ('RESTRICT' == $fkdef['onupdate'] || 'NO ACTION' == $fkdef['onupdate']) {
|
|
// already handled by default
|
|
continue;
|
|
}
|
|
|
|
$trigger_name = substr(strtolower($fkname.'_pk_upd_trg'), 0, $db->options['max_identifiers_length']);
|
|
$table_fields = array_keys($fkdef['fields']);
|
|
$referenced_fields = array_keys($fkdef['references']['fields']);
|
|
|
|
//create the ON UPDATE trigger on the primary table
|
|
$restrict_action = ' IF (SELECT ';
|
|
$aliased_fields = array();
|
|
foreach ($table_fields as $field) {
|
|
$aliased_fields[] = $table .'.'.$field .' AS '.$field;
|
|
}
|
|
$restrict_action .= implode(',', $aliased_fields)
|
|
.' FROM '.$table
|
|
.' WHERE ';
|
|
$conditions = array();
|
|
$new_values = array();
|
|
$null_values = array();
|
|
for ($i=0; $i<count($table_fields); $i++) {
|
|
$conditions[] = $table_fields[$i] .' = :OLD.'.$referenced_fields[$i];
|
|
$new_values[] = $table_fields[$i] .' = :NEW.'.$referenced_fields[$i];
|
|
$null_values[] = $table_fields[$i] .' = NULL';
|
|
}
|
|
|
|
$cascade_action = 'UPDATE '.$table.' SET '.implode(', ', $new_values) .' WHERE '.implode(' AND ', $conditions). ';';
|
|
$setnull_action = 'UPDATE '.$table.' SET '.implode(', ', $null_values).' WHERE '.implode(' AND ', $conditions). ';';
|
|
|
|
if ('SET DEFAULT' == $fkdef['onupdate'] || 'SET DEFAULT' == $fkdef['ondelete']) {
|
|
$db->loadModule('Reverse', null, true);
|
|
$default_values = array();
|
|
foreach ($table_fields as $table_field) {
|
|
$field_definition = $db->reverse->getTableFieldDefinition($table, $field);
|
|
if (MDB2::isError($field_definition)) {
|
|
return $field_definition;
|
|
}
|
|
$default_values[] = $table_field .' = '. $field_definition[0]['default'];
|
|
}
|
|
$setdefault_action = 'UPDATE '.$table.' SET '.implode(', ', $default_values).' WHERE '.implode(' AND ', $conditions). ';';
|
|
}
|
|
|
|
$query = 'CREATE TRIGGER %s'
|
|
.' %s ON '.$fkdef['references']['table']
|
|
.' FOR EACH ROW '
|
|
.' BEGIN ';
|
|
|
|
if ('CASCADE' == $fkdef['onupdate']) {
|
|
$sql_update = sprintf($query, $trigger_name, 'BEFORE UPDATE', 'update') . $cascade_action;
|
|
} elseif ('SET NULL' == $fkdef['onupdate']) {
|
|
$sql_update = sprintf($query, $trigger_name, 'BEFORE UPDATE', 'update') . $setnull_action;
|
|
} elseif ('SET DEFAULT' == $fkdef['onupdate']) {
|
|
$sql_update = sprintf($query, $trigger_name, 'BEFORE UPDATE', 'update') . $setdefault_action;
|
|
}
|
|
$sql_update .= ' END;';
|
|
$result = $db->exec($sql_update);
|
|
if (MDB2::isError($result)) {
|
|
if ($result->getCode() === MDB2_ERROR_ALREADY_EXISTS) {
|
|
return MDB2_OK;
|
|
}
|
|
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);
|
|
$trigger_name = substr(strtolower($fkname.'_pk_upd_trg'), 0, $db->options['max_identifiers_length']);
|
|
$pattern = '/^'.$trigger_name.'$/i';
|
|
foreach ($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 $db;
|
|
}
|
|
|
|
list($owner, $table) = $this->splitTableSchema($table);
|
|
if (empty($owner)) {
|
|
$owner = $db->dsn['username'];
|
|
}
|
|
|
|
$query = 'SELECT constraint_name
|
|
FROM all_constraints
|
|
WHERE (table_name=? OR table_name=?)
|
|
AND (owner=? OR owner=?)';
|
|
$stmt = $db->prepare($query);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
$args = array(
|
|
$table,
|
|
strtoupper($table),
|
|
$owner,
|
|
strtoupper($owner),
|
|
);
|
|
$result = $stmt->execute($args);
|
|
return $this->_fetchCol($result, true);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ createSequence()
|
|
|
|
/**
|
|
* create sequence
|
|
*
|
|
* @param object $db database object that is extended by this class
|
|
* @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);
|
|
$query = "CREATE SEQUENCE $sequence_name START WITH $start INCREMENT BY 1 NOCACHE";
|
|
$query.= ($start < 1 ? " MINVALUE $start" : '');
|
|
$result = $db->exec($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ dropSequence()
|
|
|
|
/**
|
|
* drop existing sequence
|
|
*
|
|
* @param object $db database object that is extended by this class
|
|
* @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 SEQUENCE $sequence_name");
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listSequences()
|
|
|
|
/**
|
|
* list all sequences in the current database
|
|
*
|
|
* @param string owner, the current is default
|
|
* @return mixed array of sequence names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listSequences($owner = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if (empty($owner)) {
|
|
$owner = $db->dsn['username'];
|
|
}
|
|
|
|
$query = 'SELECT sequence_name
|
|
FROM sys.all_sequences
|
|
WHERE (sequence_owner=? OR sequence_owner=?)';
|
|
$stmt = $db->prepare($query);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
$result = $stmt->execute(array($owner, strtoupper($owner)));
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
$col = $result->fetchCol();
|
|
if (MDB2::isError($col)) {
|
|
return $col;
|
|
}
|
|
$result->free();
|
|
|
|
foreach ($col as $k => $v) {
|
|
$col[$k] = $this->_fixSequenceName($v);
|
|
}
|
|
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
|
|
&& $db->options['field_case'] == CASE_LOWER
|
|
) {
|
|
$col = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $col);
|
|
}
|
|
return $col;
|
|
}
|
|
}
|
|
?>
|