forked from GNUsocial/gnu-social
979 lines
35 KiB
PHP
979 lines
35 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: Paul Cooper <pgc@ucecom.com> |
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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 MySQL 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 Paul Cooper <pgc@ucecom.com>
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*/
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class MDB2_Driver_Manager_pgsql extends MDB2_Driver_Manager_Common
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{
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// {{{ createDatabase()
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/**
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* create a new database
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*
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* @param string $name name of the database that should be created
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* @param array $options array with charset info
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createDatabase($name, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$name = $db->quoteIdentifier($name, true);
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$query = 'CREATE DATABASE ' . $name;
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if (!empty($options['charset'])) {
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$query .= ' WITH ENCODING ' . $db->quote($options['charset'], 'text');
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}
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return $db->standaloneQuery($query, null, true);
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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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* @param string $name name of the database that is intended to be changed
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* @param array $options array with name, owner info
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function alterDatabase($name, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$query = '';
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if (!empty($options['name'])) {
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$query .= ' RENAME TO ' . $options['name'];
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}
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if (!empty($options['owner'])) {
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$query .= ' OWNER TO ' . $options['owner'];
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}
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if (empty($query)) {
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return MDB2_OK;
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}
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$query = 'ALTER DATABASE '. $db->quoteIdentifier($name, true) . $query;
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return $db->standaloneQuery($query, null, true);
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}
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// }}}
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// {{{ dropDatabase()
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/**
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* drop an existing database
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*
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* @param string $name name of the database that should be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function dropDatabase($name)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$name = $db->quoteIdentifier($name, true);
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$query = "DROP DATABASE $name";
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return $db->standaloneQuery($query, null, true);
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}
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// }}}
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// {{{ _getAdvancedFKOptions()
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/**
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* Return the FOREIGN KEY query section dealing with non-standard options
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* as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
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*
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* @param array $definition
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* @return string
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* @access protected
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*/
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function _getAdvancedFKOptions($definition)
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{
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$query = '';
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if (!empty($definition['match'])) {
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$query .= ' MATCH '.$definition['match'];
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}
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if (!empty($definition['onupdate'])) {
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$query .= ' ON UPDATE '.$definition['onupdate'];
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}
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if (!empty($definition['ondelete'])) {
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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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// {{{ 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, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$query = 'VACUUM';
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if (!empty($options['full'])) {
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$query .= ' FULL';
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}
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if (!empty($options['freeze'])) {
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$query .= ' FREEZE';
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}
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if (!empty($options['analyze'])) {
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$query .= ' ANALYZE';
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}
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if (!empty($table)) {
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$query .= ' '.$db->quoteIdentifier($table, true);
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}
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$result = $db->exec($query);
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if (MDB2::isError($result)) {
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return $result;
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ alterTable()
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/**
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* alter an existing table
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*
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* @param string $name name of the table that is intended to be changed.
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* @param array $changes associative array that contains the details of each type
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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 MDB2 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 MDB2 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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* 'name' => array(
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* 'length' => '20',
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* 'definition' => array(
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* 'type' => 'text',
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* 'length' => 20,
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* ),
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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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* 'definition' => array(
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* 'type' => 'text',
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* 'length' => 1,
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* 'default' => 'M',
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* ),
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* )
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* )
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* )
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*
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* @param boolean $check indicates whether the function should just check if the DBMS driver
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* can perform the requested table alterations if the value is true or
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* actually perform them otherwise.
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* @access public
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*/
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function alterTable($name, $changes, $check)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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foreach ($changes as $change_name => $change) {
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switch ($change_name) {
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case 'add':
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case 'remove':
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case 'change':
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case 'name':
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case 'rename':
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break;
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default:
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return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
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'change type "'.$change_name.'\" not yet supported', __FUNCTION__);
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}
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}
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if ($check) {
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return MDB2_OK;
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}
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$name = $db->quoteIdentifier($name, true);
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if (!empty($changes['remove']) && is_array($changes['remove'])) {
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foreach ($changes['remove'] as $field_name => $field) {
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$field_name = $db->quoteIdentifier($field_name, true);
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$query = 'DROP ' . $field_name;
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$result = $db->exec("ALTER TABLE $name $query");
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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}
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if (!empty($changes['rename']) && is_array($changes['rename'])) {
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foreach ($changes['rename'] as $field_name => $field) {
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$field_name = $db->quoteIdentifier($field_name, true);
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$result = $db->exec("ALTER TABLE $name RENAME COLUMN $field_name TO ".$db->quoteIdentifier($field['name'], true));
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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}
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if (!empty($changes['add']) && is_array($changes['add'])) {
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foreach ($changes['add'] as $field_name => $field) {
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$query = 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
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$result = $db->exec("ALTER TABLE $name $query");
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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}
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if (!empty($changes['change']) && is_array($changes['change'])) {
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foreach ($changes['change'] as $field_name => $field) {
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$field_name = $db->quoteIdentifier($field_name, true);
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if (!empty($field['definition']['type'])) {
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$server_info = $db->getServerVersion();
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if (MDB2::isError($server_info)) {
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return $server_info;
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}
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if (is_array($server_info) && $server_info['major'] < 8) {
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return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
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'changing column type for "'.$change_name.'\" requires PostgreSQL 8.0 or above', __FUNCTION__);
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}
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$db->loadModule('Datatype', null, true);
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$type = $db->datatype->getTypeDeclaration($field['definition']);
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$query = "ALTER $field_name TYPE $type USING CAST($field_name AS $type)";
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$result = $db->exec("ALTER TABLE $name $query");
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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if (array_key_exists('default', $field['definition'])) {
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$query = "ALTER $field_name SET DEFAULT ".$db->quote($field['definition']['default'], $field['definition']['type']);
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$result = $db->exec("ALTER TABLE $name $query");
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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if (array_key_exists('notnull', $field['definition'])) {
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$query = "ALTER $field_name ".($field['definition']['notnull'] ? 'SET' : 'DROP').' NOT NULL';
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$result = $db->exec("ALTER TABLE $name $query");
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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}
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}
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if (!empty($changes['name'])) {
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$change_name = $db->quoteIdentifier($changes['name'], true);
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$result = $db->exec("ALTER TABLE $name RENAME TO ".$change_name);
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ listDatabases()
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/**
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* list all databases
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*
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* @return mixed array of database names on success, a MDB2 error on failure
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* @access public
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*/
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function listDatabases()
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$query = 'SELECT datname FROM pg_database';
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$result2 = $db->standaloneQuery($query, array('text'), false);
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if (!MDB2::isResultCommon($result2)) {
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return $result2;
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}
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$result = $result2->fetchCol();
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$result2->free();
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if (MDB2::isError($result)) {
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return $result;
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
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}
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return $result;
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}
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// }}}
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// {{{ listUsers()
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/**
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* list all users
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*
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* @return mixed array of user names on success, a MDB2 error on failure
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* @access public
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*/
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function listUsers()
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$query = 'SELECT usename FROM pg_user';
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$result2 = $db->standaloneQuery($query, array('text'), false);
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if (!MDB2::isResultCommon($result2)) {
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return $result2;
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}
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$result = $result2->fetchCol();
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$result2->free();
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return $result;
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}
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// }}}
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// {{{ listViews()
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/**
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* list all views in the current database
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*
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|
* @return mixed array of view names on success, a MDB2 error on failure
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* @access public
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*/
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|
function listViews()
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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|
$query = "SELECT viewname
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FROM pg_views
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WHERE schemaname NOT IN ('pg_catalog', 'information_schema')
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AND viewname !~ '^pg_'";
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$result = $db->queryCol($query);
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if (MDB2::isError($result)) {
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return $result;
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|
}
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|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableViews()
|
|
|
|
/**
|
|
* list the views in the database that reference a given table
|
|
*
|
|
* @param string table for which all referenced views should be found
|
|
* @return mixed array of view names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableViews($table)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = 'SELECT viewname FROM pg_views NATURAL JOIN pg_tables';
|
|
$query.= ' WHERE tablename ='.$db->quote($table, 'text');
|
|
$result = $db->queryCol($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listFunctions()
|
|
|
|
/**
|
|
* list all functions in the current database
|
|
*
|
|
* @return mixed array of function names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listFunctions()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = "
|
|
SELECT
|
|
proname
|
|
FROM
|
|
pg_proc pr,
|
|
pg_type tp
|
|
WHERE
|
|
tp.oid = pr.prorettype
|
|
AND pr.proisagg = FALSE
|
|
AND tp.typname <> 'trigger'
|
|
AND pr.pronamespace IN
|
|
(SELECT oid FROM pg_namespace WHERE nspname NOT LIKE 'pg_%' AND nspname != 'information_schema')";
|
|
$result = $db->queryCol($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableTriggers()
|
|
|
|
/**
|
|
* list all triggers in the database that reference a given table
|
|
*
|
|
* @param string table for which all referenced triggers should be found
|
|
* @return mixed array of trigger names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableTriggers($table = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = 'SELECT trg.tgname AS trigger_name
|
|
FROM pg_trigger trg,
|
|
pg_class tbl
|
|
WHERE trg.tgrelid = tbl.oid';
|
|
if (null !== $table) {
|
|
$table = $db->quote(strtoupper($table), 'text');
|
|
$query .= " AND UPPER(tbl.relname) = $table";
|
|
}
|
|
$result = $db->queryCol($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTables()
|
|
|
|
/**
|
|
* list all tables in the current database
|
|
*
|
|
* @return mixed array of table names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTables()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
// gratuitously stolen from PEAR DB _getSpecialQuery in pgsql.php
|
|
$query = 'SELECT c.relname AS "Name"'
|
|
. ' FROM pg_class c, pg_user u'
|
|
. ' WHERE c.relowner = u.usesysid'
|
|
. " AND c.relkind = 'r'"
|
|
. ' AND NOT EXISTS'
|
|
. ' (SELECT 1 FROM pg_views'
|
|
. ' WHERE viewname = c.relname)'
|
|
. " AND c.relname !~ '^(pg_|sql_)'"
|
|
. ' UNION'
|
|
. ' SELECT c.relname AS "Name"'
|
|
. ' FROM pg_class c'
|
|
. " WHERE c.relkind = 'r'"
|
|
. ' AND NOT EXISTS'
|
|
. ' (SELECT 1 FROM pg_views'
|
|
. ' WHERE viewname = c.relname)'
|
|
. ' AND NOT EXISTS'
|
|
. ' (SELECT 1 FROM pg_user'
|
|
. ' WHERE usesysid = c.relowner)'
|
|
. " AND c.relname !~ '^pg_'";
|
|
$result = $db->queryCol($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 $db;
|
|
}
|
|
|
|
list($schema, $table) = $this->splitTableSchema($table);
|
|
|
|
$table = $db->quoteIdentifier($table, true);
|
|
if (!empty($schema)) {
|
|
$table = $db->quoteIdentifier($schema, true) . '.' .$table;
|
|
}
|
|
$db->setLimit(1);
|
|
$result2 = $db->query("SELECT * FROM $table");
|
|
if (MDB2::isError($result2)) {
|
|
return $result2;
|
|
}
|
|
$result = $result2->getColumnNames();
|
|
$result2->free();
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return array_flip($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 $db;
|
|
}
|
|
|
|
list($schema, $table) = $this->splitTableSchema($table);
|
|
|
|
$table = $db->quote($table, 'text');
|
|
$subquery = "SELECT indexrelid
|
|
FROM pg_index
|
|
LEFT JOIN pg_class ON pg_class.oid = pg_index.indrelid
|
|
LEFT JOIN pg_namespace ON pg_class.relnamespace = pg_namespace.oid
|
|
WHERE pg_class.relname = $table
|
|
AND indisunique != 't'
|
|
AND indisprimary != 't'";
|
|
if (!empty($schema)) {
|
|
$subquery .= ' AND pg_namespace.nspname = '.$db->quote($schema, 'text');
|
|
}
|
|
$query = "SELECT relname FROM pg_class WHERE oid IN ($subquery)";
|
|
$indexes = $db->queryCol($query, 'text');
|
|
if (MDB2::isError($indexes)) {
|
|
return $indexes;
|
|
}
|
|
|
|
$result = array();
|
|
foreach ($indexes as $index) {
|
|
$index = $this->_fixIndexName($index);
|
|
if (!empty($index)) {
|
|
$result[$index] = true;
|
|
}
|
|
}
|
|
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_change_key_case($result, $db->options['field_case']);
|
|
}
|
|
return array_keys($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 an UNIQUE index?
|
|
$query = 'SELECT relname
|
|
FROM pg_class
|
|
WHERE oid IN (
|
|
SELECT indexrelid
|
|
FROM pg_index, pg_class
|
|
WHERE pg_class.relname = '.$db->quote($table, 'text').'
|
|
AND pg_class.oid = pg_index.indrelid
|
|
AND indisunique = \'t\')
|
|
EXCEPT
|
|
SELECT conname
|
|
FROM pg_constraint, pg_class
|
|
WHERE pg_constraint.conrelid = pg_class.oid
|
|
AND relname = '. $db->quote($table, 'text');
|
|
$unique = $db->queryCol($query, 'text');
|
|
if (MDB2::isError($unique) || empty($unique)) {
|
|
// not an UNIQUE index, maybe a CONSTRAINT
|
|
return parent::dropConstraint($table, $name, $primary);
|
|
}
|
|
|
|
if (in_array($name, $unique)) {
|
|
$result = $db->exec('DROP INDEX '.$db->quoteIdentifier($name, true));
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
$idxname = $db->getIndexName($name);
|
|
if (in_array($idxname, $unique)) {
|
|
$result = $db->exec('DROP INDEX '.$db->quoteIdentifier($idxname, true));
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
|
$name . ' is not an existing constraint for table ' . $table, __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 $db;
|
|
}
|
|
|
|
list($schema, $table) = $this->splitTableSchema($table);
|
|
|
|
$table = $db->quote($table, 'text');
|
|
$query = 'SELECT conname
|
|
FROM pg_constraint
|
|
LEFT JOIN pg_class ON pg_constraint.conrelid = pg_class.oid
|
|
LEFT JOIN pg_namespace ON pg_class.relnamespace = pg_namespace.oid
|
|
WHERE relname = ' .$table;
|
|
if (!empty($schema)) {
|
|
$query .= ' AND pg_namespace.nspname = ' . $db->quote($schema, 'text');
|
|
}
|
|
$query .= '
|
|
UNION DISTINCT
|
|
SELECT relname
|
|
FROM pg_class
|
|
WHERE oid IN (
|
|
SELECT indexrelid
|
|
FROM pg_index
|
|
LEFT JOIN pg_class ON pg_class.oid = pg_index.indrelid
|
|
LEFT JOIN pg_namespace ON pg_class.relnamespace = pg_namespace.oid
|
|
WHERE pg_class.relname = '.$table.'
|
|
AND indisunique = \'t\'';
|
|
if (!empty($schema)) {
|
|
$query .= ' AND pg_namespace.nspname = ' . $db->quote($schema, 'text');
|
|
}
|
|
$query .= ')';
|
|
$constraints = $db->queryCol($query);
|
|
if (MDB2::isError($constraints)) {
|
|
return $constraints;
|
|
}
|
|
|
|
$result = array();
|
|
foreach ($constraints as $constraint) {
|
|
$constraint = $this->_fixIndexName($constraint);
|
|
if (!empty($constraint)) {
|
|
$result[$constraint] = true;
|
|
}
|
|
}
|
|
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
|
|
&& $db->options['field_case'] == CASE_LOWER
|
|
) {
|
|
$result = array_change_key_case($result, $db->options['field_case']);
|
|
}
|
|
return array_keys($result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ createSequence()
|
|
|
|
/**
|
|
* create sequence
|
|
*
|
|
* @param string $seq_name name of the sequence to be created
|
|
* @param string $start start value of the sequence; default is 1
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function createSequence($seq_name, $start = 1)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
|
|
$result = $db->exec("CREATE SEQUENCE $sequence_name INCREMENT 1".
|
|
($start < 1 ? " MINVALUE $start" : '')." START $start");
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ dropSequence()
|
|
|
|
/**
|
|
* drop existing sequence
|
|
*
|
|
* @param string $seq_name name of the sequence to be dropped
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function dropSequence($seq_name)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
|
|
$result = $db->exec("DROP SEQUENCE $sequence_name");
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listSequences()
|
|
|
|
/**
|
|
* list all sequences in the current database
|
|
*
|
|
* @return mixed array of sequence names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listSequences()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = "SELECT relname FROM pg_class WHERE relkind = 'S' AND relnamespace IN";
|
|
$query.= "(SELECT oid FROM pg_namespace WHERE nspname NOT LIKE 'pg_%' AND nspname != 'information_schema')";
|
|
$table_names = $db->queryCol($query);
|
|
if (MDB2::isError($table_names)) {
|
|
return $table_names;
|
|
}
|
|
$result = array();
|
|
foreach ($table_names as $table_name) {
|
|
$result[] = $this->_fixSequenceName($table_name);
|
|
}
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
|
|
}
|
|
return $result;
|
|
}
|
|
}
|
|
?>
|