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+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, |
+// | Stig. S. Bakken, Lukas Smith |
+// | All rights reserved. |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
+// | API as well as database abstraction for PHP applications. |
+// | This LICENSE is in the BSD license style. |
+// | |
+// | Redistribution and use in source and binary forms, with or without |
+// | modification, are permitted provided that the following conditions |
+// | are met: |
+// | |
+// | Redistributions of source code must retain the above copyright |
+// | notice, this list of conditions and the following disclaimer. |
+// | |
+// | Redistributions in binary form must reproduce the above copyright |
+// | notice, this list of conditions and the following disclaimer in the |
+// | documentation and/or other materials provided with the distribution. |
+// | |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission. |
+// | |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
+// | POSSIBILITY OF SUCH DAMAGE. |
+// +----------------------------------------------------------------------+
+// | Author: Paul Cooper <pgc@ucecom.com> |
+// +----------------------------------------------------------------------+
+//
+// $Id: pgsql.php,v 1.87 2008/11/29 14:09:59 afz Exp $
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+/**
+ * MDB2 MySQL driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Driver_Manager_pgsql extends MDB2_Driver_Manager_Common
+{
+ // {{{ createDatabase()
+
+ /**
+ * create a new database
+ *
+ * @param string $name name of the database that should be created
+ * @param array $options array with charset info
+ *
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function createDatabase($name, $options = array())
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $name = $db->quoteIdentifier($name, true);
+ $query = 'CREATE DATABASE ' . $name;
+ if (!empty($options['charset'])) {
+ $query .= ' WITH ENCODING ' . $db->quote($options['charset'], 'text');
+ }
+ return $db->standaloneQuery($query, null, true);
+ }
+
+ // }}}
+ // {{{ alterDatabase()
+
+ /**
+ * alter an existing database
+ *
+ * @param string $name name of the database that is intended to be changed
+ * @param array $options array with name, owner info
+ *
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function alterDatabase($name, $options = array())
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $query = 'ALTER DATABASE '. $db->quoteIdentifier($name, true);
+ if (!empty($options['name'])) {
+ $query .= ' RENAME TO ' . $options['name'];
+ }
+ if (!empty($options['owner'])) {
+ $query .= ' OWNER TO ' . $options['owner'];
+ }
+ return $db->standaloneQuery($query, null, true);
+ }
+
+ // }}}
+ // {{{ dropDatabase()
+
+ /**
+ * drop an existing database
+ *
+ * @param string $name name of the database that should be dropped
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function dropDatabase($name)
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $name = $db->quoteIdentifier($name, true);
+ $query = "DROP DATABASE $name";
+ return $db->standaloneQuery($query, null, true);
+ }
+
+ // }}}
+ // {{{ _getAdvancedFKOptions()
+
+ /**
+ * Return the FOREIGN KEY query section dealing with non-standard options
+ * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+ *
+ * @param array $definition
+ * @return string
+ * @access protected
+ */
+ function _getAdvancedFKOptions($definition)
+ {
+ $query = '';
+ if (!empty($definition['match'])) {
+ $query .= ' MATCH '.$definition['match'];
+ }
+ if (!empty($definition['onupdate'])) {
+ $query .= ' ON UPDATE '.$definition['onupdate'];
+ }
+ if (!empty($definition['ondelete'])) {
+ $query .= ' ON DELETE '.$definition['ondelete'];
+ }
+ if (!empty($definition['deferrable'])) {
+ $query .= ' DEFERRABLE';
+ } else {
+ $query .= ' NOT DEFERRABLE';
+ }
+ if (!empty($definition['initiallydeferred'])) {
+ $query .= ' INITIALLY DEFERRED';
+ } else {
+ $query .= ' INITIALLY IMMEDIATE';
+ }
+ return $query;
+ }
+
+ // }}}
+ // {{{ truncateTable()
+
+ /**
+ * Truncate an existing table (if the TRUNCATE TABLE syntax is not supported,
+ * it falls back to a DELETE FROM TABLE query)
+ *
+ * @param string $name name of the table that should be truncated
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function truncateTable($name)
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $name = $db->quoteIdentifier($name, true);
+ return $db->exec("TRUNCATE TABLE $name");
+ }
+
+ // }}}
+ // {{{ vacuum()
+
+ /**
+ * Optimize (vacuum) all the tables in the db (or only the specified table)
+ * and optionally run ANALYZE.
+ *
+ * @param string $table table name (all the tables if empty)
+ * @param array $options an array with driver-specific options:
+ * - timeout [int] (in seconds) [mssql-only]
+ * - analyze [boolean] [pgsql and mysql]
+ * - full [boolean] [pgsql-only]
+ * - freeze [boolean] [pgsql-only]
+ *
+ * @return mixed MDB2_OK success, a MDB2 error on failure
+ * @access public
+ */
+ function vacuum($table = null, $options = array())
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+ $query = 'VACUUM';
+
+ if (!empty($options['full'])) {
+ $query .= ' FULL';
+ }
+ if (!empty($options['freeze'])) {
+ $query .= ' FREEZE';
+ }
+ if (!empty($options['analyze'])) {
+ $query .= ' ANALYZE';
+ }
+
+ if (!empty($table)) {
+ $query .= ' '.$db->quoteIdentifier($table, true);
+ }
+ return $db->exec($query);
+ }
+
+ // }}}
+ // {{{ alterTable()
+
+ /**
+ * alter an existing table
+ *
+ * @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 =& $this->getDBInstance();
+ if (PEAR::isError($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($changes['remove']) && is_array($changes['remove'])) {
+ foreach ($changes['remove'] as $field_name => $field) {
+ $field_name = $db->quoteIdentifier($field_name, true);
+ $query = 'DROP ' . $field_name;
+ $result = $db->exec("ALTER TABLE $name $query");
+ if (PEAR::isError($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);
+ $result = $db->exec("ALTER TABLE $name RENAME COLUMN $field_name TO ".$db->quoteIdentifier($field['name'], true));
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ }
+ }
+
+ if (!empty($changes['add']) && is_array($changes['add'])) {
+ foreach ($changes['add'] as $field_name => $field) {
+ $query = 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
+ $result = $db->exec("ALTER TABLE $name $query");
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ }
+ }
+
+ if (!empty($changes['change']) && is_array($changes['change'])) {
+ foreach ($changes['change'] as $field_name => $field) {
+ $field_name = $db->quoteIdentifier($field_name, true);
+ if (!empty($field['definition']['type'])) {
+ $server_info = $db->getServerVersion();
+ if (PEAR::isError($server_info)) {
+ return $server_info;
+ }
+ if (is_array($server_info) && $server_info['major'] < 8) {
+ return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+ 'changing column type for "'.$change_name.'\" requires PostgreSQL 8.0 or above', __FUNCTION__);
+ }
+ $db->loadModule('Datatype', null, true);
+ $type = $db->datatype->getTypeDeclaration($field['definition']);
+ $query = "ALTER $field_name TYPE $type USING CAST($field_name AS $type)";
+ $result = $db->exec("ALTER TABLE $name $query");
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ }
+ if (array_key_exists('default', $field['definition'])) {
+ $query = "ALTER $field_name SET DEFAULT ".$db->quote($field['definition']['default'], $field['definition']['type']);
+ $result = $db->exec("ALTER TABLE $name $query");
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ }
+ if (!empty($field['definition']['notnull'])) {
+ $query = "ALTER $field_name ".($field['definition']['notnull'] ? 'SET' : 'DROP').' NOT NULL';
+ $result = $db->exec("ALTER TABLE $name $query");
+ if (PEAR::isError($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 (PEAR::isError($result)) {
+ return $result;
+ }
+ }
+
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ listDatabases()
+
+ /**
+ * list all databases
+ *
+ * @return mixed array of database names on success, a MDB2 error on failure
+ * @access public
+ */
+ function listDatabases()
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $query = 'SELECT datname FROM pg_database';
+ $result2 = $db->standaloneQuery($query, array('text'), false);
+ if (!MDB2::isResultCommon($result2)) {
+ return $result2;
+ }
+
+ $result = $result2->fetchCol();
+ $result2->free();
+ if (PEAR::isError($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;
+ }
+
+ // }}}
+ // {{{ listUsers()
+
+ /**
+ * list all users
+ *
+ * @return mixed array of user names on success, a MDB2 error on failure
+ * @access public
+ */
+ function listUsers()
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $query = 'SELECT usename FROM pg_user';
+ $result2 = $db->standaloneQuery($query, array('text'), false);
+ if (!MDB2::isResultCommon($result2)) {
+ return $result2;
+ }
+
+ $result = $result2->fetchCol();
+ $result2->free();
+ return $result;
+ }
+
+ // }}}
+ // {{{ listViews()
+
+ /**
+ * list all views in the current database
+ *
+ * @return mixed array of view names on success, a MDB2 error on failure
+ * @access public
+ */
+ function listViews()
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $query = "SELECT viewname
+ FROM pg_views
+ WHERE schemaname NOT IN ('pg_catalog', 'information_schema')
+ AND viewname !~ '^pg_'";
+ $result = $db->queryCol($query);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+ $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+ }
+ return $result;
+ }
+
+ // }}}
+ // {{{ listTableViews()
+
+ /**
+ * list the views in the database that reference a given table
+ *
+ * @param string table for which all referenced views should be found
+ * @return mixed array of view names on success, a MDB2 error on failure
+ * @access public
+ */
+ function listTableViews($table)
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($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 (PEAR::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 =& $this->getDBInstance();
+ if (PEAR::isError($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 (PEAR::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 =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $query = 'SELECT trg.tgname AS trigger_name
+ FROM pg_trigger trg,
+ pg_class tbl
+ WHERE trg.tgrelid = tbl.oid';
+ if (!is_null($table)) {
+ $table = $db->quote(strtoupper($table), 'text');
+ $query .= " AND tbl.relname = $table";
+ }
+ $result = $db->queryCol($query);
+ if (PEAR::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 =& $this->getDBInstance();
+ if (PEAR::isError($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 (PEAR::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 =& $this->getDBInstance();
+ if (PEAR::isError($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 $table");
+ if (PEAR::isError($result2)) {
+ return $result2;
+ }
+ $result = $result2->getColumnNames();
+ $result2->free();
+ if (PEAR::isError($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 =& $this->getDBInstance();
+ if (PEAR::isError($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 (PEAR::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 =& $this->getDBInstance();
+ if (PEAR::isError($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 (PEAR::isError($unique) || empty($unique)) {
+ // not an UNIQUE index, maybe a CONSTRAINT
+ return parent::dropConstraint($table, $name, $primary);
+ }
+
+ if (in_array($name, $unique)) {
+ return $db->exec('DROP INDEX '.$db->quoteIdentifier($name, true));
+ }
+ $idxname = $db->getIndexName($name);
+ if (in_array($idxname, $unique)) {
+ return $db->exec('DROP INDEX '.$db->quoteIdentifier($idxname, true));
+ }
+ 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 =& $this->getDBInstance();
+ if (PEAR::isError($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 (PEAR::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 =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+ return $db->exec("CREATE SEQUENCE $sequence_name INCREMENT 1".
+ ($start < 1 ? " MINVALUE $start" : '')." START $start");
+ }
+
+ // }}}
+ // {{{ dropSequence()
+
+ /**
+ * drop existing sequence
+ *
+ * @param string $seq_name name of the sequence to be dropped
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function dropSequence($seq_name)
+ {
+ $db =& $this->getDBInstance();
+ if (PEAR::isError($db)) {
+ return $db;
+ }
+
+ $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+ return $db->exec("DROP SEQUENCE $sequence_name");
+ }
+
+ // }}}
+ // {{{ 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 =& $this->getDBInstance();
+ if (PEAR::isError($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 (PEAR::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;
+ }
+}
+?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-09 03:18:24 +0000