Merge branch 'pdo'

Conflicts:
	CHANGELOG

1 files changed, 0 insertions, 1548 deletions

diff --git a/program/lib/MDB2/Driver/pgsql.php b/program/lib/MDB2/Driver/pgsql.php
deleted file mode 100644
index 73f6a0dd2..000000000
--- a/program/lib/MDB2/Driver/pgsql.php
+++ /dev/null
@@ -1,1548 +0,0 @@
-<?php
-// vim: set et ts=4 sw=4 fdm=marker:
-// +----------------------------------------------------------------------+
-// | 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 295587 2010-02-28 17:16:38Z quipo $
-
-/**
- * MDB2 PostGreSQL driver
- *
- * @package MDB2
- * @category Database
- * @author  Paul Cooper <pgc@ucecom.com>
- */
-class MDB2_Driver_pgsql extends MDB2_Driver_Common
-{
-    // {{{ properties
-    var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => '\\');
-
-    var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"');
-    // }}}
-    // {{{ constructor
-
-    /**
-     * Constructor
-     */
-    function __construct()
-    {
-        parent::__construct();
-
-        $this->phptype = 'pgsql';
-        $this->dbsyntax = 'pgsql';
-
-        $this->supported['sequences'] = true;
-        $this->supported['indexes'] = true;
-        $this->supported['affected_rows'] = true;
-        $this->supported['summary_functions'] = true;
-        $this->supported['order_by_text'] = true;
-        $this->supported['transactions'] = true;
-        $this->supported['savepoints'] = true;
-        $this->supported['current_id'] = true;
-        $this->supported['limit_queries'] = true;
-        $this->supported['LOBs'] = true;
-        $this->supported['replace'] = 'emulated';
-        $this->supported['sub_selects'] = true;
-        $this->supported['triggers'] = true;
-        $this->supported['auto_increment'] = 'emulated';
-        $this->supported['primary_key'] = true;
-        $this->supported['result_introspection'] = true;
-        $this->supported['prepared_statements'] = true;
-        $this->supported['identifier_quoting'] = true;
-        $this->supported['pattern_escaping'] = true;
-        $this->supported['new_link'] = true;
-
-        $this->options['DBA_username'] = false;
-        $this->options['DBA_password'] = false;
-        $this->options['multi_query'] = false;
-        $this->options['disable_smart_seqname'] = true;
-        $this->options['max_identifiers_length'] = 63;
-    }
-
-    // }}}
-    // {{{ errorInfo()
-
-    /**
-     * This method is used to collect information about an error
-     *
-     * @param integer $error
-     * @return array
-     * @access public
-     */
-    function errorInfo($error = null)
-    {
-        // Fall back to MDB2_ERROR if there was no mapping.
-        $error_code = MDB2_ERROR;
-
-        $native_msg = '';
-        if (is_resource($error)) {
-            $native_msg = @pg_result_error($error);
-        } elseif ($this->connection) {
-            $native_msg = @pg_last_error($this->connection);
-            if (!$native_msg && @pg_connection_status($this->connection) === PGSQL_CONNECTION_BAD) {
-                $native_msg = 'Database connection has been lost.';
-                $error_code = MDB2_ERROR_CONNECT_FAILED;
-            }
-        } else {
-            $native_msg = @pg_last_error();
-        }
-
-        static $error_regexps;
-        if (empty($error_regexps)) {
-            $error_regexps = array(
-                '/column .* (of relation .*)?does not exist/i'
-                    => MDB2_ERROR_NOSUCHFIELD,
-                '/(relation|sequence|table).*does not exist|class .* not found/i'
-                    => MDB2_ERROR_NOSUCHTABLE,
-                '/database .* does not exist/'
-                    => MDB2_ERROR_NOT_FOUND,
-                '/constraint .* does not exist/'
-                    => MDB2_ERROR_NOT_FOUND,
-                '/index .* does not exist/'
-                    => MDB2_ERROR_NOT_FOUND,
-                '/database .* already exists/i'
-                    => MDB2_ERROR_ALREADY_EXISTS,
-                '/relation .* already exists/i'
-                    => MDB2_ERROR_ALREADY_EXISTS,
-                '/(divide|division) by zero$/i'
-                    => MDB2_ERROR_DIVZERO,
-                '/pg_atoi: error in .*: can\'t parse /i'
-                    => MDB2_ERROR_INVALID_NUMBER,
-                '/invalid input syntax for( type)? (integer|numeric)/i'
-                    => MDB2_ERROR_INVALID_NUMBER,
-                '/value .* is out of range for type \w*int/i'
-                    => MDB2_ERROR_INVALID_NUMBER,
-                '/integer out of range/i'
-                    => MDB2_ERROR_INVALID_NUMBER,
-                '/value too long for type character/i'
-                    => MDB2_ERROR_INVALID,
-                '/attribute .* not found|relation .* does not have attribute/i'
-                    => MDB2_ERROR_NOSUCHFIELD,
-                '/column .* specified in USING clause does not exist in (left|right) table/i'
-                    => MDB2_ERROR_NOSUCHFIELD,
-                '/parser: parse error at or near/i'
-                    => MDB2_ERROR_SYNTAX,
-                '/syntax error at/'
-                    => MDB2_ERROR_SYNTAX,
-                '/column reference .* is ambiguous/i'
-                    => MDB2_ERROR_SYNTAX,
-                '/permission denied/'
-                    => MDB2_ERROR_ACCESS_VIOLATION,
-                '/violates not-null constraint/'
-                    => MDB2_ERROR_CONSTRAINT_NOT_NULL,
-                '/violates [\w ]+ constraint/'
-                    => MDB2_ERROR_CONSTRAINT,
-                '/referential integrity violation/'
-                    => MDB2_ERROR_CONSTRAINT,
-                '/more expressions than target columns/i'
-                    => MDB2_ERROR_VALUE_COUNT_ON_ROW,
-            );
-        }
-        if (is_numeric($error) && $error < 0) {
-            $error_code = $error;
-        } else {
-            foreach ($error_regexps as $regexp => $code) {
-                if (preg_match($regexp, $native_msg)) {
-                    $error_code = $code;
-                    break;
-                }
-            }
-        }
-        return array($error_code, null, $native_msg);
-    }
-
-    // }}}
-    // {{{ escape()
-
-    /**
-     * Quotes a string so it can be safely used in a query. It will quote
-     * the text so it can safely be used within a query.
-     *
-     * @param   string  the input string to quote
-     * @param   bool    escape wildcards
-     *
-     * @return  string  quoted string
-     *
-     * @access  public
-     */
-    function escape($text, $escape_wildcards = false)
-    {
-        if ($escape_wildcards) {
-            $text = $this->escapePattern($text);
-        }
-        $connection = $this->getConnection();
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-        if (is_resource($connection) && version_compare(PHP_VERSION, '5.2.0RC5', '>=')) {
-            $text = @pg_escape_string($connection, $text);
-        } else {
-            $text = @pg_escape_string($text);
-        }
-        return $text;
-    }
-
-    // }}}
-    // {{{ beginTransaction()
-
-    /**
-     * Start a transaction or set a savepoint.
-     *
-     * @param   string  name of a savepoint to set
-     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
-     *
-     * @access  public
-     */
-    function beginTransaction($savepoint = null)
-    {
-        $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
-        if (null !== $savepoint) {
-            if (!$this->in_transaction) {
-                return $this->raiseError(MDB2_ERROR_INVALID, null, null,
-                    'savepoint cannot be released when changes are auto committed', __FUNCTION__);
-            }
-            $query = 'SAVEPOINT '.$savepoint;
-            return $this->_doQuery($query, true);
-        }
-        if ($this->in_transaction) {
-            return MDB2_OK;  //nothing to do
-        }
-        if (!$this->destructor_registered && $this->opened_persistent) {
-            $this->destructor_registered = true;
-            register_shutdown_function('MDB2_closeOpenTransactions');
-        }
-        $result = $this->_doQuery('BEGIN', true);
-        if (PEAR::isError($result)) {
-            return $result;
-        }
-        $this->in_transaction = true;
-        return MDB2_OK;
-    }
-
-    // }}}
-    // {{{ commit()
-
-    /**
-     * Commit the database changes done during a transaction that is in
-     * progress or release a savepoint. This function may only be called when
-     * auto-committing is disabled, otherwise it will fail. Therefore, a new
-     * transaction is implicitly started after committing the pending changes.
-     *
-     * @param   string  name of a savepoint to release
-     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
-     *
-     * @access  public
-     */
-    function commit($savepoint = null)
-    {
-        $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
-        if (!$this->in_transaction) {
-            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
-                'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
-        }
-        if (null !== $savepoint) {
-            $query = 'RELEASE SAVEPOINT '.$savepoint;
-            return $this->_doQuery($query, true);
-        }
-
-        $result = $this->_doQuery('COMMIT', true);
-        if (PEAR::isError($result)) {
-            return $result;
-        }
-        $this->in_transaction = false;
-        return MDB2_OK;
-    }
-
-    // }}}
-    // {{{ rollback()
-
-    /**
-     * Cancel any database changes done during a transaction or since a specific
-     * savepoint that is in progress. This function may only be called when
-     * auto-committing is disabled, otherwise it will fail. Therefore, a new
-     * transaction is implicitly started after canceling the pending changes.
-     *
-     * @param   string  name of a savepoint to rollback to
-     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
-     *
-     * @access  public
-     */
-    function rollback($savepoint = null)
-    {
-        $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
-        if (!$this->in_transaction) {
-            return $this->raiseError(MDB2_ERROR_INVALID, null, null,
-                'rollback cannot be done changes are auto committed', __FUNCTION__);
-        }
-        if (null !== $savepoint) {
-            $query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
-            return $this->_doQuery($query, true);
-        }
-
-        $query = 'ROLLBACK';
-        $result = $this->_doQuery($query, true);
-        if (PEAR::isError($result)) {
-            return $result;
-        }
-        $this->in_transaction = false;
-        return MDB2_OK;
-    }
-
-    // }}}
-    // {{{ function setTransactionIsolation()
-
-    /**
-     * Set the transacton isolation level.
-     *
-     * @param   string  standard isolation level
-     *                  READ UNCOMMITTED (allows dirty reads)
-     *                  READ COMMITTED (prevents dirty reads)
-     *                  REPEATABLE READ (prevents nonrepeatable reads)
-     *                  SERIALIZABLE (prevents phantom reads)
-     * @param   array some transaction options:
-     *                  'wait' => 'WAIT' | 'NO WAIT'
-     *                  'rw'   => 'READ WRITE' | 'READ ONLY'
-     *
-     * @return  mixed   MDB2_OK on success, a MDB2 error on failure
-     *
-     * @access  public
-     * @since   2.1.1
-     */
-    function setTransactionIsolation($isolation, $options = array())
-    {
-        $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
-        switch ($isolation) {
-        case 'READ UNCOMMITTED':
-        case 'READ COMMITTED':
-        case 'REPEATABLE READ':
-        case 'SERIALIZABLE':
-            break;
-        default:
-            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
-                'isolation level is not supported: '.$isolation, __FUNCTION__);
-        }
-
-        $query = "SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL $isolation";
-        return $this->_doQuery($query, true);
-    }
-
-    // }}}
-    // {{{ _doConnect()
-
-    /**
-     * Do the grunt work of connecting to the database
-     *
-     * @return mixed connection resource on success, MDB2 Error Object on failure
-     * @access protected
-     */
-    function _doConnect($username, $password, $database_name, $persistent = false)
-    {
-        if (!PEAR::loadExtension($this->phptype)) {
-            return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
-                'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
-        }
-        
-        if ($database_name == '') {
-            $database_name = 'template1';
-        }
-
-        $protocol = $this->dsn['protocol'] ? $this->dsn['protocol'] : 'tcp';
-
-        $params = array('');
-        if ($protocol == 'tcp') {
-            if ($this->dsn['hostspec']) {
-                $params[0].= 'host=' . $this->dsn['hostspec'];
-            }
-            if ($this->dsn['port']) {
-                $params[0].= ' port=' . $this->dsn['port'];
-            }
-        } elseif ($protocol == 'unix') {
-            // Allow for pg socket in non-standard locations.
-            if ($this->dsn['socket']) {
-                $params[0].= 'host=' . $this->dsn['socket'];
-            }
-            if ($this->dsn['port']) {
-                $params[0].= ' port=' . $this->dsn['port'];
-            }
-        }
-        if ($database_name) {
-            $params[0].= ' dbname=\'' . addslashes($database_name) . '\'';
-        }
-        if ($username) {
-            $params[0].= ' user=\'' . addslashes($username) . '\'';
-        }
-        if ($password) {
-            $params[0].= ' password=\'' . addslashes($password) . '\'';
-        }
-        if (!empty($this->dsn['options'])) {
-            $params[0].= ' options=' . $this->dsn['options'];
-        }
-        if (!empty($this->dsn['tty'])) {
-            $params[0].= ' tty=' . $this->dsn['tty'];
-        }
-        if (!empty($this->dsn['connect_timeout'])) {
-            $params[0].= ' connect_timeout=' . $this->dsn['connect_timeout'];
-        }
-        if (!empty($this->dsn['sslmode'])) {
-            $params[0].= ' sslmode=' . $this->dsn['sslmode'];
-        }
-        if (!empty($this->dsn['service'])) {
-            $params[0].= ' service=' . $this->dsn['service'];
-        }
-
-        if ($this->_isNewLinkSet()) {
-            if (version_compare(phpversion(), '4.3.0', '>=')) {
-                $params[] = PGSQL_CONNECT_FORCE_NEW;
-            }
-        }
-
-        $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect';
-        $connection = @call_user_func_array($connect_function, $params);
-        if (!$connection) {
-            return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
-                'unable to establish a connection', __FUNCTION__);
-        }
-
-       if (empty($this->dsn['disable_iso_date'])) {
-            if (!@pg_query($connection, "SET SESSION DATESTYLE = 'ISO'")) {
-                return $this->raiseError(null, null, null,
-                    'Unable to set date style to iso', __FUNCTION__);
-            }
-       }
-
-        if (!empty($this->dsn['charset'])) {
-            $result = $this->setCharset($this->dsn['charset'], $connection);
-            if (PEAR::isError($result)) {
-                return $result;
-            }
-        }
-
-        // Enable extra compatibility settings on 8.2 and later
-        if (function_exists('pg_parameter_status')) {
-            $version = pg_parameter_status($connection, 'server_version');
-            if ($version == false) {
-                return $this->raiseError(null, null, null,
-                  'Unable to retrieve server version', __FUNCTION__);
-            }
-            $version = explode ('.', $version);
-            if (    $version['0'] > 8
-                || ($version['0'] == 8 && $version['1'] >= 2)
-            ) {
-                if (!@pg_query($connection, "SET SESSION STANDARD_CONFORMING_STRINGS = OFF")) {
-                    return $this->raiseError(null, null, null,
-                      'Unable to set standard_conforming_strings to off', __FUNCTION__);
-                }
-
-                if (!@pg_query($connection, "SET SESSION ESCAPE_STRING_WARNING = OFF")) {
-                    return $this->raiseError(null, null, null,
-                      'Unable to set escape_string_warning to off', __FUNCTION__);
-                }
-            }
-        }
-
-        return $connection;
-    }
-
-    // }}}
-    // {{{ connect()
-
-    /**
-     * Connect to the database
-     *
-     * @return true on success, MDB2 Error Object on failure
-     * @access public
-     */
-    function connect()
-    {
-        if (is_resource($this->connection)) {
-            //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
-            if (MDB2::areEquals($this->connected_dsn, $this->dsn)
-                && $this->connected_database_name == $this->database_name
-                && ($this->opened_persistent == $this->options['persistent'])
-            ) {
-                return MDB2_OK;
-            }
-            $this->disconnect(false);
-        }
-
-        if ($this->database_name) {
-            $connection = $this->_doConnect($this->dsn['username'],
-                                            $this->dsn['password'],
-                                            $this->database_name,
-                                            $this->options['persistent']);
-            if (PEAR::isError($connection)) {
-                return $connection;
-            }
-
-            $this->connection = $connection;
-            $this->connected_dsn = $this->dsn;
-            $this->connected_database_name = $this->database_name;
-            $this->opened_persistent = $this->options['persistent'];
-            $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
-        }
-
-        return MDB2_OK;
-    }
-
-    // }}}
-    // {{{ setCharset()
-
-    /**
-     * Set the charset on the current connection
-     *
-     * @param string    charset
-     * @param resource  connection handle
-     *
-     * @return true on success, MDB2 Error Object on failure
-     */
-    function setCharset($charset, $connection = null)
-    {
-        if (null === $connection) {
-            $connection = $this->getConnection();
-            if (PEAR::isError($connection)) {
-                return $connection;
-            }
-        }
-        if (is_array($charset)) {
-            $charset   = array_shift($charset);
-            $this->warnings[] = 'postgresql does not support setting client collation';
-        }
-        $result = @pg_set_client_encoding($connection, $charset);
-        if ($result == -1) {
-            return $this->raiseError(null, null, null,
-                'Unable to set client charset: '.$charset, __FUNCTION__);
-        }
-        return MDB2_OK;
-    }
-
-    // }}}
-    // {{{ databaseExists()
-
-    /**
-     * check if given database name is exists?
-     *
-     * @param string $name    name of the database that should be checked
-     *
-     * @return mixed true/false on success, a MDB2 error on failure
-     * @access public
-     */
-    function databaseExists($name)
-    {
-        $res = $this->_doConnect($this->dsn['username'],
-                                 $this->dsn['password'],
-                                 $this->escape($name),
-                                 $this->options['persistent']);
-        if (!PEAR::isError($res)) {
-            return true;
-        }
-
-        return false;
-    }
-
-    // }}}
-    // {{{ disconnect()
-
-    /**
-     * Log out and disconnect from the database.
-     *
-     * @param  boolean $force if the disconnect should be forced even if the
-     *                        connection is opened persistently
-     * @return mixed true on success, false if not connected and error
-     *                object on error
-     * @access public
-     */
-    function disconnect($force = true)
-    {
-        if (is_resource($this->connection)) {
-            if ($this->in_transaction) {
-                $dsn = $this->dsn;
-                $database_name = $this->database_name;
-                $persistent = $this->options['persistent'];
-                $this->dsn = $this->connected_dsn;
-                $this->database_name = $this->connected_database_name;
-                $this->options['persistent'] = $this->opened_persistent;
-                $this->rollback();
-                $this->dsn = $dsn;
-                $this->database_name = $database_name;
-                $this->options['persistent'] = $persistent;
-            }
-
-            if (!$this->opened_persistent || $force) {
-                $ok = @pg_close($this->connection);
-                if (!$ok) {
-                    return $this->raiseError(MDB2_ERROR_DISCONNECT_FAILED,
-                           null, null, null, __FUNCTION__);
-                }
-            }
-        } else {
-            return false;
-        }
-        return parent::disconnect($force);
-    }
-
-    // }}}
-    // {{{ standaloneQuery()
-
-    /**
-     * execute a query as DBA
-     *
-     * @param string $query the SQL query
-     * @param mixed   $types  array that contains the types of the columns in
-     *                        the result set
-     * @param boolean $is_manip  if the query is a manipulation query
-     * @return mixed MDB2_OK on success, a MDB2 error on failure
-     * @access public
-     */
-    function standaloneQuery($query, $types = null, $is_manip = false)
-    {
-        $user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username'];
-        $pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password'];
-        $connection = $this->_doConnect($user, $pass, $this->database_name, $this->options['persistent']);
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-
-        $offset = $this->offset;
-        $limit = $this->limit;
-        $this->offset = $this->limit = 0;
-        $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
-
-        $result = $this->_doQuery($query, $is_manip, $connection, $this->database_name);
-        if (!PEAR::isError($result)) {
-            if ($is_manip) {
-                $result =  $this->_affectedRows($connection, $result);
-            } else {
-                $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset);
-            }
-        }
-
-        @pg_close($connection);
-        return $result;
-    }
-
-    // }}}
-    // {{{ _doQuery()
-
-    /**
-     * Execute a query
-     * @param string $query  query
-     * @param boolean $is_manip  if the query is a manipulation query
-     * @param resource $connection
-     * @param string $database_name
-     * @return result or error object
-     * @access protected
-     */
-    function _doQuery($query, $is_manip = false, $connection = null, $database_name = null)
-    {
-        $this->last_query = $query;
-        $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
-        if ($result) {
-            if (PEAR::isError($result)) {
-                return $result;
-            }
-            $query = $result;
-        }
-        if ($this->options['disable_query']) {
-            $result = $is_manip ? 0 : null;
-            return $result;
-        }
-
-        if (null === $connection) {
-            $connection = $this->getConnection();
-            if (PEAR::isError($connection)) {
-                return $connection;
-            }
-        }
-
-        $function = $this->options['multi_query'] ? 'pg_send_query' : 'pg_query';
-        $result = @$function($connection, $query);
-        if (!$result) {
-            $err = $this->raiseError(null, null, null,
-                'Could not execute statement', __FUNCTION__);
-            return $err;
-        } elseif ($this->options['multi_query']) {
-            if (!($result = @pg_get_result($connection))) {
-                $err = $this->raiseError(null, null, null,
-                        'Could not get the first result from a multi query', __FUNCTION__);
-                return $err;
-            }
-        }
-
-        $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
-        return $result;
-    }
-
-    // }}}
-    // {{{ _affectedRows()
-
-    /**
-     * Returns the number of rows affected
-     *
-     * @param resource $result
-     * @param resource $connection
-     * @return mixed MDB2 Error Object or the number of rows affected
-     * @access private
-     */
-    function _affectedRows($connection, $result = null)
-    {
-        if (null === $connection) {
-            $connection = $this->getConnection();
-            if (PEAR::isError($connection)) {
-                return $connection;
-            }
-        }
-        return @pg_affected_rows($result);
-    }
-
-    // }}}
-    // {{{ _modifyQuery()
-
-    /**
-     * Changes a query string for various DBMS specific reasons
-     *
-     * @param string $query  query to modify
-     * @param boolean $is_manip  if it is a DML query
-     * @param integer $limit  limit the number of rows
-     * @param integer $offset  start reading from given offset
-     * @return string modified query
-     * @access protected
-     */
-    function _modifyQuery($query, $is_manip, $limit, $offset)
-    {
-        if ($limit > 0
-            && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
-        ) {
-            $query = rtrim($query);
-            if (substr($query, -1) == ';') {
-                $query = substr($query, 0, -1);
-            }
-            if ($is_manip) {
-                $query = $this->_modifyManipQuery($query, $limit);
-            } else {
-                $query.= " LIMIT $limit OFFSET $offset";
-            }
-        }
-        return $query;
-    }
-    
-    // }}}
-    // {{{ _modifyManipQuery()
-    
-    /**
-     * Changes a manip query string for various DBMS specific reasons
-     *
-     * @param string $query  query to modify
-     * @param integer $limit  limit the number of rows
-     * @return string modified query
-     * @access protected
-     */
-    function _modifyManipQuery($query, $limit)
-    {
-        $pos = strpos(strtolower($query), 'where');
-        $where = $pos ? substr($query, $pos) : '';
-
-        $manip_clause = '(\bDELETE\b\s+(?:\*\s+)?\bFROM\b|\bUPDATE\b)';
-        $from_clause  = '([\w\.]+)';
-        $where_clause = '(?:(.*)\bWHERE\b\s+(.*))|(.*)';
-        $pattern = '/^'. $manip_clause . '\s+' . $from_clause .'(?:\s)*(?:'. $where_clause .')?$/i';
-        $matches = preg_match($pattern, $query, $match);
-        if ($matches) {
-            $manip = $match[1];
-            $from  = $match[2];
-            $what  = (count($matches) == 6) ? $match[5] : $match[3];
-            return $manip.' '.$from.' '.$what.' WHERE ctid=(SELECT ctid FROM '.$from.' '.$where.' LIMIT '.$limit.')';
-        }
-        //return error?
-        return $query;
-    }
-
-    // }}}
-    // {{{ getServerVersion()
-
-    /**
-     * return version information about the server
-     *
-     * @param bool   $native  determines if the raw version string should be returned
-     * @return mixed array/string with version information or MDB2 error object
-     * @access public
-     */
-    function getServerVersion($native = false)
-    {
-        $query = 'SHOW SERVER_VERSION';
-        if ($this->connected_server_info) {
-            $server_info = $this->connected_server_info;
-        } else {
-            $server_info = $this->queryOne($query, 'text');
-            if (PEAR::isError($server_info)) {
-                return $server_info;
-            }
-        }
-        // cache server_info
-        $this->connected_server_info = $server_info;
-        if (!$native && !PEAR::isError($server_info)) {
-            $tmp = explode('.', $server_info, 3);
-            if (empty($tmp[2])
-                && isset($tmp[1])
-                && preg_match('/(\d+)(.*)/', $tmp[1], $tmp2)
-            ) {
-                $server_info = array(
-                    'major' => $tmp[0],
-                    'minor' => $tmp2[1],
-                    'patch' => null,
-                    'extra' => $tmp2[2],
-                    'native' => $server_info,
-                );
-            } else {
-                $server_info = array(
-                    'major' => isset($tmp[0]) ? $tmp[0] : null,
-                    'minor' => isset($tmp[1]) ? $tmp[1] : null,
-                    'patch' => isset($tmp[2]) ? $tmp[2] : null,
-                    'extra' => null,
-                    'native' => $server_info,
-                );
-            }
-        }
-        return $server_info;
-    }
-
-    // }}}
-    // {{{ prepare()
-
-    /**
-     * Prepares a query for multiple execution with execute().
-     * With some database backends, this is emulated.
-     * prepare() requires a generic query as string like
-     * 'INSERT INTO numbers VALUES(?,?)' or
-     * 'INSERT INTO numbers VALUES(:foo,:bar)'.
-     * The ? and :name and are placeholders which can be set using
-     * bindParam() and the query can be sent off using the execute() method.
-     * The allowed format for :name can be set with the 'bindname_format' option.
-     *
-     * @param string $query the query to prepare
-     * @param mixed   $types  array that contains the types of the placeholders
-     * @param mixed   $result_types  array that contains the types of the columns in
-     *                        the result set or MDB2_PREPARE_RESULT, if set to
-     *                        MDB2_PREPARE_MANIP the query is handled as a manipulation query
-     * @param mixed   $lobs   key (field) value (parameter) pair for all lob placeholders
-     * @return mixed resource handle for the prepared query on success, a MDB2
-     *        error on failure
-     * @access public
-     * @see bindParam, execute
-     */
-    function prepare($query, $types = null, $result_types = null, $lobs = array())
-    {
-        if ($this->options['emulate_prepared']) {
-            return parent::prepare($query, $types, $result_types, $lobs);
-        }
-        $is_manip = ($result_types === MDB2_PREPARE_MANIP);
-        $offset = $this->offset;
-        $limit = $this->limit;
-        $this->offset = $this->limit = 0;
-        $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
-        if ($result) {
-            if (PEAR::isError($result)) {
-                return $result;
-            }
-            $query = $result;
-        }
-        $pgtypes = function_exists('pg_prepare') ? false : array();
-        if ($pgtypes !== false && !empty($types)) {
-            $this->loadModule('Datatype', null, true);
-        }
-        $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
-        $placeholder_type_guess = $placeholder_type = null;
-        $question = '?';
-        $colon = ':';
-        $positions = array();
-        $position = $parameter = 0;
-        while ($position < strlen($query)) {
-            $q_position = strpos($query, $question, $position);
-            $c_position = strpos($query, $colon, $position);
-            //skip "::type" cast ("select id::varchar(20) from sometable where name=?")
-            $doublecolon_position = strpos($query, '::', $position);
-            if ($doublecolon_position !== false && $doublecolon_position == $c_position) {
-                $c_position = strpos($query, $colon, $position+2);
-            }
-            if ($q_position && $c_position) {
-                $p_position = min($q_position, $c_position);
-            } elseif ($q_position) {
-                $p_position = $q_position;
-            } elseif ($c_position) {
-                $p_position = $c_position;
-            } else {
-                break;
-            }
-            if (null === $placeholder_type) {
-                $placeholder_type_guess = $query[$p_position];
-            }
-            
-            $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position);
-            if (PEAR::isError($new_pos)) {
-                return $new_pos;
-            }
-            if ($new_pos != $position) {
-                $position = $new_pos;
-                continue; //evaluate again starting from the new position
-            }
-
-            if ($query[$position] == $placeholder_type_guess) {
-                if (null === $placeholder_type) {
-                    $placeholder_type = $query[$p_position];
-                    $question = $colon = $placeholder_type;
-                    if (!empty($types) && is_array($types)) {
-                        if ($placeholder_type == ':') {
-                        } else {
-                            $types = array_values($types);
-                        }
-                    }
-                }
-                if ($placeholder_type_guess == '?') {
-                    $length = 1;
-                    $name = $parameter;
-                } else {
-                    $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
-                    $param = preg_replace($regexp, '\\1', $query);
-                    if ($param === '') {
-                        $err = $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
-                            'named parameter name must match "bindname_format" option', __FUNCTION__);
-                        return $err;
-                    }
-                    $length = strlen($param) + 1;
-                    $name = $param;
-                }
-                if ($pgtypes !== false) {
-                    if (is_array($types) && array_key_exists($name, $types)) {
-                        $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$name]);
-                    } elseif (is_array($types) && array_key_exists($parameter, $types)) {
-                        $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$parameter]);
-                    } else {
-                        $pgtypes[] = 'text';
-                    }
-                }
-                if (($key_parameter = array_search($name, $positions))) {
-                    $next_parameter = 1;
-                    foreach ($positions as $key => $value) {
-                        if ($key_parameter == $key) {
-                            break;
-                        }
-                        ++$next_parameter;
-                    }
-                } else {
-                    ++$parameter;
-                    $next_parameter = $parameter;
-                    $positions[] = $name;
-                }
-                $query = substr_replace($query, '$'.$parameter, $position, $length);
-                $position = $p_position + strlen($parameter);
-            } else {
-                $position = $p_position;
-            }
-        }
-        $connection = $this->getConnection();
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-        static $prep_statement_counter = 1;
-        $statement_name = sprintf($this->options['statement_format'], $this->phptype, $prep_statement_counter++ . sha1(microtime() + mt_rand()));
-        $statement_name = substr(strtolower($statement_name), 0, $this->options['max_identifiers_length']);
-        if (false === $pgtypes) {
-            $result = @pg_prepare($connection, $statement_name, $query);
-            if (!$result) {
-                $err = $this->raiseError(null, null, null,
-                    'Unable to create prepared statement handle', __FUNCTION__);
-                return $err;
-            }
-        } else {
-            $types_string = '';
-            if ($pgtypes) {
-                $types_string = ' ('.implode(', ', $pgtypes).') ';
-            }
-            $query = 'PREPARE '.$statement_name.$types_string.' AS '.$query;
-            $statement = $this->_doQuery($query, true, $connection);
-            if (PEAR::isError($statement)) {
-                return $statement;
-            }
-        }
-
-        $class_name = 'MDB2_Statement_'.$this->phptype;
-        $obj = new $class_name($this, $statement_name, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
-        $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
-        return $obj;
-    }
-
-    // }}}
-    // {{{ function getSequenceName($sqn)
-
-    /**
-     * adds sequence name formatting to a sequence name
-     *
-     * @param   string  name of the sequence
-     *
-     * @return  string  formatted sequence name
-     *
-     * @access  public
-     */
-    function getSequenceName($sqn)
-    {
-        if (false === $this->options['disable_smart_seqname']) {
-            if (strpos($sqn, '_') !== false) {
-                list($table, $field) = explode('_', $sqn, 2);
-            }
-            $schema_list = $this->queryOne("SELECT array_to_string(current_schemas(false), ',')");
-            if (PEAR::isError($schema_list) || empty($schema_list) || count($schema_list) < 2) {
-                $order_by = ' a.attnum';
-                $schema_clause = ' AND n.nspname=current_schema()';
-            } else {
-                $schemas = explode(',', $schema_list);
-                $schema_clause = ' AND n.nspname IN ('.$schema_list.')';
-                $counter = 1;
-                $order_by = ' CASE ';
-                foreach ($schemas as $schema) {
-                    $order_by .= ' WHEN n.nspname='.$schema.' THEN '.$counter++;
-                }
-                $order_by .= ' ELSE '.$counter.' END, a.attnum';
-            }
-
-            $query = "SELECT substring((SELECT substring(pg_get_expr(d.adbin, d.adrelid) for 128)
-                    	    FROM pg_attrdef d
-                    	   WHERE d.adrelid = a.attrelid
-                    	     AND d.adnum = a.attnum
-                    	     AND a.atthasdef
-                    	 ) FROM 'nextval[^'']*''([^'']*)')
-                        FROM pg_attribute a
-                    LEFT JOIN pg_class c ON c.oid = a.attrelid
-                    LEFT JOIN pg_attrdef d ON d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef
-                    LEFT JOIN pg_namespace n ON c.relnamespace = n.oid
-                       WHERE (c.relname = ".$this->quote($sqn, 'text');
-            if (!empty($field)) {
-                $query .= " OR (c.relname = ".$this->quote($table, 'text')." AND a.attname = ".$this->quote($field, 'text').")";
-            }
-            $query .= "      )"
-                         .$schema_clause."
-                         AND NOT a.attisdropped
-                         AND a.attnum > 0
-                         AND pg_get_expr(d.adbin, d.adrelid) LIKE 'nextval%'
-                    ORDER BY ".$order_by;
-            $seqname = $this->queryOne($query);
-            if (!PEAR::isError($seqname) && !empty($seqname) && is_string($seqname)) {
-                return $seqname;
-            }
-        }
-
-        return parent::getSequenceName($sqn);
-    }
-
-    // }}}
-    // {{{ nextID()
-
-    /**
-     * Returns the next free id of a sequence
-     *
-     * @param string $seq_name name of the sequence
-     * @param boolean $ondemand when true the sequence is
-     *                          automatic created, if it
-     *                          not exists
-     * @return mixed MDB2 Error Object or id
-     * @access public
-     */
-    function nextID($seq_name, $ondemand = true)
-    {
-        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
-        $query = "SELECT NEXTVAL('$sequence_name')";
-        $this->pushErrorHandling(PEAR_ERROR_RETURN);
-        $this->expectError(MDB2_ERROR_NOSUCHTABLE);
-        $result = $this->queryOne($query, 'integer');
-        $this->popExpect();
-        $this->popErrorHandling();
-        if (PEAR::isError($result)) {
-            if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
-                $this->loadModule('Manager', null, true);
-                $result = $this->manager->createSequence($seq_name);
-                if (PEAR::isError($result)) {
-                    return $this->raiseError($result, null, null,
-                        'on demand sequence could not be created', __FUNCTION__);
-                }
-                return $this->nextId($seq_name, false);
-            }
-        }
-        return $result;
-    }
-
-    // }}}
-    // {{{ lastInsertID()
-
-    /**
-     * Returns the autoincrement ID if supported or $id or fetches the current
-     * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
-     *
-     * @param string $table name of the table into which a new row was inserted
-     * @param string $field name of the field into which a new row was inserted
-     * @return mixed MDB2 Error Object or id
-     * @access public
-     */
-    function lastInsertID($table = null, $field = null)
-    {
-        if (empty($table) && empty($field)) {
-            return $this->queryOne('SELECT lastval()', 'integer');
-        }
-        $seq = $table.(empty($field) ? '' : '_'.$field);
-        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq), true);
-        return $this->queryOne("SELECT currval('$sequence_name')", 'integer');
-    }
-
-    // }}}
-    // {{{ currID()
-
-    /**
-     * Returns the current id of a sequence
-     *
-     * @param string $seq_name name of the sequence
-     * @return mixed MDB2 Error Object or id
-     * @access public
-     */
-    function currID($seq_name)
-    {
-        $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
-        return $this->queryOne("SELECT last_value FROM $sequence_name", 'integer');
-    }
-}
-
-/**
- * MDB2 PostGreSQL result driver
- *
- * @package MDB2
- * @category Database
- * @author  Paul Cooper <pgc@ucecom.com>
- */
-class MDB2_Result_pgsql extends MDB2_Result_Common
-{
-    // }}}
-    // {{{ fetchRow()
-
-    /**
-     * Fetch a row and insert the data into an existing array.
-     *
-     * @param int       $fetchmode  how the array data should be indexed
-     * @param int    $rownum    number of the row where the data can be found
-     * @return int data array on success, a MDB2 error on failure
-     * @access public
-     */
-    function fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
-    {
-        if (null !== $rownum) {
-            $seek = $this->seek($rownum);
-            if (PEAR::isError($seek)) {
-                return $seek;
-            }
-        }
-        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
-            $fetchmode = $this->db->fetchmode;
-        }
-        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
-            $row = @pg_fetch_array($this->result, null, PGSQL_ASSOC);
-            if (is_array($row)
-                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
-            ) {
-                $row = array_change_key_case($row, $this->db->options['field_case']);
-            }
-        } else {
-            $row = @pg_fetch_row($this->result);
-        }
-        if (!$row) {
-            if (false === $this->result) {
-                $err = $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
-                    'resultset has already been freed', __FUNCTION__);
-                return $err;
-            }
-            return null;
-        }
-        $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
-        $rtrim = false;
-        if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
-            if (empty($this->types)) {
-                $mode += MDB2_PORTABILITY_RTRIM;
-            } else {
-                $rtrim = true;
-            }
-        }
-        if ($mode) {
-            $this->db->_fixResultArrayValues($row, $mode);
-        }
-        if (!empty($this->types)) {
-            $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
-        }
-        if (!empty($this->values)) {
-            $this->_assignBindColumns($row);
-        }
-        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
-            $object_class = $this->db->options['fetch_class'];
-            if ($object_class == 'stdClass') {
-                $row = (object) $row;
-            } else {
-                $rowObj = new $object_class($row);
-                $row = $rowObj;
-            }
-        }
-        ++$this->rownum;
-        return $row;
-    }
-
-    // }}}
-    // {{{ _getColumnNames()
-
-    /**
-     * Retrieve the names of columns returned by the DBMS in a query result.
-     *
-     * @return  mixed   Array variable that holds the names of columns as keys
-     *                  or an MDB2 error on failure.
-     *                  Some DBMS may not return any columns when the result set
-     *                  does not contain any rows.
-     * @access private
-     */
-    function _getColumnNames()
-    {
-        $columns = array();
-        $numcols = $this->numCols();
-        if (PEAR::isError($numcols)) {
-            return $numcols;
-        }
-        for ($column = 0; $column < $numcols; $column++) {
-            $column_name = @pg_field_name($this->result, $column);
-            $columns[$column_name] = $column;
-        }
-        if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
-            $columns = array_change_key_case($columns, $this->db->options['field_case']);
-        }
-        return $columns;
-    }
-
-    // }}}
-    // {{{ numCols()
-
-    /**
-     * Count the number of columns returned by the DBMS in a query result.
-     *
-     * @access public
-     * @return mixed integer value with the number of columns, a MDB2 error
-     *                       on failure
-     */
-    function numCols()
-    {
-        $cols = @pg_num_fields($this->result);
-        if (null === $cols) {
-            if (false === $this->result) {
-                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
-                    'resultset has already been freed', __FUNCTION__);
-            }
-            if (null === $this->result) {
-                return count($this->types);
-            }
-            return $this->db->raiseError(null, null, null,
-                'Could not get column count', __FUNCTION__);
-        }
-        return $cols;
-    }
-
-    // }}}
-    // {{{ nextResult()
-
-    /**
-     * Move the internal result pointer to the next available result
-     *
-     * @return true on success, false if there is no more result set or an error object on failure
-     * @access public
-     */
-    function nextResult()
-    {
-        $connection = $this->db->getConnection();
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-
-        if (!($this->result = @pg_get_result($connection))) {
-            return false;
-        }
-        return MDB2_OK;
-    }
-
-    // }}}
-    // {{{ free()
-
-    /**
-     * Free the internal resources associated with result.
-     *
-     * @return boolean true on success, false if result is invalid
-     * @access public
-     */
-    function free()
-    {
-        if (is_resource($this->result) && $this->db->connection) {
-            $free = @pg_free_result($this->result);
-            if (false === $free) {
-                return $this->db->raiseError(null, null, null,
-                    'Could not free result', __FUNCTION__);
-            }
-        }
-        $this->result = false;
-        return MDB2_OK;
-    }
-}
-
-/**
- * MDB2 PostGreSQL buffered result driver
- *
- * @package MDB2
- * @category Database
- * @author  Paul Cooper <pgc@ucecom.com>
- */
-class MDB2_BufferedResult_pgsql extends MDB2_Result_pgsql
-{
-    // {{{ seek()
-
-    /**
-     * Seek to a specific row in a result set
-     *
-     * @param int    $rownum    number of the row where the data can be found
-     * @return mixed MDB2_OK on success, a MDB2 error on failure
-     * @access public
-     */
-    function seek($rownum = 0)
-    {
-        if ($this->rownum != ($rownum - 1) && !@pg_result_seek($this->result, $rownum)) {
-            if (false === $this->result) {
-                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
-                    'resultset has already been freed', __FUNCTION__);
-            }
-            if (null === $this->result) {
-                return MDB2_OK;
-            }
-            return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
-                'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
-        }
-        $this->rownum = $rownum - 1;
-        return MDB2_OK;
-    }
-
-    // }}}
-    // {{{ valid()
-
-    /**
-     * Check if the end of the result set has been reached
-     *
-     * @return mixed true or false on sucess, a MDB2 error on failure
-     * @access public
-     */
-    function valid()
-    {
-        $numrows = $this->numRows();
-        if (PEAR::isError($numrows)) {
-            return $numrows;
-        }
-        return $this->rownum < ($numrows - 1);
-    }
-
-    // }}}
-    // {{{ numRows()
-
-    /**
-     * Returns the number of rows in a result object
-     *
-     * @return mixed MDB2 Error Object or the number of rows
-     * @access public
-     */
-    function numRows()
-    {
-        $rows = @pg_num_rows($this->result);
-        if (null === $rows) {
-            if (false === $this->result) {
-                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
-                    'resultset has already been freed', __FUNCTION__);
-            }
-            if (null === $this->result) {
-                return 0;
-            }
-            return $this->db->raiseError(null, null, null,
-                'Could not get row count', __FUNCTION__);
-        }
-        return $rows;
-    }
-}
-
-/**
- * MDB2 PostGreSQL statement driver
- *
- * @package MDB2
- * @category Database
- * @author  Paul Cooper <pgc@ucecom.com>
- */
-class MDB2_Statement_pgsql extends MDB2_Statement_Common
-{
-    // {{{ _execute()
-
-    /**
-     * Execute a prepared query statement helper method.
-     *
-     * @param mixed $result_class string which specifies which result class to use
-     * @param mixed $result_wrap_class string which specifies which class to wrap results in
-     *
-     * @return mixed MDB2_Result or integer (affected rows) on success,
-     *               a MDB2 error on failure
-     * @access private
-     */
-    function _execute($result_class = true, $result_wrap_class = false)
-    {
-        if (null === $this->statement) {
-            return parent::_execute($result_class, $result_wrap_class);
-        }
-        $this->db->last_query = $this->query;
-        $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values));
-        if ($this->db->getOption('disable_query')) {
-            $result = $this->is_manip ? 0 : null;
-            return $result;
-        }
-
-        $connection = $this->db->getConnection();
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-
-        $query = false;
-        $parameters = array();
-        // todo: disabled until pg_execute() bytea issues are cleared up
-        if (true || !function_exists('pg_execute')) {
-            $query = 'EXECUTE '.$this->statement;
-        }
-        if (!empty($this->positions)) {
-            foreach ($this->positions as $parameter) {
-                if (!array_key_exists($parameter, $this->values)) {
-                    return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
-                        'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
-                }
-                $value = $this->values[$parameter];
-                $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
-                if (is_resource($value) || $type == 'clob' || $type == 'blob' || $this->db->options['lob_allow_url_include']) {
-                    if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
-                        if ($match[1] == 'file://') {
-                            $value = $match[2];
-                        }
-                        $value = @fopen($value, 'r');
-                        $close = true;
-                    }
-                    if (is_resource($value)) {
-                        $data = '';
-                        while (!@feof($value)) {
-                            $data.= @fread($value, $this->db->options['lob_buffer_length']);
-                        }
-                        if ($close) {
-                            @fclose($value);
-                        }
-                        $value = $data;
-                    }
-                }
-                $quoted = $this->db->quote($value, $type, $query);
-                if (PEAR::isError($quoted)) {
-                    return $quoted;
-                }
-                $parameters[] = $quoted;
-            }
-            if ($query) {
-                $query.= ' ('.implode(', ', $parameters).')';
-            }
-        }
-
-        if (!$query) {
-            $result = @pg_execute($connection, $this->statement, $parameters);
-            if (!$result) {
-                $err = $this->db->raiseError(null, null, null,
-                    'Unable to execute statement', __FUNCTION__);
-                return $err;
-            }
-        } else {
-            $result = $this->db->_doQuery($query, $this->is_manip, $connection);
-            if (PEAR::isError($result)) {
-                return $result;
-            }
-        }
-
-        if ($this->is_manip) {
-            $affected_rows = $this->db->_affectedRows($connection, $result);
-            return $affected_rows;
-        }
-
-        $result = $this->db->_wrapResult($result, $this->result_types,
-            $result_class, $result_wrap_class, $this->limit, $this->offset);
-        $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result));
-        return $result;
-    }
-
-    // }}}
-    // {{{ free()
-
-    /**
-     * Release resources allocated for the specified prepared query.
-     *
-     * @return mixed MDB2_OK on success, a MDB2 error on failure
-     * @access public
-     */
-    function free()
-    {
-        if (null === $this->positions) {
-            return $this->db->raiseError(MDB2_ERROR, null, null,
-                'Prepared statement has already been freed', __FUNCTION__);
-        }
-        $result = MDB2_OK;
-
-        if (null !== $this->statement) {
-            $connection = $this->db->getConnection();
-            if (PEAR::isError($connection)) {
-                return $connection;
-            }
-            $query = 'DEALLOCATE PREPARE '.$this->statement;
-            $result = $this->db->_doQuery($query, true, $connection);
-        }
-
-        parent::free();
-        return $result;
-    }
-}
-?>
\ No newline at end of file