Merge branch 'pdo'

Conflicts:
	CHANGELOG

1 files changed, 0 insertions, 1709 deletions

diff --git a/program/lib/MDB2/Driver/mysql.php b/program/lib/MDB2/Driver/mysql.php
deleted file mode 100644
index 790bb6faa..000000000
--- a/program/lib/MDB2/Driver/mysql.php
+++ /dev/null
@@ -1,1709 +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: Lukas Smith <smith@pooteeweet.org>                           |
-// +----------------------------------------------------------------------+
-//
-// $Id: mysql.php 295587 2010-02-28 17:16:38Z quipo $
-//
-
-/**
- * MDB2 MySQL driver
- *
- * @package MDB2
- * @category Database
- * @author  Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Driver_mysql extends MDB2_Driver_Common
-{
-    // {{{ properties
-
-    var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => '\\', 'escape_pattern' => '\\');
-
-    var $identifier_quoting = array('start' => '`', 'end' => '`', 'escape' => '`');
-
-    var $sql_comments = array(
-        array('start' => '-- ', 'end' => "\n", 'escape' => false),
-        array('start' => '#', 'end' => "\n", 'escape' => false),
-        array('start' => '/*', 'end' => '*/', 'escape' => false),
-    );
-
-    var $server_capabilities_checked = false;
-
-    var $start_transaction = false;
-
-    var $varchar_max_length = 255;
-
-    // }}}
-    // {{{ constructor
-
-    /**
-     * Constructor
-     */
-    function __construct()
-    {
-        parent::__construct();
-
-        $this->phptype = 'mysql';
-        $this->dbsyntax = 'mysql';
-
-        $this->supported['sequences'] = 'emulated';
-        $this->supported['indexes'] = true;
-        $this->supported['affected_rows'] = true;
-        $this->supported['transactions'] = false;
-        $this->supported['savepoints'] = false;
-        $this->supported['summary_functions'] = true;
-        $this->supported['order_by_text'] = true;
-        $this->supported['current_id'] = 'emulated';
-        $this->supported['limit_queries'] = true;
-        $this->supported['LOBs'] = true;
-        $this->supported['replace'] = true;
-        $this->supported['sub_selects'] = 'emulated';
-        $this->supported['triggers'] = false;
-        $this->supported['auto_increment'] = true;
-        $this->supported['primary_key'] = true;
-        $this->supported['result_introspection'] = true;
-        $this->supported['prepared_statements'] = 'emulated';
-        $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['default_table_type'] = '';
-        $this->options['max_identifiers_length'] = 64;
-
-        $this->_reCheckSupportedOptions();
-    }
-
-    // }}}
-    // {{{ _reCheckSupportedOptions()
-    
-    /**
-     * If the user changes certain options, other capabilities may depend
-     * on the new settings, so we need to check them (again).
-     *
-     * @access private
-     */
-    function _reCheckSupportedOptions()
-    {
-        $this->supported['transactions'] = $this->options['use_transactions'];
-        $this->supported['savepoints']   = $this->options['use_transactions'];
-        if ($this->options['default_table_type']) {
-            switch (strtoupper($this->options['default_table_type'])) {
-            case 'BLACKHOLE':
-            case 'MEMORY':
-            case 'ARCHIVE':
-            case 'CSV':
-            case 'HEAP':
-            case 'ISAM':
-            case 'MERGE':
-            case 'MRG_ISAM':
-            case 'ISAM':
-            case 'MRG_MYISAM':
-            case 'MYISAM':
-                $this->supported['savepoints']   = false;
-                $this->supported['transactions'] = false;
-                $this->warnings[] = $this->options['default_table_type'] .
-                    ' is not a supported default table type';
-                break;
-            }
-        }
-    }
-
-    // }}}
-    // {{{ function setOption($option, $value)
-
-    /**
-     * set the option for the db class
-     *
-     * @param   string  option name
-     * @param   mixed   value for the option
-     *
-     * @return  mixed   MDB2_OK or MDB2 Error Object
-     *
-     * @access  public
-     */
-    function setOption($option, $value)
-    {
-        $res = parent::setOption($option, $value);
-        $this->_reCheckSupportedOptions();
-    }
-
-    // }}}
-    // {{{ errorInfo()
-
-    /**
-     * This method is used to collect information about an error
-     *
-     * @param integer $error
-     * @return array
-     * @access public
-     */
-    function errorInfo($error = null)
-    {
-        if ($this->connection) {
-            $native_code = @mysql_errno($this->connection);
-            $native_msg  = @mysql_error($this->connection);
-        } else {
-            $native_code = @mysql_errno();
-            $native_msg  = @mysql_error();
-        }
-        if (is_null($error)) {
-            static $ecode_map;
-            if (empty($ecode_map)) {
-                $ecode_map = array(
-                    1000 => MDB2_ERROR_INVALID, //hashchk
-                    1001 => MDB2_ERROR_INVALID, //isamchk
-                    1004 => MDB2_ERROR_CANNOT_CREATE,
-                    1005 => MDB2_ERROR_CANNOT_CREATE,
-                    1006 => MDB2_ERROR_CANNOT_CREATE,
-                    1007 => MDB2_ERROR_ALREADY_EXISTS,
-                    1008 => MDB2_ERROR_CANNOT_DROP,
-                    1009 => MDB2_ERROR_CANNOT_DROP,
-                    1010 => MDB2_ERROR_CANNOT_DROP,
-                    1011 => MDB2_ERROR_CANNOT_DELETE,
-                    1022 => MDB2_ERROR_ALREADY_EXISTS,
-                    1029 => MDB2_ERROR_NOT_FOUND,
-                    1032 => MDB2_ERROR_NOT_FOUND,
-                    1044 => MDB2_ERROR_ACCESS_VIOLATION,
-                    1045 => MDB2_ERROR_ACCESS_VIOLATION,
-                    1046 => MDB2_ERROR_NODBSELECTED,
-                    1048 => MDB2_ERROR_CONSTRAINT,
-                    1049 => MDB2_ERROR_NOSUCHDB,
-                    1050 => MDB2_ERROR_ALREADY_EXISTS,
-                    1051 => MDB2_ERROR_NOSUCHTABLE,
-                    1054 => MDB2_ERROR_NOSUCHFIELD,
-                    1060 => MDB2_ERROR_ALREADY_EXISTS,
-                    1061 => MDB2_ERROR_ALREADY_EXISTS,
-                    1062 => MDB2_ERROR_ALREADY_EXISTS,
-                    1064 => MDB2_ERROR_SYNTAX,
-                    1067 => MDB2_ERROR_INVALID,
-                    1072 => MDB2_ERROR_NOT_FOUND,
-                    1086 => MDB2_ERROR_ALREADY_EXISTS,
-                    1091 => MDB2_ERROR_NOT_FOUND,
-                    1100 => MDB2_ERROR_NOT_LOCKED,
-                    1109 => MDB2_ERROR_NOT_FOUND,
-                    1125 => MDB2_ERROR_ALREADY_EXISTS,
-                    1136 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
-                    1138 => MDB2_ERROR_INVALID,
-                    1142 => MDB2_ERROR_ACCESS_VIOLATION,
-                    1143 => MDB2_ERROR_ACCESS_VIOLATION,
-                    1146 => MDB2_ERROR_NOSUCHTABLE,
-                    1149 => MDB2_ERROR_SYNTAX,
-                    1169 => MDB2_ERROR_CONSTRAINT,
-                    1176 => MDB2_ERROR_NOT_FOUND,
-                    1177 => MDB2_ERROR_NOSUCHTABLE,
-                    1213 => MDB2_ERROR_DEADLOCK,
-                    1216 => MDB2_ERROR_CONSTRAINT,
-                    1217 => MDB2_ERROR_CONSTRAINT,
-                    1227 => MDB2_ERROR_ACCESS_VIOLATION,
-                    1235 => MDB2_ERROR_CANNOT_CREATE,
-                    1299 => MDB2_ERROR_INVALID_DATE,
-                    1300 => MDB2_ERROR_INVALID,
-                    1304 => MDB2_ERROR_ALREADY_EXISTS,
-                    1305 => MDB2_ERROR_NOT_FOUND,
-                    1306 => MDB2_ERROR_CANNOT_DROP,
-                    1307 => MDB2_ERROR_CANNOT_CREATE,
-                    1334 => MDB2_ERROR_CANNOT_ALTER,
-                    1339 => MDB2_ERROR_NOT_FOUND,
-                    1356 => MDB2_ERROR_INVALID,
-                    1359 => MDB2_ERROR_ALREADY_EXISTS,
-                    1360 => MDB2_ERROR_NOT_FOUND,
-                    1363 => MDB2_ERROR_NOT_FOUND,
-                    1365 => MDB2_ERROR_DIVZERO,
-                    1451 => MDB2_ERROR_CONSTRAINT,
-                    1452 => MDB2_ERROR_CONSTRAINT,
-                    1542 => MDB2_ERROR_CANNOT_DROP,
-                    1546 => MDB2_ERROR_CONSTRAINT,
-                    1582 => MDB2_ERROR_CONSTRAINT,
-                    2003 => MDB2_ERROR_CONNECT_FAILED,
-                    2019 => MDB2_ERROR_INVALID,
-                );
-            }
-            if ($this->options['portability'] & MDB2_PORTABILITY_ERRORS) {
-                $ecode_map[1022] = MDB2_ERROR_CONSTRAINT;
-                $ecode_map[1048] = MDB2_ERROR_CONSTRAINT_NOT_NULL;
-                $ecode_map[1062] = MDB2_ERROR_CONSTRAINT;
-            } else {
-                // Doing this in case mode changes during runtime.
-                $ecode_map[1022] = MDB2_ERROR_ALREADY_EXISTS;
-                $ecode_map[1048] = MDB2_ERROR_CONSTRAINT;
-                $ecode_map[1062] = MDB2_ERROR_ALREADY_EXISTS;
-            }
-            if (isset($ecode_map[$native_code])) {
-                $error = $ecode_map[$native_code];
-            }
-        }
-        return array($error, $native_code, $native_msg);
-    }
-
-    // }}}
-    // {{{ escape()
-
-    /**
-     * Quotes a string so it can be safely used in a query. It will quote
-     * the text so it can safely be used within a query.
-     *
-     * @param   string  the input string to quote
-     * @param   bool    escape wildcards
-     *
-     * @return  string  quoted string
-     *
-     * @access  public
-     */
-    function escape($text, $escape_wildcards = false)
-    {
-        if ($escape_wildcards) {
-            $text = $this->escapePattern($text);
-        }
-        $connection = $this->getConnection();
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-        $text = @mysql_real_escape_string($text, $connection);
-        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));
-        $this->_getServerCapabilities();
-        if (!is_null($savepoint)) {
-            if (!$this->supports('savepoints')) {
-                return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
-                    'savepoints are not supported', __FUNCTION__);
-            }
-            if (!$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);
-        } elseif ($this->in_transaction) {
-            return MDB2_OK;  //nothing to do
-        }
-        if (!$this->destructor_registered && $this->opened_persistent) {
-            $this->destructor_registered = true;
-            register_shutdown_function('MDB2_closeOpenTransactions');
-        }
-        $query = $this->start_transaction ? 'START TRANSACTION' : 'SET AUTOCOMMIT = 0';
-        $result = $this->_doQuery($query, 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 $this->raiseError(MDB2_ERROR_INVALID, null, null,
-                'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
-        }
-        if (!is_null($savepoint)) {
-            if (!$this->supports('savepoints')) {
-                return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
-                    'savepoints are not supported', __FUNCTION__);
-            }
-            $server_info = $this->getServerVersion();
-            if (version_compare($server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'], '5.0.3', '<')) {
-                return MDB2_OK;
-            }
-            $query = 'RELEASE SAVEPOINT '.$savepoint;
-            return $this->_doQuery($query, true);
-        }
-
-        if (!$this->supports('transactions')) {
-            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
-                'transactions are not supported', __FUNCTION__);
-        }
-
-        $result = $this->_doQuery('COMMIT', true);
-        if (PEAR::isError($result)) {
-            return $result;
-        }
-        if (!$this->start_transaction) {
-            $query = 'SET AUTOCOMMIT = 1';
-            $result = $this->_doQuery($query, 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 $this->raiseError(MDB2_ERROR_INVALID, null, null,
-                'rollback cannot be done changes are auto committed', __FUNCTION__);
-        }
-        if (!is_null($savepoint)) {
-            if (!$this->supports('savepoints')) {
-                return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
-                    'savepoints are not supported', __FUNCTION__);
-            }
-            $query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
-            return $this->_doQuery($query, true);
-        }
-
-        $query = 'ROLLBACK';
-        $result = $this->_doQuery($query, true);
-        if (PEAR::isError($result)) {
-            return $result;
-        }
-        if (!$this->start_transaction) {
-            $query = 'SET AUTOCOMMIT = 1';
-            $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())
-    {
-        $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
-        if (!$this->supports('transactions')) {
-            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
-                'transactions are not supported', __FUNCTION__);
-        }
-        switch ($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 TRANSACTION ISOLATION LEVEL $isolation";
-        return $this->_doQuery($query, true);
-    }
-
-    // }}}
-    // {{{ _doConnect()
-
-    /**
-     * do the grunt work of the connect
-     *
-     * @return connection on success or MDB2 Error Object on failure
-     * @access protected
-     */
-    function _doConnect($username, $password, $persistent = false)
-    {
-        if (!PEAR::loadExtension($this->phptype)) {
-            return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
-                'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
-        }
-
-        $params = array();
-        $unix = ($this->dsn['protocol'] && $this->dsn['protocol'] == 'unix');
-        if (empty($this->dsn['hostspec'])) {
-            $this->dsn['hostspec'] = $unix ? '' : 'localhost';
-        }
-        if ($this->dsn['hostspec']) {
-            $params[0] = $this->dsn['hostspec'] . ($this->dsn['port'] ? ':' . $this->dsn['port'] : '');
-        } else {
-            $params[0] = ':' . $this->dsn['socket'];
-        }
-        $params[] = $username ? $username : null;
-        $params[] = $password ? $password : null;
-        if (!$persistent) {
-            if ($this->_isNewLinkSet()) {
-                $params[] = true;
-            } else {
-                $params[] = false;
-            }
-        }
-        if (version_compare(phpversion(), '4.3.0', '>=')) {
-            $params[] = isset($this->dsn['client_flags'])
-                ? $this->dsn['client_flags'] : null;
-        }
-        $connect_function = $persistent ? 'mysql_pconnect' : 'mysql_connect';
-
-        $connection = @call_user_func_array($connect_function, $params);
-        if (!$connection) {
-            if (($err = @mysql_error()) != '') {
-                return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
-                    $err, __FUNCTION__);
-            } else {
-                return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
-                    'unable to establish a connection', __FUNCTION__);
-            }
-        }
-
-        if (!empty($this->dsn['charset'])) {
-            $result = $this->setCharset($this->dsn['charset'], $connection);
-            if (PEAR::isError($result)) {
-                $this->disconnect(false);
-                return $result;
-            }
-        }
-
-        return $connection;
-    }
-
-    // }}}
-    // {{{ connect()
-
-    /**
-     * Connect to the database
-     *
-     * @return MDB2_OK on success, MDB2 Error Object on failure
-     * @access public
-     */
-    function connect()
-    {
-        if (is_resource($this->connection)) {
-            //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
-            if (MDB2::areEquals($this->connected_dsn, $this->dsn)
-                && $this->opened_persistent == $this->options['persistent']
-            ) {
-                return MDB2_OK;
-            }
-            $this->disconnect(false);
-        }
-
-        $connection = $this->_doConnect(
-            $this->dsn['username'],
-            $this->dsn['password'],
-            $this->options['persistent']
-        );
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-
-        $this->connection = $connection;
-        $this->connected_dsn = $this->dsn;
-        $this->connected_database_name = '';
-        $this->opened_persistent = $this->options['persistent'];
-        $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
-
-        if ($this->database_name) {
-            if ($this->database_name != $this->connected_database_name) {
-                if (!@mysql_select_db($this->database_name, $connection)) {
-                    $err = $this->raiseError(null, null, null,
-                        'Could not select the database: '.$this->database_name, __FUNCTION__);
-                    return $err;
-                }
-                $this->connected_database_name = $this->database_name;
-            }
-        }
-
-        $this->_getServerCapabilities();
-
-        return MDB2_OK;
-    }
-
-    // }}}
-    // {{{ setCharset()
-
-    /**
-     * Set the charset on the current connection
-     *
-     * @param string    charset (or array(charset, collation))
-     * @param resource  connection handle
-     *
-     * @return true on success, MDB2 Error Object on failure
-     */
-    function setCharset($charset, $connection = null)
-    {
-        if (is_null($connection)) {
-            $connection = $this->getConnection();
-            if (PEAR::isError($connection)) {
-                return $connection;
-            }
-        }
-        $collation = null;
-        if (is_array($charset) && 2 == count($charset)) {
-            $collation = array_pop($charset);
-            $charset   = array_pop($charset);
-        }
-        $client_info = mysql_get_client_info();
-        if (function_exists('mysql_set_charset') && version_compare($client_info, '5.0.6')) {
-            if (!$result = mysql_set_charset($charset, $connection)) {
-                $err = $this->raiseError(null, null, null,
-                    'Could not set client character set', __FUNCTION__);
-                return $err;
-            }
-            return $result;
-        }
-        $query = "SET NAMES '".mysql_real_escape_string($charset, $connection)."'";
-        if (!is_null($collation)) {
-            $query .= " COLLATE '".mysql_real_escape_string($collation, $connection)."'";
-        }
-        return $this->_doQuery($query, true, $connection);
-    }
-
-    // }}}
-    // {{{ 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)
-    {
-        $connection = $this->_doConnect($this->dsn['username'],
-                                        $this->dsn['password'],
-                                        $this->options['persistent']);
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-
-        $result = @mysql_select_db($name, $connection);
-        @mysql_close($connection);
-
-        return $result;
-    }
-
-    // }}}
-    // {{{ 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) {
-                $ok = @mysql_close($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, $this->options['persistent']);
-        if (PEAR::isError($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)) {
-            $result = $this->_affectedRows($connection, $result);
-        }
-
-        @mysql_close($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 $result;
-        }
-
-        if (is_null($connection)) {
-            $connection = $this->getConnection();
-            if (PEAR::isError($connection)) {
-                return $connection;
-            }
-        }
-        if (is_null($database_name)) {
-            $database_name = $this->database_name;
-        }
-
-        if ($database_name) {
-            if ($database_name != $this->connected_database_name) {
-                if (!@mysql_select_db($database_name, $connection)) {
-                    $err = $this->raiseError(null, null, null,
-                        'Could not select the database: '.$database_name, __FUNCTION__);
-                    return $err;
-                }
-                $this->connected_database_name = $database_name;
-            }
-        }
-
-        $function = $this->options['result_buffering']
-            ? 'mysql_query' : 'mysql_unbuffered_query';
-        $result = @$function($query, $connection);
-        if (!$result && 0 !== mysql_errno($connection)) {
-            $err = $this->raiseError(null, null, null,
-                'Could not execute statement', __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, $result = null)
-    {
-        if (is_null($connection)) {
-            $connection = $this->getConnection();
-            if (PEAR::isError($connection)) {
-                return $connection;
-            }
-        }
-        return @mysql_affected_rows($connection);
-    }
-
-    // }}}
-    // {{{ _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, $offset)
-    {
-        if ($this->options['portability'] & MDB2_PORTABILITY_DELETE_COUNT) {
-            // "DELETE FROM table" gives 0 affected rows in MySQL.
-            // This little hack lets you know how many rows were deleted.
-            if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
-                $query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
-                                      'DELETE FROM \1 WHERE 1=1', $query);
-            }
-        }
-        if ($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);
-            }
-
-            // LIMIT doesn't always come last in the query
-            // @see http://dev.mysql.com/doc/refman/5.0/en/select.html
-            $after = '';
-            if (preg_match('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', $query, $matches)) {
-                $after = $matches[0];
-                $query = preg_replace('/(\s+INTO\s+(?:OUT|DUMP)FILE\s.*)$/ims', '', $query);
-            } elseif (preg_match('/(\s+FOR\s+UPDATE\s*)$/i', $query, $matches)) {
-               $after = $matches[0];
-               $query = preg_replace('/(\s+FOR\s+UPDATE\s*)$/im', '', $query);
-            } elseif (preg_match('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', $query, $matches)) {
-               $after = $matches[0];
-               $query = preg_replace('/(\s+LOCK\s+IN\s+SHARE\s+MODE\s*)$/im', '', $query);
-            }
-
-            if ($is_manip) {
-                return $query . " LIMIT $limit" . $after;
-            } else {
-                return $query . " LIMIT $offset, $limit" . $after;
-            }
-        }
-        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)
-    {
-        $connection = $this->getConnection();
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-        if ($this->connected_server_info) {
-            $server_info = $this->connected_server_info;
-        } else {
-            $server_info = @mysql_get_server_info($connection);
-        }
-        if (!$server_info) {
-            return $this->raiseError(null, null, null,
-                'Could not get server information', __FUNCTION__);
-        }
-        // cache server_info
-        $this->connected_server_info = $server_info;
-        if (!$native) {
-            $tmp = explode('.', $server_info, 3);
-            if (isset($tmp[2]) && strpos($tmp[2], '-')) {
-                $tmp2 = explode('-', @$tmp[2], 2);
-            } else {
-                $tmp2[0] = isset($tmp[2]) ? $tmp[2] : null;
-                $tmp2[1] = null;
-            }
-            $server_info = array(
-                'major' => isset($tmp[0]) ? $tmp[0] : null,
-                'minor' => isset($tmp[1]) ? $tmp[1] : null,
-                'patch' => $tmp2[0],
-                'extra' => $tmp2[1],
-                'native' => $server_info,
-            );
-        }
-        return $server_info;
-    }
-
-    // }}}
-    // {{{ _getServerCapabilities()
-
-    /**
-     * Fetch some information about the server capabilities
-     * (transactions, subselects, prepared statements, etc).
-     *
-     * @access private
-     */
-    function _getServerCapabilities()
-    {
-        if (!$this->server_capabilities_checked) {
-            $this->server_capabilities_checked = true;
-
-            //set defaults
-            $this->supported['sub_selects'] = 'emulated';
-            $this->supported['prepared_statements'] = 'emulated';
-            $this->supported['triggers'] = false;
-            $this->start_transaction = false;
-            $this->varchar_max_length = 255;
-            
-            $server_info = $this->getServerVersion();
-            if (is_array($server_info)) {
-                $server_version = $server_info['major'].'.'.$server_info['minor'].'.'.$server_info['patch'];
-
-                if (!version_compare($server_version, '4.1.0', '<')) {
-                    $this->supported['sub_selects'] = true;
-                    $this->supported['prepared_statements'] = true;
-                }
-
-                // SAVEPOINTs were introduced in MySQL 4.0.14 and 4.1.1 (InnoDB)
-                if (version_compare($server_version, '4.1.0', '>=')) {
-                    if (version_compare($server_version, '4.1.1', '<')) {
-                        $this->supported['savepoints'] = false;
-                    }
-                } elseif (version_compare($server_version, '4.0.14', '<')) {
-                    $this->supported['savepoints'] = false;
-                }
-
-                if (!version_compare($server_version, '4.0.11', '<')) {
-                    $this->start_transaction = true;
-                }
-
-                if (!version_compare($server_version, '5.0.3', '<')) {
-                    $this->varchar_max_length = 65532;
-                }
-
-                if (!version_compare($server_version, '5.0.2', '<')) {
-                    $this->supported['triggers'] = true;
-                }
-            }
-        }
-    }
-
-    // }}}
-    // {{{ function _skipUserDefinedVariable($query, $position)
-
-    /**
-     * Utility method, used by prepare() to avoid misinterpreting MySQL user 
-     * defined variables (SELECT @x:=5) for placeholders.
-     * Check if the placeholder is a false positive, i.e. if it is an user defined
-     * variable instead. If so, skip it and advance the position, otherwise
-     * return the current position, which is valid
-     *
-     * @param string $query
-     * @param integer $position current string cursor position
-     * @return integer $new_position
-     * @access protected
-     */
-    function _skipUserDefinedVariable($query, $position)
-    {
-        $found = strpos(strrev(substr($query, 0, $position)), '@');
-        if ($found === false) {
-            return $position;
-        }
-        $pos = strlen($query) - strlen(substr($query, $position)) - $found - 1;
-        $substring = substr($query, $pos, $position - $pos + 2);
-        if (preg_match('/^@\w+\s*:=$/', $substring)) {
-            return $position + 1; //found an user defined variable: skip it
-        }
-        return $position;
-    }
-
-    // }}}
-    // {{{ 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())
-    {
-        // connect to get server capabilities (http://pear.php.net/bugs/16147)
-        $connection = $this->getConnection();
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-
-        if ($this->options['emulate_prepared']
-            || $this->supported['prepared_statements'] !== true
-        ) {
-            return parent::prepare($query, $types, $result_types, $lobs);
-        }
-        $is_manip = ($result_types === MDB2_PREPARE_MANIP);
-        $offset = $this->offset;
-        $limit = $this->limit;
-        $this->offset = $this->limit = 0;
-        $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
-        $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
-        if ($result) {
-            if (PEAR::isError($result)) {
-                return $result;
-            }
-            $query = $result;
-        }
-        $placeholder_type_guess = $placeholder_type = null;
-        $question = '?';
-        $colon = ':';
-        $positions = array();
-        $position = 0;
-        while ($position < strlen($query)) {
-            $q_position = strpos($query, $question, $position);
-            $c_position = strpos($query, $colon, $position);
-            if ($q_position && $c_position) {
-                $p_position = min($q_position, $c_position);
-            } elseif ($q_position) {
-                $p_position = $q_position;
-            } elseif ($c_position) {
-                $p_position = $c_position;
-            } else {
-                break;
-            }
-            if (is_null($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
-            }
-            
-            //make sure this is not part of an user defined variable
-            $new_pos = $this->_skipUserDefinedVariable($query, $position);
-            if ($new_pos != $position) {
-                $position = $new_pos;
-                continue; //evaluate again starting from the new position
-            }
-
-            if ($query[$position] == $placeholder_type_guess) {
-                if (is_null($placeholder_type)) {
-                    $placeholder_type = $query[$p_position];
-                    $question = $colon = $placeholder_type;
-                }
-                if ($placeholder_type == ':') {
-                    $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
-                    $parameter = preg_replace($regexp, '\\1', $query);
-                    if ($parameter === '') {
-                        $err = $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
-                            'named parameter name must match "bindname_format" option', __FUNCTION__);
-                        return $err;
-                    }
-                    $positions[$p_position] = $parameter;
-                    $query = substr_replace($query, '?', $position, strlen($parameter)+1);
-                } else {
-                    $positions[$p_position] = count($positions);
-                }
-                $position = $p_position + 1;
-            } else {
-                $position = $p_position;
-            }
-        }
-
-        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']);
-        $query = "PREPARE $statement_name FROM ".$this->quote($query, 'text');
-        $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;
-    }
-
-    // }}}
-    // {{{ replace()
-
-    /**
-     * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
-     * query, except that if there is already a row in the table with the same
-     * key field values, the old row is deleted before the new row is inserted.
-     *
-     * The REPLACE type of query does not make part of the SQL standards. Since
-     * practically only MySQL implements it natively, this type of query is
-     * emulated through this method for other DBMS using standard types of
-     * queries inside a transaction to assure the atomicity of the operation.
-     *
-     * @access public
-     *
-     * @param string $table name of the table on which the REPLACE query will
-     *  be executed.
-     * @param array $fields associative array that describes the fields and the
-     *  values that will be inserted or updated in the specified table. The
-     *  indexes of the array are the names of all the fields of the table. The
-     *  values of the array are also associative arrays that describe the
-     *  values and other properties of the table fields.
-     *
-     *  Here follows a list of field properties that need to be specified:
-     *
-     *    value:
-     *          Value to be assigned to the specified field. This value may be
-     *          of specified in database independent type format as this
-     *          function can perform the necessary datatype conversions.
-     *
-     *    Default:
-     *          this property is required unless the Null property
-     *          is set to 1.
-     *
-     *    type
-     *          Name of the type of the field. Currently, all types Metabase
-     *          are supported except for clob and blob.
-     *
-     *    Default: no type conversion
-     *
-     *    null
-     *          Boolean property that indicates that the value for this field
-     *          should be set to null.
-     *
-     *          The default value for fields missing in INSERT queries may be
-     *          specified the definition of a table. Often, the default value
-     *          is already null, but since the REPLACE may be emulated using
-     *          an UPDATE query, make sure that all fields of the table are
-     *          listed in this function argument array.
-     *
-     *    Default: 0
-     *
-     *    key
-     *          Boolean property that indicates that this field should be
-     *          handled as a primary key or at least as part of the compound
-     *          unique index of the table that will determine the row that will
-     *          updated if it exists or inserted a new row otherwise.
-     *
-     *          This function will fail if no key field is specified or if the
-     *          value of a key field is set to null because fields that are
-     *          part of unique index they may not be null.
-     *
-     *    Default: 0
-     *
-     * @see http://dev.mysql.com/doc/refman/5.0/en/replace.html
-     * @return mixed MDB2_OK on success, a MDB2 error on failure
-     */
-    function replace($table, $fields)
-    {
-        $count = count($fields);
-        $query = $values = '';
-        $keys = $colnum = 0;
-        for (reset($fields); $colnum < $count; next($fields), $colnum++) {
-            $name = key($fields);
-            if ($colnum > 0) {
-                $query .= ',';
-                $values.= ',';
-            }
-            $query.= $this->quoteIdentifier($name, true);
-            if (isset($fields[$name]['null']) && $fields[$name]['null']) {
-                $value = 'NULL';
-            } else {
-                $type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null;
-                $value = $this->quote($fields[$name]['value'], $type);
-                if (PEAR::isError($value)) {
-                    return $value;
-                }
-            }
-            $values.= $value;
-            if (isset($fields[$name]['key']) && $fields[$name]['key']) {
-                if ($value === 'NULL') {
-                    return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
-                        'key value '.$name.' may not be NULL', __FUNCTION__);
-                }
-                $keys++;
-            }
-        }
-        if ($keys == 0) {
-            return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
-                'not specified which fields are keys', __FUNCTION__);
-        }
-
-        $connection = $this->getConnection();
-        if (PEAR::isError($connection)) {
-            return $connection;
-        }
-
-        $table = $this->quoteIdentifier($table, true);
-        $query = "REPLACE INTO $table ($query) VALUES ($values)";
-        $result = $this->_doQuery($query, true, $connection);
-        if (PEAR::isError($result)) {
-            return $result;
-        }
-        return $this->_affectedRows($connection, $result);
-    }
-
-    // }}}
-    // {{{ 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);
-        $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
-        $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL)";
-        $this->pushErrorHandling(PEAR_ERROR_RETURN);
-        $this->expectError(MDB2_ERROR_NOSUCHTABLE);
-        $result = $this->_doQuery($query, true);
-        $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 '.$seq_name.' could not be created', __FUNCTION__);
-                } else {
-                    return $this->nextID($seq_name, false);
-                }
-            }
-            return $result;
-        }
-        $value = $this->lastInsertID();
-        if (is_numeric($value)) {
-            $query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value";
-            $result = $this->_doQuery($query, true);
-            if (PEAR::isError($result)) {
-                $this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
-            }
-        }
-        return $value;
-    }
-
-    // }}}
-    // {{{ 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)
-    {
-        // not using mysql_insert_id() due to http://pear.php.net/bugs/bug.php?id=8051
-        return $this->queryOne('SELECT LAST_INSERT_ID()', '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);
-        $seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
-        $query = "SELECT MAX($seqcol_name) FROM $sequence_name";
-        return $this->queryOne($query, 'integer');
-    }
-}
-
-/**
- * MDB2 MySQL result driver
- *
- * @package MDB2
- * @category Database
- * @author  Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Result_mysql 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, $rownum = null)
-    {
-        if (!is_null($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) {
-            $row = @mysql_fetch_assoc($this->result);
-            if (is_array($row)
-                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
-            ) {
-                $row = array_change_key_case($row, $this->db->options['field_case']);
-            }
-        } else {
-           $row = @mysql_fetch_row($this->result);
-        }
-
-        if (!$row) {
-            if ($this->result === false) {
-                $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++) {
-            $column_name = @mysql_field_name($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.
-     *
-     * @return mixed integer value with the number of columns, a MDB2 error
-     *                       on failure
-     * @access public
-     */
-    function numCols()
-    {
-        $cols = @mysql_num_fields($this->result);
-        if (is_null($cols)) {
-            if ($this->result === false) {
-                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
-                    'resultset has already been freed', __FUNCTION__);
-            } elseif (is_null($this->result)) {
-                return count($this->types);
-            }
-            return $this->db->raiseError(null, null, null,
-                'Could not get column count', __FUNCTION__);
-        }
-        return $cols;
-    }
-
-    // }}}
-    // {{{ free()
-
-    /**
-     * Free the internal resources associated with result.
-     *
-     * @return boolean true on success, false if result is invalid
-     * @access public
-     */
-    function free()
-    {
-        if (is_resource($this->result) && $this->db->connection) {
-            $free = @mysql_free_result($this->result);
-            if ($free === false) {
-                return $this->db->raiseError(null, null, null,
-                    'Could not free result', __FUNCTION__);
-            }
-        }
-        $this->result = false;
-        return MDB2_OK;
-    }
-}
-
-/**
- * MDB2 MySQL buffered result driver
- *
- * @package MDB2
- * @category Database
- * @author  Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_BufferedResult_mysql extends MDB2_Result_mysql
-{
-    // }}}
-    // {{{ 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) && !@mysql_data_seek($this->result, $rownum)) {
-            if ($this->result === false) {
-                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
-                    'resultset has already been freed', __FUNCTION__);
-            } elseif (is_null($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()
-    {
-        $rows = @mysql_num_rows($this->result);
-        if (false === $rows) {
-            if (false === $this->result) {
-                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
-                    'resultset has already been freed', __FUNCTION__);
-            } elseif (is_null($this->result)) {
-                return 0;
-            }
-            return $this->db->raiseError(null, null, null,
-                'Could not get row count', __FUNCTION__);
-        }
-        return $rows;
-    }
-    
-    // }}}
-}
-
-/**
- * MDB2 MySQL statement driver
- *
- * @package MDB2
- * @category Database
- * @author  Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Statement_mysql 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, $result_wrap_class = false)
-    {
-        if (is_null($this->statement)) {
-            $result = parent::_execute($result_class, $result_wrap_class);
-            return $result;
-        }
-        $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;
-        }
-
-        $query = 'EXECUTE '.$this->statement;
-        if (!empty($this->positions)) {
-            $parameters = array();
-            foreach ($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__);
-                }
-                $close = false;
-                $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, $type);
-                if (PEAR::isError($quoted)) {
-                    return $quoted;
-                }
-                $param_query = 'SET @'.$parameter.' = '.$quoted;
-                $result = $this->db->_doQuery($param_query, true, $connection);
-                if (PEAR::isError($result)) {
-                    return $result;
-                }
-            }
-            $query.= ' USING @'.implode(', @', array_values($this->positions));
-        }
-
-        $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 $result;
-    }
-
-    // }}}
-    // {{{ free()
-
-    /**
-     * Release resources allocated for the specified prepared query.
-     *
-     * @return mixed MDB2_OK on success, a MDB2 error on failure
-     * @access public
-     */
-    function free()
-    {
-        if (is_null($this->positions)) {
-            return $this->db->raiseError(MDB2_ERROR, null, null,
-                'Prepared statement has already been freed', __FUNCTION__);
-        }
-        $result = MDB2_OK;
-
-        if (!is_null($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;
-    }
-}
-?>