system/database/drivers/cubrid/cubrid_driver.php - code-igniter-v3-giggi - Gitiles

 <?php
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
  * Licensed under the Open Software License version 3.0
  *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
  * http://opensource.org/licenses/OSL-3.0
  * If you did not receive a copy of the license and are unable to obtain it
  * through the world wide web, please send an email to
  * licensing@ellislab.com so we can send you a copy immediately.
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
  * @copyright	Copyright (c) 2008 - 2013, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.1
  * @filesource
  */
 defined('BASEPATH') OR exit('No direct script access allowed');

 /**
  * CUBRID Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
  * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
  * @subpackage	Drivers
  * @category	Database
  * @author		Esen Sagynov
  * @link		http://codeigniter.com/user_guide/database/
  */
 class CI_DB_cubrid_driver extends CI_DB {

 	/**
 	 * Database driver
 	 *
 	 * @var	string
 	 */
 	public $dbdriver = 'cubrid';

 	/**
 	 * Auto-commit flag
 	 *
 	 * @var	bool
 	 */
 	public $auto_commit = TRUE;

 	// --------------------------------------------------------------------

 	/**
 	 * Identifier escape character
 	 *
 	 * @var	string
 	 */
 	protected $_escape_char = '`';

 	/**
 	 * ORDER BY random keyword
 	 *
 	 * @var	array
 	 */
 	protected $_random_keyword = array('RANDOM()', 'RANDOM(%d)');

 	// --------------------------------------------------------------------

 	/**
 	 * Class constructor
 	 *
 	 * @param	array	$params
 	 * @return	void
 	 */
 	public function __construct($params)
 	{
 		parent::__construct($params);

 		if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:[^:]*:[^:]*:(\?.+)?$/', $this->dsn, $matches))
 		{
 			if (stripos($matches[2], 'autocommit=off') !== FALSE)
 			{
 				$this->auto_commit = FALSE;
 			}
 		}
 		else
 		{
 			// If no port is defined by the user, use the default value
 			empty($this->port) OR $this->port = 33000;
 		}
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Non-persistent database connection
 	 *
 	 * @return	resource
 	 */
 	public function db_connect()
 	{
 		return $this->_cubrid_connect();
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Persistent database connection
 	 *
 	 * In CUBRID persistent DB connection is supported natively in CUBRID
 	 * engine which can be configured in the CUBRID Broker configuration
 	 * file by setting the CCI_PCONNECT parameter to ON. In that case, all
 	 * connections established between the client application and the
 	 * server will become persistent.
 	 *
 	 * @return	resource
 	 */
 	public function db_pconnect()
 	{
 		return $this->_cubrid_connect(TRUE);
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * CUBRID connection
 	 *
 	 * A CUBRID-specific method to create a connection to the database.
 	 * Except for determining if a persistent connection should be used,
 	 * the rest of the logic is the same for db_connect() and db_pconnect().
 	 *
 	 * @param	bool	$persistent
 	 * @return	resource
 	 */
 	protected function _cubrid_connect($persistent = FALSE)
 	{
 		if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:([^:]*):([^:]*):(\?.+)?$/', $this->dsn, $matches))
 		{
 			$_temp = ($persistent !== TRUE) ? 'cubrid_connect_with_url' : 'cubrid_pconnect_with_url';
 			$conn_id = ($matches[2] === '' && $matches[3] === '' && $this->username !== '' && $this->password !== '')
 					? $_temp($this->dsn, $this->username, $this->password)
 					: $_temp($this->dsn);
 		}
 		else
 		{
 			$_temp = ($persistent !== TRUE) ? 'cubrid_connect' : 'cubrid_pconnect';
 			$conn_id = ($this->username !== '')
 					? $_temp($this->hostname, $this->port, $this->database, $this->username, $this->password)
 					: $_temp($this->hostname, $this->port, $this->database);
 		}

 		return $conn_id;
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Reconnect
 	 *
 	 * Keep / reestablish the db connection if no queries have been
 	 * sent for a length of time exceeding the server's idle timeout
 	 *
 	 * @return	void
 	 */
 	public function reconnect()
 	{
 		if (cubrid_ping($this->conn_id) === FALSE)
 		{
 			$this->conn_id = FALSE;
 		}
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Database version number
 	 *
 	 * @return	string
 	 */
 	public function version()
 	{
 		if (isset($this->data_cache['version']))
 		{
 			return $this->data_cache['version'];
 		}
 		elseif ( ! $this->conn_id)
 		{
 			$this->initialize();
 		}

 		return ( ! $this->conn_id OR ($version = cubrid_get_server_info($this->conn_id)) === FALSE)
 			? FALSE
 			: $this->data_cache['version'] = $version;
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Execute the query
 	 *
 	 * @param	string	$sql	an SQL query
 	 * @return	resource
 	 */
 	protected function _execute($sql)
 	{
 		return @cubrid_query($sql, $this->conn_id);
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Begin Transaction
 	 *
 	 * @param	bool	$test_mode
 	 * @return	bool
 	 */
 	public function trans_begin($test_mode = FALSE)
 	{
 		// When transactions are nested we only begin/commit/rollback the outermost ones
 		if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
 		{
 			return TRUE;
 		}

 		// Reset the transaction failure flag.
 		// If the $test_mode flag is set to TRUE transactions will be rolled back
 		// even if the queries produce a successful result.
 		$this->_trans_failure = ($test_mode === TRUE);

 		if (cubrid_get_autocommit($this->conn_id))
 		{
 			cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE);
 		}

 		return TRUE;
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Commit Transaction
 	 *
 	 * @return	bool
 	 */
 	public function trans_commit()
 	{
 		// When transactions are nested we only begin/commit/rollback the outermost ones
 		if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
 		{
 			return TRUE;
 		}

 		cubrid_commit($this->conn_id);

 		if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
 		{
 			cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
 		}

 		return TRUE;
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Rollback Transaction
 	 *
 	 * @return	bool
 	 */
 	public function trans_rollback()
 	{
 		// When transactions are nested we only begin/commit/rollback the outermost ones
 		if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
 		{
 			return TRUE;
 		}

 		cubrid_rollback($this->conn_id);

 		if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
 		{
 			cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
 		}

 		return TRUE;
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Escape String
 	 *
 	 * @param	string	$str
 	 * @param	bool	$like	Whether or not the string will be used in a LIKE condition
 	 * @return	string
 	 */
 	public function escape_str($str, $like = FALSE)
 	{
 		if (is_array($str))
 		{
 			foreach ($str as $key => $val)
 			{
 				$str[$key] = $this->escape_str($val, $like);
 			}

 			return $str;
 		}

 		if (function_exists('cubrid_real_escape_string') &&
 			(is_resource($this->conn_id)
 				OR (get_resource_type($this->conn_id) === 'Unknown' && preg_match('/Resource id #/', strval($this->conn_id)))))
 		{
 			$str = cubrid_real_escape_string($str, $this->conn_id);
 		}
 		else
 		{
 			$str = addslashes($str);
 		}

 		// escape LIKE condition wildcards
 		if ($like === TRUE)
 		{
 			return str_replace(array('%', '_'), array('\\%', '\\_'), $str);
 		}

 		return $str;
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Affected Rows
 	 *
 	 * @return	int
 	 */
 	public function affected_rows()
 	{
 		return @cubrid_affected_rows();
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Insert ID
 	 *
 	 * @return	int
 	 */
 	public function insert_id()
 	{
 		return @cubrid_insert_id($this->conn_id);
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * List table query
 	 *
 	 * Generates a platform-specific query string so that the table names can be fetched
 	 *
 	 * @param	bool	$prefix_limit
 	 * @return	string
 	 */
 	protected function _list_tables($prefix_limit = FALSE)
 	{
 		$sql = 'SHOW TABLES';

 		if ($prefix_limit !== FALSE && $this->dbprefix !== '')
 		{
 			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
 		}

 		return $sql;
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Show column query
 	 *
 	 * Generates a platform-specific query string so that the column names can be fetched
 	 *
 	 * @param	string	$table
 	 * @return	string
 	 */
 	protected function _list_columns($table = '')
 	{
 		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Returns an object with field data
 	 *
 	 * @param	string	$table
 	 * @return	array
 	 */
 	public function field_data($table = '')
 	{
 		if ($table === '')
 		{
 			return ($this->db_debug) ? $this->display_error('db_field_param_missing') : FALSE;
 		}

 		if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
 		{
 			return FALSE;
 		}
 		$query = $query->result_object();

 		$retval = array();
 		for ($i = 0, $c = count($query); $i < $c; $i++)
 		{
 			$retval[$i]			= new stdClass();
 			$retval[$i]->name		= $query[$i]->Field;

 			sscanf($query[$i]->Type, '%[a-z](%d)',
 				$retval[$i]->type,
 				$retval[$i]->max_length
 			);

 			$retval[$i]->default		= $query[$i]->Default;
 			$retval[$i]->primary_key	= (int) ($query[$i]->Key === 'PRI');
 		}

 		return $retval;
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Error
 	 *
 	 * Returns an array containing code and message of the last
 	 * database error that has occured.
 	 *
 	 * @return	array
 	 */
 	public function error()
 	{
 		return array('code' => cubrid_errno($this->conn_id), 'message' => cubrid_error($this->conn_id));
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Update_Batch statement
 	 *
 	 * Generates a platform-specific batch update string from the supplied data
 	 *
 	 * @param	string	$table	Table name
 	 * @param	array	$values	Update data
 	 * @param	string	$index	WHERE key
 	 * @return	string
 	 */
 	protected function _update_batch($table, $values, $index)
 	{
 		$ids = array();
 		foreach ($values as $key => $val)
 		{
 			$ids[] = $val[$index];

 			foreach (array_keys($val) as $field)
 			{
 				if ($field !== $index)
 				{
 					$final[$field][] = 'WHEN '.$index.' = '.$val[$index].' THEN '.$val[$field];
 				}
 			}
 		}

 		$cases = '';
 		foreach ($final as $k => $v)
 		{
 			$cases .= $k." = CASE \n"
 				.implode("\n", $v)
 				.'ELSE '.$k.' END, ';
 		}

 		$this->where($index.' IN('.implode(',', $ids).')', NULL, FALSE);

 		return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * FROM tables
 	 *
 	 * Groups tables in FROM clauses if needed, so there is no confusion
 	 * about operator precedence.
 	 *
 	 * @return	string
 	 */
 	protected function _from_tables()
 	{
 		if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
 		{
 			return '('.implode(', ', $this->qb_from).')';
 		}

 		return implode(', ', $this->qb_from);
 	}

 	// --------------------------------------------------------------------

 	/**
 	 * Close DB Connection
 	 *
 	 * @return	void
 	 */
 	protected function _close()
 	{
 		@cubrid_close($this->conn_id);
 	}

 }

 /* End of file cubrid_driver.php */
 /* Location: ./system/database/drivers/cubrid/cubrid_driver.php */
	<?php
	/**
	* CodeIgniter
	*
	* An open source application development framework for PHP 5.2.4 or newer
	*
	* NOTICE OF LICENSE
	*
	* Licensed under the Open Software License version 3.0
	*
	* This source file is subject to the Open Software License (OSL 3.0) that is
	* bundled with this package in the files license.txt / license.rst. It is
	* also available through the world wide web at this URL:
	* http://opensource.org/licenses/OSL-3.0
	* If you did not receive a copy of the license and are unable to obtain it
	* through the world wide web, please send an email to
	* licensing@ellislab.com so we can send you a copy immediately.
	*
	* @package CodeIgniter
	* @author EllisLab Dev Team
	* @copyright Copyright (c) 2008 - 2013, EllisLab, Inc. (http://ellislab.com/)
	* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
	* @link http://codeigniter.com
	* @since Version 2.1
	* @filesource
	*/
	defined('BASEPATH') OR exit('No direct script access allowed');

	/**
	* CUBRID Database Adapter Class
	*
	* Note: _DB is an extender class that the app controller
	* creates dynamically based on whether the query builder
	* class is being used or not.
	*
	* @package CodeIgniter
	* @subpackage Drivers
	* @category Database
	* @author Esen Sagynov
	* @link http://codeigniter.com/user_guide/database/
	*/
	class CI_DB_cubrid_driver extends CI_DB {

	/**
	* Database driver
	*
	* @var string
	*/
	public $dbdriver = 'cubrid';

	/**
	* Auto-commit flag
	*
	* @var bool
	*/
	public $auto_commit = TRUE;

	// --------------------------------------------------------------------

	/**
	* Identifier escape character
	*
	* @var string
	*/
	protected $_escape_char = '`';

	/**
	* ORDER BY random keyword
	*
	* @var array
	*/
	protected $_random_keyword = array('RANDOM()', 'RANDOM(%d)');

	// --------------------------------------------------------------------

	/**
	* Class constructor
	*
	* @param array $params
	* @return void
	*/
	public function __construct($params)
	{
	parent::__construct($params);

	if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:[^:]:[^:]:(\?.+)?$/', $this->dsn, $matches))
	{
	if (stripos($matches[2], 'autocommit=off') !== FALSE)
	{
	$this->auto_commit = FALSE;
	}
	}
	else
	{
	// If no port is defined by the user, use the default value
	empty($this->port) OR $this->port = 33000;
	}
	}

	// --------------------------------------------------------------------

	/**
	* Non-persistent database connection
	*
	* @return resource
	*/
	public function db_connect()
	{
	return $this->_cubrid_connect();
	}

	// --------------------------------------------------------------------

	/**
	* Persistent database connection
	*
	* In CUBRID persistent DB connection is supported natively in CUBRID
	* engine which can be configured in the CUBRID Broker configuration
	* file by setting the CCI_PCONNECT parameter to ON. In that case, all
	* connections established between the client application and the
	* server will become persistent.
	*
	* @return resource
	*/
	public function db_pconnect()
	{
	return $this->_cubrid_connect(TRUE);
	}

	// --------------------------------------------------------------------

	/**
	* CUBRID connection
	*
	* A CUBRID-specific method to create a connection to the database.
	* Except for determining if a persistent connection should be used,
	* the rest of the logic is the same for db_connect() and db_pconnect().
	*
	* @param bool $persistent
	* @return resource
	*/
	protected function _cubrid_connect($persistent = FALSE)
	{
	if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:([^:]):([^:]):(\?.+)?$/', $this->dsn, $matches))
	{
	$_temp = ($persistent !== TRUE) ? 'cubrid_connect_with_url' : 'cubrid_pconnect_with_url';
	$conn_id = ($matches[2] === '' && $matches[3] === '' && $this->username !== '' && $this->password !== '')
	? $_temp($this->dsn, $this->username, $this->password)
	: $_temp($this->dsn);
	}
	else
	{
	$_temp = ($persistent !== TRUE) ? 'cubrid_connect' : 'cubrid_pconnect';
	$conn_id = ($this->username !== '')
	? $_temp($this->hostname, $this->port, $this->database, $this->username, $this->password)
	: $_temp($this->hostname, $this->port, $this->database);
	}

	return $conn_id;
	}

	// --------------------------------------------------------------------

	/**
	* Reconnect
	*
	* Keep / reestablish the db connection if no queries have been
	* sent for a length of time exceeding the server's idle timeout
	*
	* @return void
	*/
	public function reconnect()
	{
	if (cubrid_ping($this->conn_id) === FALSE)
	{
	$this->conn_id = FALSE;
	}
	}

	// --------------------------------------------------------------------

	/**
	* Database version number
	*
	* @return string
	*/
	public function version()
	{
	if (isset($this->data_cache['version']))
	{
	return $this->data_cache['version'];
	}
	elseif ( ! $this->conn_id)
	{
	$this->initialize();
	}

	return ( ! $this->conn_id OR ($version = cubrid_get_server_info($this->conn_id)) === FALSE)
	? FALSE
	: $this->data_cache['version'] = $version;
	}

	// --------------------------------------------------------------------

	/**
	* Execute the query
	*
	* @param string $sql an SQL query
	* @return resource
	*/
	protected function _execute($sql)
	{
	return @cubrid_query($sql, $this->conn_id);
	}

	// --------------------------------------------------------------------

	/**
	* Begin Transaction
	*
	* @param bool $test_mode
	* @return bool
	*/
	public function trans_begin($test_mode = FALSE)
	{
	// When transactions are nested we only begin/commit/rollback the outermost ones
	if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
	{
	return TRUE;
	}

	// Reset the transaction failure flag.
	// If the $test_mode flag is set to TRUE transactions will be rolled back
	// even if the queries produce a successful result.
	$this->_trans_failure = ($test_mode === TRUE);

	if (cubrid_get_autocommit($this->conn_id))
	{
	cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE);
	}

	return TRUE;
	}

	// --------------------------------------------------------------------

	/**
	* Commit Transaction
	*
	* @return bool
	*/
	public function trans_commit()
	{
	// When transactions are nested we only begin/commit/rollback the outermost ones
	if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
	{
	return TRUE;
	}

	cubrid_commit($this->conn_id);

	if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
	{
	cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
	}

	return TRUE;
	}

	// --------------------------------------------------------------------

	/**
	* Rollback Transaction
	*
	* @return bool
	*/
	public function trans_rollback()
	{
	// When transactions are nested we only begin/commit/rollback the outermost ones
	if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
	{
	return TRUE;
	}

	cubrid_rollback($this->conn_id);

	if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
	{
	cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
	}

	return TRUE;
	}

	// --------------------------------------------------------------------

	/**
	* Escape String
	*
	* @param string $str
	* @param bool $like Whether or not the string will be used in a LIKE condition
	* @return string
	*/
	public function escape_str($str, $like = FALSE)
	{
	if (is_array($str))
	{
	foreach ($str as $key => $val)
	{
	$str[$key] = $this->escape_str($val, $like);
	}

	return $str;
	}

	if (function_exists('cubrid_real_escape_string') &&
	(is_resource($this->conn_id)
	OR (get_resource_type($this->conn_id) === 'Unknown' && preg_match('/Resource id #/', strval($this->conn_id)))))
	{
	$str = cubrid_real_escape_string($str, $this->conn_id);
	}
	else
	{
	$str = addslashes($str);
	}

	// escape LIKE condition wildcards
	if ($like === TRUE)
	{
	return str_replace(array('%', '_'), array('\\%', '\\_'), $str);
	}

	return $str;
	}

	// --------------------------------------------------------------------

	/**
	* Affected Rows
	*
	* @return int
	*/
	public function affected_rows()
	{
	return @cubrid_affected_rows();
	}

	// --------------------------------------------------------------------

	/**
	* Insert ID
	*
	* @return int
	*/
	public function insert_id()
	{
	return @cubrid_insert_id($this->conn_id);
	}

	// --------------------------------------------------------------------

	/**
	* List table query
	*
	* Generates a platform-specific query string so that the table names can be fetched
	*
	* @param bool $prefix_limit
	* @return string
	*/
	protected function _list_tables($prefix_limit = FALSE)
	{
	$sql = 'SHOW TABLES';

	if ($prefix_limit !== FALSE && $this->dbprefix !== '')
	{
	return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
	}

	return $sql;
	}

	// --------------------------------------------------------------------

	/**
	* Show column query
	*
	* Generates a platform-specific query string so that the column names can be fetched
	*
	* @param string $table
	* @return string
	*/
	protected function _list_columns($table = '')
	{
	return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
	}

	// --------------------------------------------------------------------

	/**
	* Returns an object with field data
	*
	* @param string $table
	* @return array
	*/
	public function field_data($table = '')
	{
	if ($table === '')
	{
	return ($this->db_debug) ? $this->display_error('db_field_param_missing') : FALSE;
	}

	if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE)
	{
	return FALSE;
	}
	$query = $query->result_object();

	$retval = array();
	for ($i = 0, $c = count($query); $i < $c; $i++)
	{
	$retval[$i] = new stdClass();
	$retval[$i]->name = $query[$i]->Field;

	sscanf($query[$i]->Type, '%[a-z](%d)',
	$retval[$i]->type,
	$retval[$i]->max_length
	);

	$retval[$i]->default = $query[$i]->Default;
	$retval[$i]->primary_key = (int) ($query[$i]->Key === 'PRI');
	}

	return $retval;
	}

	// --------------------------------------------------------------------

	/**
	* Error
	*
	* Returns an array containing code and message of the last
	* database error that has occured.
	*
	* @return array
	*/
	public function error()
	{
	return array('code' => cubrid_errno($this->conn_id), 'message' => cubrid_error($this->conn_id));
	}

	// --------------------------------------------------------------------

	/**
	* Update_Batch statement
	*
	* Generates a platform-specific batch update string from the supplied data
	*
	* @param string $table Table name
	* @param array $values Update data
	* @param string $index WHERE key
	* @return string
	*/
	protected function _update_batch($table, $values, $index)
	{
	$ids = array();
	foreach ($values as $key => $val)
	{
	$ids[] = $val[$index];

	foreach (array_keys($val) as $field)
	{
	if ($field !== $index)
	{
	$final[$field][] = 'WHEN '.$index.' = '.$val[$index].' THEN '.$val[$field];
	}
	}
	}

	$cases = '';
	foreach ($final as $k => $v)
	{
	$cases .= $k." = CASE \n"
	.implode("\n", $v)
	.'ELSE '.$k.' END, ';
	}

	$this->where($index.' IN('.implode(',', $ids).')', NULL, FALSE);

	return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
	}

	// --------------------------------------------------------------------

	/**
	* FROM tables
	*
	* Groups tables in FROM clauses if needed, so there is no confusion
	* about operator precedence.
	*
	* @return string
	*/
	protected function _from_tables()
	{
	if ( ! empty($this->qb_join) && count($this->qb_from) > 1)
	{
	return '('.implode(', ', $this->qb_from).')';
	}

	return implode(', ', $this->qb_from);
	}

	// --------------------------------------------------------------------

	/**
	* Close DB Connection
	*
	* @return void
	*/
	protected function _close()
	{
	@cubrid_close($this->conn_id);
	}

	}

	/* End of file cubrid_driver.php */
	/* Location: ./system/database/drivers/cubrid/cubrid_driver.php */