system/database/drivers/odbc/odbc_driver.php - code-igniter-v3-giggi - Gitiles

 <?php
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.2.4 or newer
  *
  * This content is released under the MIT License (MIT)
  *
  * Copyright (c) 2014, British Columbia Institute of Technology
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  *
  * @package	CodeIgniter
  * @author	EllisLab Dev Team
  * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
  * @copyright	Copyright (c) 2014, British Columbia Institute of Technology (http://bcit.ca/)
  * @license	http://opensource.org/licenses/MIT	MIT License
  * @link	http://codeigniter.com
  * @since	Version 1.3.0
  * @filesource
  */
 defined('BASEPATH') OR exit('No direct script access allowed');

 /**
  * ODBC 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		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/database/
  */
 class CI_DB_odbc_driver extends CI_DB {

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

 	/**
 	 * Database schema
 	 *
 	 * @var	string
 	 */
 	public $schema = 'public';

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

 	/**
 	 * Identifier escape character
 	 *
 	 * Must be empty for ODBC.
 	 *
 	 * @var	string
 	 */
 	protected $_escape_char = '';

 	/**
 	 * ESCAPE statement string
 	 *
 	 * @var	string
 	 */
 	protected $_like_escape_str = " {escape '%s'} ";

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

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

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

 		// Legacy support for DSN in the hostname field
 		if (empty($this->dsn))
 		{
 			$this->dsn = $this->hostname;
 		}
 	}

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

 	/**
 	 * Non-persistent database connection
 	 *
 	 * @param	bool	$persistent
 	 * @return	resource
 	 */
 	public function db_connect($persistent = FALSE)
 	{
 		return ($persistent === TRUE)
 			? odbc_pconnect($this->dsn, $this->username, $this->password)
 			: odbc_connect($this->dsn, $this->username, $this->password);
 	}

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

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

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

 	/**
 	 * 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);

 		return odbc_autocommit($this->conn_id, FALSE);
 	}

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

 	/**
 	 * 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;
 		}

 		$ret = odbc_commit($this->conn_id);
 		odbc_autocommit($this->conn_id, TRUE);
 		return $ret;
 	}

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

 	/**
 	 * 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;
 		}

 		$ret = odbc_rollback($this->conn_id);
 		odbc_autocommit($this->conn_id, TRUE);
 		return $ret;
 	}

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

 	/**
 	 * Platform-dependant string escape
 	 *
 	 * @param	string
 	 * @return	string
 	 */
 	protected function _escape_str($str)
 	{
 		return remove_invisible_characters($str);
 	}

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

 	/**
 	 * Affected Rows
 	 *
 	 * @return	int
 	 */
 	public function affected_rows()
 	{
 		return odbc_num_rows($this->result_id);
 	}

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

 	/**
 	 * Insert ID
 	 *
 	 * @return	bool
 	 */
 	public function insert_id()
 	{
 		return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
 	}

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

 	/**
 	 * Show 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)
 	{
 		$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = '".$this->schema."'";

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

 		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 '.$table;
 	}

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

 	/**
 	 * Field data query
 	 *
 	 * Generates a platform-specific query so that the column data can be retrieved
 	 *
 	 * @param	string	$table
 	 * @return	string
 	 */
 	protected function _field_data($table)
 	{
 		return 'SELECT TOP 1 FROM '.$table;
 	}

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

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

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

 	/**
 	 * Update statement
 	 *
 	 * Generates a platform-specific update string from the supplied data
 	 *
 	 * @param	string	$table
 	 * @param	array	$values
 	 * @return	string
 	 */
 	protected function _update($table, $values)
 	{
 		$this->qb_limit = FALSE;
 		$this->qb_orderby = array();
 		return parent::_update($table, $values);
 	}

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

 	/**
 	 * Truncate statement
 	 *
 	 * Generates a platform-specific truncate string from the supplied data
 	 *
 	 * If the database does not support the TRUNCATE statement,
 	 * then this method maps to 'DELETE FROM table'
 	 *
 	 * @param	string	$table
 	 * @return	string
 	 */
 	protected function _truncate($table)
 	{
 		return 'DELETE FROM '.$table;
 	}

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

 	/**
 	 * Delete statement
 	 *
 	 * Generates a platform-specific delete string from the supplied data
 	 *
 	 * @param	string	$table
 	 * @return	string
 	 */
 	protected function _delete($table)
 	{
 		$this->qb_limit = FALSE;
 		return parent::_delete($table);
 	}

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

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

 }

 /* End of file odbc_driver.php */
 /* Location: ./system/database/drivers/odbc/odbc_driver.php */
	<?php
	/**
	* CodeIgniter
	*
	* An open source application development framework for PHP 5.2.4 or newer
	*
	* This content is released under the MIT License (MIT)
	*
	* Copyright (c) 2014, British Columbia Institute of Technology
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to deal
	* in the Software without restriction, including without limitation the rights
	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	* copies of the Software, and to permit persons to whom the Software is
	* furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	* THE SOFTWARE.
	*
	* @package CodeIgniter
	* @author EllisLab Dev Team
	* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
	* @copyright Copyright (c) 2014, British Columbia Institute of Technology (http://bcit.ca/)
	* @license http://opensource.org/licenses/MIT MIT License
	* @link http://codeigniter.com
	* @since Version 1.3.0
	* @filesource
	*/
	defined('BASEPATH') OR exit('No direct script access allowed');

	/**
	* ODBC 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 EllisLab Dev Team
	* @link http://codeigniter.com/user_guide/database/
	*/
	class CI_DB_odbc_driver extends CI_DB {

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

	/**
	* Database schema
	*
	* @var string
	*/
	public $schema = 'public';

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

	/**
	* Identifier escape character
	*
	* Must be empty for ODBC.
	*
	* @var string
	*/
	protected $_escape_char = '';

	/**
	* ESCAPE statement string
	*
	* @var string
	*/
	protected $_like_escape_str = " {escape '%s'} ";

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

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

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

	// Legacy support for DSN in the hostname field
	if (empty($this->dsn))
	{
	$this->dsn = $this->hostname;
	}
	}

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

	/**
	* Non-persistent database connection
	*
	* @param bool $persistent
	* @return resource
	*/
	public function db_connect($persistent = FALSE)
	{
	return ($persistent === TRUE)
	? odbc_pconnect($this->dsn, $this->username, $this->password)
	: odbc_connect($this->dsn, $this->username, $this->password);
	}

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

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

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

	/**
	* 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);

	return odbc_autocommit($this->conn_id, FALSE);
	}

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

	/**
	* 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;
	}

	$ret = odbc_commit($this->conn_id);
	odbc_autocommit($this->conn_id, TRUE);
	return $ret;
	}

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

	/**
	* 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;
	}

	$ret = odbc_rollback($this->conn_id);
	odbc_autocommit($this->conn_id, TRUE);
	return $ret;
	}

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

	/**
	* Platform-dependant string escape
	*
	* @param string
	* @return string
	*/
	protected function _escape_str($str)
	{
	return remove_invisible_characters($str);
	}

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

	/**
	* Affected Rows
	*
	* @return int
	*/
	public function affected_rows()
	{
	return odbc_num_rows($this->result_id);
	}

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

	/**
	* Insert ID
	*
	* @return bool
	*/
	public function insert_id()
	{
	return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
	}

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

	/**
	* Show 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)
	{
	$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = '".$this->schema."'";

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

	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 '.$table;
	}

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

	/**
	* Field data query
	*
	* Generates a platform-specific query so that the column data can be retrieved
	*
	* @param string $table
	* @return string
	*/
	protected function _field_data($table)
	{
	return 'SELECT TOP 1 FROM '.$table;
	}

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

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

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

	/**
	* Update statement
	*
	* Generates a platform-specific update string from the supplied data
	*
	* @param string $table
	* @param array $values
	* @return string
	*/
	protected function _update($table, $values)
	{
	$this->qb_limit = FALSE;
	$this->qb_orderby = array();
	return parent::_update($table, $values);
	}

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

	/**
	* Truncate statement
	*
	* Generates a platform-specific truncate string from the supplied data
	*
	* If the database does not support the TRUNCATE statement,
	* then this method maps to 'DELETE FROM table'
	*
	* @param string $table
	* @return string
	*/
	protected function _truncate($table)
	{
	return 'DELETE FROM '.$table;
	}

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

	/**
	* Delete statement
	*
	* Generates a platform-specific delete string from the supplied data
	*
	* @param string $table
	* @return string
	*/
	protected function _delete($table)
	{
	$this->qb_limit = FALSE;
	return parent::_delete($table);
	}

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

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

	}

	/* End of file odbc_driver.php */
	/* Location: ./system/database/drivers/odbc/odbc_driver.php */