tims-todo/system/database/drivers/cubrid/cubrid_driver.php

427 lines
9.7 KiB
PHP
Executable File

<?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 - 2014, 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
*
* @param bool $persistent
* @return resource
*/
public function db_connect($persistent = FALSE)
{
if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:([^:]*):([^:]*):(\?.+)?$/', $this->dsn, $matches))
{
$func = ($persistent !== TRUE) ? 'cubrid_connect_with_url' : 'cubrid_pconnect_with_url';
return ($matches[2] === '' && $matches[3] === '' && $this->username !== '' && $this->password !== '')
? $func($this->dsn, $this->username, $this->password)
: $func($this->dsn);
}
$func = ($persistent !== TRUE) ? 'cubrid_connect' : 'cubrid_pconnect';
return ($this->username !== '')
? $func($this->hostname, $this->port, $this->database, $this->username, $this->password)
: $func($this->hostname, $this->port, $this->database);
}
// --------------------------------------------------------------------
/**
* Reconnect
*
* Keep / reestablish the db connection if no queries have been
* sent for a length of time exceeding the server's idle timeout
*
* @return void
*/
public function reconnect()
{
if (cubrid_ping($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($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
}
return TRUE;
}
// --------------------------------------------------------------------
/**
* Platform-dependant string escape
*
* @param string
* @return string
*/
protected function _escape_str($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($this->conn_id)))))
{
return cubrid_real_escape_string($str, $this->conn_id);
}
return addslashes($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($this->conn_id));
}
// --------------------------------------------------------------------
/**
* FROM tables
*
* Groups tables in FROM clauses if needed, so there is no confusion
* about operator precedence.
*
* @return string
*/
protected function _from_tables()
{
if ( ! empty($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 */