<?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($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); } return TRUE; } // -------------------------------------------------------------------- /** * Platform-dependant string escape * * @param string * @return string */ protected function _escape_str($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 */