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Direktori : /home2/selectio/www/system/database/drivers/cubrid/ |
Current File : //home2/selectio/www/system/database/drivers/cubrid/cubrid_driver.php |
<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014 - 2019, 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. (https://ellislab.com/) * @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/) * @license https://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 2.1.0 * @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 https://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']; } 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, $this->conn_id); } // -------------------------------------------------------------------- /** * Begin Transaction * * @return bool */ protected function _trans_begin() { if (($autocommit = cubrid_get_autocommit($this->conn_id)) === NULL) { return FALSE; } elseif ($autocommit === TRUE) { return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE); } return TRUE; } // -------------------------------------------------------------------- /** * Commit Transaction * * @return bool */ protected function _trans_commit() { if ( ! cubrid_commit($this->conn_id)) { return FALSE; } if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id)) { return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); } return TRUE; } // -------------------------------------------------------------------- /** * Rollback Transaction * * @return bool */ protected function _trans_rollback() { if ( ! cubrid_rollback($this->conn_id)) { return FALSE; } if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id)) { cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); } return TRUE; } // -------------------------------------------------------------------- /** * Platform-dependent string escape * * @param string * @return string */ protected function _escape_str($str) { return cubrid_real_escape_string($str, $this->conn_id); } // -------------------------------------------------------------------- /** * Affected Rows * * @return int */ public function affected_rows() { return cubrid_affected_rows(); } // -------------------------------------------------------------------- /** * Insert ID * * @return int */ public function insert_id() { return cubrid_insert_id($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 (($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 $retval; } // -------------------------------------------------------------------- /** * Error * * Returns an array containing code and message of the last * database error that has occurred. * * @return array */ public function error() { return array('code' => cubrid_errno($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); } }