View file File name : pdo_4d_driver.php Content :<?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 3.0.0 * @filesource */ defined('BASEPATH') OR exit('No direct script access allowed'); /** * PDO 4D 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 https://codeigniter.com/user_guide/database/ */ class CI_DB_pdo_4d_driver extends CI_DB_pdo_driver { /** * Sub-driver * * @var string */ public $subdriver = '4d'; /** * Identifier escape character * * @var string[] */ protected $_escape_char = array('[', ']'); // -------------------------------------------------------------------- /** * Class constructor * * Builds the DSN if not already set. * * @param array $params * @return void */ public function __construct($params) { parent::__construct($params); if (empty($this->dsn)) { $this->dsn = '4D:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname); empty($this->port) OR $this->dsn .= ';port='.$this->port; empty($this->database) OR $this->dsn .= ';dbname='.$this->database; empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set; } elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 3) === FALSE) { $this->dsn .= ';charset='.$this->char_set; } } // -------------------------------------------------------------------- /** * 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) { $sql = 'SELECT '.$this->escape_identifiers('TABLE_NAME').' FROM '.$this->escape_identifiers('_USER_TABLES'); if ($prefix_limit === TRUE && $this->dbprefix !== '') { $sql .= ' WHERE '.$this->escape_identifiers('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 'SELECT '.$this->escape_identifiers('COLUMN_NAME').' FROM '.$this->escape_identifiers('_USER_COLUMNS') .' WHERE '.$this->escape_identifiers('TABLE_NAME').' = '.$this->escape($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 * FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE).' LIMIT 1'; } // -------------------------------------------------------------------- /** * 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); } // -------------------------------------------------------------------- /** * 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); } // -------------------------------------------------------------------- /** * LIMIT * * Generates a platform-specific LIMIT clause * * @param string $sql SQL Query * @return string */ protected function _limit($sql) { return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : ''); } }