2017-11-07 00:45:06 +00:00
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<?php
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP
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*
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* This content is released under the MIT License (MIT)
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*
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2021-11-06 19:05:55 +00:00
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* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
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2017-11-07 00:45:06 +00:00
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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2021-11-06 19:05:55 +00:00
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* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
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* @license https://opensource.org/licenses/MIT MIT License
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2017-11-07 00:45:06 +00:00
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* @link https://codeigniter.com
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* @since Version 3.0.0
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* @filesource
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*/
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defined('BASEPATH') OR exit('No direct script access allowed');
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/**
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* PDO 4D Database Adapter Class
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*
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* Note: _DB is an extender class that the app controller
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* creates dynamically based on whether the query builder
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* class is being used or not.
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*
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* @package CodeIgniter
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* @subpackage Drivers
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* @category Database
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* @author EllisLab Dev Team
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2021-11-06 19:05:55 +00:00
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* @link https://codeigniter.com/userguide3/database/
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2017-11-07 00:45:06 +00:00
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*/
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class CI_DB_pdo_4d_driver extends CI_DB_pdo_driver {
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/**
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* Sub-driver
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*
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* @var string
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*/
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public $subdriver = '4d';
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/**
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* Identifier escape character
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*
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* @var string[]
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*/
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protected $_escape_char = array('[', ']');
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// --------------------------------------------------------------------
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/**
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* Class constructor
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*
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* Builds the DSN if not already set.
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*
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* @param array $params
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* @return void
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*/
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public function __construct($params)
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{
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parent::__construct($params);
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if (empty($this->dsn))
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{
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$this->dsn = '4D:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
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empty($this->port) OR $this->dsn .= ';port='.$this->port;
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empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
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empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
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}
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elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 3) === FALSE)
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{
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$this->dsn .= ';charset='.$this->char_set;
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}
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}
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// --------------------------------------------------------------------
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/**
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* Show table query
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*
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* Generates a platform-specific query string so that the table names can be fetched
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*
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* @param bool $prefix_limit
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* @return string
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*/
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protected function _list_tables($prefix_limit = FALSE)
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{
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$sql = 'SELECT '.$this->escape_identifiers('TABLE_NAME').' FROM '.$this->escape_identifiers('_USER_TABLES');
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if ($prefix_limit === TRUE && $this->dbprefix !== '')
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{
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$sql .= ' WHERE '.$this->escape_identifiers('TABLE_NAME')." LIKE '".$this->escape_like_str($this->dbprefix)."%' "
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.sprintf($this->_like_escape_str, $this->_like_escape_chr);
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}
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return $sql;
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}
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// --------------------------------------------------------------------
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/**
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* Show column query
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*
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* Generates a platform-specific query string so that the column names can be fetched
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*
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* @param string $table
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* @return string
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*/
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protected function _list_columns($table = '')
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{
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return 'SELECT '.$this->escape_identifiers('COLUMN_NAME').' FROM '.$this->escape_identifiers('_USER_COLUMNS')
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.' WHERE '.$this->escape_identifiers('TABLE_NAME').' = '.$this->escape($table);
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}
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// --------------------------------------------------------------------
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/**
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* Field data query
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*
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* Generates a platform-specific query so that the column data can be retrieved
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*
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* @param string $table
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* @return string
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*/
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protected function _field_data($table)
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{
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return 'SELECT * FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE).' LIMIT 1';
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}
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// --------------------------------------------------------------------
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/**
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* Update statement
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*
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* Generates a platform-specific update string from the supplied data
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*
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* @param string $table
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* @param array $values
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* @return string
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*/
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protected function _update($table, $values)
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{
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$this->qb_limit = FALSE;
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$this->qb_orderby = array();
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return parent::_update($table, $values);
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}
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// --------------------------------------------------------------------
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/**
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* Delete statement
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*
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* Generates a platform-specific delete string from the supplied data
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*
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* @param string $table
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* @return string
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*/
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protected function _delete($table)
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{
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$this->qb_limit = FALSE;
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return parent::_delete($table);
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}
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// --------------------------------------------------------------------
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/**
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* LIMIT
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*
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* Generates a platform-specific LIMIT clause
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*
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* @param string $sql SQL Query
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* @return string
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*/
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protected function _limit($sql)
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{
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return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
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}
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}
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