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Direktori : /home2/selectio/public_html/system/database/drivers/pdo/subdrivers/ |
Current File : /home2/selectio/public_html/system/database/drivers/pdo/subdrivers/pdo_sqlite_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 3.0.0 * @filesource */ defined('BASEPATH') OR exit('No direct script access allowed'); /** * PDO SQLite 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_sqlite_driver extends CI_DB_pdo_driver { /** * Sub-driver * * @var string */ public $subdriver = 'sqlite'; // -------------------------------------------------------------------- /** * ORDER BY random keyword * * @var array */ protected $_random_keyword = array('RANDOM()', 'RANDOM()'); // -------------------------------------------------------------------- /** * 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)) { $this->dsn = 'sqlite:'; if (empty($this->database) && empty($this->hostname)) { $this->database = ':memory:'; } $this->database = empty($this->database) ? $this->hostname : $this->database; } } // -------------------------------------------------------------------- /** * 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) { $sql = 'SELECT "NAME" FROM "SQLITE_MASTER" WHERE "TYPE" = \'table\''; if ($prefix_limit === TRUE && $this->dbprefix !== '') { return $sql.' AND "NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' " .sprintf($this->_like_escape_str, $this->_like_escape_chr); } return $sql; } // -------------------------------------------------------------------- /** * Fetch Field Names * * @param string $table Table name * @return array */ public function list_fields($table) { if (($result = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE) { return FALSE; } $fields = array(); foreach ($result->result_array() as $row) { $fields[] = $row['name']; } return $fields; } // -------------------------------------------------------------------- /** * Returns an object with field data * * @param string $table * @return array */ public function field_data($table) { if (($query = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE) { return FALSE; } $query = $query->result_array(); if (empty($query)) { return FALSE; } $retval = array(); for ($i = 0, $c = count($query); $i < $c; $i++) { $retval[$i] = new stdClass(); $retval[$i]->name = $query[$i]['name']; $retval[$i]->type = $query[$i]['type']; $retval[$i]->max_length = NULL; $retval[$i]->default = $query[$i]['dflt_value']; $retval[$i]->primary_key = isset($query[$i]['pk']) ? (int) $query[$i]['pk'] : 0; } return $retval; } // -------------------------------------------------------------------- /** * Replace statement * * @param string $table Table name * @param array $keys INSERT keys * @param array $values INSERT values * @return string */ protected function _replace($table, $keys, $values) { return 'INSERT OR '.parent::_replace($table, $keys, $values); } // -------------------------------------------------------------------- /** * Truncate statement * * Generates a platform-specific truncate string from the supplied data * * If the database does not support the TRUNCATE statement, * then this method maps to 'DELETE FROM table' * * @param string $table * @return string */ protected function _truncate($table) { return 'DELETE FROM '.$table; } }