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Direktori : /home2/selectio/public_html/system/database/drivers/ibase/ |
Current File : /home2/selectio/public_html/system/database/drivers/ibase/ibase_forge.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'); /** * Interbase/Firebird Forge Class * * @category Database * @author EllisLab Dev Team * @link https://codeigniter.com/user_guide/database/ */ class CI_DB_ibase_forge extends CI_DB_forge { /** * CREATE TABLE IF statement * * @var string */ protected $_create_table_if = FALSE; /** * RENAME TABLE statement * * @var string */ protected $_rename_table = FALSE; /** * DROP TABLE IF statement * * @var string */ protected $_drop_table_if = FALSE; /** * UNSIGNED support * * @var array */ protected $_unsigned = array( 'SMALLINT' => 'INTEGER', 'INTEGER' => 'INT64', 'FLOAT' => 'DOUBLE PRECISION' ); /** * NULL value representation in CREATE/ALTER TABLE statements * * @var string */ protected $_null = 'NULL'; // -------------------------------------------------------------------- /** * Create database * * @param string $db_name * @return bool */ public function create_database($db_name) { // Firebird databases are flat files, so a path is required // Hostname is needed for remote access empty($this->db->hostname) OR $db_name = $this->hostname.':'.$db_name; return parent::create_database('"'.$db_name.'"'); } // -------------------------------------------------------------------- /** * Drop database * * @param string $db_name (ignored) * @return bool */ public function drop_database($db_name) { if ( ! ibase_drop_db($this->conn_id)) { return ($this->db->db_debug) ? $this->db->display_error('db_unable_to_drop') : FALSE; } elseif ( ! empty($this->db->data_cache['db_names'])) { $key = array_search(strtolower($this->db->database), array_map('strtolower', $this->db->data_cache['db_names']), TRUE); if ($key !== FALSE) { unset($this->db->data_cache['db_names'][$key]); } } return TRUE; } // -------------------------------------------------------------------- /** * ALTER TABLE * * @param string $alter_type ALTER type * @param string $table Table name * @param mixed $field Column definition * @return string|string[] */ protected function _alter_table($alter_type, $table, $field) { if (in_array($alter_type, array('DROP', 'ADD'), TRUE)) { return parent::_alter_table($alter_type, $table, $field); } $sql = 'ALTER TABLE '.$this->db->escape_identifiers($table); $sqls = array(); for ($i = 0, $c = count($field); $i < $c; $i++) { if ($field[$i]['_literal'] !== FALSE) { return FALSE; } if (isset($field[$i]['type'])) { $sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identififers($field[$i]['name']) .' TYPE '.$field[$i]['type'].$field[$i]['length']; } if ( ! empty($field[$i]['default'])) { $sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name']) .' SET DEFAULT '.$field[$i]['default']; } if (isset($field[$i]['null'])) { $sqls[] = 'UPDATE "RDB$RELATION_FIELDS" SET "RDB$NULL_FLAG" = ' .($field[$i]['null'] === TRUE ? 'NULL' : '1') .' WHERE "RDB$FIELD_NAME" = '.$this->db->escape($field[$i]['name']) .' AND "RDB$RELATION_NAME" = '.$this->db->escape($table); } if ( ! empty($field[$i]['new_name'])) { $sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name']) .' TO '.$this->db->escape_identifiers($field[$i]['new_name']); } } return $sqls; } // -------------------------------------------------------------------- /** * Process column * * @param array $field * @return string */ protected function _process_column($field) { return $this->db->escape_identifiers($field['name']) .' '.$field['type'].$field['length'] .$field['null'] .$field['unique'] .$field['default']; } // -------------------------------------------------------------------- /** * Field attribute TYPE * * Performs a data type mapping between different databases. * * @param array &$attributes * @return void */ protected function _attr_type(&$attributes) { switch (strtoupper($attributes['TYPE'])) { case 'TINYINT': $attributes['TYPE'] = 'SMALLINT'; $attributes['UNSIGNED'] = FALSE; return; case 'MEDIUMINT': $attributes['TYPE'] = 'INTEGER'; $attributes['UNSIGNED'] = FALSE; return; case 'INT': $attributes['TYPE'] = 'INTEGER'; return; case 'BIGINT': $attributes['TYPE'] = 'INT64'; return; default: return; } } // -------------------------------------------------------------------- /** * Field attribute AUTO_INCREMENT * * @param array &$attributes * @param array &$field * @return void */ protected function _attr_auto_increment(&$attributes, &$field) { // Not supported } }