Core/src/Database/drivers/sqlsrv/sqlsrv_forge.php

142 lines
3.6 KiB
PHP

<?php
/**
* FuzeWorks.
*
* The FuzeWorks MVC PHP FrameWork
*
* Copyright (C) 2015 TechFuze
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @author TechFuze
* @copyright Copyright (c) 2013 - 2016, Techfuze. (http://techfuze.net)
* @copyright Copyright (c) 1996 - 2015, Free Software Foundation, Inc. (http://www.fsf.org/)
* @license http://opensource.org/licenses/GPL-3.0 GPLv3 License
*
* @link http://techfuze.net/fuzeworks
* @since Version 0.0.1
*
* @version Version 1.0.0
*/
/**
* SQLSRV Forge Class
*
* Converted from CodeIgniter.
*
* @package FuzeWorks
* @category Database
* @author EllisLab Dev Team
* @link https://codeigniter.com/user_guide/database/
* @license http://opensource.org/licenses/MIT MIT License
*/
class FW_DB_sqlsrv_forge extends FW_DB_forge {
/**
* CREATE TABLE IF statement
*
* @var string
*/
protected $_create_table_if = "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
/**
* DROP TABLE IF statement
*
* @var string
*/
protected $_drop_table_if = "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
/**
* UNSIGNED support
*
* @var array
*/
protected $_unsigned = array(
'TINYINT' => 'SMALLINT',
'SMALLINT' => 'INT',
'INT' => 'BIGINT',
'REAL' => 'FLOAT'
);
// --------------------------------------------------------------------
/**
* 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('ADD', 'DROP'), TRUE))
{
return parent::_alter_table($alter_type, $table, $field);
}
$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN ';
$sqls = array();
for ($i = 0, $c = count($field); $i < $c; $i++)
{
$sqls[] = $sql.$this->_process_column($field[$i]);
}
return $sqls;
}
// --------------------------------------------------------------------
/**
* Field attribute TYPE
*
* Performs a data type mapping between different databases.
*
* @param array &$attributes
* @return void
*/
protected function _attr_type(&$attributes)
{
switch (strtoupper($attributes['TYPE']))
{
case 'MEDIUMINT':
$attributes['TYPE'] = 'INTEGER';
$attributes['UNSIGNED'] = FALSE;
return;
case 'INTEGER':
$attributes['TYPE'] = 'INT';
return;
default: return;
}
}
// --------------------------------------------------------------------
/**
* Field attribute AUTO_INCREMENT
*
* @param array &$attributes
* @param array &$field
* @return void
*/
protected function _attr_auto_increment(&$attributes, &$field)
{
if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE)
{
$field['auto_increment'] = ' IDENTITY(1,1)';
}
}
}