tims-todo/system/database/drivers/pdo/subdrivers/pdo_4d_forge.php

209 lines
4.6 KiB
PHP
Executable File

<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.2.4 or newer
*
* NOTICE OF LICENSE
*
* Licensed under the Open Software License version 3.0
*
* This source file is subject to the Open Software License (OSL 3.0) that is
* bundled with this package in the files license.txt / license.rst. It is
* also available through the world wide web at this URL:
* http://opensource.org/licenses/OSL-3.0
* If you did not receive a copy of the license and are unable to obtain it
* through the world wide web, please send an email to
* licensing@ellislab.com so we can send you a copy immediately.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
* @link http://codeigniter.com
* @since Version 2.1.0
* @filesource
*/
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* PDO 4D Forge Class
*
* @category Database
* @author EllisLab Dev Team
* @link http://codeigniter.com/user_guide/database/
*/
class CI_DB_pdo_4d_forge extends CI_DB_4d_forge {
/**
* CREATE DATABASE statement
*
* @var string
*/
protected $_create_database = 'CREATE SCHEMA %s';
/**
* DROP DATABASE statement
*
* @var string
*/
protected $_drop_database = 'DROP SCHEMA %s';
/**
* CREATE TABLE IF statement
*
* @var string
*/
protected $_create_table_if = 'CREATE TABLE IF NOT EXISTS';
/**
* RENAME TABLE statement
*
* @var string
*/
protected $_rename_table = FALSE;
/**
* DROP TABLE IF statement
*
* @var string
*/
protected $_drop_table_if = 'DROP TABLE IF EXISTS';
/**
* UNSIGNED support
*
* @var array
*/
protected $_unsigned = array(
'INT16' => 'INT',
'SMALLINT' => 'INT',
'INT' => 'INT64',
'INT32' => 'INT64'
);
/**
* DEFAULT value representation in CREATE/ALTER TABLE statements
*
* @var string
*/
protected $_default = FALSE;
// --------------------------------------------------------------------
/**
* 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);
}
// No method of modifying columns is supported
return FALSE;
}
// --------------------------------------------------------------------
/**
* 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']
.$field['auto_increment'];
}
// --------------------------------------------------------------------
/**
* Field attribute TYPE
*
* Performs a data type mapping between different databases.
*
* @param array &$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 'INTEGER':
$attributes['TYPE'] = 'INT';
return;
case 'BIGINT':
$attribites['TYPE'] = 'INT64';
return;
default: return;
}
}
// --------------------------------------------------------------------
/**
* Field attribute UNIQUE
*
* @param array &$attributes
* @param array &$field
* @return void
*/
protected function _attr_unique(&$attributes, &$field)
{
if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
{
$field['unique'] = ' UNIQUE';
// UNIQUE must be used with NOT NULL
$field['null'] = ' NOT NULL';
}
}
// --------------------------------------------------------------------
/**
* Field attribute AUTO_INCREMENT
*
* @param array &$attributes
* @param array &$field
* @return void
*/
protected function _attr_auto_increment(&$attributes, &$field)
{
if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
{
if (stripos($field['type'], 'int') !== FALSE)
{
$field['auto_increment'] = ' AUTO_INCREMENT';
}
elseif (strcasecmp($field['type'], 'UUID') === 0)
{
$field['auto_increment'] = ' AUTO_GENERATE';
}
}
}
}
/* End of file pdo_4d_forge.php */
/* Location: ./system/database/drivers/pdo/subdrivers/pdo_4d_forge.php */