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<?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 Informix Forge Class
*
* @category Database
* @author EllisLab Dev Team
* @link http://codeigniter.com/user_guide/database/
*/
class CI_DB_pdo_informix_forge extends CI_DB_pdo_forge {
/**
* RENAME TABLE statement
*
* @var string
*/
protected $_rename_table = 'RENAME TABLE %s TO %s';
/**
* UNSIGNED support
*
* @var array
*/
protected $_unsigned = array(
'SMALLINT' => 'INTEGER',
'INT' => 'BIGINT',
'INTEGER' => 'BIGINT',
'REAL' => 'DOUBLE PRECISION',
'SMALLFLOAT' => 'DOUBLE PRECISION'
);
/**
* DEFAULT value representation in CREATE/ALTER TABLE statements
*
* @var string
*/
protected $_default = ', ';
// --------------------------------------------------------------------
/**
* 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, $field)
{
if ($alter_type === 'CHANGE')
{
$alter_type = 'MODIFY';
}
return parent::_alter_table($alter_type, $table, $field);
}
// --------------------------------------------------------------------
/**
* Field attribute TYPE
*
* Performs a data type mapping between different databases.
*
* @param array &$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 'BYTE':
case 'TEXT':
case 'BLOB':
case 'CLOB':
$attributes['UNIQUE'] = FALSE;
if (isset($attributes['DEFAULT']))
{
unset($attributes['DEFAULT']);
}
return;
default: return;
}
}
// --------------------------------------------------------------------
/**
* Field attribute UNIQUE
*
* @param array &$attributes
* @param array &$field
* @return void
*/
protected function _attr_unique(&$attributes, &$field)
{
if ( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE)
{
$field['unique'] = ' UNIQUE CONSTRAINT '.$this->db->escape_identifiers($field['name']);
}
}
// --------------------------------------------------------------------
/**
* Field attribute AUTO_INCREMENT
*
* @param array &$attributes
* @param array &$field
* @return void
*/
protected function _attr_auto_increment(&$attributes, &$field)
{
// Not supported
}
}
/* End of file pdo_informix_forge.php */
/* Location: ./system/database/drivers/pdo/subdrivers/pdo_informix_forge.php */
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