133 lines
3.2 KiB
PHP
133 lines
3.2 KiB
PHP
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<?php
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP 5.2.4 or newer
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*
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* NOTICE OF LICENSE
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*
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* Licensed under the Open Software License version 3.0
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*
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* This source file is subject to the Open Software License (OSL 3.0) that is
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* bundled with this package in the files license.txt / license.rst. It is
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* also available through the world wide web at this URL:
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* http://opensource.org/licenses/OSL-3.0
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* If you did not receive a copy of the license and are unable to obtain it
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* through the world wide web, please send an email to
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* licensing@ellislab.com so we can send you a copy immediately.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
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* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
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* @link http://codeigniter.com
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* @since Version 2.1.0
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* @filesource
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*/
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defined('BASEPATH') OR exit('No direct script access allowed');
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/**
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* PDO Oracle Forge Class
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*
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* @category Database
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* @author EllisLab Dev Team
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* @link http://codeigniter.com/user_guide/database/
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*/
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class CI_DB_pdo_oci_forge extends CI_DB_pdo_forge {
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/**
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* CREATE DATABASE statement
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*
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* @var string
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*/
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protected $_create_database = FALSE;
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/**
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* DROP DATABASE statement
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*
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* @var string
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*/
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protected $_drop_database = FALSE;
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/**
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* CREATE TABLE IF statement
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*
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* @var string
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*/
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protected $_create_table_if = 'CREATE TABLE IF NOT EXISTS';
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/**
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* UNSIGNED support
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*
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* @var bool|array
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*/
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protected $_unsigned = FALSE;
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// --------------------------------------------------------------------
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/**
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* ALTER TABLE
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*
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* @param string $alter_type ALTER type
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* @param string $table Table name
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* @param mixed $field Column definition
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* @return string|string[]
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*/
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protected function _alter_table($alter_type, $table, $field)
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{
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if ($alter_type === 'DROP')
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{
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return parent::_alter_table($alter_type, $table, $field);
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}
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elseif ($alter_type === 'CHANGE')
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{
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$alter_type = 'MODIFY';
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}
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$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
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$sqls = array();
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for ($i = 0, $c = count($field); $i < $c; $i++)
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{
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if ($field[$i]['_literal'] !== FALSE)
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{
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$field[$i] = "\n\t".$field[$i]['_literal'];
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}
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else
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{
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$field[$i]['_literal'] = "\n\t".$this->_process_column($field[$i]);
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if ($alter_type === 'MODIFY' && ! empty($field[$i]['new_name']))
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{
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$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
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.' '.$this->db->escape_identifiers($field[$i]['new_name']);
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}
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}
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}
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$sql .= ' '.$alter_type.' ';
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$sql .= (count($field) === 1)
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? $field[0]
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: '('.implode(',', $field).')';
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// RENAME COLUMN must be executed after MODIFY
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array_unshift($sqls, $sql);
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return $sql;
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}
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// --------------------------------------------------------------------
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/**
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* Field attribute AUTO_INCREMENT
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*
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* @param array &$attributes
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* @param array &$field
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* @return void
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*/
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protected function _attr_auto_increment(&$attributes, &$field)
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{
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// Not supported - sequences and triggers must be used instead
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}
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}
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/* End of file pdo_oci_forge.php */
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/* Location: ./system/database/drivers/pdo/subdrivers/pdo_oci_forge.php */
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