<?php
/**
* @version $Id: mssql.adapter.php 547 2011-07-30 08:12:50Z datahell $
* @package Elxis
* @subpackage Database
* @copyright Copyright (c) 2006-2012 Elxis CMS (http://www.elxis.org). All rights reserved.
* @license Elxis Public License ( http://www.elxis.org/elxis-public-license.html )
* @author Elxis Team ( http://www.elxis.org )
* @description Elxis CMS is free software. Read the license for copyright notices and details
*/
defined('_ELXIS_') or die ('Direct access to this location is not allowed.');
class elxisMssqlAdapter extends elxisDbAdapter {
/*************************************/
/* CALL THE PARENT CLASS CONSTRUCTOR */
/*************************************/
public function __construct($pdo=null) {
parent::__construct($pdo);
}
/*************************************/
/* ADD LIMIT/OFFSET TO SQL STATEMENT */
/*************************************/
public function addLimit($sql, $offset=-1, $limit=-1) {
if ($limit <= 0) { return $sql; }
if ($offset < 0) { $offset = 0; }
$orderby = stristr($sql, 'ORDER BY');
if ($orderby !== false) {
$sort = (stripos($orderby, 'desc') !== false) ? 'desc' : 'asc';
$order = str_ireplace('ORDER BY', '', $orderby);
$order = eUTF::trim(preg_replace('/ASC|DESC/i', '', $order));
}
$sql = preg_replace('/^SELECT\s/i', 'SELECT TOP '.($limit+$offset).' ', $sql);
$sql = 'SELECT * FROM (SELECT TOP '.$limit.' * FROM ('.$sql.') AS inner_tbl';
if ($orderby !== false) {
$sql .= ' ORDER BY '.$order.' ';
$sql .= (stripos($sort, 'asc') !== false) ? 'DESC' : 'ASC';
}
$sql .= ') AS outer_tbl';
if ($orderby !== false) {
$sql .= ' ORDER BY '.$order.' '.$sort;
}
return $sql;
}
/*****************************************************************/
/* GET THE LAST ID GENERATED BY AN IDENTITY/AUTOINCREMENT COLUMN */
/*****************************************************************/
public function lastInsertId($tableName=null, $primaryKey=null) {
$sql = 'SELECT SCOPE_IDENTITY()';
return (int)$this->pdo->query($sql)->fetchColumn();
}
/****************************/
/* LIST ALL DATABASE TABLES */
/****************************/
public function listTables() {
$sql = "SELECT name FROM sysobjects WHERE type = 'U' ORDER BY name";
$stmt = $this->pdo->prepare($sql);
$stmt->execute();
return $stmt->fetchCol();
}
/***********************************/
/* BACKUP DATABASE (NOT SUPPORTED) */
/***********************************/
public function backup($params) {
return -1;
}
}
?>