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doctrine2/lib/Doctrine/Query/ProductionParamHolder.php

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2008-05-24 22:18:37 +04:00
<?php
/*
* $Id$
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.org>.
*/
/**
* Production variables holder
*
* @package Doctrine
* @subpackage Query
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Janne Vanhala <jpvanhal@cc.hut.fi>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link http://www.phpdoctrine.org
* @since 2.0
2008-05-24 22:18:37 +04:00
* @version $Revision$
*/
class Doctrine_Query_ProductionParamHolder
{
protected static $_instance;
protected $_data;
protected function __construct()
{
$this->free();
}
public static function create()
{
if ( ! isset(self::$_instance)) {
self::$_instance = new self;
}
return self::$_instance;
}
public function free()
{
$this->_data = array();
}
public function set($offset, $value)
{
$this->_data[$offset] = $value;
}
public function get($offset)
{
return isset($this->_data[$offset]) ? $this->_data[$offset] : null;
}
public function has($offset)
{
return isset($this->_data[$offset]);
}
public function remove($offset)
{
if ($this->has($offset)) {
$this->_data[$offset] = null;
unset($this->_data[$offset]);
}
}
}