<?php

/*

 * This file is part of the Symfony package.

 *

 * (c) Fabien Potencier <fabien@symfony.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Symfony\Component\Config\Resource;

/**

 * ResourceInterface is the interface that must be implemented by all Resource classes.

 *

 * @author Fabien Potencier <fabien@symfony.com>

 */

interface ResourceInterface

{

    /**

     * Returns a string representation of the Resource.

     *

     * @return string A string representation of the Resource

     */

    function __toString();

    /**

     * Returns true if the resource has not been updated since the given timestamp.

     *

     * @param integer $timestamp The last time the resource was loaded

     *

     * @return Boolean true if the resource has not been updated, false otherwise

     */

    function isFresh($timestamp);

    /**

     * Returns the resource tied to this Resource.

     *

     * @return mixed The resource

     */

    function getResource();

}