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- 06.01.2017
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ResourceInterface.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 namespace Symfony\Component\Config\Resource;
13
14 /**
15 * ResourceInterface is the interface that must be implemented by all Resource classes.
16 *
17 * @author Fabien Potencier <fabien@symfony.com>
18 */
19 interface ResourceInterface
20 {
21 /**
22 * Returns a string representation of the Resource.
23 *
24 * This method is necessary to allow for resource de-duplication, for example by means
25 * of array_unique(). The string returned need not have a particular meaning, but has
26 * to be identical for different ResourceInterface instances referring to the same
27 * resource; and it should be unlikely to collide with that of other, unrelated
28 * resource instances.
29 *
30 * @return string A string representation unique to the underlying Resource
31 */
32 public function __toString();
33
34 /**
35 * Returns true if the resource has not been updated since the given timestamp.
36 *
37 * @param int $timestamp The last time the resource was loaded
38 *
39 * @return bool True if the resource has not been updated, false otherwise
40 *
41 * @deprecated since 2.8, to be removed in 3.0. If your resource can check itself for
42 * freshness implement the SelfCheckingResourceInterface instead.
43 */
44 public function isFresh($timestamp);
45
46 /**
47 * Returns the tied resource.
48 *
49 * @return mixed The resource
50 *
51 * @deprecated since 2.8, to be removed in 3.0. As there are many different kinds of resource,
52 * a single getResource() method does not make sense at the interface level. You
53 * can still call getResource() on implementing classes, probably after performing
54 * a type check. If you know the concrete type of Resource at hand, the return value
55 * of this method may make sense to you.
56 */
57 public function getResource();
58 }
59