annotate core/lib/Drupal/Core/Cache/NullBackend.php @ 19:fa3358dc1485 tip

Add ndrum files
author Chris Cannam
date Wed, 28 Aug 2019 13:14:47 +0100
parents 4c8ae668cc8c
children
rev   line source
Chris@0 1 <?php
Chris@0 2
Chris@0 3 namespace Drupal\Core\Cache;
Chris@0 4
Chris@0 5 /**
Chris@0 6 * Defines a stub cache implementation.
Chris@0 7 *
Chris@0 8 * The stub implementation is needed when database access is not yet available.
Chris@0 9 * Because Drupal's caching system never requires that cached data be present,
Chris@0 10 * these stub functions can short-circuit the process and sidestep the need for
Chris@0 11 * any persistent storage. Using this cache implementation during normal
Chris@0 12 * operations would have a negative impact on performance.
Chris@0 13 *
Chris@0 14 * This also can be used for testing purposes.
Chris@0 15 *
Chris@0 16 * @ingroup cache
Chris@0 17 */
Chris@0 18 class NullBackend implements CacheBackendInterface {
Chris@0 19
Chris@0 20 /**
Chris@0 21 * Constructs a NullBackend object.
Chris@0 22 *
Chris@0 23 * @param string $bin
Chris@0 24 * The cache bin for which the object is created.
Chris@0 25 */
Chris@0 26 public function __construct($bin) {}
Chris@0 27
Chris@0 28 /**
Chris@0 29 * {@inheritdoc}
Chris@0 30 */
Chris@0 31 public function get($cid, $allow_invalid = FALSE) {
Chris@0 32 return FALSE;
Chris@0 33 }
Chris@0 34
Chris@0 35 /**
Chris@0 36 * {@inheritdoc}
Chris@0 37 */
Chris@0 38 public function getMultiple(&$cids, $allow_invalid = FALSE) {
Chris@0 39 return [];
Chris@0 40 }
Chris@0 41
Chris@0 42 /**
Chris@0 43 * {@inheritdoc}
Chris@0 44 */
Chris@0 45 public function set($cid, $data, $expire = Cache::PERMANENT, array $tags = []) {}
Chris@0 46
Chris@0 47 /**
Chris@0 48 * {@inheritdoc}
Chris@0 49 */
Chris@0 50 public function setMultiple(array $items = []) {}
Chris@0 51
Chris@0 52 /**
Chris@0 53 * {@inheritdoc}
Chris@0 54 */
Chris@0 55 public function delete($cid) {}
Chris@0 56
Chris@0 57 /**
Chris@0 58 * {@inheritdoc}
Chris@0 59 */
Chris@0 60 public function deleteMultiple(array $cids) {}
Chris@0 61
Chris@0 62 /**
Chris@0 63 * {@inheritdoc}
Chris@0 64 */
Chris@0 65 public function deleteAll() {}
Chris@0 66
Chris@0 67 /**
Chris@0 68 * {@inheritdoc}
Chris@0 69 */
Chris@0 70 public function invalidate($cid) {}
Chris@0 71
Chris@0 72 /**
Chris@0 73 * {@inheritdoc}
Chris@0 74 */
Chris@0 75 public function invalidateMultiple(array $cids) {}
Chris@0 76
Chris@0 77 /**
Chris@0 78 * {@inheritdoc}
Chris@0 79 */
Chris@0 80 public function invalidateAll() {}
Chris@0 81
Chris@0 82 /**
Chris@0 83 * {@inheritdoc}
Chris@0 84 */
Chris@0 85 public function garbageCollection() {}
Chris@0 86
Chris@0 87 /**
Chris@0 88 * {@inheritdoc}
Chris@0 89 */
Chris@0 90 public function removeBin() {}
Chris@0 91
Chris@0 92 }