diff core/lib/Drupal/Core/Cache/NullBackend.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/Cache/NullBackend.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,92 @@
+<?php
+
+namespace Drupal\Core\Cache;
+
+/**
+ * Defines a stub cache implementation.
+ *
+ * The stub implementation is needed when database access is not yet available.
+ * Because Drupal's caching system never requires that cached data be present,
+ * these stub functions can short-circuit the process and sidestep the need for
+ * any persistent storage. Using this cache implementation during normal
+ * operations would have a negative impact on performance.
+ *
+ * This also can be used for testing purposes.
+ *
+ * @ingroup cache
+ */
+class NullBackend implements CacheBackendInterface {
+
+  /**
+   * Constructs a NullBackend object.
+   *
+   * @param string $bin
+   *   The cache bin for which the object is created.
+   */
+  public function __construct($bin) {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function get($cid, $allow_invalid = FALSE) {
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getMultiple(&$cids, $allow_invalid = FALSE) {
+    return [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function set($cid, $data, $expire = Cache::PERMANENT, array $tags = []) {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setMultiple(array $items = []) {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function delete($cid) {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function deleteMultiple(array $cids) {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function deleteAll() {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function invalidate($cid) {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function invalidateMultiple(array $cids) {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function invalidateAll() {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function garbageCollection() {}
+
+  /**
+   * {@inheritdoc}
+   */
+  public function removeBin() {}
+
+}