MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / includes / libs / objectcache / EmptyBagOStuff.php

diff --git a/includes/libs/objectcache/EmptyBagOStuff.php b/includes/libs/objectcache/EmptyBagOStuff.php
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+++ b/includes/libs/objectcache/EmptyBagOStuff.php
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+<?php
+/**
+ * Dummy object caching.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Cache
+ */
+
+/**
+ * A BagOStuff object with no objects in it. Used to provide a no-op object to calling code.
+ *
+ * @ingroup Cache
+ */
+class EmptyBagOStuff extends BagOStuff {
+       protected function doGet( $key, $flags = 0 ) {
+               return false;
+       }
+
+       public function add( $key, $value, $exp = 0 ) {
+               return true;
+       }
+
+       public function set( $key, $value, $exp = 0, $flags = 0 ) {
+               return true;
+       }
+
+       public function delete( $key ) {
+               return true;
+       }
+
+       public function merge( $key, callable $callback, $exptime = 0, $attempts = 10, $flags = 0 ) {
+               return true; // faster
+       }
+}