--- /dev/null
+<?php
+/**
+* ownCloud
+*
+* @author Michael Gapczynski
+* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or any later version.
+*
+* This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
+*
+* You should have received a copy of the GNU Affero General Public
+* License along with this library. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace OC\Files\Cache;
+
+/**
+ * check the storage backends for updates and change the cache accordingly
+ */
+class Shared_Watcher extends Watcher {
+
+ /**
+ * check $path for updates
+ *
+ * @param string $path
+ */
+ public function checkUpdate($path) {
+ if ($path != '') {
+ parent::checkUpdate($path);
+ }
+ }
+
+ /**
+ * remove deleted files in $path from the cache
+ *
+ * @param string $path
+ */
+ public function cleanFolder($path) {
+ if ($path != '') {
+ parent::cleanFolder($path);
+ }
+ }
+
+}
\ No newline at end of file