Merge "Improve docs for Title::getInternalURL/getCanonicalURL"
[lhc/web/wiklou.git] / includes / libs / objectcache / EmptyBagOStuff.php
1 <?php
2 /**
3 * Dummy object caching.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
19 *
20 * @file
21 * @ingroup Cache
22 */
23
24 /**
25 * A BagOStuff object with no objects in it. Used to provide a no-op object to calling code.
26 *
27 * @ingroup Cache
28 */
29 class EmptyBagOStuff extends BagOStuff {
30 protected function doGet( $key, $flags = 0, &$casToken = null ) {
31 $casToken = null;
32
33 return false;
34 }
35
36 public function add( $key, $value, $exp = 0, $flags = 0 ) {
37 return true;
38 }
39
40 public function set( $key, $value, $exp = 0, $flags = 0 ) {
41 return true;
42 }
43
44 public function delete( $key, $flags = 0 ) {
45 return true;
46 }
47
48 public function incr( $key, $value = 1 ) {
49 return false;
50 }
51
52 public function merge( $key, callable $callback, $exptime = 0, $attempts = 10, $flags = 0 ) {
53 return true; // faster
54 }
55 }