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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 MediumSpecificBagOStuff { |
30 | public function __construct( array $params = [] ) { |
31 | parent::__construct( $params ); |
32 | |
33 | $this->attrMap[self::ATTR_DURABILITY] = self::QOS_DURABILITY_NONE; |
34 | } |
35 | |
36 | protected function doGet( $key, $flags = 0, &$casToken = null ) { |
37 | $casToken = null; |
38 | |
39 | return false; |
40 | } |
41 | |
42 | protected function doSet( $key, $value, $exptime = 0, $flags = 0 ) { |
43 | return true; |
44 | } |
45 | |
46 | protected function doDelete( $key, $flags = 0 ) { |
47 | return true; |
48 | } |
49 | |
50 | protected function doAdd( $key, $value, $exptime = 0, $flags = 0 ) { |
51 | return true; |
52 | } |
53 | |
54 | protected function doIncrWithInit( $key, $exptime, $step, $init, $flags ) { |
55 | // faster |
56 | return $init; |
57 | } |
58 | |
59 | public function merge( $key, callable $callback, $exptime = 0, $attempts = 10, $flags = 0 ) { |
60 | // faster |
61 | return true; |
62 | } |
63 | } |