1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
<?php
/**
* 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
*/
namespace Wikimedia\ObjectCache;
/**
* No-op implementation that stores nothing.
*
* Used as placeholder or fallback when disabling caching.
*
* This can be used in configuration via the CACHE_NONE constant.
*
* @ingroup Cache
*/
class EmptyBagOStuff extends MediumSpecificBagOStuff {
public function __construct( array $params = [] ) {
parent::__construct( $params );
$this->attrMap[self::ATTR_DURABILITY] = self::QOS_DURABILITY_NONE;
}
protected function doGet( $key, $flags = 0, &$casToken = null ) {
$casToken = null;
return false;
}
protected function doSet( $key, $value, $exptime = 0, $flags = 0 ) {
return true;
}
protected function doDelete( $key, $flags = 0 ) {
return true;
}
protected function doAdd( $key, $value, $exptime = 0, $flags = 0 ) {
return true;
}
protected function doIncrWithInit( $key, $exptime, $step, $init, $flags ) {
// faster
return $init;
}
public function merge( $key, callable $callback, $exptime = 0, $attempts = 10, $flags = 0 ) {
// faster
return true;
}
}
/** @deprecated class alias since 1.43 */
class_alias( EmptyBagOStuff::class, 'EmptyBagOStuff' );
|
