e865062d02
This allows for class-agnostic detection with BagOStuff as well as WANObjectCache instances. Change-Id: Ib48cbf3d93a49587f87fa05e86b65f727e63bc34
69 lines
1.9 KiB
PHP
69 lines
1.9 KiB
PHP
<?php
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/**
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* Dummy object caching.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Cache
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*/
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/**
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* A BagOStuff object with no objects in it. Used to provide a no-op object to calling code.
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*
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* @ingroup Cache
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*/
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class EmptyBagOStuff extends MediumSpecificBagOStuff {
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public function __construct( array $params = [] ) {
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parent::__construct( $params );
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$this->attrMap[self::ATTR_DURABILITY] = self::QOS_DURABILITY_NONE;
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}
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protected function doGet( $key, $flags = 0, &$casToken = null ) {
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$casToken = null;
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return false;
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}
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protected function doSet( $key, $value, $exptime = 0, $flags = 0 ) {
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return true;
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}
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protected function doDelete( $key, $flags = 0 ) {
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return true;
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}
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protected function doAdd( $key, $value, $exptime = 0, $flags = 0 ) {
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return true;
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}
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public function incr( $key, $value = 1, $flags = 0 ) {
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return false;
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}
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public function decr( $key, $value = 1, $flags = 0 ) {
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return false;
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}
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public function incrWithInit( $key, $exptime, $value = 1, $init = null, $flags = 0 ) {
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return false; // faster
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}
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public function merge( $key, callable $callback, $exptime = 0, $attempts = 10, $flags = 0 ) {
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return true; // faster
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}
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}
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