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<?php
/**
* Remember the page that was previously loaded.
*
* 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
* @ingroup Cache
*/
namespace MediaWiki\Cache;
use MediaWiki\Config\ServiceOptions;
use MediaWiki\HookContainer\HookContainer;
use MediaWiki\Linker\LinksMigration;
use MediaWiki\Page\PageReference;
use Psr\Log\LoggerInterface;
use Wikimedia\ObjectCache\WANObjectCache;
use Wikimedia\Rdbms\IConnectionProvider;
/**
* @since 1.37
*/
class BacklinkCacheFactory {
/** @var BacklinkCache */
private $latestBacklinkCache;
/** @var WANObjectCache */
private $wanCache;
/** @var HookContainer */
private $hookContainer;
private IConnectionProvider $dbProvider;
private ServiceOptions $options;
private LinksMigration $linksMigration;
private LoggerInterface $logger;
public function __construct(
ServiceOptions $options,
LinksMigration $linksMigration,
WANObjectCache $wanCache,
HookContainer $hookContainer,
IConnectionProvider $dbProvider,
LoggerInterface $logger
) {
$this->options = $options;
$this->linksMigration = $linksMigration;
$this->wanCache = $wanCache;
$this->hookContainer = $hookContainer;
$this->dbProvider = $dbProvider;
$this->logger = $logger;
}
/**
* Returns a BacklinkCache for $page. May re-use previously
* created instances.
*
* Currently, only one cache instance can exist; callers that
* need multiple backlink cache objects should keep them in scope.
*
* @param PageReference $page Page to get a backlink cache for
* @return BacklinkCache
*/
public function getBacklinkCache( PageReference $page ): BacklinkCache {
if ( !$this->latestBacklinkCache || !$this->latestBacklinkCache->getPage()->isSamePageAs( $page ) ) {
$this->latestBacklinkCache = new BacklinkCache(
$this->options,
$this->linksMigration,
$this->wanCache,
$this->hookContainer,
$this->dbProvider,
$this->logger,
$page
);
}
return $this->latestBacklinkCache;
}
}
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