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SpecialDeadendPages.php
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SpecialDeadendPages.php
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<?php
/**
* @license GPL-2.0-or-later
* @file
*/
namespace MediaWiki\Specials;
use MediaWiki\Cache\LinkBatchFactory;
use MediaWiki\Deferred\LinksUpdate\PageLinksTable;
use MediaWiki\Languages\LanguageConverterFactory;
use MediaWiki\SpecialPage\PageQueryPage;
use MediaWiki\Title\NamespaceInfo;
use Wikimedia\Rdbms\IConnectionProvider;
/**
* List of pages that contain no links to other pages.
*
* @ingroup SpecialPage
*/
class SpecialDeadendPages extends PageQueryPage {
private NamespaceInfo $namespaceInfo;
public function __construct(
NamespaceInfo $namespaceInfo,
IConnectionProvider $dbProvider,
LinkBatchFactory $linkBatchFactory,
LanguageConverterFactory $languageConverterFactory
) {
parent::__construct( 'Deadendpages' );
$this->namespaceInfo = $namespaceInfo;
$this->setDatabaseProvider( $dbProvider );
$this->setLinkBatchFactory( $linkBatchFactory );
$this->setLanguageConverter( $languageConverterFactory->getLanguageConverter( $this->getContentLanguage() ) );
}
/** @inheritDoc */
protected function getPageHeader() {
return $this->msg( 'deadendpagestext' )->parseAsBlock();
}
/**
* LEFT JOIN is expensive
*
* @return bool
*/
public function isExpensive() {
return true;
}
/** @inheritDoc */
public function isSyndicated() {
return false;
}
/**
* @return bool
*/
protected function sortDescending() {
return false;
}
/** @inheritDoc */
public function getQueryInfo() {
return [
'tables' => [ 'page', 'pagelinks' ],
'fields' => [
'namespace' => 'page_namespace',
'title' => 'page_title',
],
'conds' => [
'pl_from' => null,
'page_namespace' => $this->namespaceInfo->getContentNamespaces(),
'page_is_redirect' => 0
],
'join_conds' => [
'pagelinks' => [
'LEFT JOIN',
[ 'page_id=pl_from' ]
]
]
];
}
/** @inheritDoc */
protected function getRecacheDB() {
return $this->getDatabaseProvider()->getReplicaDatabase(
PageLinksTable::VIRTUAL_DOMAIN,
'vslow'
);
}
/** @inheritDoc */
protected function getOrderFields() {
// For some crazy reason ordering by a constant
// causes a filesort
if ( count( $this->namespaceInfo->getContentNamespaces() ) > 1 ) {
return [ 'page_namespace', 'page_title' ];
} else {
return [ 'page_title' ];
}
}
/** @inheritDoc */
protected function getGroupName() {
return 'maintenance';
}
}
/** @deprecated class alias since 1.41 */
class_alias( SpecialDeadendPages::class, 'SpecialDeadendPages' );

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Expires
Aug 20 2026, 15:57 (11 w, 5 d ago)
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SpecialDeadendPages.php (2 KB)

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