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<?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 MediaWiki\Specials;
use MediaWiki\Cache\LinkBatchFactory;
use MediaWiki\Languages\LanguageConverterFactory;
use MediaWiki\Linker\LinksMigration;
use MediaWiki\SpecialPage\PageQueryPage;
use MediaWiki\Title\NamespaceInfo;
use Wikimedia\Rdbms\IConnectionProvider;
/**
* List of articles with no article linking to them,
* thus being lonely.
*
* @ingroup SpecialPage
*/
class SpecialLonelyPages extends PageQueryPage {
private NamespaceInfo $namespaceInfo;
private LinksMigration $linksMigration;
/**
* @param NamespaceInfo $namespaceInfo
* @param IConnectionProvider $dbProvider
* @param LinkBatchFactory $linkBatchFactory
* @param LanguageConverterFactory $languageConverterFactory
* @param LinksMigration $linksMigration
*/
public function __construct(
NamespaceInfo $namespaceInfo,
IConnectionProvider $dbProvider,
LinkBatchFactory $linkBatchFactory,
LanguageConverterFactory $languageConverterFactory,
LinksMigration $linksMigration
) {
parent::__construct( 'Lonelypages' );
$this->namespaceInfo = $namespaceInfo;
$this->setDatabaseProvider( $dbProvider );
$this->setLinkBatchFactory( $linkBatchFactory );
$this->setLanguageConverter( $languageConverterFactory->getLanguageConverter( $this->getContentLanguage() ) );
$this->linksMigration = $linksMigration;
}
protected function getPageHeader() {
return $this->msg( 'lonelypagestext' )->parseAsBlock();
}
protected function sortDescending() {
return false;
}
public function isExpensive() {
return true;
}
public function isSyndicated() {
return false;
}
public function getQueryInfo() {
$queryInfo = $this->linksMigration->getQueryInfo( 'pagelinks', 'pagelinks', 'LEFT JOIN' );
$tables = [ 'page', 'linktarget', 'templatelinks', 'pagelinks' ];
$conds = [
'pl_from' => null,
'page_namespace' => $this->namespaceInfo->getContentNamespaces(),
'page_is_redirect' => 0,
'tl_from' => null,
];
$joinConds = [
'templatelinks' => [ 'LEFT JOIN', [ 'tl_target_id=lt_id' ] ],
'linktarget' => [
'LEFT JOIN', [
"lt_namespace = page_namespace",
"lt_title = page_title"
]
]
];
if ( !in_array( 'linktarget', $queryInfo['tables'] ) ) {
$joinConds['pagelinks'] = [
'LEFT JOIN', [
"pl_namespace = page_namespace",
"pl_title = page_title"
]
];
}
// Allow extensions to modify the query
$this->getHookRunner()->onLonelyPagesQuery( $tables, $conds, $joinConds );
return [
'tables' => $tables,
'fields' => [
'namespace' => 'page_namespace',
'title' => 'page_title',
],
'conds' => $conds,
'join_conds' => array_merge( $joinConds, $queryInfo['joins'] )
];
}
protected function getOrderFields() {
// For some crazy reason ordering by a constant
// causes a filesort in MySQL 5
if ( count( $this->namespaceInfo->getContentNamespaces() ) > 1 ) {
return [ 'page_namespace', 'page_title' ];
} else {
return [ 'page_title' ];
}
}
protected function getGroupName() {
return 'maintenance';
}
}
/** @deprecated class alias since 1.41 */
class_alias( SpecialLonelyPages::class, 'SpecialLonelyPages' );
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