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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\Html\Html; use MediaWiki\Linker\Linker; use MediaWiki\MainConfigNames; use MediaWiki\SpecialPage\QueryPage; use MediaWiki\Title\NamespaceInfo; use MediaWiki\Title\Title; use Skin; use stdClass; use Wikimedia\Rdbms\IConnectionProvider; use Wikimedia\Rdbms\IDatabase; use Wikimedia\Rdbms\IResultWrapper; /** * List of the shortest pages in the database. * * @ingroup SpecialPage */ class SpecialShortPages extends QueryPage { private NamespaceInfo $namespaceInfo; /** * @param NamespaceInfo $namespaceInfo * @param IConnectionProvider $dbProvider * @param LinkBatchFactory $linkBatchFactory */ public function __construct( NamespaceInfo $namespaceInfo, IConnectionProvider $dbProvider, LinkBatchFactory $linkBatchFactory ) { parent::__construct( 'Shortpages' ); $this->namespaceInfo = $namespaceInfo; $this->setDatabaseProvider( $dbProvider ); $this->setLinkBatchFactory( $linkBatchFactory ); } public function isSyndicated() { return false; } public function getQueryInfo() { $config = $this->getConfig(); $tables = [ 'page' ]; $conds = [ 'page_namespace' => array_diff( $this->namespaceInfo->getContentNamespaces(), $config->get( MainConfigNames::ShortPagesNamespaceExclusions ) ), 'page_is_redirect' => 0 ]; $joinConds = []; $options = [ 'USE INDEX' => [ 'page' => 'page_redirect_namespace_len' ] ]; // Allow extensions to modify the query $this->getHookRunner()->onShortPagesQuery( $tables, $conds, $joinConds, $options ); return [ 'tables' => $tables, 'fields' => [ 'namespace' => 'page_namespace', 'title' => 'page_title', 'value' => 'page_len' ], 'conds' => $conds, 'join_conds' => $joinConds, 'options' => $options ]; } public function reallyDoQuery( $limit, $offset = false ) { $fname = static::class . '::reallyDoQuery'; $dbr = $this->getRecacheDB(); $query = $this->getQueryInfo(); $conds = isset( $query['conds'] ) ? (array)$query['conds'] : []; $namespaces = $conds['page_namespace']; unset( $conds['page_namespace'] ); if ( count( $namespaces ) === 1 || !$dbr->unionSupportsOrderAndLimit() ) { return parent::reallyDoQuery( $limit, $offset ); } // Optimization: Fix slow query on MySQL the case of multiple content namespaces, // by rewriting this as a UNION of separate single namespace queries (T168010). $sqb = $dbr->newSelectQueryBuilder() ->select( isset( $query['fields'] ) ? (array)$query['fields'] : [] ) ->tables( isset( $query['tables'] ) ? (array)$query['tables'] : [] ) ->where( $conds ) ->options( isset( $query['options'] ) ? (array)$query['options'] : [] ) ->joinConds( isset( $query['join_conds'] ) ? (array)$query['join_conds'] : [] ); if ( $limit !== false ) { if ( $offset !== false ) { // We need to increase the limit by the offset rather than // using the offset directly, otherwise it'll skip incorrectly // in the subqueries. $sqb->limit( intval( $limit ) + intval( $offset ) ); } else { $sqb->limit( intval( $limit ) ); } } $order = $this->getOrderFields(); if ( $this->sortDescending() ) { foreach ( $order as &$field ) { $field .= ' DESC'; } } $uqb = $dbr->newUnionQueryBuilder()->all(); foreach ( $namespaces as $namespace ) { $nsSqb = clone $sqb; $nsSqb->orderBy( $order ); $nsSqb->andWhere( [ 'page_namespace' => $namespace ] ); $uqb->add( $nsSqb ); } if ( $limit !== false ) { $uqb->limit( intval( $limit ) ); } if ( $offset !== false ) { $uqb->offset( intval( $offset ) ); } $orderBy = 'value'; if ( $this->sortDescending() ) { $orderBy .= ' DESC'; } $uqb->orderBy( $orderBy ); return $uqb->caller( $fname )->fetchResultSet(); } protected function getOrderFields() { return [ 'page_len' ]; } /** * @param IDatabase $db * @param IResultWrapper $res */ public function preprocessResults( $db, $res ) { $this->executeLBFromResultWrapper( $res ); } protected function sortDescending() { return false; } /** * @param Skin $skin * @param stdClass $result Result row * @return string */ public function formatResult( $skin, $result ) { $title = Title::makeTitleSafe( $result->namespace, $result->title ); if ( !$title ) { return Html::element( 'span', [ 'class' => 'mw-invalidtitle' ], Linker::getInvalidTitleDescription( $this->getContext(), $result->namespace, $result->title ) ); } $linkRenderer = $this->getLinkRenderer(); $hlink = $linkRenderer->makeKnownLink( $title, $this->msg( 'hist' )->text(), [], [ 'action' => 'history' ] ); $hlinkInParentheses = $this->msg( 'parentheses' )->rawParams( $hlink )->escaped(); if ( $this->isCached() ) { $plink = $linkRenderer->makeLink( $title ); $exists = $title->exists(); } else { $plink = $linkRenderer->makeKnownLink( $title ); $exists = true; } $contentLanguage = $this->getContentLanguage(); $bdiAttrs = [ 'dir' => $contentLanguage->getDir(), 'lang' => $contentLanguage->getHtmlCode(), ]; $plink = Html::rawElement( 'bdi', $bdiAttrs, $plink ); $size = $this->msg( 'nbytes' )->numParams( $result->value )->escaped(); $result = "{$hlinkInParentheses} {$plink} [{$size}]"; return $exists ? $result : Html::rawElement( 'del', [], $result ); } protected function getGroupName() { return 'maintenance'; } } /** * Retain the old class name for backwards compatibility. * @deprecated since 1.41 */ class_alias( SpecialShortPages::class, 'SpecialShortPages' );
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