includes/specials/SpecialMostcategories.php

   1 <?php
   2 /**
   3  * Implements Special:Mostcategories
   4  *
   5  * Copyright © 2005 Ævar Arnfjörð Bjarmason
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @file
  23  * @ingroup SpecialPage
  24  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  25  */
  26
  27 use MediaWiki\MediaWikiServices;
  28 use Wikimedia\Rdbms\IResultWrapper;
  29 use Wikimedia\Rdbms\IDatabase;
  30
  31 /**
  32  * A special page that list pages that have highest category count
  33  *
  34  * @ingroup SpecialPage
  35  */
  36 class MostcategoriesPage extends QueryPage {
  37         function __construct( $name = 'Mostcategories' ) {
  38                 parent::__construct( $name );
  39         }
  40
  41         public function isExpensive() {
  42                 return true;
  43         }
  44
  45         function isSyndicated() {
  46                 return false;
  47         }
  48
  49         public function getQueryInfo() {
  50                 return [
  51                         'tables' => [ 'categorylinks', 'page' ],
  52                         'fields' => [
  53                                 'namespace' => 'page_namespace',
  54                                 'title' => 'page_title',
  55                                 'value' => 'COUNT(*)'
  56                         ],
  57                         'conds' => [ 'page_namespace' =>
  58                                 MediaWikiServices::getInstance()->getNamespaceInfo()->getContentNamespaces() ],
  59                         'options' => [
  60                                 'HAVING' => 'COUNT(*) > 1',
  61                                 'GROUP BY' => [ 'page_namespace', 'page_title' ]
  62                         ],
  63                         'join_conds' => [
  64                                 'page' => [
  65                                         'LEFT JOIN',
  66                                         'page_id = cl_from'
  67                                 ]
  68                         ]
  69                 ];
  70         }
  71
  72         /**
  73          * @param IDatabase $db
  74          * @param IResultWrapper $res
  75          */
  76         function preprocessResults( $db, $res ) {
  77                 $this->executeLBFromResultWrapper( $res );
  78         }
  79
  80         /**
  81          * @param Skin $skin
  82          * @param object $result Result row
  83          * @return string
  84          */
  85         function formatResult( $skin, $result ) {
  86                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
  87                 if ( !$title ) {
  88                         return Html::element(
  89                                 'span',
  90                                 [ 'class' => 'mw-invalidtitle' ],
  91                                 Linker::getInvalidTitleDescription(
  92                                         $this->getContext(),
  93                                         $result->namespace,
  94                                         $result->title
  95                                 )
  96                         );
  97                 }
  98
  99                 $linkRenderer = $this->getLinkRenderer();
 100                 if ( $this->isCached() ) {
 101                         $link = $linkRenderer->makeLink( $title );
 102                 } else {
 103                         $link = $linkRenderer->makeKnownLink( $title );
 104                 }
 105
 106                 $count = $this->msg( 'ncategories' )->numParams( $result->value )->escaped();
 107
 108                 return $this->getLanguage()->specialList( $link, $count );
 109         }
 110
 111         protected function getGroupName() {
 112                 return 'highuse';
 113         }
 114 }