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 Wikimedia\Rdbms\ResultWrapper;
  28 use Wikimedia\Rdbms\IDatabase;
  29
  30 /**
  31  * A special page that list pages that have highest category count
  32  *
  33  * @ingroup SpecialPage
  34  */
  35 class MostcategoriesPage extends QueryPage {
  36         function __construct( $name = 'Mostcategories' ) {
  37                 parent::__construct( $name );
  38         }
  39
  40         public function isExpensive() {
  41                 return true;
  42         }
  43
  44         function isSyndicated() {
  45                 return false;
  46         }
  47
  48         public function getQueryInfo() {
  49                 return [
  50                         'tables' => [ 'categorylinks', 'page' ],
  51                         'fields' => [
  52                                 'namespace' => 'page_namespace',
  53                                 'title' => 'page_title',
  54                                 'value' => 'COUNT(*)'
  55                         ],
  56                         'conds' => [ 'page_namespace' => MWNamespace::getContentNamespaces() ],
  57                         'options' => [
  58                                 'HAVING' => 'COUNT(*) > 1',
  59                                 'GROUP BY' => [ 'page_namespace', 'page_title' ]
  60                         ],
  61                         'join_conds' => [
  62                                 'page' => [
  63                                         'LEFT JOIN',
  64                                         'page_id = cl_from'
  65                                 ]
  66                         ]
  67                 ];
  68         }
  69
  70         /**
  71          * @param IDatabase $db
  72          * @param ResultWrapper $res
  73          */
  74         function preprocessResults( $db, $res ) {
  75                 $this->executeLBFromResultWrapper( $res );
  76         }
  77
  78         /**
  79          * @param Skin $skin
  80          * @param object $result Result row
  81          * @return string
  82          */
  83         function formatResult( $skin, $result ) {
  84                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
  85                 if ( !$title ) {
  86                         return Html::element(
  87                                 'span',
  88                                 [ 'class' => 'mw-invalidtitle' ],
  89                                 Linker::getInvalidTitleDescription(
  90                                         $this->getContext(),
  91                                         $result->namespace,
  92                                         $result->title
  93                                 )
  94                         );
  95                 }
  96
  97                 $linkRenderer = $this->getLinkRenderer();
  98                 if ( $this->isCached() ) {
  99                         $link = $linkRenderer->makeLink( $title );
 100                 } else {
 101                         $link = $linkRenderer->makeKnownLink( $title );
 102                 }
 103
 104                 $count = $this->msg( 'ncategories' )->numParams( $result->value )->escaped();
 105
 106                 return $this->getLanguage()->specialList( $link, $count );
 107         }
 108
 109         protected function getGroupName() {
 110                 return 'highuse';
 111         }
 112 }