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