includes/specials/SpecialMostlinkedcategories.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  * A querypage to show categories ordered in descending order by the pages  in them
   9  *
  10  * @ingroup SpecialPage
  11  *
  12  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  13  * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
  14  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  15  */
  16 class MostlinkedCategoriesPage extends QueryPage {
  17
  18         function getName() { return 'Mostlinkedcategories'; }
  19         function isExpensive() { return true; }
  20         function isSyndicated() { return false; }
  21
  22         function getSQL() {
  23                 $dbr = wfGetDB( DB_SLAVE );
  24                 $categorylinks = $dbr->tableName( 'categorylinks' );
  25                 $name = $dbr->addQuotes( $this->getName() );
  26                 return
  27                         "
  28                         SELECT
  29                                 $name as type,
  30                                 " . NS_CATEGORY . " as namespace,
  31                                 cl_to as title,
  32                                 COUNT(*) as value
  33                         FROM $categorylinks
  34                         GROUP BY 1,2,3
  35                         ";
  36         }
  37
  38         function sortDescending() { return true; }
  39
  40         /**
  41          * Fetch user page links and cache their existence
  42          */
  43         function preprocessResults( $db, $res ) {
  44                 $batch = new LinkBatch;
  45                 while ( $row = $db->fetchObject( $res ) )
  46                         $batch->add( $row->namespace, $row->title );
  47                 $batch->execute();
  48
  49                 // Back to start for display
  50                 if ( $db->numRows( $res ) > 0 )
  51                         // If there are no rows we get an error seeking.
  52                         $db->dataSeek( $res, 0 );
  53         }
  54
  55         function formatResult( $skin, $result ) {
  56                 global $wgLang, $wgContLang;
  57
  58                 $nt = Title::makeTitle( $result->namespace, $result->title );
  59                 $text = $wgContLang->convert( $nt->getText() );
  60
  61                 $plink = $skin->makeLinkObj( $nt, htmlspecialchars( $text ) );
  62
  63                 $nlinks = wfMsgExt( 'nmembers', array( 'parsemag', 'escape'),
  64                         $wgLang->formatNum( $result->value ) );
  65                 return wfSpecialList($plink, $nlinks);
  66         }
  67 }
  68
  69 /**
  70  * constructor
  71  */
  72 function wfSpecialMostlinkedCategories() {
  73         list( $limit, $offset ) = wfCheckLimits();
  74
  75         $wpp = new MostlinkedCategoriesPage();
  76
  77         $wpp->doQuery( $offset, $limit );
  78 }