includes/specials/SpecialMostlinkedcategories.php

   1 <?php
   2 /**
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  */
  19
  20 /**
  21  * @file
  22  * @ingroup SpecialPage
  23  */
  24
  25 /**
  26  * A querypage to show categories ordered in descending order by the pages  in them
  27  *
  28  * @ingroup SpecialPage
  29  *
  30  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  31  * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
  32  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  33  */
  34 class MostlinkedCategoriesPage extends QueryPage {
  35
  36         function getName() { return 'Mostlinkedcategories'; }
  37         function isExpensive() { return true; }
  38         function isSyndicated() { return false; }
  39
  40         function getSQL() {
  41                 $dbr = wfGetDB( DB_SLAVE );
  42                 $categorylinks = $dbr->tableName( 'categorylinks' );
  43                 $name = $dbr->addQuotes( $this->getName() );
  44                 return
  45                         "
  46                         SELECT
  47                                 $name as type,
  48                                 " . NS_CATEGORY . " as namespace,
  49                                 cl_to as title,
  50                                 COUNT(*) as value
  51                         FROM $categorylinks
  52                         GROUP BY cl_to
  53                         ";
  54         }
  55
  56         function sortDescending() { return true; }
  57
  58         /**
  59          * Fetch user page links and cache their existence
  60          */
  61         function preprocessResults( $db, $res ) {
  62                 $batch = new LinkBatch;
  63                 while ( $row = $db->fetchObject( $res ) )
  64                         $batch->add( $row->namespace, $row->title );
  65                 $batch->execute();
  66
  67                 // Back to start for display
  68                 if ( $db->numRows( $res ) > 0 )
  69                         // If there are no rows we get an error seeking.
  70                         $db->dataSeek( $res, 0 );
  71         }
  72
  73         function formatResult( $skin, $result ) {
  74                 global $wgLang, $wgContLang;
  75
  76                 $nt = Title::makeTitle( $result->namespace, $result->title );
  77                 $text = $wgContLang->convert( $nt->getText() );
  78
  79                 $plink = $skin->link( $nt, htmlspecialchars( $text ) );
  80
  81                 $nlinks = wfMsgExt( 'nmembers', array( 'parsemag', 'escape'),
  82                         $wgLang->formatNum( $result->value ) );
  83                 return wfSpecialList($plink, $nlinks);
  84         }
  85 }
  86
  87 /**
  88  * constructor
  89  */
  90 function wfSpecialMostlinkedCategories() {
  91         list( $limit, $offset ) = wfCheckLimits();
  92
  93         $wpp = new MostlinkedCategoriesPage();
  94
  95         $wpp->doQuery( $offset, $limit );
  96 }