includes/specials/SpecialMostlinked.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  * A special page to show pages ordered by the number of pages linking to them.
   9  * Implements Special:Mostlinked
  10  *
  11  * @ingroup SpecialPage
  12  *
  13  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  14  * @author Rob Church <robchur@gmail.com>
  15  * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
  16  * @copyright © 2006 Rob Church
  17  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  18  */
  19 class MostlinkedPage extends QueryPage {
  20
  21         function getName() { return 'Mostlinked'; }
  22         function isExpensive() { return true; }
  23         function isSyndicated() { return false; }
  24
  25         function getSQL() {
  26                 $dbr = wfGetDB( DB_SLAVE );
  27                 list( $pagelinks, $page ) = $dbr->tableNamesN( 'pagelinks', 'page' );
  28                 return
  29                         "SELECT 'Mostlinked' AS type,
  30                                 pl_namespace AS namespace,
  31                                 pl_title AS title,
  32                                 COUNT(*) AS value
  33                         FROM $pagelinks
  34                         LEFT JOIN $page ON pl_namespace=page_namespace AND pl_title=page_title
  35                         GROUP BY pl_namespace, pl_title
  36                         HAVING COUNT(*) > 1";
  37         }
  38
  39         /**
  40          * Pre-fill the link cache
  41          */
  42         function preprocessResults( $db, $res ) {
  43                 if( $db->numRows( $res ) > 0 ) {
  44                         $linkBatch = new LinkBatch();
  45                         while( $row = $db->fetchObject( $res ) )
  46                                 $linkBatch->add( $row->namespace, $row->title );
  47                         $db->dataSeek( $res, 0 );
  48                         $linkBatch->execute();
  49                 }
  50         }
  51
  52         /**
  53          * Make a link to "what links here" for the specified title
  54          *
  55          * @param $title Title being queried
  56          * @param $skin Skin to use
  57          * @return string
  58          */
  59         function makeWlhLink( &$title, $caption, &$skin ) {
  60                 $wlh = SpecialPage::getTitleFor( 'Whatlinkshere', $title->getPrefixedDBkey() );
  61                 return $skin->linkKnown( $wlh, $caption );
  62         }
  63
  64         /**
  65          * Make links to the page corresponding to the item, and the "what links here" page for it
  66          *
  67          * @param $skin Skin to be used
  68          * @param $result Result row
  69          * @return string
  70          */
  71         function formatResult( $skin, $result ) {
  72                 global $wgLang;
  73                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
  74                 if ( !$title ) {
  75                         return '<!-- ' . htmlspecialchars( "Invalid title: [[$title]]" ) . ' -->';
  76                 }
  77                 $link = $skin->link( $title );
  78                 $wlh = $this->makeWlhLink( $title,
  79                         wfMsgExt( 'nlinks', array( 'parsemag', 'escape'),
  80                                 $wgLang->formatNum( $result->value ) ), $skin );
  81                 return wfSpecialList( $link, $wlh );
  82         }
  83 }
  84
  85 /**
  86  * constructor
  87  */
  88 function wfSpecialMostlinked() {
  89         list( $limit, $offset ) = wfCheckLimits();
  90
  91         $wpp = new MostlinkedPage();
  92
  93         $wpp->doQuery( $offset, $limit );
  94 }