includes/SpecialMostlinked.php

   1 <?php
   2
   3 /**
   4  * A special page to show pages ordered by the number of pages linking to them
   5  *
   6  * @package MediaWiki
   7  * @subpackage SpecialPage
   8  *
   9  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  10  * @author Rob Church <robchur@gmail.com>
  11  * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
  12  * @copyright © 2006 Rob Church
  13  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  14  */
  15
  16 /**
  17  * @package MediaWiki
  18  * @subpackage SpecialPage
  19  */
  20 class MostlinkedPage extends QueryPage {
  21
  22         function getName() { return 'Mostlinked'; }
  23         function isExpensive() { return true; }
  24         function isSyndicated() { return false; }
  25
  26         /**
  27          * Note: Getting page_namespace only works if $this->isCached() is false
  28          */
  29         function getSQL() {
  30                 $dbr =& wfGetDB( DB_SLAVE );
  31                 extract( $dbr->tableNames( 'pagelinks', 'page' ) );
  32                 return
  33                         "SELECT 'Mostlinked' AS type,
  34                                 pl_namespace AS namespace,
  35                                 pl_title AS title,
  36                                 COUNT(*) AS value,
  37                                 page_namespace
  38                         FROM $pagelinks
  39                         LEFT JOIN $page ON pl_namespace=page_namespace AND pl_title=page_title
  40                         GROUP BY 1,2,3,5
  41                         HAVING COUNT(*) > 1";
  42         }
  43
  44         /**
  45          * Pre-fill the link cache
  46          */
  47         function preprocessResults( &$dbr, $res ) {
  48                 if( $dbr->numRows( $res ) > 0 ) {
  49                         $linkBatch = new LinkBatch();
  50                         while( $row = $dbr->fetchObject( $res ) )
  51                                 $linkBatch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  52                         $dbr->dataSeek( $res, 0 );
  53                         $linkBatch->execute();
  54                 }
  55         }
  56
  57         /**
  58          * Make a link to "what links here" for the specified title
  59          *
  60          * @param $title Title being queried
  61          * @param $skin Skin to use
  62          * @return string
  63          */
  64         function makeWlhLink( &$title, $caption, &$skin ) {
  65                 $wlh = Title::makeTitle( NS_SPECIAL, 'Whatlinkshere' );
  66                 return $skin->makeKnownLinkObj( $wlh, $caption, 'target=' . $title->getPrefixedUrl() );
  67         }
  68
  69         /**
  70          * Make links to the page corresponding to the item, and the "what links here" page for it
  71          *
  72          * @param $skin Skin to be used
  73          * @param $result Result row
  74          * @return string
  75          */
  76         function formatResult( $skin, $result ) {
  77                 global $wgLang;
  78                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
  79                 $link = $skin->makeLinkObj( $title );
  80                 $wlh = $this->makeWlhLink( $title,
  81                         wfMsgExt( 'nlinks', array( 'parsemag', 'escape'),
  82                                 $wgLang->formatNum( $result->value ) ), $skin );
  83                 return wfSpecialList( $link, $wlh );
  84         }
  85 }
  86
  87 /**
  88  * constructor
  89  */
  90 function wfSpecialMostlinked() {
  91         list( $limit, $offset ) = wfCheckLimits();
  92
  93         $wpp = new MostlinkedPage();
  94
  95         $wpp->doQuery( $offset, $limit );
  96 }
  97
  98 ?>