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 require_once 'QueryPage.php';
  18
  19 /**
  20  * @package MediaWiki
  21  * @subpackage SpecialPage
  22  */
  23 class MostlinkedPage extends QueryPage {
  24
  25         function getName() { return 'Mostlinked'; }
  26         function isExpensive() { return true; }
  27         function isSyndicated() { return false; }
  28
  29         /**
  30          * Note: Getting page_namespace only works if $this->isCached() is false
  31          */
  32         function getSQL() {
  33                 $dbr =& wfGetDB( DB_SLAVE );
  34                 extract( $dbr->tableNames( 'pagelinks', 'page' ) );
  35                 return
  36                         "SELECT 'Mostlinked' AS type,
  37                                 pl_namespace AS namespace,
  38                                 pl_title AS title,
  39                                 COUNT(*) AS value,
  40                                 page_namespace
  41                         FROM $pagelinks
  42                         LEFT JOIN $page ON pl_namespace=page_namespace AND pl_title=page_title
  43                         GROUP BY pl_namespace,pl_title
  44                         HAVING COUNT(*) > 1";
  45         }
  46
  47         /**
  48          * Pre-fill the link cache
  49          */
  50         function preprocessResults( &$dbr, $res ) {
  51                 if( $dbr->numRows( $res ) > 0 ) {
  52                         $linkBatch = new LinkBatch();
  53                         while( $row = $dbr->fetchObject( $res ) )
  54                                 $linkBatch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  55                         $dbr->dataSeek( $res, 0 );
  56                         $linkBatch->execute();
  57                 }
  58         }
  59
  60         /**
  61          * Make a link to "what links here" for the specified title
  62          *
  63          * @param $title Title being queried
  64          * @param $skin Skin to use
  65          * @return string
  66          */
  67         function makeWlhLink( &$title, $caption, &$skin ) {
  68                 $wlh = Title::makeTitle( NS_SPECIAL, 'Whatlinkshere' );
  69                 return $skin->makeKnownLinkObj( $wlh, $caption, 'target=' . $title->getPrefixedUrl() );
  70         }
  71
  72         /**
  73          * Make links to the page corresponding to the item, and the "what links here" page for it
  74          *
  75          * @param $skin Skin to be used
  76          * @param $result Result row
  77          * @return string
  78          */
  79         function formatResult( $skin, $result ) {
  80                 global $wgLang;
  81                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
  82                 $link = $skin->makeLinkObj( $title );
  83                 $wlh = $this->makeWlhLink( $title,
  84                         wfMsgExt( 'nlinks', array( 'parsemag', 'escape'),
  85                                 $wgLang->formatNum( $result->value ) ), $skin );
  86                 return wfSpecialList( $link, $wlh );
  87         }
  88 }
  89
  90 /**
  91  * constructor
  92  */
  93 function wfSpecialMostlinked() {
  94         list( $limit, $offset ) = wfCheckLimits();
  95
  96         $wpp = new MostlinkedPage();
  97
  98         $wpp->doQuery( $offset, $limit );
  99 }
 100
 101 ?>