112 lines
2.9 KiB
PHP
112 lines
2.9 KiB
PHP
<?php
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/**
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* @file
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* @ingroup SpecialPage
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*/
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/**
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* A special page to show pages ordered by the number of pages linking to them.
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* Implements Special:Mostlinked
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*
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* @ingroup SpecialPage
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*
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* @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
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* @author Rob Church <robchur@gmail.com>
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* @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
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* @copyright © 2006 Rob Church
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* @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
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*/
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class MostlinkedPage extends QueryPage {
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function getName() { return 'Mostlinked'; }
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function isExpensive() { return true; }
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function isSyndicated() { return false; }
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function getSQL() {
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global $wgMiserMode;
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$dbr = wfGetDB( DB_SLAVE );
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# In miser mode, reduce the query cost by adding a threshold for large wikis
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if ( $wgMiserMode ) {
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$numPages = SiteStats::pages();
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if ( $numPages > 10000 ) {
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$cutoff = 100;
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} elseif ( $numPages > 100 ) {
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$cutoff = intval( sqrt( $numPages ) );
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} else {
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$cutoff = 1;
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}
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} else {
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$cutoff = 1;
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}
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list( $pagelinks, $page ) = $dbr->tableNamesN( 'pagelinks', 'page' );
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return
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"SELECT 'Mostlinked' AS type,
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pl_namespace AS namespace,
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pl_title AS title,
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COUNT(*) AS value
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FROM $pagelinks
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LEFT JOIN $page ON pl_namespace=page_namespace AND pl_title=page_title
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GROUP BY pl_namespace, pl_title
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HAVING COUNT(*) > $cutoff";
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}
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/**
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* Pre-fill the link cache
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*/
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function preprocessResults( $db, $res ) {
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if( $db->numRows( $res ) > 0 ) {
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$linkBatch = new LinkBatch();
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while( $row = $db->fetchObject( $res ) )
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$linkBatch->add( $row->namespace, $row->title );
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$db->dataSeek( $res, 0 );
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$linkBatch->execute();
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}
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}
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/**
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* Make a link to "what links here" for the specified title
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*
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* @param $title Title being queried
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* @param $caption String: text to display on the link
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* @param $skin Skin to use
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* @return String
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*/
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function makeWlhLink( &$title, $caption, &$skin ) {
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$wlh = SpecialPage::getTitleFor( 'Whatlinkshere', $title->getPrefixedDBkey() );
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return $skin->linkKnown( $wlh, $caption );
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}
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/**
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* Make links to the page corresponding to the item, and the "what links here" page for it
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*
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* @param $skin Skin to be used
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* @param $result Result row
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* @return string
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*/
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function formatResult( $skin, $result ) {
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global $wgLang;
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$title = Title::makeTitleSafe( $result->namespace, $result->title );
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if ( !$title ) {
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return '<!-- ' . htmlspecialchars( "Invalid title: [[$title]]" ) . ' -->';
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}
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$link = $skin->link( $title );
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$wlh = $this->makeWlhLink( $title,
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wfMsgExt( 'nlinks', array( 'parsemag', 'escape'),
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$wgLang->formatNum( $result->value ) ), $skin );
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return wfSpecialList( $link, $wlh );
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}
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}
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/**
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* constructor
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*/
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function wfSpecialMostlinked() {
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list( $limit, $offset ) = wfCheckLimits();
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$wpp = new MostlinkedPage();
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$wpp->doQuery( $offset, $limit );
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}
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