SpecialMostinterwikis.php

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<?php
class MostinterwikisPage extends QueryPage {

        function __construct( $name = 'Mostinterwikis' ) {
                parent::__construct( $name );
        }

        function isExpensive() { return true; }
        function isSyndicated() { return false; }

        function getQueryInfo() {
                return array (
                        'tables' => array (
                                'langlinks',
                                'page'
                        ), 'fields' => array (
                                'namespace' => 'page_namespace',
                                'title' => 'page_title',
                                'value' => 'COUNT(*)'
                        ), 'conds' => array (
                                'page_namespace' => MWNamespace::getContentNamespaces()
                        ), 'options' => array (
                                'HAVING' => 'COUNT(*) > 1',
                                'GROUP BY' => array (
                                        'page_namespace',
                                        'page_title'
                                )
                        ), 'join_conds' => array (
                                'page' => array (
                                        'LEFT JOIN',
                                        'page_id = ll_from'
                                )
                        )
                );
        }

        function preprocessResults( $db, $res ) {
                # There's no point doing a batch check if we aren't caching results;
                # the page must exist for it to have been pulled out of the table
                if ( !$this->isCached() || !$res->numRows() ) {
                        return;
                }

                $batch = new LinkBatch;
                foreach ( $res as $row ) {
                        $batch->add( $row->namespace, $row->title );
                }
                $batch->execute();

                // Back to start for display
                $res->seek( 0 );
        }

        function formatResult( $skin, $result ) {
                $title = Title::makeTitleSafe( $result->namespace, $result->title );
                if ( !$title ) {
                        return Html::element( 'span', array( 'class' => 'mw-invalidtitle' ),
                                Linker::getInvalidTitleDescription( $this->getContext(), $result->namespace, $result->title ) );
                }

                if ( $this->isCached() ) {
                        $link = Linker::link( $title );
                } else {
                        $link = Linker::linkKnown( $title );
                }

                $count = $this->msg( 'ninterwikis' )->numParams( $result->value )->escaped();

                return $this->getLanguage()->specialList( $link, $count );
        }
}