WantedQueryPage.php

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<?php
abstract class WantedQueryPage extends QueryPage {
    function isExpensive() {
        return true;
    }

    function isSyndicated() {
        return false;
    }

    function preprocessResults( $db, $res ) {
        if ( !$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 forceExistenceCheck() {
        return false;
    }

    public function formatResult( $skin, $result ) {
        $title = Title::makeTitleSafe( $result->namespace, $result->title );
        if ( $title instanceof Title ) {
            if ( $this->isCached() || $this->forceExistenceCheck() ) {
                $pageLink = $this->existenceCheck( $title )
                    ? '<del>' . Linker::link( $title ) . '</del>'
                    : Linker::link( $title );
            } else {
                $pageLink = Linker::link(
                    $title,
                    null,
                    array(),
                    array(),
                    array( 'broken' )
                );
            }
            return $this->getLanguage()->specialList( $pageLink, $this->makeWlhLink( $title, $result ) );
        } else {
            return $this->msg( 'wantedpages-badtitle', $result->title )->escaped();
        }
    }

    protected function existenceCheck( Title $title ) {
        return $title->isKnown();
    }

    private function makeWlhLink( $title, $result ) {
        $wlh = SpecialPage::getTitleFor( 'Whatlinkshere', $title->getPrefixedText() );
        $label = $this->msg( 'nlinks' )->numParams( $result->value )->escaped();
        return Linker::link( $wlh, $label );
    }
}