Use LinkBatch for faster link lookup

diff --git a/includes/SpecialRecentchanges.php b/includes/SpecialRecentchanges.php
index 200d977..470489a 100644 (file)
--- a/includes/SpecialRecentchanges.php
+++ b/includes/SpecialRecentchanges.php
@@ -20,6 +20,7 @@ function wfSpecialRecentchanges( $par ) {
        global $wgRequest, $wgSitename, $wgLanguageCode, $wgContLanguageCode;
        global $wgFeedClasses, $wgUseRCPatrol;
        global $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
+       global $wgLinkCache;
        $fname = 'wfSpecialRecentchanges';
 
        # Get query parameters
@@ -118,19 +119,37 @@ function wfSpecialRecentchanges( $par ) {
          $showhide[1-$hidepatrolled], wfArrayToCGI( array( 'hidepatrolled' => 1-$hidepatrolled ), $urlparams ) );
 
        $uid = $wgUser->getID();
-       # Patch for showing "updated since last visit" marker
+
+       // Perform query
        $sql2 = "SELECT $recentchanges.*" . ($uid ? ",wl_user,wl_notificationtimestamp" : "") . " FROM $recentchanges " .
          ($uid ? "LEFT OUTER JOIN $watchlist ON wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace " : "") .
          "WHERE rc_timestamp > '{$cutoff}' {$hidem} " .
          "ORDER BY rc_timestamp DESC LIMIT {$limit}";
-
        $res = $dbr->query( $sql2, $fname );
+
+       // Fetch results, prepare a batch link existence check query
        $rows = array();
+       $batch = new LinkBatch;
        while( $row = $dbr->fetchObject( $res ) ){
                $rows[] = $row;
+               
+               // Title
+               $batch->add( $row->rc_namespace, $row->rc_title );
+
+               // User page link
+               $title = Title::makeTitleSafe( NS_USER, $row->rc_user_text );
+               $batch->addObj( $title );
+
+               // User talk
+               $title = Title::makeTitleSafe( NS_USER_TALK, $row->rc_user_text );
+               $batch->addObj( $title );
+
        }
        $dbr->freeResult( $res );
 
+       // Run existence checks
+       $batch->execute( $wgLinkCache );
+
        if(isset($from)) {
                $note = wfMsg( 'rcnotefrom', $wgLang->formatNum( $limit ),
                        $wgLang->timeanddate( $from, true ) );