MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / includes / specials / SpecialListredirects.php

diff --git a/includes/specials/SpecialListredirects.php b/includes/specials/SpecialListredirects.php
index 315047daba2a334c67a2e34facf8c45658df1f91..f81c03c77ae0b9d2a614781fff001f27b8e775a8 100644 (file)
--- a/includes/specials/SpecialListredirects.php
+++ b/includes/specials/SpecialListredirects.php
@@ -24,57 +24,128 @@
  * @author Rob Church <robchur@gmail.com>
  */
 
+use Wikimedia\Rdbms\ResultWrapper;
+use Wikimedia\Rdbms\IDatabase;
+
 /**
  * Special:Listredirects - Lists all the redirects on the wiki.
  * @ingroup SpecialPage
  */
 class ListredirectsPage extends QueryPage {
+       function __construct( $name = 'Listredirects' ) {
+               parent::__construct( $name );
+       }
 
-       function getName() { return( 'Listredirects' ); }
-       function isExpensive() { return( true ); }
-       function isSyndicated() { return( false ); }
-       function sortDescending() { return( false ); }
-
-       function getSQL() {
-               $dbr = wfGetDB( DB_SLAVE );
-               $page = $dbr->tableName( 'page' );
-               $sql = "SELECT 'Listredirects' AS type, page_title AS title, page_namespace AS namespace, 
-                       0 AS value FROM $page WHERE page_is_redirect = 1";
-               return( $sql );
+       public function isExpensive() {
+               return true;
        }
 
-       function formatResult( $skin, $result ) {
-               global $wgContLang;
+       function isSyndicated() {
+               return false;
+       }
+
+       function sortDescending() {
+               return false;
+       }
+
+       public function getQueryInfo() {
+               return [
+                       'tables' => [ 'p1' => 'page', 'redirect', 'p2' => 'page' ],
+                       'fields' => [ 'namespace' => 'p1.page_namespace',
+                               'title' => 'p1.page_title',
+                               'value' => 'p1.page_title',
+                               'rd_namespace',
+                               'rd_title',
+                               'rd_fragment',
+                               'rd_interwiki',
+                               'redirid' => 'p2.page_id' ],
+                       'conds' => [ 'p1.page_is_redirect' => 1 ],
+                       'join_conds' => [ 'redirect' => [
+                               'LEFT JOIN', 'rd_from=p1.page_id' ],
+                               'p2' => [ 'LEFT JOIN', [
+                                       'p2.page_namespace=rd_namespace',
+                                       'p2.page_title=rd_title' ] ] ]
+               ];
+       }
+
+       function getOrderFields() {
+               return [ 'p1.page_namespace', 'p1.page_title' ];
+       }
 
+       /**
+        * Cache page existence for performance
+        *
+        * @param IDatabase $db
+        * @param ResultWrapper $res
+        */
+       function preprocessResults( $db, $res ) {
+               if ( !$res->numRows() ) {
+                       return;
+               }
+
+               $batch = new LinkBatch;
+               foreach ( $res as $row ) {
+                       $batch->add( $row->namespace, $row->title );
+                       $redirTarget = $this->getRedirectTarget( $row );
+                       if ( $redirTarget ) {
+                               $batch->addObj( $redirTarget );
+                       }
+               }
+               $batch->execute();
+
+               // Back to start for display
+               $res->seek( 0 );
+       }
+
+       /**
+        * @param stdClass $row
+        * @return Title|null
+        */
+       protected function getRedirectTarget( $row ) {
+               if ( isset( $row->rd_title ) ) {
+                       return Title::makeTitle( $row->rd_namespace,
+                               $row->rd_title, $row->rd_fragment,
+                               $row->rd_interwiki
+                       );
+               } else {
+                       $title = Title::makeTitle( $row->namespace, $row->title );
+                       $article = WikiPage::factory( $title );
+
+                       return $article->getRedirectTarget();
+               }
+       }
+
+       /**
+        * @param Skin $skin
+        * @param object $result Result row
+        * @return string
+        */
+       function formatResult( $skin, $result ) {
+               $linkRenderer = $this->getLinkRenderer();
                # Make a link to the redirect itself
                $rd_title = Title::makeTitle( $result->namespace, $result->title );
-               $rd_link = $skin->link(
+               $rd_link = $linkRenderer->makeLink(
                        $rd_title,
                        null,
-                       array(),
-                       array( 'redirect' => 'no' )
+                       [],
+                       [ 'redirect' => 'no' ]
                );
 
                # Find out where the redirect leads
-               $revision = Revision::newFromTitle( $rd_title );
-               if( $revision ) {
+               $target = $this->getRedirectTarget( $result );
+               if ( $target ) {
                        # Make a link to the destination page
-                       $target = Title::newFromRedirect( $revision->getText() );
-                       if( $target ) {
-                               $arr = $wgContLang->getArrow() . $wgContLang->getDirMark();
-                               $targetLink = $skin->link( $target );
-                               return "$rd_link $arr $targetLink";
-                       } else {
-                               return "<del>$rd_link</del>";
-                       }
+                       $lang = $this->getLanguage();
+                       $arr = $lang->getArrow() . $lang->getDirMark();
+                       $targetLink = $linkRenderer->makeLink( $target, $target->getFullText() );
+
+                       return "$rd_link $arr $targetLink";
                } else {
                        return "<del>$rd_link</del>";
                }
        }
-}
 
-function wfSpecialListredirects() {
-       list( $limit, $offset ) = wfCheckLimits();
-       $lrp = new ListredirectsPage();
-       $lrp->doQuery( $offset, $limit );
+       protected function getGroupName() {
+               return 'pages';
+       }
 }