maintenance/refreshLinks.inc

   1 <?php
   2 /**
   3  * @todo document
   4  * @package MediaWiki
   5  * @subpackage Maintenance
   6  */
   7
   8 /** */
   9 define( "REPORTING_INTERVAL", 50 );
  10 define( "PAUSE_INTERVAL", 50 );
  11
  12 function refreshLinks( $start ) {
  13         global $wgUser, $wgTitle, $wgArticle, $wgEnablePersistentLC, $wgLinkCache, $wgOut;
  14
  15         $dbw =& wfGetDB( DB_MASTER );
  16
  17         $end = $dbw->selectField( 'page', 'max(page_id)', false );
  18
  19         print("Refreshing link table. Starting from page_id $start of $end.\n");
  20
  21         # Don't generate TeX PNGs (lack of a sensible current directory causes errors anyway)
  22         $wgUser->setOption("math", 3);
  23
  24
  25         for ($id = $start; $id <= $end; $id++) {
  26                 if ( !($id % REPORTING_INTERVAL) ) {
  27                         print "$id\n";
  28                 }
  29
  30                 if ( !($id % PAUSE_INTERVAL) ) {
  31                         sleep(1);
  32                 }
  33
  34                 $wgTitle = Title::newFromID( $id );
  35                 if ( is_null( $wgTitle ) ) {
  36                         continue;
  37                 }
  38                 $dbw->query("BEGIN");
  39
  40                 $wgArticle = new Article( $wgTitle );
  41                 $text = $wgArticle->getContent( true );
  42                 $wgLinkCache = new LinkCache;
  43                 $wgLinkCache->forUpdate( true );
  44
  45                 global $wgLinkHolders;
  46                 $wgLinkHolders = array(
  47                         'namespaces' => array(),
  48                         'dbkeys' => array(),
  49                         'queries' => array(),
  50                         'texts' => array(),
  51                         'titles' => array()
  52                 );
  53
  54
  55                 # Parse the text and replace links with placeholders
  56                 $wgOut->addWikiText( $text );
  57
  58                 # Look up the links in the DB and add them to the link cache
  59                 $wgOut->transformBuffer( RLH_FOR_UPDATE );
  60                 $wgOut->clearHTML();
  61
  62                 if ( $wgEnablePersistentLC ) {
  63                         $wgLinkCache->saveToLinkscc( $id, $dbw->strencode( $wgTitle->getPrefixedDBkey() ) );
  64                 }
  65
  66                 $linksUpdate = new LinksUpdate( $id, $wgTitle->getPrefixedDBkey() );
  67                 $linksUpdate->doDumbUpdate();
  68                 $dbw->query("COMMIT");
  69         }
  70 }
  71 ?>