+++ /dev/null
-<?php
-/**
- * See deferred.txt
- * @package MediaWiki
- */
-
-/**
- * @todo document
- * @package MediaWiki
- */
-class LinksUpdate {
-
- /**#@+
- * @access private
- */
- var $mId, $mTitle;
- /**#@-*/
-
- /**
- * Constructor
- * Initialize private variables
- * @param integer $id
- * @param string $title
- */
- function LinksUpdate( $id, $title ) {
- $this->mId = $id;
- $this->mTitle = $title;
- }
-
- /**
- * Update link tables with outgoing links from an updated article
- * Relies on the 'link cache' to be filled out.
- */
-
- function doUpdate() {
- global $wgUseDumbLinkUpdate, $wgLinkCache, $wgDBtransactions;
- global $wgUseCategoryMagic;
-
- if ( $wgUseDumbLinkUpdate ) {
- $this->doDumbUpdate();
- return;
- }
-
- $fname = 'LinksUpdate::doUpdate';
- wfProfileIn( $fname );
-
- $del = array();
- $add = array();
-
- $dbw =& wfGetDB( DB_MASTER );
- $pagelinks = $dbw->tableName( 'pagelinks' );
- $imagelinks = $dbw->tableName( 'imagelinks' );
- $categorylinks = $dbw->tableName( 'categorylinks' );
-
- #------------------------------------------------------------------------------
- # Good links
-
- if ( $wgLinkCache->incrementalSetup( LINKCACHE_PAGE, $del, $add ) ) {
- # Delete where necessary
- if ( count( $del ) ) {
- $batch = new LinkBatch( $del );
- $set = $batch->constructSet( 'pl', $dbw );
- if ( $set ) {
- $sql = "DELETE FROM $pagelinks WHERE pl_from={$this->mId} AND ($set)";
- $dbw->query( $sql, $fname );
- }
- }
- } else {
- # Delete everything
- $dbw->delete( 'pagelinks', array( 'pl_from' => $this->mId ), $fname );
-
- # Get the addition list
- $add = $wgLinkCache->getPageLinks();
- }
-
- # Do the insertion
- if( 0 != count( $add ) ) {
- $arr = array();
- foreach( $add as $lt => $target ) {
- array_push( $arr, array(
- 'pl_from' => $this->mId,
- 'pl_namespace' => $target->getNamespace(),
- 'pl_title' => $target->getDbKey() ) );
- }
-
- # The link cache was constructed without FOR UPDATE, so there may be collisions
- # Ignoring for now, I'm not sure if that causes problems or not, but I'm fairly
- # sure it's better than without IGNORE
- $dbw->insert( 'pagelinks', $arr, $fname, array( 'IGNORE' ) );
- }
-
- #------------------------------------------------------------------------------
- # Image links
- $dbw->delete('imagelinks',array('il_from'=>$this->mId),$fname);
-
- # Get addition list
- $add = $wgLinkCache->getImageLinks();
-
- # Do the insertion
- $sql = '';
- $image = NS_IMAGE;
- if ( 0 != count ( $add ) ) {
- $arr = array();
- foreach ($add as $iname => $val ) {
- $nt = Title::makeTitle( $image, $iname );
- if( !$nt ) continue;
- $nt->invalidateCache();
- array_push( $arr, array(
- 'il_from' => $this->mId,
- 'il_to' => $iname ) );
- }
- $dbw->insert('imagelinks', $arr, $fname, array('IGNORE'));
- }
-
- #------------------------------------------------------------------------------
- # Category links
- if( $wgUseCategoryMagic ) {
- global $messageMemc, $wgDBname;
-
- # Get addition list
- $add = $wgLinkCache->getCategoryLinks();
-
- # select existing catlinks for this page
- $res = $dbw->select( 'categorylinks',
- array( 'cl_to', 'cl_sortkey' ),
- array( 'cl_from' => $this->mId ),
- $fname,
- 'FOR UPDATE' );
-
- $del = array();
- if( 0 != $dbw->numRows( $res ) ) {
- while( $row = $dbw->fetchObject( $res ) ) {
- if( !isset( $add[$row->cl_to] ) || $add[$row->cl_to] != $row->cl_sortkey ) {
- // in the db, but no longer in the page
- // or sortkey has changed -> delete
- $del[] = $row->cl_to;
- } else {
- // remove already existing category memberships
- // from the add array
- unset( $add[$row->cl_to] );
- }
- }
- }
-
- // delete any removed categorylinks
- if( count( $del ) > 0) {
- // delete old ones
- $dbw->delete( 'categorylinks',
- array(
- 'cl_from' => $this->mId,
- 'cl_to' => $del ),
- $fname );
- foreach( $del as $cname ){
- $nt = Title::makeTitle( NS_CATEGORY, $cname );
- $nt->invalidateCache();
- // update the timestamp which indicates when the last article
- // was added or removed to/from this article
- $key = $wgDBname . ':Category:' . md5( $nt->getDBkey() ) . ':adddeltimestamp';
- $messageMemc->set( $key , wfTimestamp( TS_MW ), 24*3600 );
- }
- }
-
- // add any new category memberships
- if( count( $add ) > 0 ) {
- $arr = array();
- foreach( $add as $cname => $sortkey ) {
- $nt = Title::makeTitle( NS_CATEGORY, $cname );
- $nt->invalidateCache();
- // update the timestamp which indicates when the last article
- // was added or removed to/from this article
- $key = $wgDBname . ':Category:' . md5( $nt->getDBkey() ) . ':adddeltimestamp';
- $messageMemc->set( $key , wfTimestamp( TS_MW ), 24*3600 );
- array_push( $arr, array(
- 'cl_from' => $this->mId,
- 'cl_to' => $cname,
- 'cl_sortkey' => $sortkey ) );
- }
- // do the actual sql insertion
- $dbw->insert( 'categorylinks', $arr, $fname, array( 'IGNORE' ) );
- }
- }
-
- wfProfileOut( $fname );
- }
-
- /**
- * Link update which clears the previous entries and inserts new ones
- * May be slower or faster depending on level of lock contention and write speed of DB
- * Also useful where link table corruption needs to be repaired, e.g. in refreshLinks.php
- */
- function doDumbUpdate() {
- global $wgLinkCache, $wgDBtransactions, $wgUseCategoryMagic;
- $fname = 'LinksUpdate::doDumbUpdate';
- wfProfileIn( $fname );
-
-
- $dbw =& wfGetDB( DB_MASTER );
- $pagelinks = $dbw->tableName( 'pagelinks' );
- $imagelinks = $dbw->tableName( 'imagelinks' );
- $categorylinks = $dbw->tableName( 'categorylinks' );
-
- $dbw->delete('pagelinks', array('pl_from'=>$this->mId),$fname);
-
- $a = $wgLinkCache->getPageLinks();
- if ( 0 != count( $a ) ) {
- $arr = array();
- foreach( $a as $lt => $target ) {
- array_push( $arr, array(
- 'pl_from' => $this->mId,
- 'pl_namespace' => $target->getNamespace(),
- 'pl_title' => $target->getDBkey() ) );
- }
- $dbw->insert( 'pagelinks', $arr, $fname, array( 'IGNORE' ) );
- }
-
- $dbw->delete('imagelinks', array('il_from'=>$this->mId),$fname);
-
- $a = $wgLinkCache->getImageLinks();
- $sql = '';
- if ( 0 != count ( $a ) ) {
- $arr = array();
- foreach( $a as $iname => $val )
- array_push( $arr, array(
- 'il_from' => $this->mId,
- 'il_to' => $iname ) );
- $dbw->insert( 'imagelinks', $arr, $fname, array( 'IGNORE' ) );
- }
-
- if( $wgUseCategoryMagic ) {
- $dbw->delete('categorylinks', array('cl_from'=>$this->mId),$fname);
-
- # Get addition list
- $add = $wgLinkCache->getCategoryLinks();
-
- # Do the insertion
- $sql = '';
- if ( 0 != count ( $add ) ) {
- $arr = array();
- foreach( $add as $cname => $sortkey ) {
- # FIXME: Change all this to avoid unnecessary duplication
- $nt = Title::makeTitle( NS_CATEGORY, $cname );
- if( !$nt ) continue;
- $nt->invalidateCache();
- array_push( $arr, array(
- 'cl_from' => $this->mId,
- 'cl_to' => $cname,
- 'cl_sortkey' => $sortkey ) );
- }
- $dbw->insert( 'categorylinks', $arr, $fname, array( 'IGNORE' ) );
- }
- }
- wfProfileOut( $fname );
- }
-}
-?>
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff