X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=includes%2FLinksUpdate.php;h=7b85040c015be41865f57e68e0fb6d6bcebdfe79;hb=7f0b8463c8e1834c2dd5bef7d0dd34d7d1064d9b;hp=c4033400d164c4a68f0ad8e25606c149047c6950;hpb=388d95d7b8a59421a680237cd3bbe3250aca6d7d;p=lhc%2Fweb%2Fwiklou.git diff --git a/includes/LinksUpdate.php b/includes/LinksUpdate.php index c4033400d1..7b85040c01 100644 --- a/includes/LinksUpdate.php +++ b/includes/LinksUpdate.php @@ -1,300 +1,799 @@ mId = $id; + function __construct( $title, $parserOutput, $recursive = true ) { + global $wgAntiLockFlags; + + if ( $wgAntiLockFlags & ALF_NO_LINK_LOCK ) { + $this->mOptions = array(); + } else { + $this->mOptions = array( 'FOR UPDATE' ); + } + $this->mDb = wfGetDB( DB_MASTER ); + + if ( !is_object( $title ) ) { + throw new MWException( "The calling convention to LinksUpdate::LinksUpdate() has changed. " . + "Please see Article::editUpdates() for an invocation example.\n" ); + } $this->mTitle = $title; + $this->mId = $title->getArticleID(); + + $this->mParserOutput = $parserOutput; + $this->mLinks = $parserOutput->getLinks(); + $this->mImages = $parserOutput->getImages(); + $this->mTemplates = $parserOutput->getTemplates(); + $this->mExternals = $parserOutput->getExternalLinks(); + $this->mCategories = $parserOutput->getCategories(); + $this->mProperties = $parserOutput->getProperties(); + $this->mInterwikis = $parserOutput->getInterwikiLinks(); + + # Convert the format of the interlanguage links + # I didn't want to change it in the ParserOutput, because that array is passed all + # the way back to the skin, so either a skin API break would be required, or an + # inefficient back-conversion. + $ill = $parserOutput->getLanguageLinks(); + $this->mInterlangs = array(); + foreach ( $ill as $link ) { + list( $key, $title ) = explode( ':', $link, 2 ); + $this->mInterlangs[$key] = $title; + } + + foreach ( $this->mCategories as &$sortkey ) { + # If the sortkey is longer then 255 bytes, + # it truncated by DB, and then doesn't get + # matched when comparing existing vs current + # categories, causing bug 25254. + # Also. substr behaves weird when given "". + if ( $sortkey !== '' ) { + $sortkey = substr( $sortkey, 0, 255 ); + } + } + + $this->mRecursive = $recursive; + + wfRunHooks( 'LinksUpdateConstructed', array( &$this ) ); } /** * Update link tables with outgoing links from an updated article - * Relies on the 'link cache' to be filled out. */ - - function doUpdate() { - global $wgUseBetterLinksUpdate, $wgLinkCache, $wgDBtransactions; - global $wgEnablePersistentLC, $wgUseCategoryMagic; + public function doUpdate() { + global $wgUseDumbLinkUpdate; - $fname = 'LinksUpdate::doUpdate'; - wfProfileIn( $fname ); + wfRunHooks( 'LinksUpdate', array( &$this ) ); + if ( $wgUseDumbLinkUpdate ) { + $this->doDumbUpdate(); + } else { + $this->doIncrementalUpdate(); + } + wfRunHooks( 'LinksUpdateComplete', array( &$this ) ); + } - $del = array(); - $add = array(); - - $dbw =& wfGetDB( DB_MASTER ); - $links = $dbw->tableName( 'links' ); - $brokenlinks = $dbw->tableName( 'brokenlinks' ); - $imagelinks = $dbw->tableName( 'imagelinks' ); - $categorylinks = $dbw->tableName( 'categorylinks' ); - - #------------------------------------------------------------------------------ - # Good links - - if ( $wgLinkCache->incrementalSetup( LINKCACHE_GOOD, $del, $add ) ) { - # Delete where necessary - if ( count( $del ) ) { - $sql = "DELETE FROM $links WHERE l_from={$this->mId} AND l_to IN(". - implode( ',', $del ) . ')'; - $dbw->query( $sql, $fname ); - } + protected function doIncrementalUpdate() { + wfProfileIn( __METHOD__ ); + + # Page links + $existing = $this->getExistingLinks(); + $this->incrTableUpdate( 'pagelinks', 'pl', $this->getLinkDeletions( $existing ), + $this->getLinkInsertions( $existing ) ); + + # Image links + $existing = $this->getExistingImages(); + + $imageDeletes = $this->getImageDeletions( $existing ); + $this->incrTableUpdate( 'imagelinks', 'il', $imageDeletes, + $this->getImageInsertions( $existing ) ); + + # Invalidate all image description pages which had links added or removed + $imageUpdates = $imageDeletes + array_diff_key( $this->mImages, $existing ); + $this->invalidateImageDescriptions( $imageUpdates ); + + # External links + $existing = $this->getExistingExternals(); + $this->incrTableUpdate( 'externallinks', 'el', $this->getExternalDeletions( $existing ), + $this->getExternalInsertions( $existing ) ); + + # Language links + $existing = $this->getExistingInterlangs(); + $this->incrTableUpdate( 'langlinks', 'll', $this->getInterlangDeletions( $existing ), + $this->getInterlangInsertions( $existing ) ); + + # Inline interwiki links + $existing = $this->getExistingInterwikis(); + $this->incrTableUpdate( 'iwlinks', 'iwl', $this->getInterwikiDeletions( $existing ), + $this->getInterwikiInsertions( $existing ) ); + + # Template links + $existing = $this->getExistingTemplates(); + $this->incrTableUpdate( 'templatelinks', 'tl', $this->getTemplateDeletions( $existing ), + $this->getTemplateInsertions( $existing ) ); + + # Category links + $existing = $this->getExistingCategories(); + + $categoryDeletes = $this->getCategoryDeletions( $existing ); + + $this->incrTableUpdate( 'categorylinks', 'cl', $categoryDeletes, + $this->getCategoryInsertions( $existing ) ); + + # Invalidate all categories which were added, deleted or changed (set symmetric difference) + $categoryInserts = array_diff_assoc( $this->mCategories, $existing ); + $categoryUpdates = $categoryInserts + $categoryDeletes; + $this->invalidateCategories( $categoryUpdates ); + $this->updateCategoryCounts( $categoryInserts, $categoryDeletes ); + + # Page properties + $existing = $this->getExistingProperties(); + + $propertiesDeletes = $this->getPropertyDeletions( $existing ); + + $this->incrTableUpdate( 'page_props', 'pp', $propertiesDeletes, + $this->getPropertyInsertions( $existing ) ); + + # Invalidate the necessary pages + $changed = $propertiesDeletes + array_diff_assoc( $this->mProperties, $existing ); + $this->invalidateProperties( $changed ); + + # Refresh links of all pages including this page + # This will be in a separate transaction + if ( $this->mRecursive ) { + $this->queueRecursiveJobs(); + } + + wfProfileOut( __METHOD__ ); + } + + /** + * 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 + */ + protected function doDumbUpdate() { + wfProfileIn( __METHOD__ ); + + # Refresh category pages and image description pages + $existing = $this->getExistingCategories(); + $categoryInserts = array_diff_assoc( $this->mCategories, $existing ); + $categoryDeletes = array_diff_assoc( $existing, $this->mCategories ); + $categoryUpdates = $categoryInserts + $categoryDeletes; + $existing = $this->getExistingImages(); + $imageUpdates = array_diff_key( $existing, $this->mImages ) + array_diff_key( $this->mImages, $existing ); + + $this->dumbTableUpdate( 'pagelinks', $this->getLinkInsertions(), 'pl_from' ); + $this->dumbTableUpdate( 'imagelinks', $this->getImageInsertions(), 'il_from' ); + $this->dumbTableUpdate( 'categorylinks', $this->getCategoryInsertions(), 'cl_from' ); + $this->dumbTableUpdate( 'templatelinks', $this->getTemplateInsertions(), 'tl_from' ); + $this->dumbTableUpdate( 'externallinks', $this->getExternalInsertions(), 'el_from' ); + $this->dumbTableUpdate( 'langlinks', $this->getInterlangInsertions(),'ll_from' ); + $this->dumbTableUpdate( 'iwlinks', $this->getInterwikiInsertions(),'iwl_from' ); + $this->dumbTableUpdate( 'page_props', $this->getPropertyInsertions(), 'pp_page' ); + + # Update the cache of all the category pages and image description + # pages which were changed, and fix the category table count + $this->invalidateCategories( $categoryUpdates ); + $this->updateCategoryCounts( $categoryInserts, $categoryDeletes ); + $this->invalidateImageDescriptions( $imageUpdates ); + + # Refresh links of all pages including this page + # This will be in a separate transaction + if ( $this->mRecursive ) { + $this->queueRecursiveJobs(); + } + + wfProfileOut( __METHOD__ ); + } + + function queueRecursiveJobs() { + global $wgUpdateRowsPerJob; + wfProfileIn( __METHOD__ ); + + $cache = $this->mTitle->getBacklinkCache(); + $batches = $cache->partition( 'templatelinks', $wgUpdateRowsPerJob ); + if ( !$batches ) { + wfProfileOut( __METHOD__ ); + return; + } + $jobs = array(); + foreach ( $batches as $batch ) { + list( $start, $end ) = $batch; + $params = array( + 'start' => $start, + 'end' => $end, + ); + $jobs[] = new RefreshLinksJob2( $this->mTitle, $params ); + } + Job::batchInsert( $jobs ); + + wfProfileOut( __METHOD__ ); + } + + /** + * Invalidate the cache of a list of pages from a single namespace + * + * @param $namespace Integer + * @param $dbkeys Array + */ + function invalidatePages( $namespace, $dbkeys ) { + if ( !count( $dbkeys ) ) { + return; + } + + /** + * Determine which pages need to be updated + * This is necessary to prevent the job queue from smashing the DB with + * large numbers of concurrent invalidations of the same page + */ + $now = $this->mDb->timestamp(); + $ids = array(); + $res = $this->mDb->select( 'page', array( 'page_id' ), + array( + 'page_namespace' => $namespace, + 'page_title IN (' . $this->mDb->makeList( $dbkeys ) . ')', + 'page_touched < ' . $this->mDb->addQuotes( $now ) + ), __METHOD__ + ); + foreach ( $res as $row ) { + $ids[] = $row->page_id; + } + if ( !count( $ids ) ) { + return; + } + + /** + * Do the update + * We still need the page_touched condition, in case the row has changed since + * the non-locking select above. + */ + $this->mDb->update( 'page', array( 'page_touched' => $now ), + array( + 'page_id IN (' . $this->mDb->makeList( $ids ) . ')', + 'page_touched < ' . $this->mDb->addQuotes( $now ) + ), __METHOD__ + ); + } + + function invalidateCategories( $cats ) { + $this->invalidatePages( NS_CATEGORY, array_keys( $cats ) ); + } + + /** + * Update all the appropriate counts in the category table. + * @param $added associative array of category name => sort key + * @param $deleted associative array of category name => sort key + */ + function updateCategoryCounts( $added, $deleted ) { + $a = new Article($this->mTitle); + $a->updateCategoryCounts( + array_keys( $added ), array_keys( $deleted ) + ); + } + + function invalidateImageDescriptions( $images ) { + $this->invalidatePages( NS_FILE, array_keys( $images ) ); + } + + function dumbTableUpdate( $table, $insertions, $fromField ) { + $this->mDb->delete( $table, array( $fromField => $this->mId ), __METHOD__ ); + if ( count( $insertions ) ) { + # The link array was constructed without FOR UPDATE, so there may + # be collisions. This may cause minor link table inconsistencies, + # which is better than crippling the site with lock contention. + $this->mDb->insert( $table, $insertions, __METHOD__, array( 'IGNORE' ) ); + } + } + + /** + * Update a table by doing a delete query then an insert query + * @private + */ + function incrTableUpdate( $table, $prefix, $deletions, $insertions ) { + if ( $table == 'page_props' ) { + $fromField = 'pp_page'; } else { - # Delete everything - $dbw->delete( 'links', array( 'l_from' => $this->mId ), $fname ); - - # Get the addition list - $add = $wgLinkCache->getGoodLinks(); - } - - # Do the insertion - if ( 0 != count( $add ) ) { - $arr=array(); - foreach($add as $lt=>$lid) - array_push( $arr, array( - 'l_from' => $this->mId, - 'l_to' => $lid ) ); - # 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( 'links', $arr, $fname, array( 'IGNORE' ) ); - } - - #------------------------------------------------------------------------------ - # Bad links - - if ( $wgLinkCache->incrementalSetup( LINKCACHE_BAD, $del, $add ) ) { - # Delete where necessary - if ( count( $del ) ) { - $sql = "DELETE FROM $brokenlinks WHERE bl_from={$this->mId} AND bl_to IN("; - $first = true; - foreach( $del as $badTitle ) { - if ( $first ) { - $first = false; - } else { - $sql .= ','; - } - $sql .= $dbw->addQuotes( $badTitle ); - } - $sql .= ')'; - $dbw->query( $sql, $fname ); + $fromField = "{$prefix}_from"; + } + $where = array( $fromField => $this->mId ); + if ( $table == 'pagelinks' || $table == 'templatelinks' || $table == 'iwlinks' ) { + if ( $table == 'iwlinks' ) { + $baseKey = 'iwl_prefix'; + } else { + $baseKey = "{$prefix}_namespace"; + } + $clause = $this->mDb->makeWhereFrom2d( $deletions, $baseKey, "{$prefix}_title" ); + if ( $clause ) { + $where[] = $clause; + } else { + $where = false; } } else { - # Delete all - $dbw->delete( 'brokenlinks', array( 'bl_from' => $this->mId ) ); - - # Get addition list - $add = $wgLinkCache->getBadLinks(); - } - - # Do additions - $sql = ''; - if ( 0 != count ( $add ) ) { - $arr = array(); - foreach( $add as $blt ) { - array_push( $arr, array( - 'bl_from' => $this->mId, - 'bl_to' => $blt ) ); + if ( $table == 'langlinks' ) { + $toField = 'll_lang'; + } elseif ( $table == 'page_props' ) { + $toField = 'pp_propname'; + } else { + $toField = $prefix . '_to'; } - $dbw->insert( 'brokenlinks', $arr, $fname, array( 'IGNORE' ) ); + if ( count( $deletions ) ) { + $where[] = "$toField IN (" . $this->mDb->makeList( array_keys( $deletions ) ) . ')'; + } else { + $where = false; + } + } + if ( $where ) { + $this->mDb->delete( $table, $where, __METHOD__ ); } + if ( count( $insertions ) ) { + $this->mDb->insert( $table, $insertions, __METHOD__, 'IGNORE' ); + } + } - #------------------------------------------------------------------------------ - # Image links - $sql = "DELETE FROM $imagelinks WHERE il_from='{$this->mId}'"; - $dbw->query( $sql, $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 ) ); + + /** + * Get an array of pagelinks insertions for passing to the DB + * Skips the titles specified by the 2-D array $existing + * @private + */ + function getLinkInsertions( $existing = array() ) { + $arr = array(); + foreach( $this->mLinks as $ns => $dbkeys ) { + $diffs = isset( $existing[$ns] ) + ? array_diff_key( $dbkeys, $existing[$ns] ) + : $dbkeys; + foreach ( $diffs as $dbk => $id ) { + $arr[] = array( + 'pl_from' => $this->mId, + 'pl_namespace' => $ns, + 'pl_title' => $dbk + ); } - $dbw->insert('imagelinks', $arr, $fname, array('IGNORE')); } + return $arr; + } - #------------------------------------------------------------------------------ - # Category links - if( $wgUseCategoryMagic ) { - $sql = "DELETE FROM $categorylinks WHERE cl_from='{$this->mId}'"; - $dbw->query( $sql, $fname ); - - # Get addition list - $add = $wgLinkCache->getCategoryLinks(); - - # Do the insertion - $sql = ''; - if ( 0 != count ( $add ) ) { - $arr = array(); - foreach( $add as $cname => $sortkey ) { - $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' ) ); + /** + * Get an array of template insertions. Like getLinkInsertions() + * @private + */ + function getTemplateInsertions( $existing = array() ) { + $arr = array(); + foreach( $this->mTemplates as $ns => $dbkeys ) { + $diffs = isset( $existing[$ns] ) ? array_diff_key( $dbkeys, $existing[$ns] ) : $dbkeys; + foreach ( $diffs as $dbk => $id ) { + $arr[] = array( + 'tl_from' => $this->mId, + 'tl_namespace' => $ns, + 'tl_title' => $dbk + ); + } + } + return $arr; + } + + /** + * Get an array of image insertions + * Skips the names specified in $existing + * @private + */ + function getImageInsertions( $existing = array() ) { + $arr = array(); + $diffs = array_diff_key( $this->mImages, $existing ); + foreach( $diffs as $iname => $dummy ) { + $arr[] = array( + 'il_from' => $this->mId, + 'il_to' => $iname + ); + } + return $arr; + } + + /** + * Get an array of externallinks insertions. Skips the names specified in $existing + * @private + */ + function getExternalInsertions( $existing = array() ) { + $arr = array(); + $diffs = array_diff_key( $this->mExternals, $existing ); + foreach( $diffs as $url => $dummy ) { + $arr[] = array( + 'el_from' => $this->mId, + 'el_to' => $url, + 'el_index' => wfMakeUrlIndex( $url ), + ); + } + return $arr; + } + + /** + * Get an array of category insertions + * + * @param $existing Array mapping existing category names to sort keys. If both + * match a link in $this, the link will be omitted from the output + * @private + */ + function getCategoryInsertions( $existing = array() ) { + global $wgContLang, $wgCategoryCollation; + $diffs = array_diff_assoc( $this->mCategories, $existing ); + $arr = array(); + foreach ( $diffs as $name => $prefix ) { + $nt = Title::makeTitleSafe( NS_CATEGORY, $name ); + $wgContLang->findVariantLink( $name, $nt, true ); + + if ( $this->mTitle->getNamespace() == NS_CATEGORY ) { + $type = 'subcat'; + } elseif ( $this->mTitle->getNamespace() == NS_FILE ) { + $type = 'file'; + } else { + $type = 'page'; } + + # Treat custom sortkeys as a prefix, so that if multiple + # things are forced to sort as '*' or something, they'll + # sort properly in the category rather than in page_id + # order or such. + $sortkey = Collation::singleton()->getSortKey( + $this->mTitle->getCategorySortkey( $prefix ) ); + + $arr[] = array( + 'cl_from' => $this->mId, + 'cl_to' => $name, + 'cl_sortkey' => $sortkey, + 'cl_timestamp' => $this->mDb->timestamp(), + 'cl_sortkey_prefix' => $prefix, + 'cl_collation' => $wgCategoryCollation, + 'cl_type' => $type, + ); } - - $this->fixBrokenLinks(); - - wfProfileOut( $fname ); - } - - /** - * Old inefficient update function - * Used for rebuilding the link table - * @todo Only used by ./maintenance/refreshLinks.inc probably need to be replaced - * @deprecated - */ - function doDumbUpdate() { - global $wgLinkCache, $wgDBtransactions, $wgUseCategoryMagic; - $fname = 'LinksUpdate::doDumbUpdate'; - wfProfileIn( $fname ); - - - $dbw =& wfGetDB( DB_MASTER ); - $links = $dbw->tableName( 'links' ); - $brokenlinks = $dbw->tableName( 'brokenlinks' ); - $imagelinks = $dbw->tableName( 'imagelinks' ); - $categorylinks = $dbw->tableName( 'categorylinks' ); - - $sql = "DELETE FROM $links WHERE l_from={$this->mId}"; - $dbw->query( $sql, $fname ); - - $a = $wgLinkCache->getGoodLinks(); - if ( 0 != count( $a ) ) { - $arr = array(); - foreach( $a as $lt => $lid ) { - array_push( $arr, array( - 'l_from' => $this->mId, - 'l_to' => $lid ) ); + return $arr; + } + + /** + * Get an array of interlanguage link insertions + * + * @param $existing Array mapping existing language codes to titles + * @private + */ + function getInterlangInsertions( $existing = array() ) { + $diffs = array_diff_assoc( $this->mInterlangs, $existing ); + $arr = array(); + foreach( $diffs as $lang => $title ) { + $arr[] = array( + 'll_from' => $this->mId, + 'll_lang' => $lang, + 'll_title' => $title + ); + } + return $arr; + } + + /** + * Get an array of page property insertions + */ + function getPropertyInsertions( $existing = array() ) { + $diffs = array_diff_assoc( $this->mProperties, $existing ); + $arr = array(); + foreach ( $diffs as $name => $value ) { + $arr[] = array( + 'pp_page' => $this->mId, + 'pp_propname' => $name, + 'pp_value' => $value, + ); + } + return $arr; + } + + /** + * Get an array of interwiki insertions for passing to the DB + * Skips the titles specified by the 2-D array $existing + * @private + */ + function getInterwikiInsertions( $existing = array() ) { + $arr = array(); + foreach( $this->mInterwikis as $prefix => $dbkeys ) { + $diffs = isset( $existing[$prefix] ) ? array_diff_key( $dbkeys, $existing[$prefix] ) : $dbkeys; + foreach ( $diffs as $dbk => $id ) { + $arr[] = array( + 'iwl_from' => $this->mId, + 'iwl_prefix' => $prefix, + 'iwl_title' => $dbk + ); } - $dbw->insert( 'links', $arr, $fname, array( 'IGNORE' ) ); } + return $arr; + } - $sql = "DELETE FROM $brokenlinks WHERE bl_from={$this->mId}"; - $dbw->query( $sql, $fname ); + /** + * Given an array of existing links, returns those links which are not in $this + * and thus should be deleted. + * @private + */ + function getLinkDeletions( $existing ) { + $del = array(); + foreach ( $existing as $ns => $dbkeys ) { + if ( isset( $this->mLinks[$ns] ) ) { + $del[$ns] = array_diff_key( $existing[$ns], $this->mLinks[$ns] ); + } else { + $del[$ns] = $existing[$ns]; + } + } + return $del; + } - $a = $wgLinkCache->getBadLinks(); - if ( 0 != count ( $a ) ) { - $arr = array(); - foreach( $a as $blt ) { - array_push($arr,array( - 'bl_from' => $this->mId, - 'bl_to' => $blt)); + /** + * Given an array of existing templates, returns those templates which are not in $this + * and thus should be deleted. + * @private + */ + function getTemplateDeletions( $existing ) { + $del = array(); + foreach ( $existing as $ns => $dbkeys ) { + if ( isset( $this->mTemplates[$ns] ) ) { + $del[$ns] = array_diff_key( $existing[$ns], $this->mTemplates[$ns] ); + } else { + $del[$ns] = $existing[$ns]; } - $dbw->insert( 'brokenlinks', $arr, $fname, array( 'IGNORE' ) ); - } - - $sql = "DELETE FROM $imagelinks WHERE il_from={$this->mId}"; - $dbw->query( $sql, $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 ) { - $sql = "DELETE FROM $categorylinks WHERE cl_from='{$this->mId}'"; - $dbw->query( $sql, $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 ) ); + } + return $del; + } + + /** + * Given an array of existing images, returns those images which are not in $this + * and thus should be deleted. + * @private + */ + function getImageDeletions( $existing ) { + return array_diff_key( $existing, $this->mImages ); + } + + /** + * Given an array of existing external links, returns those links which are not + * in $this and thus should be deleted. + * @private + */ + function getExternalDeletions( $existing ) { + return array_diff_key( $existing, $this->mExternals ); + } + + /** + * Given an array of existing categories, returns those categories which are not in $this + * and thus should be deleted. + * @private + */ + function getCategoryDeletions( $existing ) { + return array_diff_assoc( $existing, $this->mCategories ); + } + + /** + * Given an array of existing interlanguage links, returns those links which are not + * in $this and thus should be deleted. + * @private + */ + function getInterlangDeletions( $existing ) { + return array_diff_assoc( $existing, $this->mInterlangs ); + } + + /** + * Get array of properties which should be deleted. + * @private + */ + function getPropertyDeletions( $existing ) { + return array_diff_assoc( $existing, $this->mProperties ); + } + + /** + * Given an array of existing interwiki links, returns those links which are not in $this + * and thus should be deleted. + * @private + */ + function getInterwikiDeletions( $existing ) { + $del = array(); + foreach ( $existing as $prefix => $dbkeys ) { + if ( isset( $this->mInterwikis[$prefix] ) ) { + $del[$prefix] = array_diff_key( $existing[$prefix], $this->mInterwikis[$prefix] ); + } else { + $del[$prefix] = $existing[$prefix]; + } + } + return $del; + } + + /** + * Get an array of existing links, as a 2-D array + * @private + */ + function getExistingLinks() { + $res = $this->mDb->select( 'pagelinks', array( 'pl_namespace', 'pl_title' ), + array( 'pl_from' => $this->mId ), __METHOD__, $this->mOptions ); + $arr = array(); + foreach ( $res as $row ) { + if ( !isset( $arr[$row->pl_namespace] ) ) { + $arr[$row->pl_namespace] = array(); + } + $arr[$row->pl_namespace][$row->pl_title] = 1; + } + return $arr; + } + + /** + * Get an array of existing templates, as a 2-D array + * @private + */ + function getExistingTemplates() { + $res = $this->mDb->select( 'templatelinks', array( 'tl_namespace', 'tl_title' ), + array( 'tl_from' => $this->mId ), __METHOD__, $this->mOptions ); + $arr = array(); + foreach ( $res as $row ) { + if ( !isset( $arr[$row->tl_namespace] ) ) { + $arr[$row->tl_namespace] = array(); + } + $arr[$row->tl_namespace][$row->tl_title] = 1; + } + return $arr; + } + + /** + * Get an array of existing images, image names in the keys + * @private + */ + function getExistingImages() { + $res = $this->mDb->select( 'imagelinks', array( 'il_to' ), + array( 'il_from' => $this->mId ), __METHOD__, $this->mOptions ); + $arr = array(); + foreach ( $res as $row ) { + $arr[$row->il_to] = 1; + } + return $arr; + } + + /** + * Get an array of existing external links, URLs in the keys + * @private + */ + function getExistingExternals() { + $res = $this->mDb->select( 'externallinks', array( 'el_to' ), + array( 'el_from' => $this->mId ), __METHOD__, $this->mOptions ); + $arr = array(); + foreach ( $res as $row ) { + $arr[$row->el_to] = 1; + } + return $arr; + } + + /** + * Get an array of existing categories, with the name in the key and sort key in the value. + * @private + */ + function getExistingCategories() { + $res = $this->mDb->select( 'categorylinks', array( 'cl_to', 'cl_sortkey_prefix' ), + array( 'cl_from' => $this->mId ), __METHOD__, $this->mOptions ); + $arr = array(); + foreach ( $res as $row ) { + $arr[$row->cl_to] = $row->cl_sortkey_prefix; + } + return $arr; + } + + /** + * Get an array of existing interlanguage links, with the language code in the key and the + * title in the value. + * @private + */ + function getExistingInterlangs() { + $res = $this->mDb->select( 'langlinks', array( 'll_lang', 'll_title' ), + array( 'll_from' => $this->mId ), __METHOD__, $this->mOptions ); + $arr = array(); + foreach ( $res as $row ) { + $arr[$row->ll_lang] = $row->ll_title; + } + return $arr; + } + + /** + * Get an array of existing inline interwiki links, as a 2-D array + * @return array (prefix => array(dbkey => 1)) + */ + protected function getExistingInterwikis() { + $res = $this->mDb->select( 'iwlinks', array( 'iwl_prefix', 'iwl_title' ), + array( 'iwl_from' => $this->mId ), __METHOD__, $this->mOptions ); + $arr = array(); + foreach ( $res as $row ) { + if ( !isset( $arr[$row->iwl_prefix] ) ) { + $arr[$row->iwl_prefix] = array(); + } + $arr[$row->iwl_prefix][$row->iwl_title] = 1; + } + return $arr; + } + + /** + * Get an array of existing categories, with the name in the key and sort key in the value. + * @private + */ + function getExistingProperties() { + $res = $this->mDb->select( 'page_props', array( 'pp_propname', 'pp_value' ), + array( 'pp_page' => $this->mId ), __METHOD__, $this->mOptions ); + $arr = array(); + foreach ( $res as $row ) { + $arr[$row->pp_propname] = $row->pp_value; + } + return $arr; + } + + + /** + * Return the title object of the page being updated + */ + function getTitle() { + return $this->mTitle; + } + + /** + * Return the list of images used as generated by the parser + */ + public function getImages() { + return $this->mImages; + } + + /** + * Invalidate any necessary link lists related to page property changes + */ + function invalidateProperties( $changed ) { + global $wgPagePropLinkInvalidations; + + foreach ( $changed as $name => $value ) { + if ( isset( $wgPagePropLinkInvalidations[$name] ) ) { + $inv = $wgPagePropLinkInvalidations[$name]; + if ( !is_array( $inv ) ) { + $inv = array( $inv ); + } + foreach ( $inv as $table ) { + $update = new HTMLCacheUpdate( $this->mTitle, $table ); + $update->doUpdate(); } - $dbw->insert( 'categorylinks', $arr, $fname, array( 'IGNORE' ) ); } } - $this->fixBrokenLinks(); - wfProfileOut( $fname ); - } - - /** - * Update any brokenlinks *to* this page - * Call for a newly created page, or just to make sure state is consistent - */ - function fixBrokenLinks() { - $fname = 'LinksUpdate::fixBrokenLinks'; - - $dbw =& wfGetDB( DB_MASTER ); - $page = $dbw->tableName( 'page' ); - $links = $dbw->tableName( 'links' ); - - $res = $dbw->select( 'brokenlinks', array( 'bl_from' ), array( 'bl_to' => $this->mTitle ), - $fname, 'FOR UPDATE' ); - if ( 0 == $dbw->numRows( $res ) ) { return; } - - $arr=array(); - $now = $dbw->timestamp(); - $sql2 = "UPDATE $page SET page_touched='{$now}' WHERE page_id IN ("; - $first = true; - while ( $row = $dbw->fetchObject( $res ) ) { - if ( ! $first ) { $sql2 .= ","; } - $first = false; - array_push( $arr, array( - 'l_from' => $row->bl_from, - 'l_to' => $this->mId ) ); - $sql2 .= $row->bl_from; - } - $sql2 .= ')'; - - # Ignore errors. If a link existed in both the brokenlinks table and the links - # table, that's an error which can be fixed at this stage by simply ignoring collisions - $dbw->insert( 'links', $arr, $fname, array( 'IGNORE' ) ); - $dbw->query( $sql2, $fname ); - $dbw->delete( 'brokenlinks', array( 'bl_to' => $this->mTitle ), $fname ); } } -?> \ No newline at end of file