251 lines
6.3 KiB
PHP
251 lines
6.3 KiB
PHP
<?php
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# See deferred.doc
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class LinksUpdate {
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/* private */ var $mId, $mTitle;
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function LinksUpdate( $id, $title )
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{
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$this->mId = $id;
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$this->mTitle = $title;
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$this->mTitleEnc = wfStrencode( $title );
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}
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function doUpdate()
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{
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global $wgUseBetterLinksUpdate, $wgLinkCache, $wgDBtransactions;
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global $wgEnablePersistentLC;
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/* Update link tables with outgoing links from an updated article */
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/* Relies on the 'link cache' to be filled out */
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$fname = "LinksUpdate::doUpdate";
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wfProfileIn( $fname );
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$del = array();
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$add = array();
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if( $wgDBtransactions ) {
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$sql = "BEGIN";
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wfQuery( $sql, DB_WRITE, $fname );
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}
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#------------------------------------------------------------------------------
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# Good links
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if ( $wgLinkCache->incrementalSetup( LINKCACHE_GOOD, $del, $add ) ) {
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# Delete where necessary
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if ( count( $del ) ) {
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$sql = "DELETE FROM links WHERE l_from='{$this->mTitleEnc}' AND l_to IN(".
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implode( ",", $del ) . ")";
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wfQuery( $sql, DB_WRITE, $fname );
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}
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} else {
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# Delete everything
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$sql = "DELETE FROM links WHERE l_from='{$this->mTitleEnc}'";
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wfQuery( $sql, DB_WRITE, $fname );
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# Get the addition list
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$add = $wgLinkCache->getGoodLinks();
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}
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# Do the insertion
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$sql = "";
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if ( 0 != count( $add ) ) {
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$sql = "INSERT INTO links (l_from,l_to) VALUES ";
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$first = true;
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foreach( $add as $lt => $lid ) {
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if ( ! $first ) { $sql .= ","; }
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$first = false;
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$sql .= "('{$this->mTitleEnc}',{$lid})";
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}
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}
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if ( "" != $sql ) {
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wfQuery( $sql, DB_WRITE, $fname );
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}
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#------------------------------------------------------------------------------
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# Bad links
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if ( $wgLinkCache->incrementalSetup( LINKCACHE_BAD, $del, $add ) ) {
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# Delete where necessary
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if ( count( $del ) ) {
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$sql = "DELETE FROM brokenlinks WHERE bl_from={$this->mId} AND bl_to IN('" .
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implode( "','", array_map( "wfStrencode", $del ) ) . "')";
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wfQuery( $sql, DB_WRITE, $fname );
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}
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} else {
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# Delete all
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$sql = "DELETE FROM brokenlinks WHERE bl_from={$this->mId}";
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wfQuery( $sql, DB_WRITE, $fname );
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# Get addition list
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$add = $wgLinkCache->getBadLinks();
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}
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# Do additions
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$sql = "";
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if ( 0 != count ( $add ) ) {
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$sql = "INSERT INTO brokenlinks (bl_from,bl_to) VALUES ";
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$first = true;
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foreach( $add as $blt ) {
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$blt = wfStrencode( $blt );
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if ( ! $first ) { $sql .= ","; }
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$first = false;
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$sql .= "({$this->mId},'{$blt}')";
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}
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}
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if ( "" != $sql ) {
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wfQuery( $sql, DB_WRITE, $fname );
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}
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#------------------------------------------------------------------------------
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# Image links
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$sql = "DELETE FROM imagelinks WHERE il_from='{$this->mTitleEnc}'";
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wfQuery( $sql, DB_WRITE, $fname );
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# Get addition list
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$add = $wgLinkCache->getImageLinks();
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# Do the insertion
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$sql = "";
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$image = Namespace::getImage();
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if ( 0 != count ( $add ) ) {
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$sql = "INSERT INTO imagelinks (il_from,il_to) VALUES ";
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$first = true;
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foreach( $add as $iname => $val ) {
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# FIXME: Change all this to avoid unnecessary duplication
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$nt = Title::makeTitle( $image, $iname );
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if( !$nt ) continue;
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$nt->invalidateCache();
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$iname = wfStrencode( $iname );
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if ( ! $first ) { $sql .= ","; }
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$first = false;
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$sql .= "('{$this->mTitleEnc}','{$iname}')";
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}
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}
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if ( "" != $sql ) { wfQuery( $sql, DB_WRITE, $fname ); }
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$this->fixBrokenLinks();
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if( $wgDBtransactions ) {
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$sql = "COMMIT";
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wfQuery( $sql, DB_WRITE, $fname );
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}
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wfProfileOut( $fname );
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}
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function doDumbUpdate()
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{
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# Old inefficient update function
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# Used for rebuilding the link table
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global $wgLinkCache, $wgDBtransactions;
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$fname = "LinksUpdate::doDumbUpdate";
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wfProfileIn( $fname );
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if( $wgDBtransactions ) {
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$sql = "BEGIN";
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wfQuery( $sql, DB_WRITE, $fname );
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}
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$sql = "DELETE FROM links WHERE l_from='{$this->mTitleEnc}'";
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wfQuery( $sql, DB_WRITE, $fname );
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$a = $wgLinkCache->getGoodLinks();
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$sql = "";
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if ( 0 != count( $a ) ) {
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$sql = "INSERT INTO links (l_from,l_to) VALUES ";
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$first = true;
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foreach( $a as $lt => $lid ) {
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if ( ! $first ) { $sql .= ","; }
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$first = false;
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$sql .= "('{$this->mTitleEnc}',{$lid})";
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}
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}
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if ( "" != $sql ) { wfQuery( $sql, DB_WRITE, $fname ); }
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$sql = "DELETE FROM brokenlinks WHERE bl_from={$this->mId}";
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wfQuery( $sql, DB_WRITE, $fname );
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$a = $wgLinkCache->getBadLinks();
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$sql = "";
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if ( 0 != count ( $a ) ) {
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$sql = "INSERT INTO brokenlinks (bl_from,bl_to) VALUES ";
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$first = true;
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foreach( $a as $blt ) {
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$blt = wfStrencode( $blt );
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if ( ! $first ) { $sql .= ","; }
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$first = false;
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$sql .= "({$this->mId},'{$blt}')";
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}
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}
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if ( "" != $sql ) { wfQuery( $sql, DB_WRITE, $fname ); }
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$sql = "DELETE FROM imagelinks WHERE il_from='{$this->mTitleEnc}'";
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wfQuery( $sql, DB_WRITE, $fname );
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$a = $wgLinkCache->getImageLinks();
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$sql = "";
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if ( 0 != count ( $a ) ) {
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$sql = "INSERT INTO imagelinks (il_from,il_to) VALUES ";
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$first = true;
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foreach( $a as $iname => $val ) {
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$iname = wfStrencode( $iname );
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if ( ! $first ) { $sql .= ","; }
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$first = false;
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$sql .= "('{$this->mTitleEnc}','{$iname}')";
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}
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}
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if ( "" != $sql ) { wfQuery( $sql, DB_WRITE, $fname ); }
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$this->fixBrokenLinks();
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if( $wgDBtransactions ) {
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$sql = "COMMIT";
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wfQuery( $sql, DB_WRITE, $fname );
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}
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wfProfileOut( $fname );
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}
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function fixBrokenLinks() {
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/* Update any brokenlinks *to* this page */
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/* Call for a newly created page, or just to make sure state is consistent */
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$sql = "SELECT bl_from FROM brokenlinks WHERE bl_to='{$this->mTitleEnc}'";
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$res = wfQuery( $sql, DB_READ, $fname );
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if ( 0 == wfNumRows( $res ) ) { return; }
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$sql = "INSERT INTO links (l_from,l_to) VALUES ";
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$now = wfTimestampNow();
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$sql2 = "UPDATE cur SET cur_touched='{$now}' WHERE cur_id IN (";
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$first = true;
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while ( $row = wfFetchObject( $res ) ) {
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if ( ! $first ) { $sql .= ","; $sql2 .= ","; }
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$first = false;
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$nl = wfStrencode( Title::nameOf( $row->bl_from ) );
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$sql .= "('{$nl}',{$this->mId})";
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$sql2 .= $row->bl_from;
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}
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$sql2 .= ")";
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wfQuery( $sql, DB_WRITE, $fname );
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wfQuery( $sql2, DB_WRITE, $fname );
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$sql = "DELETE FROM brokenlinks WHERE bl_to='{$this->mTitleEnc}'";
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wfQuery( $sql, DB_WRITE, $fname );
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}
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}
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?>
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