-<?
-# See deferred.doc
+<?php
+/**
+ * See deferred.txt
+ * @package MediaWiki
+ */
+/**
+ * @todo document
+ * @package MediaWiki
+ */
class LinksUpdate {
- /* private */ var $mId, $mTitle;
+ /**#@+
+ * @access private
+ */
+ var $mId, $mTitle;
+ /**#@-*/
- function LinksUpdate( $id, $title )
- {
+ /**
+ * Constructor
+ * Initialize private variables
+ * @param integer $id
+ * @param string $title
+ */
+ function LinksUpdate( $id, $title ) {
$this->mId = $id;
$this->mTitle = $title;
}
- function doUpdate()
- {
- global $wgLinkCache, $wgDBtransactions;
- $fname = "LinksUpdate::doUpdate";
+ /**
+ * 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;
+
+ $fname = 'LinksUpdate::doUpdate';
wfProfileIn( $fname );
- $t = wfStrencode( $this->mTitle );
- if( $wgDBtransactions ) {
- $sql = "BEGIN";
- wfQuery( $sql, $fname );
+ $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 );
+ }
+ } 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 );
+ }
+ } 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 ) );
+ }
+ $dbw->insert( 'brokenlinks', $arr, $fname, array( '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 ) );
+ }
+ $dbw->insert('imagelinks', $arr, $fname, array('IGNORE'));
+ }
+
+ #------------------------------------------------------------------------------
+ # 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' ) );
+ }
}
- $sql = "DELETE FROM links WHERE l_from='{$t}'";
- wfQuery( $sql, $fname );
+ $this->fixBrokenLinks();
+
+ 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 );
+ $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();
- $sql = "";
if ( 0 != count( $a ) ) {
- $sql = "INSERT INTO links (l_from,l_to) VALUES ";
- $first = true;
+ $arr = array();
foreach( $a as $lt => $lid ) {
- if ( ! $first ) { $sql .= ","; }
- $first = false;
-
- $sql .= "('{$t}',{$lid})";
+ array_push( $arr, array(
+ 'l_from' => $this->mId,
+ 'l_to' => $lid ) );
}
+ $dbw->insert( 'links', $arr, $fname, array( 'IGNORE' ) );
}
- if ( "" != $sql ) { wfQuery( $sql, $fname ); }
- $sql = "DELETE FROM brokenlinks WHERE bl_from={$this->mId}";
- wfQuery( $sql, $fname );
+ $sql = "DELETE FROM $brokenlinks WHERE bl_from={$this->mId}";
+ $dbw->query( $sql, $fname );
$a = $wgLinkCache->getBadLinks();
- $sql = "";
if ( 0 != count ( $a ) ) {
- $sql = "INSERT INTO brokenlinks (bl_from,bl_to) VALUES ";
- $first = true;
+ $arr = array();
foreach( $a as $blt ) {
- $blt = wfStrencode( $blt );
- if ( ! $first ) { $sql .= ","; }
- $first = false;
-
- $sql .= "({$this->mId},'{$blt}')";
+ array_push($arr,array(
+ 'bl_from' => $this->mId,
+ 'bl_to' => $blt));
}
+ $dbw->insert( 'brokenlinks', $arr, $fname, array( 'IGNORE' ) );
}
- if ( "" != $sql ) { wfQuery( $sql, $fname ); }
-
- $sql = "DELETE FROM imagelinks WHERE il_from='{$t}'";
- wfQuery( $sql, $fname );
+
+ $sql = "DELETE FROM $imagelinks WHERE il_from={$this->mId}";
+ $dbw->query( $sql, $fname );
$a = $wgLinkCache->getImageLinks();
- $sql = "";
+ $sql = '';
if ( 0 != count ( $a ) ) {
- $sql = "INSERT INTO imagelinks (il_from,il_to) VALUES ";
- $first = true;
- foreach( $a as $iname => $val ) {
- $iname = wfStrencode( $iname );
- if ( ! $first ) { $sql .= ","; }
- $first = false;
-
- $sql .= "('{$t}','{$iname}')";
+ $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 ) );
+ }
+ $dbw->insert( 'categorylinks', $arr, $fname, array( 'IGNORE' ) );
}
}
- if ( "" != $sql ) { wfQuery( $sql, $fname ); }
+ $this->fixBrokenLinks();
+ wfProfileOut( $fname );
+ }
- $sql = "SELECT bl_from FROM brokenlinks WHERE bl_to='{$t}'";
- $res = wfQuery( $sql, $fname );
- if ( 0 == wfNumRows( $res ) ) { return; }
+ /**
+ * 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';
- $sql = "INSERT INTO links (l_from,l_to) VALUES ";
- $now = wfTimestampNow();
- $sql2 = "UPDATE cur SET cur_touched='{$now}' WHERE cur_id IN (";
+ $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 = wfFetchObject( $res ) ) {
- if ( ! $first ) { $sql .= ","; $sql2 .= ","; }
+ while ( $row = $dbw->fetchObject( $res ) ) {
+ if ( ! $first ) { $sql2 .= ","; }
$first = false;
- $nl = wfStrencode( Article::nameOf( $row->bl_from ) );
-
- $sql .= "('{$nl}',{$this->mId})";
+ array_push( $arr, array(
+ 'l_from' => $row->bl_from,
+ 'l_to' => $this->mId ) );
$sql2 .= $row->bl_from;
}
- $sql2 .= ")";
- wfQuery( $sql, $fname );
- wfQuery( $sql2, $fname );
-
- $sql = "DELETE FROM brokenlinks WHERE bl_to='{$t}'";
- wfQuery( $sql, $fname );
-
- if( $wgDBtransactions ) {
- $sql = "COMMIT";
- wfQuery( $sql, $fname );
- }
- wfProfileOut();
+ $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
dépôts / lhc / web / wiklou.git / blobdiff