X-Git-Url: http://git.cyclocoop.org/?a=blobdiff_plain;f=includes%2FArticle.php;h=cca2bb0fa7370e1d859292105a91ca1b93bfbdac;hb=d73935a5f0fb09882b4a9269868a9bb68bb29d72;hp=6dea6747dca4845ba7d6eaf040996927080d9d62;hpb=f912c43a127270f56e52732a64895f13e5d63b5e;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/Article.php b/includes/Article.php
index 6dea6747dc..cca2bb0fa7 100644
--- a/includes/Article.php
+++ b/includes/Article.php
@@ -7,7 +7,11 @@
 # Note: edit user interface and cache support functions have been
 # moved to separate EditPage and CacheManager classes.
 
-require_once( 'CacheManager.php' );
+require_once ( 'CacheManager.php' );
+include_once ( 'SpecialValidate.php' ) ;
+
+$wgArticleCurContentFields = false;
+$wgArticleOldContentFields = false;
 
 class Article {
 	/* private */ var $mContent, $mContentLoaded;
@@ -16,12 +20,12 @@ class Article {
 	/* private */ var $mMinorEdit, $mRedirectedFrom;
 	/* private */ var $mTouched, $mFileCache, $mTitle;
 	/* private */ var $mId, $mTable;
-	
+
 	function Article( &$title ) {
 		$this->mTitle =& $title;
 		$this->clear();
 	}
-	
+
 	/* private */ function clear()
 	{
 		$this->mContentLoaded = false;
@@ -62,7 +66,7 @@ class Article {
 		}
 		return $text;
 	}
-	
+
 	/* static */ function compressRevisionText( &$text ) {
 		global $wgCompressRevisions;
 		if( !$wgCompressRevisions ) {
@@ -75,7 +79,7 @@ class Article {
 		$text = gzdeflate( $text );
 		return 'gzip';
 	}
-	
+
 	# Returns the text associated with a "link" type old table row
 	/* static */ function followLink( $link ) {
 		# Split the link into fields and values
@@ -119,7 +123,7 @@ class Article {
 		global $wgLoadBalancer;
 		$fname = 'fetchFromLocation';
 		wfProfileIn( $fname );
-		
+
 		$p = strpos( $location, ':' );
 		if ( $p === false ) {
 			wfProfileOut( $fname );
@@ -132,7 +136,7 @@ class Article {
 			case 'mysql':
 				# MySQL locations are specified by mysql://<machineID>/<dbname>/<tblname>/<index>
 				# Machine ID 0 is the current connection
-				if ( preg_match( '/^mysql:\/\/(\d+)\/([A-Za-z_]+)\/([A-Za-z_]+)\/([A-Za-z_]+)$/', 
+				if ( preg_match( '/^mysql:\/\/(\d+)\/([A-Za-z_]+)\/([A-Za-z_]+)\/([A-Za-z_]+)$/',
 				  $location, $matches ) ) {
 					$machineID = $matches[1];
 					$dbName = $matches[2];
@@ -140,20 +144,20 @@ class Article {
 					$index = $matches[4];
 					if ( $machineID == 0 ) {
 						# Current connection
-						$db =& wfGetDB();
+						$db =& wfGetDB( DB_SLAVE );
 					} else {
 						# Alternate connection
 						$db =& $wgLoadBalancer->getConnection( $machineID );
-						
+
 						if ( array_key_exists( $machineId, $wgKnownMysqlServers ) ) {
 							# Try to open, return false on failure
 							$params = $wgKnownDBServers[$machineId];
-							$db = Database::newFromParams( $params['server'], $params['user'], $params['password'], 
-								$dbName, 1, false, true, true );
+							$db = Database::newFromParams( $params['server'], $params['user'], $params['password'],
+								$dbName, 1, DBO_IGNORE );
 						}
 					}
 					if ( $db->isOpen() ) {
-						$index = wfStrencode( $index );
+						$index = $db->strencode( $index );
 						$res = $db->query( "SELECT blob_data FROM $dbName.$tblName WHERE blob_index='$index'", $fname );
 						$row = $db->fetchObject( $res );
 						$text = $row->text_data;
@@ -214,17 +218,14 @@ class Article {
 			return wfMsg( 'noarticletext' );
 		} else {
 			$this->loadContent( $noredir );
-
-			if(
-				# check if we're displaying a [[User talk:x.x.x.x]] anonymous talk page
-				( $this->mTitle->getNamespace() == Namespace::getTalk( Namespace::getUser()) ) &&
-				  preg_match('/^\d{1,3}\.\d{1,3}.\d{1,3}\.\d{1,3}$/',$this->mTitle->getText()) &&
-				  $action=='view'
-				)
-				{
+			# check if we're displaying a [[User talk:x.x.x.x]] anonymous talk page
+			if ( $this->mTitle->getNamespace() == NS_USER_TALK &&
+			  preg_match('/^\d{1,3}\.\d{1,3}.\d{1,3}\.\d{1,3}$/',$this->mTitle->getText()) &&
+			  $action=='view'
+			) {
 				wfProfileOut( $fname );
-				return $this->mContent . "\n" .wfMsg('anontalkpagetext'); }
-			else {
+				return $this->mContent . "\n" .wfMsg('anontalkpagetext'); 
+			} else {
 				if($action=='edit') {
 					if($section!='') {
 						if($section=='new') {
@@ -244,15 +245,15 @@ class Article {
 			}
 		}
 	}
-	
+
 	# This function returns the text of a section, specified by a number ($section).
- 	# A section is text under a heading like == Heading == or <h1>Heading</h1>, or 
+ 	# A section is text under a heading like == Heading == or <h1>Heading</h1>, or
 	# the first section before any such heading (section 0).
 	#
 	# If a section contains subsections, these are also returned.
 	#
 	function getSection($text,$section)  {
-		
+
 		# strip NOWIKI etc. to avoid confusion (true-parameter causes HTML
 		# comments to be stripped as well)
 		$striparray=array();
@@ -273,23 +274,23 @@ class Article {
 			$headline=$secs[$section*2-1];
 			preg_match( '/^(=+).*?=+|^<h([1-6]).*?' . '>.*?<\/h[1-6].*?' . '>/mi',$headline,$matches);
 			$hlevel=$matches[1];
-			
+
 			# translate wiki heading into level
 			if(strpos($hlevel,'=')!==false) {
-				$hlevel=strlen($hlevel);			
+				$hlevel=strlen($hlevel);
 			}
-			
+
 			$rv=$headline. $secs[$section*2];
 			$count=$section+1;
-			
+
 			$break=false;
 			while(!empty($secs[$count*2-1]) && !$break) {
-			
+
 				$subheadline=$secs[$count*2-1];
 				preg_match( '/^(=+).*?=+|^<h([1-6]).*?' . '>.*?<\/h[1-6].*?' . '>/mi',$subheadline,$matches);
 				$subhlevel=$matches[1];
 				if(strpos($subhlevel,'=')!==false) {
-					$subhlevel=strlen($subhlevel);						
+					$subhlevel=strlen($subhlevel);
 				}
 				if($subhlevel > $hlevel) {
 					$rv.=$subheadline.$secs[$count*2];
@@ -298,7 +299,7 @@ class Article {
 					$break=true;
 				}
 				$count++;
-						
+
 			}
 		}
 		# reinsert stripped tags
@@ -308,79 +309,88 @@ class Article {
 		return $rv;
 
 	}
-	
 
+	# Return an array of the columns of the "cur"-table
+	function &getCurContentFields() {
+		global $wgArticleCurContentFields;
+		if ( !$wgArticleCurContentFields ) {
+			$wgArticleCurContentFields = array( 'cur_text','cur_timestamp','cur_user', 'cur_user_text',
+			  'cur_comment','cur_counter','cur_restrictions','cur_touched' );
+		}
+		return $wgArticleCurContentFields;
+	}
+
+	# Return an array of the columns of the "old"-table
+	function &getOldContentFields() {
+		global $wgArticleOldContentFields;
+		if ( !$wgArticleOldContentFields ) {
+			$wgArticleOldContentFields = array( 'old_namespace','old_title','old_text','old_timestamp', 
+			  'old_user','old_user_text','old_comment','old_flags' );
+		}
+		return $wgArticleOldContentFields;
+	}
+				
 	# Load the revision (including cur_text) into this object
 	function loadContent( $noredir = false )
 	{
-		global $wgOut, $wgMwRedir, $wgRequest, $wgIsPg;
+		global $wgOut, $wgMwRedir, $wgRequest;
 
+		$dbr =& wfGetDB( DB_SLAVE );
 		# Query variables :P
 		$oldid = $wgRequest->getVal( 'oldid' );
 		$redirect = $wgRequest->getVal( 'redirect' );
 
 		if ( $this->mContentLoaded ) return;
 		$fname = 'Article::loadContent';
-		
-		# Pre-fill content with error message so that if something 	 
+
+		# Pre-fill content with error message so that if something
 		# fails we'll have something telling us what we intended.
 
-		$t = $this->mTitle->getPrefixedText(); 	 
-		if ( isset( $oldid ) ) { 	 
-			$oldid = IntVal( $oldid ); 	 
+		$t = $this->mTitle->getPrefixedText();
+		if ( isset( $oldid ) ) {
+			$oldid = IntVal( $oldid );
 			$t .= ",oldid={$oldid}";
-		} 	 
-		if ( isset( $redirect ) ) { 	 
-			$redirect = ($redirect == 'no') ? 'no' : 'yes'; 	 
-			$t .= ",redirect={$redirect}"; 	 
-		} 	 
+		}
+		if ( isset( $redirect ) ) {
+			$redirect = ($redirect == 'no') ? 'no' : 'yes';
+			$t .= ",redirect={$redirect}";
+		}
 		$this->mContent = wfMsg( 'missingarticle', $t );
-	
+
 		if ( ! $oldid ) {	# Retrieve current version
 			$id = $this->getID();
 			if ( 0 == $id ) return;
 
-			$sql = 'SELECT ' .
-			  'cur_text,cur_timestamp,cur_user,cur_user_text,cur_comment,cur_counter,cur_restrictions,cur_touched ' .
-			  "FROM cur WHERE cur_id={$id}";
-			wfDebug( "$sql\n" );
-			$res = wfQuery( $sql, DB_READ, $fname );
-			if ( 0 == wfNumRows( $res ) ) { 
-				return; 
+			$s = $dbr->getArray( 'cur', $this->getCurContentFields(), array( 'cur_id' => $id ), $fname );
+			if ( $s === false ) { 
+				return;
 			}
 
-			$s = wfFetchObject( $res );
 			# If we got a redirect, follow it (unless we've been told
 			# not to by either the function parameter or the query
-			if ( ( 'no' != $redirect ) && ( false == $noredir ) &&
-			  ( $wgMwRedir->matchStart( $s->cur_text ) ) ) {
-				if ( preg_match( '/\\[\\[([^\\]\\|]+)[\\]\\|]/',
-				  $s->cur_text, $m ) ) {
-					$rt = Title::newFromText( $m[1] );
-					if( $rt ) {
-						# Gotta hand redirects to special pages differently:
-						# Fill the HTTP response "Location" header and ignore
-						# the rest of the page we're on.
-	
-						if ( $rt->getInterwiki() != '' ) {
-							$wgOut->redirect( $rt->getFullURL() ) ;
-							return;
-						}
-						if ( $rt->getNamespace() == Namespace::getSpecial() ) {
-							$wgOut->redirect( $rt->getFullURL() );
-							return;
-						}
-						$rid = $rt->getArticleID();
-						if ( 0 != $rid ) {
-							$sql = 'SELECT cur_text,cur_timestamp,cur_user,cur_user_text,cur_comment,' .
-							  "cur_counter,cur_restrictions,cur_touched FROM cur WHERE cur_id={$rid}";
-							$res = wfQuery( $sql, DB_READ, $fname );
-	
-							if ( 0 != wfNumRows( $res ) ) {
-								$this->mRedirectedFrom = $this->mTitle->getPrefixedText();
-								$this->mTitle = $rt;
-								$s = wfFetchObject( $res );
-							}
+			if ( ( 'no' != $redirect ) && ( false == $noredir ) ) {
+			  	$rt = Title::newFromRedirect( $s->cur_text );
+				if ( $rt ) {
+					# Gotta hand redirects to special pages differently:
+					# Fill the HTTP response "Location" header and ignore
+					# the rest of the page we're on.
+
+					if ( $rt->getInterwiki() != '' ) {
+						$wgOut->redirect( $rt->getFullURL() ) ;
+						return;
+					}
+					if ( $rt->getNamespace() == NS_SPECIAL ) {
+						$wgOut->redirect( $rt->getFullURL() );
+						return;
+					}
+					$rid = $rt->getArticleID();
+					if ( 0 != $rid ) {
+						$redirRow = $dbr->getArray( 'cur', $this->getCurContentFields(), array( 'cur_id' => $rid ), $fname );
+
+						if ( $redirRow !== false ) {
+							$this->mRedirectedFrom = $this->mTitle->getPrefixedText();
+							$this->mTitle = $rt;
+							$s = $redirRow;
 						}
 					}
 				}
@@ -395,18 +405,12 @@ class Article {
 			$this->mTouched = $s->cur_touched;
 			$this->mTitle->mRestrictions = explode( ',', trim( $s->cur_restrictions ) );
 			$this->mTitle->mRestrictionsLoaded = true;
-			wfFreeResult( $res );
 		} else { # oldid set, retrieve historical version
-			$oldtable=$wgIsPg?'"old"':'old';
-			$sql = "SELECT old_namespace,old_title,old_text,old_timestamp,".
-				"old_user,old_user_text,old_comment,old_flags FROM old ".
-			  	"WHERE old_id={$oldid}";
-			$res = wfQuery( $sql, DB_READ, $fname );
-			if ( 0 == wfNumRows( $res ) ) {
+			$s = $dbr->getArray( 'old', $this->getOldContentFields(), array( 'old_id' => $oldid ), $fname );
+			if ( $s === false ) {
 				return;
 			}
 
-			$s = wfFetchObject( $res );
 			if( $this->mTitle->getNamespace() != $s->old_namespace ||
 				$this->mTitle->getDBkey() != $s->old_title ) {
 				$oldTitle = Title::makeTitle( $s->old_namesapce, $s->old_title );
@@ -419,7 +423,6 @@ class Article {
 			$this->mComment = $s->old_comment;
 			$this->mCounter = 0;
 			$this->mTimestamp = $s->old_timestamp;
-			wfFreeResult( $res );
 		}
 		$this->mContentLoaded = true;
 		return $this->mContent;
@@ -428,48 +431,40 @@ class Article {
 	# Gets the article text without using so many damn globals
 	# Returns false on error
 	function getContentWithoutUsingSoManyDamnGlobals( $oldid = 0, $noredir = false ) {
-		global $wgMwRedir, $wgIsPg;
+		global $wgMwRedir;
 
 		if ( $this->mContentLoaded ) {
 			return $this->mContent;
 		}
 		$this->mContent = false;
-		
-		$fname = 'Article::loadContent';
-		
+
+		$fname = 'Article::getContentWithout';
+		$dbr =& wfGetDB( DB_SLAVE );
+
 		if ( ! $oldid ) {	# Retrieve current version
 			$id = $this->getID();
 			if ( 0 == $id ) {
 				return false;
 			}
 
-			$sql = 'SELECT ' .
-			  'cur_text,cur_timestamp,cur_user,cur_counter,cur_restrictions,cur_touched ' .
-			  "FROM cur WHERE cur_id={$id}";
-			$res = wfQuery( $sql, DB_READ, $fname );
-			if ( 0 == wfNumRows( $res ) ) { 
-				return false; 
+			$s = $dbr->getArray( 'cur', $this->getCurContentFields(), array( 'cur_id' => $id ), $fname );
+			if ( $s === false ) { 
+				return false;
 			}
 
-			$s = wfFetchObject( $res );
 			# If we got a redirect, follow it (unless we've been told
 			# not to by either the function parameter or the query
-			if ( !$noredir && $wgMwRedir->matchStart( $s->cur_text ) ) {
-				if ( preg_match( '/\\[\\[([^\\]\\|]+)[\\]\\|]/',
-				  $s->cur_text, $m ) ) {
-					$rt = Title::newFromText( $m[1] );
-					if( $rt &&  $rt->getInterwiki() == '' && $rt->getNamespace() != Namespace::getSpecial() ) {
-						$rid = $rt->getArticleID();
-						if ( 0 != $rid ) {
-							$sql = 'SELECT cur_text,cur_timestamp,cur_user,' .
-							  "cur_counter,cur_restrictions,cur_touched FROM cur WHERE cur_id={$rid}";
-							$res = wfQuery( $sql, DB_READ, $fname );
-	
-							if ( 0 != wfNumRows( $res ) ) {
-								$this->mRedirectedFrom = $this->mTitle->getPrefixedText();
-								$this->mTitle = $rt;
-								$s = wfFetchObject( $res );
-							}
+			if ( !$noredir ) {
+				$rt = Title::newFromRedirect( $s->cur_text );
+				if( $rt &&  $rt->getInterwiki() == '' && $rt->getNamespace() != NS_SPECIAL ) {
+					$rid = $rt->getArticleID();
+					if ( 0 != $rid ) {
+						$redirRow = $dbr->getArray( 'cur', $this->getCurContentFields(), array( 'cur_id' => $rid ), $fname );
+
+						if ( $redirRow !== false ) {
+							$this->mRedirectedFrom = $this->mTitle->getPrefixedText();
+							$this->mTitle = $rt;
+							$s = $redirRow;
 						}
 					}
 				}
@@ -477,27 +472,24 @@ class Article {
 
 			$this->mContent = $s->cur_text;
 			$this->mUser = $s->cur_user;
+			$this->mUserText = $s->cur_user_text;
+			$this->mComment = $s->cur_comment;
 			$this->mCounter = $s->cur_counter;
 			$this->mTimestamp = $s->cur_timestamp;
 			$this->mTouched = $s->cur_touched;
 			$this->mTitle->mRestrictions = explode( ",", trim( $s->cur_restrictions ) );
 			$this->mTitle->mRestrictionsLoaded = true;
-			wfFreeResult( $res );
 		} else { # oldid set, retrieve historical version
-			$oldtable=$wgIsPg?'"old"':'old';
-			$sql = "SELECT old_text,old_timestamp,old_user,old_flags FROM $oldtable " .
-			  "WHERE old_id={$oldid}";
-			$res = wfQuery( $sql, DB_READ, $fname );
-			if ( 0 == wfNumRows( $res ) ) { 
-				return false; 
+			$s = $dbr->getArray( 'old', $this->getOldContentFields(), array( 'old_id' => $oldid ) );
+			if ( $s === false ) { 
+				return false;
 			}
-
-			$s = wfFetchObject( $res );
 			$this->mContent = Article::getRevisionText( $s );
 			$this->mUser = $s->old_user;
+			$this->mUserText = $s->old_user_text;
+			$this->mComment = $s->old_comment;
 			$this->mCounter = 0;
 			$this->mTimestamp = $s->old_timestamp;
-			wfFreeResult( $res );
 		}
 		$this->mContentLoaded = true;
 		return $this->mContent;
@@ -515,7 +507,8 @@ class Article {
 	{
 		if ( -1 == $this->mCounter ) {
 			$id = $this->getID();
-			$this->mCounter = wfGetSQL( 'cur', 'cur_counter', "cur_id={$id}" );
+			$dbr =& wfGetDB( DB_SLAVE );
+			$this->mCounter = $dbr->getField( 'cur', 'cur_counter', "cur_id={$id}" );
 		}
 		return $this->mCounter;
 	}
@@ -526,7 +519,7 @@ class Article {
 	function isCountable( $text )
 	{
 		global $wgUseCommaCount, $wgMwRedir;
-		
+
 		if ( 0 != $this->mTitle->getNamespace() ) { return 0; }
 		if ( $wgMwRedir->matchStart( $text ) ) { return 0; }
 		$token = ($wgUseCommaCount ? ',' : '[[' );
@@ -541,14 +534,15 @@ class Article {
 	{
 		global $wgOut;
 		if ( -1 != $this->mUser ) return;
+		
+		$fname = 'Article::loadLastEdit';
 
-		$sql = 'SELECT cur_user,cur_user_text,cur_timestamp,' .
-		  'cur_comment,cur_minor_edit FROM cur WHERE ' .
-		  'cur_id=' . $this->getID();
-		$res = wfQuery( $sql, DB_READ, 'Article::loadLastEdit' );
+		$dbr =& wfGetDB( DB_SLAVE );
+		$s = $dbr->getArray( 'cur', 
+		  array( 'cur_user','cur_user_text','cur_timestamp', 'cur_comment','cur_minor_edit' ),
+		  array( 'cur_id' => $this->getID() ), $fname );
 
-		if ( wfNumRows( $res ) > 0 ) {
-			$s = wfFetchObject( $res );
+		if ( $s !== false ) {
 			$this->mUser = $s->cur_user;
 			$this->mUserText = $s->cur_user_text;
 			$this->mTimestamp = $s->cur_timestamp;
@@ -592,56 +586,47 @@ class Article {
                 $fname = 'Article::getContributors';
 
 	        # XXX: this is expensive; cache this info somewhere.
-		
-	        $title = $this->mTitle;
 
+	        $title = $this->mTitle;
 	        $contribs = array();
-
-                $sql = 'SELECT old.old_user, old.old_user_text, ' .
-                       '  user.user_real_name, MAX(old.old_timestamp) as timestamp' .
-                       ' FROM old, user ' .
-                       ' WHERE old.old_user = user.user_id ' .
-		       ' AND old.old_namespace = ' . $title->getNamespace() .
-                       ' AND old.old_title = "' . $title->getDBkey() . '"' .
-                       ' AND old.old_user != 0 ' .
-                       ' AND old.old_user != ' . $this->getUser() . 
-                       ' GROUP BY old.old_user ' . 
-                       ' ORDER BY timestamp DESC ';
+		$dbr =& wfGetDB( DB_SLAVE );
+		$oldTable = $dbr->tableName( 'old' );
+		$userTable = $dbr->tableName( 'user' );
+		$encDBkey = $dbr->strencode( $title->getDBkey() );
+		$ns = $title->getNamespace();
+		$user = $this->getUser();
+
+		$sql = "SELECT old_user, old_user_text, user_real_name, MAX(old_timestamp) as timestamp
+			FROM $oldTable LEFT JOIN $userTable ON old_user = user_id 
+			WHERE old_namespace = $user
+			AND old_title = $encDBkey
+			AND old_user != $user
+			GROUP BY old_user 
+			ORDER BY timestamp DESC";
 
                 if ($limit > 0) {
                         $sql .= ' LIMIT '.$limit;
                 }
 
-	        $res = wfQuery($sql, DB_READ, $fname);
-	
-        	while ( $line = wfFetchObject( $res ) ) {
-	 	        $contribs[$line->old_user] = 
-                                array($line->old_user_text, $line->user_real_name);
-  	        }    
-
-                # Count anonymous users
-
-        	$res = wfQuery('SELECT COUNT(*) AS cnt ' .
-  	                       ' FROM old ' .
-	                       ' WHERE old_namespace = ' . $title->getNamespace() .
-	                       " AND old_title = '" . $title->getDBkey() . "'" .
-                               ' AND old_user = 0 ', DB_READ, $fname);
-	
-   	        while ( $line = wfFetchObject( $res ) ) {
-                        $contribs[0] = array($line->cnt, 'Anonymous');
-	        }    
+		$res = $dbr->query($sql, $fname);
+
+		while ( $line = $dbr->fetchObject( $res ) ) {
+	 	        $contribs[] = array($line->old_user, $line->old_user_text, $line->user_real_name);
+  	        }
+
+		$dbr->freeResult($res);
 
 	        return $contribs;
 	}
-    
+
 	# This is the default action of the script: just view the page of
 	# the given title.
 
 	function view()
 	{
-		global $wgUser, $wgOut, $wgLang, $wgRequest;
-		global $wgLinkCache, $IP, $wgEnableParserCache;
-		
+		global $wgUser, $wgOut, $wgLang, $wgRequest, $wgMwRedir;
+		global $wgLinkCache, $IP, $wgEnableParserCache, $wgStylePath;
+
 		$fname = 'Article::view';
 		wfProfileIn( $fname );
 
@@ -660,10 +645,14 @@ class Article {
 			$de = new DifferenceEngine( intval($oldid), intval($diff) );
 			$de->showDiffPage();
 			wfProfileOut( $fname );
+			if( $diff == 0 ) {
+				# Run view updates for current revision only
+				$this->viewUpdates();
+			}
 			return;
 		}
 
-		if ( !is_null( $oldid ) and $this->checkTouched() ) {
+		if ( empty( $oldid ) && $this->checkTouched() ) {
 			if( $wgOut->checkLastModified( $this->mTouched ) ){
 				return;
 			} else if ( $this->tryFileCache() ) {
@@ -673,14 +662,14 @@ class Article {
 				return;
 			}
 		}
-		
+
 		# Should the parser cache be used?
 		if ( $wgEnableParserCache && intval($wgUser->getOption( 'stubthreshold' )) == 0 && empty( $oldid ) ) {
 			$pcache = true;
 		} else {
 			$pcache = false;
 		}
-		
+
 		$outputDone = false;
 		if ( $pcache ) {
 			if ( $wgOut->tryParserCache( $this, $wgUser ) ) {
@@ -690,14 +679,14 @@ class Article {
 
 		if ( !$outputDone ) {
 			$text = $this->getContent( false ); # May change mTitle by following a redirect
-			
+
 			# Another whitelist check in case oldid or redirects are altering the title
 			if ( !$this->mTitle->userCanRead() ) {
 				$wgOut->loginToUse();
 				$wgOut->output();
 				exit;
 			}
-			
+
 
 			# We're looking at an old revision
 
@@ -711,29 +700,38 @@ class Article {
 				  'redirect=no' );
 				$s = wfMsg( 'redirectedfrom', $redir );
 				$wgOut->setSubtitle( $s );
-			
-				# Can't cache redirects				
+
+				# Can't cache redirects
 				$pcache = false;
 			}
 
-			$wgLinkCache->preFill( $this->mTitle );
-
 			# wrap user css and user js in pre and don't parse
 			# XXX: use $this->mTitle->usCssJsSubpage() when php is fixed/ a workaround is found
-			if ( 
-				$this->mTitle->getNamespace() == Namespace::getUser() && 
+			if (
+				$this->mTitle->getNamespace() == NS_USER &&
 				preg_match('/\\/[\\w]+\\.(css|js)$/', $this->mTitle->getDBkey())
 			) {
 				$wgOut->addWikiText( wfMsg('clearyourcache'));
 				$wgOut->addHTML( '<pre>'.htmlspecialchars($this->mContent)."\n</pre>" );
+			} else if ( $rt = Title::newFromRedirect( $text ) ) {
+				# Display redirect
+				$sk = $wgUser->getSkin();
+				$imageUrl = "$wgStylePath/images/redirect.png";
+				$targetUrl = $rt->escapeLocalURL();
+				$titleText = htmlspecialchars( $rt->getPrefixedText() );
+				$link = $sk->makeLinkObj( $rt );
+				$wgOut->addHTML( "<img valign=\"center\" src=\"$imageUrl\">" .
+				  "<span class=\"redirectText\">$link</span>" );
 			} else if ( $pcache ) {
+				# Display content and save to parser cache
 				$wgOut->addWikiText( $text, true, $this );
 			} else {
+				# Display content, don't attempt to save to parser cache
 				$wgOut->addWikiText( $text );
 			}
 		}
 		$wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
-		
+
 		# Add link titles as META keywords
 		$wgOut->addMetaTags() ;
 
@@ -748,9 +746,9 @@ class Article {
 
 	/* private */ function insertNewArticle( $text, $summary, $isminor, $watchthis )
 	{
-		global $wgOut, $wgUser, $wgLinkCache, $wgMwRedir;
-		global $wgUseSquid, $wgDeferredUpdateList, $wgInternalServer, $wgIsPg, $wgIsMySQL;
-		
+		global $wgOut, $wgUser, $wgMwRedir;
+		global $wgUseSquid, $wgDeferredUpdateList, $wgInternalServer;
+
 		$fname = 'Article::insertNewArticle';
 
 		$this->mCountAdjustment = $this->isCountable( $text );
@@ -765,48 +763,49 @@ class Article {
 		$won = wfInvertTimestamp( $now );
 		wfSeedRandom();
 		$rand = number_format( mt_rand() / mt_getrandmax(), 12, '.', '' );
-		
-		if ($wgIsPg) {
-			$cur_id_column="cur_id,";
-			$cur_id=wfGetSQL(""," nextval('cur_cur_id_seq')");
-			$cur_id_value="{$cur_id},";
-		} else {
-			$cur_id_column="";
-			$cur_id="";
-			$cur_id_value="";
-		}
+		$dbw =& wfGetDB( DB_MASTER );
+
+		$cur_id = $dbw->nextSequenceValue( 'cur_cur_id_seq' ); 
 
 		$isminor = ( $isminor && $wgUser->getID() ) ? 1 : 0;
-		$sql = "INSERT INTO cur ({$cur_id_column}cur_namespace,cur_title,cur_text," .
-		  'cur_comment,cur_user,cur_timestamp,cur_minor_edit,cur_counter,' .
-		  'cur_restrictions,cur_user_text,cur_is_redirect,' .
-		  "cur_is_new,cur_random,cur_touched,inverse_timestamp) VALUES ({$cur_id_value}{$ns},'" . wfStrencode( $ttl ) . "', '" .
-		  wfStrencode( $text ) . "', '" .
-		  wfStrencode( $summary ) . "', '" .
-		  $wgUser->getID() . "', '{$now}', " .
-		  $isminor . ", 0, '', '" .
-		  wfStrencode( $wgUser->getName() ) . "', $redir, 1, $rand, '{$now}', '{$won}')";
-		$res = wfQuery( $sql, DB_WRITE, $fname );
-
-		$newid = $wgIsPg?$cur_id:wfInsertId();
+
+		$dbw->insertArray( 'cur', array(
+			'cur_id' => $cur_id,
+			'cur_namespace' => $ns,
+			'cur_title' => $ttl,
+			'cur_text' => $text,
+			'cur_comment' => $summary,
+			'cur_user' => $wgUser->getID(),
+			'cur_timestamp' => $now,
+			'cur_minor_edit' => $isminor,
+			'cur_counter' => 0,
+			'cur_restrictions' => '',
+			'cur_user_text' => $wgUser->getName(),
+			'cur_is_redirect' => $redir,
+			'cur_is_new' => 1,
+			'cur_random' => $rand,
+			'cur_touched' => $now,
+			'inverse_timestamp' => $won,
+		), $fname );
+
+		$newid = $dbw->insertId();
 		$this->mTitle->resetArticleID( $newid );
 
 		Article::onArticleCreate( $this->mTitle );
 		RecentChange::notifyNew( $now, $this->mTitle, $isminor, $wgUser, $summary );
-		
-		if ($watchthis) { 		
-			if(!$this->mTitle->userIsWatching()) $this->watch(); 
+
+		if ($watchthis) {
+			if(!$this->mTitle->userIsWatching()) $this->watch();
 		} else {
 			if ( $this->mTitle->userIsWatching() ) {
 				$this->unwatch();
 			}
 		}
-		
+
 		# The talk page isn't in the regular link tables, so we need to update manually:
 		$talkns = $ns ^ 1; # talk -> normal; normal -> talk
-		$sql = "UPDATE cur set cur_touched='$now' WHERE cur_namespace=$talkns AND cur_title='" . wfStrencode( $ttl ) . "'";
-		wfQuery( $sql, DB_WRITE );
-		
+		$dbw->updateArray( 'cur', array( 'cur_touched' => $now ), array( 'cur_namespace' => $talkns, 'cur_title' => $ttl ), $fname );
+
 		# standard deferred updates
 		$this->editUpdates( $text );
 
@@ -817,7 +816,7 @@ class Article {
 	/* Side effects: loads last edit */
 	function getTextOfLastEditWithSectionReplacedOrAdded($section, $text, $summary = ''){
 		$this->loadLastEdit();
-		$oldtext = $this->getContent( true );		
+		$oldtext = $this->getContent( true );
 		if ($section != '') {
 			if($section=='new') {
 				if($summary) $subject="== {$summary} ==\n\n";
@@ -838,10 +837,10 @@ class Article {
 				$secs=preg_split('/(^=+.*?=+|^<h[1-6].*?' . '>.*?<\/h[1-6].*?' . '>)/mi',
 				  $oldtext,-1,PREG_SPLIT_DELIM_CAPTURE);
 				$secs[$section*2]=$text."\n\n"; // replace with edited
-				
+
 				# section 0 is top (intro) section
-				if($section!=0) { 
-					
+				if($section!=0) {
+
 					# headline of old section - we need to go through this section
 					# to determine if there are any subsections that now need to
 					# be erased, as the mother section has been replaced with
@@ -849,23 +848,23 @@ class Article {
 					$headline=$secs[$section*2-1];
 					preg_match( '/^(=+).*?=+|^<h([1-6]).*?' . '>.*?<\/h[1-6].*?' . '>/mi',$headline,$matches);
 					$hlevel=$matches[1];
-					
+
 					# determine headline level for wikimarkup headings
 					if(strpos($hlevel,'=')!==false) {
-						$hlevel=strlen($hlevel);			
+						$hlevel=strlen($hlevel);
 					}
-					
+
 					$secs[$section*2-1]=''; // erase old headline
 					$count=$section+1;
 					$break=false;
 					while(!empty($secs[$count*2-1]) && !$break) {
-			
+
 						$subheadline=$secs[$count*2-1];
 						preg_match(
 						 '/^(=+).*?=+|^<h([1-6]).*?' . '>.*?<\/h[1-6].*?' . '>/mi',$subheadline,$matches);
 						$subhlevel=$matches[1];
 						if(strpos($subhlevel,'=')!==false) {
-							$subhlevel=strlen($subhlevel);		
+							$subhlevel=strlen($subhlevel);
 						}
 						if($subhlevel > $hlevel) {
 							// erase old subsections
@@ -876,30 +875,31 @@ class Article {
 							$break=true;
 						}
 						$count++;
-						
+
 					}
-					
+
 				}
 				$text=join('',$secs);
 				# reinsert the stuff that we stripped out earlier
-				$text=$parser->unstrip($text,$striparray);	
-				$text=$parser->unstripNoWiki($text,$striparray);	
+				$text=$parser->unstrip($text,$striparray);
+				$text=$parser->unstripNoWiki($text,$striparray);
 			}
-								
+
 		}
 		return $text;
 	}
 
 	function updateArticle( $text, $summary, $minor, $watchthis, $forceBot = false, $sectionanchor = '' )
 	{
-		global $wgOut, $wgUser, $wgLinkCache;
+		global $wgOut, $wgUser;
 		global $wgDBtransactions, $wgMwRedir;
 		global $wgUseSquid, $wgInternalServer;
-		global $wgIsPg;
+		
 		$fname = 'Article::updateArticle';
-
+		$good = true;
+		
 		if ( $this->mMinorEdit ) { $me1 = 1; } else { $me1 = 0; }
-		if ( $minor && $wgUser->getID() ) { $me2 = 1; } else { $me2 = 0; }		
+		if ( $minor && $wgUser->getID() ) { $me2 = 1; } else { $me2 = 0; }
 		if ( preg_match( "/^((" . $wgMwRedir->getBaseRegex() . ')[^\\n]+)/i', $text, $m ) ) {
 			$redir = 1;
 			$text = $m[1] . "\n"; # Remove all content but redirect
@@ -907,80 +907,89 @@ class Article {
 		else { $redir = 0; }
 
 		$text = $this->preSaveTransform( $text );
-		
+		$dbw =& wfGetDB( DB_MASTER );
+
 		# Update article, but only if changed.
 
+		# It's important that we either rollback or complete, otherwise an attacker could 
+		# overwrite cur entries by sending precisely timed user aborts. Random bored users 
+		# could conceivably have the same effect, especially if cur is locked for long periods.
 		if( $wgDBtransactions ) {
-			$sql = 'BEGIN';
-			wfQuery( $sql, DB_WRITE );
+			$dbw->query( 'BEGIN', $fname );
+		} else {
+			$userAbort = ignore_user_abort( true );
 		}
+		
 		$oldtext = $this->getContent( true );
 
 		if ( 0 != strcmp( $text, $oldtext ) ) {
 			$this->mCountAdjustment = $this->isCountable( $text )
 			  - $this->isCountable( $oldtext );
-
 			$now = wfTimestampNow();
 			$won = wfInvertTimestamp( $now );
-			$sql = "UPDATE cur SET cur_text='" . wfStrencode( $text ) .
-			  "',cur_comment='" .  wfStrencode( $summary ) .
-			  "',cur_minor_edit={$me2}, cur_user=" . $wgUser->getID() .
-			  ",cur_timestamp='{$now}',cur_user_text='" .
-			  wfStrencode( $wgUser->getName() ) .
-			  "',cur_is_redirect={$redir}, cur_is_new=0, cur_touched='{$now}', inverse_timestamp='{$won}' " .
-			  "WHERE cur_id=" . $this->getID() .
-			  " AND cur_timestamp='" . $this->getTimestamp() . "'";
-			$res = wfQuery( $sql, DB_WRITE, $fname );
-			
-			if( wfAffectedRows() == 0 ) {
-				/* Belated edit conflict! Run away!! */
-				return false;
-			}
 
-			# This overwrites $oldtext if revision compression is on
-			$flags = Article::compressRevisionText( $oldtext );
+			# First update the cur row
+			$dbw->updateArray( 'cur', 
+				array( /* SET */ 
+					'cur_text' => $text,
+					'cur_comment' => $summary,
+					'cur_minor_edit' => $me2, 
+					'cur_user' => $wgUser->getID(),
+					'cur_timestamp' => $now,
+					'cur_user_text' => $wgUser->getName(),
+					'cur_is_redirect' => $redir, 
+					'cur_is_new' => 0,
+					'cur_touched' => $now, 
+					'inverse_timestamp' => $won
+				), array( /* WHERE */
+					'cur_id' => $this->getID(), 
+					'cur_timestamp' => $this->getTimestamp() 
+				), $fname 
+			);
 			
-			$oldtable=$wgIsPg?'"old"':'old';
-			if ($wgIsPg) {
-				$oldtable='"old"';
-				$old_id_column='old_id,';
-				$old_id=wfGetSQL(""," nextval('old_old_id_seq')");
-				$old_id_value=$old_id.',';
+			if( $dbw->affectedRows() == 0 ) {
+				/* Belated edit conflict! Run away!! */
+				$good = false;
 			} else {
-				$oldtable='old';
-				$old_id_column='';
-				$old_id_value='';
-			}
+				# Now insert the previous revision into old
 
-			$sql = "INSERT INTO $oldtable ({$old_id_column}old_namespace,old_title,old_text," .
-			  'old_comment,old_user,old_user_text,old_timestamp,' .
-			  'old_minor_edit,inverse_timestamp,old_flags) VALUES (' .
-			  $old_id_value.
-			  $this->mTitle->getNamespace() . ", '" .
-			  wfStrencode( $this->mTitle->getDBkey() ) . "', '" .
-			  wfStrencode( $oldtext ) . "', '" .
-			  wfStrencode( $this->getComment() ) . "', " .
-			  $this->getUser() . ", '" .
-			  wfStrencode( $this->getUserText() ) . "', '" .
-			  $this->getTimestamp() . "', " . $me1 . ", '" .
-			  wfInvertTimestamp( $this->getTimestamp() ) . "','$flags')";
-			$res = wfQuery( $sql, DB_WRITE, $fname );
-
-			$oldid = $wgIsPg?$old_id:wfInsertId( $res );
+				# This overwrites $oldtext if revision compression is on
+				$flags = Article::compressRevisionText( $oldtext );
+				
+				$dbw->insertArray( 'old', 
+					array(
+						'old_id' => $dbw->nextSequenceValue( 'old_old_id_seq' ),
+						'old_namespace' => $this->mTitle->getNamespace(),
+						'old_title' => $this->mTitle->getDBkey(),
+						'old_text' => $oldtext,
+						'old_comment' => $this->getComment(),
+						'old_user' => $this->getUser(),
+						'old_user_text' => $this->getUserText(),
+						'old_timestamp' => $this->getTimestamp(),
+						'old_minor_edit' => $me1,
+						'inverse_timestamp' => wfInvertTimestamp( $this->getTimestamp() ),
+						'old_flags' => $flags,
+					), $fname 
+				);
+				
+				$oldid = $dbw->insertId();
 
-			$bot = (int)($wgUser->isBot() || $forceBot);
-			RecentChange::notifyEdit( $now, $this->mTitle, $me2, $wgUser, $summary, 
-				$oldid, $this->getTimestamp(), $bot );
-			Article::onArticleEdit( $this->mTitle );
+				$bot = (int)($wgUser->isBot() || $forceBot);
+				RecentChange::notifyEdit( $now, $this->mTitle, $me2, $wgUser, $summary, 
+					$oldid, $this->getTimestamp(), $bot );
+				Article::onArticleEdit( $this->mTitle );
+			}
 		}
 
 		if( $wgDBtransactions ) {
-			$sql = 'COMMIT';
-			wfQuery( $sql, DB_WRITE );
+			$dbw->query( 'COMMIT', $fname );
+		} else {
+			ignore_user_abort( $userAbort );
 		}
-		
-		if ($watchthis) { 
-			if (!$this->mTitle->userIsWatching()) $this->watch();			
+
+		if ( $good ) {
+		if ($watchthis) {
+			if (!$this->mTitle->userIsWatching()) $this->watch();
 		} else {
 			if ( $this->mTitle->userIsWatching() ) {
 				$this->unwatch();
@@ -988,8 +997,8 @@ class Article {
 		}
 		# standard deferred updates
 		$this->editUpdates( $text );
-		
-		
+
+
 		$urls = array();
 		# Template namespace
 		# Purge all articles linking here
@@ -997,12 +1006,12 @@ class Article {
 			$titles = $this->mTitle->getLinksTo();
 			Title::touchArray( $titles );
 			if ( $wgUseSquid ) {
-				foreach ( $titles as $title ) {
-					$urls[] = $title->getInternalURL();
-				}
+					foreach ( $titles as $title ) {
+						$urls[] = $title->getInternalURL();
+					}
 			}
 		}
-	
+
 		# Squid updates
 		if ( $wgUseSquid ) {
 			$urls = array_merge( $urls, $this->mTitle->getSquidURLs() );
@@ -1011,7 +1020,8 @@ class Article {
 		}
 
 		$this->showArticle( $text, wfMsg( 'updated' ), $sectionanchor );
-		return true;
+		}
+		return $good;
 	}
 
 	# After we've either updated or inserted the article, update
@@ -1023,12 +1033,18 @@ class Article {
 		global $wgMwRedir;
 
 		$wgLinkCache = new LinkCache();
-
+		# Select for update
+		$wgLinkCache->forUpdate( true );
+		
 		# Get old version of link table to allow incremental link updates
 		$wgLinkCache->preFill( $this->mTitle );
 		$wgLinkCache->clear();
-
-		# Now update the link cache by parsing the text	
+		
+		# Switch on use of link cache in the skin
+		$sk =& $wgUser->getSkin();
+		$sk->postParseLinkColour( false );
+		
+		# Now update the link cache by parsing the text
 		$wgOut = new OutputPage();
 		$wgOut->addWikiText( $text );
 
@@ -1039,6 +1055,22 @@ class Article {
 		$wgOut->redirect( $this->mTitle->getFullURL( $r ).$sectionanchor );
 	}
 
+	# Validate article
+	
+	function validate ()
+	{
+		global $wgOut ;
+		$wgOut->setPagetitle( wfMsg( 'validate' ) . " : " . $this->mTitle->getPrefixedText()  );
+		$wgOut->setRobotpolicy( 'noindex,follow' );
+		if ( $this->mTitle->getNamespace() != 0 )
+			{
+			$wgOut->addHTML ( wfMsg ( 'val_validate_article_namespace_only' ) ) ;
+			return ;
+			}
+		$v = new Validation ;
+		$v->validate_form ( $this->mTitle->getDBkey() ) ;		
+	}
+
 	# Add this page to my watchlist
 
 	function watch( $add = true )
@@ -1074,7 +1106,7 @@ class Article {
 		$up = new UserUpdate();
 		array_push( $wgDeferredUpdateList, $up );
 
-		$wgOut->returnToMain( false );
+		$wgOut->returnToMain( true, $this->mTitle->getPrefixedText() );
 	}
 
 	function unwatch()
@@ -1104,18 +1136,23 @@ class Article {
 		$reason = $wgRequest->getText( 'wpReasonProtect' );
 
 		if ( $confirm ) {
+			$dbw =& wfGetDB( DB_MASTER );
+			$dbw->updateArray( 'cur', 
+				array( /* SET */
+					'cur_touched' => wfTimestampNow(),
+					'cur_restrictions' => (string)$limit
+				), array( /* WHERE */
+					'cur_id' => $id 
+				), 'Article::protect' 
+			);
 
-        $sql = "UPDATE cur SET cur_touched='" . wfTimestampNow() . "'," .
-			"cur_restrictions='{$limit}' WHERE cur_id={$id}";
-		wfQuery( $sql, DB_WRITE, 'Article::protect' );
-
-		$log = new LogPage( wfMsg( 'protectlogpage' ), wfMsg( 'protectlogtext' ) );
-		if ( $limit === "" ) {
-				$log->addEntry( wfMsg( 'unprotectedarticle', $this->mTitle->getPrefixedText() ), $reason );
-		} else {
-				$log->addEntry( wfMsg( 'protectedarticle', $this->mTitle->getPrefixedText() ), $reason );
-		}
-		$wgOut->redirect( $this->mTitle->getFullURL() );
+			$log = new LogPage( wfMsg( 'protectlogpage' ), wfMsg( 'protectlogtext' ) );
+			if ( $limit === "" ) {
+					$log->addEntry( wfMsg( 'unprotectedarticle', $this->mTitle->getPrefixedText() ), $reason );
+			} else {
+					$log->addEntry( wfMsg( 'protectedarticle', $this->mTitle->getPrefixedText() ), $reason );
+			}
+			$wgOut->redirect( $this->mTitle->getFullURL() );
 			return;
 		} else {
 			$reason = htmlspecialchars( wfMsg( 'protectreason' ) );
@@ -1137,12 +1174,14 @@ class Article {
 		$protcom = '';
 
 		if ( $limit === '' ) {
+			$wgOut->setPageTitle( wfMsg( 'confirmunprotect' ) );
 			$wgOut->setSubtitle( wfMsg( 'unprotectsub', $sub ) );
 			$wgOut->addWikiText( wfMsg( 'confirmunprotecttext' ) );
 			$check = htmlspecialchars( wfMsg( 'confirmunprotect' ) );
 			$protcom = htmlspecialchars( wfMsg( 'unprotectcomment' ) );
 			$formaction = $this->mTitle->escapeLocalURL( 'action=unprotect' . $par );
 		} else {
+			$wgOut->setPageTitle( wfMsg( 'confirmprotect' ) );
 			$wgOut->setSubtitle( wfMsg( 'protectsub', $sub ) );
 			$wgOut->addWikiText( wfMsg( 'confirmprotecttext' ) );
 			$check = htmlspecialchars( wfMsg( 'confirmprotect' ) );
@@ -1191,16 +1230,16 @@ class Article {
 		return $this->protect( '' );
 	}
 
-	# UI entry point for page deletion 
+	# UI entry point for page deletion
 	function delete()
 	{
-		global $wgUser, $wgOut, $wgMessageCache, $wgRequest, $wgIsPg;
+		global $wgUser, $wgOut, $wgMessageCache, $wgRequest;
 		$fname = 'Article::delete';
 		$confirm = $wgRequest->getBool( 'wpConfirm' ) && $wgRequest->wasPosted();
 		$reason = $wgRequest->getText( 'wpReason' );
-		
+
 		# This code desperately needs to be totally rewritten
-		
+
 		# Check permissions
 		if ( ( ! $wgUser->isSysop() ) ) {
 			$wgOut->sysopRequired();
@@ -1227,22 +1266,33 @@ class Article {
 		# determine whether this page has earlier revisions
 		# and insert a warning if it does
 		# we select the text because it might be useful below
+		$dbr =& wfGetDB( DB_SLAVE );
 		$ns = $this->mTitle->getNamespace();
 		$title = $this->mTitle->getDBkey();
-		$etitle = wfStrencode( $title );
-		$oldtable=$wgIsPg?'"old"':'old';
-		$sql = "SELECT old_text,old_flags FROM $oldtable WHERE old_namespace=$ns and old_title='$etitle' ORDER BY inverse_timestamp LIMIT 1";
-		$res = wfQuery( $sql, DB_READ, $fname );
-		if( ($old=wfFetchObject($res)) && !$confirm ) {
+		$old = $dbr->getArray( 'old', 
+			array( 'old_text', 'old_flags' ), 
+			array(
+				'old_namespace' => $ns,
+				'old_title' => $title,
+			), $fname, array( 'ORDER BY' => 'inverse_timestamp' ) 
+		);
+		
+		if( $old !== false && !$confirm ) {
 			$skin=$wgUser->getSkin();
 			$wgOut->addHTML('<b>'.wfMsg('historywarning'));
 			$wgOut->addHTML( $skin->historyLink() .'</b>');
 		}
-
-		$sql="SELECT cur_text FROM cur WHERE cur_namespace=$ns and cur_title='$etitle'";
-		$res=wfQuery($sql, DB_READ, $fname);
-		if( ($s=wfFetchObject($res))) {
-
+		
+		# Fetch cur_text
+		$s = $dbr->getArray( 'cur', 
+			array( 'cur_text' ), 
+			array( 
+				'cur_namespace' => $ns, 
+				'cur_title' => $title,
+			), $fname
+		);
+		
+		if( $s !== false ) {
 			# if this is a mini-text, we can paste part of it into the deletion reason
 
 			#if this is empty, an earlier revision may contain "useful" text
@@ -1254,19 +1304,19 @@ class Article {
 					$text = Article::getRevisionText( $old );
 					$blanked = true;
 				}
-				
+
 			}
-			
-			$length=strlen($text);				
-			
+
+			$length=strlen($text);
+
 			# this should not happen, since it is not possible to store an empty, new
 			# page. Let's insert a standard text in case it does, though
-			if($length == 0 && $reason === '') { 
+			if($length == 0 && $reason === '') {
 				$reason = wfMsg('exblank');
 			}
-			
+
 			if($length < 500 && $reason === '') {
-									
+
 				# comment field=255, let's grep the first 150 to have some user
 				# space left
 				$text=substr($text,0,150);
@@ -1281,27 +1331,27 @@ class Article {
 					$reason=wfMsg('exbeforeblank') . " '".$text;
 				}
 				if($length>150) { $reason .= '...'; } # we've only pasted part of the text
-				$reason.="'"; 
+				$reason.="'";
 			}
 		}
 
 		return $this->confirmDelete( '', $reason );
 	}
-	
+
 	# Output deletion confirmation dialog
 	function confirmDelete( $par, $reason )
 	{
 		global $wgOut;
 
 		wfDebug( "Article::confirmDelete\n" );
-		
+
 		$sub = htmlspecialchars( $this->mTitle->getPrefixedText() );
 		$wgOut->setSubtitle( wfMsg( 'deletesub', $sub ) );
 		$wgOut->setRobotpolicy( 'noindex,nofollow' );
 		$wgOut->addWikiText( wfMsg( 'confirmdeletetext' ) );
 
 		$formaction = $this->mTitle->escapeLocalURL( 'action=delete' . $par );
-		
+
 		$confirm = htmlspecialchars( wfMsg( 'confirm' ) );
 		$check = htmlspecialchars( wfMsg( 'confirmcheck' ) );
 		$delcom = htmlspecialchars( wfMsg( 'deletecomment' ) );
@@ -1347,15 +1397,14 @@ class Article {
 		$fname = 'Article::doDelete';
 		wfDebug( "$fname\n" );
 
-		if ( $this->doDeleteArticle( $reason ) ) {	
+		if ( $this->doDeleteArticle( $reason ) ) {
 			$deleted = $this->mTitle->getPrefixedText();
 
 			$wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 			$wgOut->setRobotpolicy( 'noindex,nofollow' );
 
 			$sk = $wgUser->getSkin();
-			$loglink = $sk->makeKnownLink( $wgLang->getNsText(
-			  Namespace::getWikipedia() ) .
+			$loglink = $sk->makeKnownLink( $wgLang->getNsText( NS_WIKIPEDIA ) .
 			  ':' . wfMsg( 'dellogpage' ), wfMsg( 'deletionlog' ) );
 
 			$text = wfMsg( "deletedtext", $deleted, $loglink );
@@ -1377,9 +1426,10 @@ class Article {
 
 		$fname = 'Article::doDeleteArticle';
 		wfDebug( $fname."\n" );
-
+		
+		$dbw =& wfGetDB( DB_MASTER );
 		$ns = $this->mTitle->getNamespace();
-		$t = wfStrencode( $this->mTitle->getDBkey() );
+		$t = $this->mTitle->getDBkey();
 		$id = $this->mTitle->getArticleID();
 
 		if ( '' == $t || $id == 0 ) {
@@ -1388,14 +1438,14 @@ class Article {
 
 		$u = new SiteStatsUpdate( 0, 1, -$this->isCountable( $this->getContent( true ) ) );
 		array_push( $wgDeferredUpdateList, $u );
-		
+
 		$linksTo = $this->mTitle->getLinksTo();
 
 		# Squid purging
 		if ( $wgUseSquid ) {
-			$urls = array(	
+			$urls = array(
 				$this->mTitle->getInternalURL(),
-				$this->mTitle->getInternalURL( 'history' ) 
+				$this->mTitle->getInternalURL( 'history' )
 			);
 			foreach ( $linksTo as $linkTo ) {
 				$urls[] = $linkTo->getInternalURL();
@@ -1410,68 +1460,75 @@ class Article {
 		Title::touchArray( $linksTo );
 
 		# Move article and history to the "archive" table
-		$sql = 'INSERT INTO archive (ar_namespace,ar_title,ar_text,' .
-		  'ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit,' .
-		  'ar_flags) SELECT cur_namespace,cur_title,cur_text,cur_comment,' .
-		  'cur_user,cur_user_text,cur_timestamp,cur_minor_edit,0 FROM cur ' .
-		  "WHERE cur_namespace={$ns} AND cur_title='{$t}'";
-		wfQuery( $sql, DB_WRITE, $fname );
-
-		$sql = 'INSERT INTO archive (ar_namespace,ar_title,ar_text,' .
-		  'ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit,' .
-		  'ar_flags) SELECT old_namespace,old_title,old_text,old_comment,' .
-		  'old_user,old_user_text,old_timestamp,old_minor_edit,old_flags ' .
-		  "FROM old WHERE old_namespace={$ns} AND old_title='{$t}'";
-		wfQuery( $sql, DB_WRITE, $fname );
-
+		$archiveTable = $dbw->tableName( 'archive' );
+		$oldTable = $dbw->tableName( 'old' );
+		$curTable = $dbw->tableName( 'cur' );
+		$recentchangesTable = $dbw->tableName( 'recentchanges' );
+		$linksTable = $dbw->tableName( 'links' );
+		$brokenlinksTable = $dbw->tableName( 'brokenlinks' );
+		
+		$dbw->insertSelect( 'archive', 'cur', 
+			array(
+				'ar_namespace' => 'cur_namespace',
+				'ar_title' => 'cur_title',
+				'ar_text' => 'cur_text',
+				'ar_comment' => 'cur_comment',
+				'ar_user' => 'cur_user',
+				'ar_user_text' => 'cur_user_text',
+				'ar_timestamp' => 'cur_timestamp',
+				'ar_minor_edit' => 'cur_minor_edit',
+				'ar_flags' => 0,
+			), array(
+				'cur_namespace' => $ns,
+				'cur_title' => $t,
+			), $fname 
+		);
+		
+		$dbw->insertSelect( 'archive', 'old',
+			array(
+				'ar_namespace' => 'old_namespace',
+				'ar_title' => 'old_title',
+				'ar_text' => 'old_text',
+				'ar_comment' => 'old_comment',
+				'ar_user' => 'old_user',
+				'ar_user_text' => 'old_user_text',
+				'ar_timestamp' => 'old_timestamp',
+				'ar_minor_edit' => 'old_minor_edit',
+				'ar_flags' => 'old_flags'
+			), array(
+				'old_namespace' => $ns,
+				'old_title' => $t,
+			), $fname
+		);
+		
 		# Now that it's safely backed up, delete it
 
-		$sql = "DELETE FROM cur WHERE cur_namespace={$ns} AND " .
-		  "cur_title='{$t}'";
-		wfQuery( $sql, DB_WRITE, $fname );
-
-		$sql = "DELETE FROM old WHERE old_namespace={$ns} AND " .
-		  "old_title='{$t}'";
-		wfQuery( $sql, DB_WRITE, $fname );
-		
-		$sql = "DELETE FROM recentchanges WHERE rc_namespace={$ns} AND " .
-		  "rc_title='{$t}'";
-       		wfQuery( $sql, DB_WRITE, $fname );
+		$dbw->delete( 'cur', array( 'cur_namespace' => $ns, 'cur_title' => $t ), $fname );
+		$dbw->delete( 'old', array( 'old_namespace' => $ns, 'old_title' => $t ), $fname );
+		$dbw->delete( 'recentchanges', array( 'rc_namespace' => $ns, 'rc_title' => $t ), $fname );
 
 		# Finally, clean up the link tables
-		$t = wfStrencode( $this->mTitle->getPrefixedDBkey() );
+		$t = $this->mTitle->getPrefixedDBkey();
 
 		Article::onArticleDelete( $this->mTitle );
-		
-		$sql = 'INSERT INTO brokenlinks (bl_from,bl_to) VALUES ';
-		$first = true;
 
+		# Insert broken links
+		$brokenLinks = array();
 		foreach ( $linksTo as $titleObj ) {
-			if ( ! $first ) { $sql .= ','; }
-			$first = false;
 			# Get article ID. Efficient because it was loaded into the cache by getLinksTo().
-			$linkID = $titleObj->getArticleID(); 
-			$sql .= "({$linkID},'{$t}')";
-		}
-		if ( ! $first ) {
-			wfQuery( $sql, DB_WRITE, $fname );
+			$linkID = $titleObj->getArticleID();
+			$brokenLinks[] = array( 'bl_from' => $linkID, 'bl_to' => $t );
 		}
-
-		$sql = "DELETE FROM links WHERE l_to={$id}";
-		wfQuery( $sql, DB_WRITE, $fname );
-
-		$sql = "DELETE FROM links WHERE l_from={$id}";
-		wfQuery( $sql, DB_WRITE, $fname );
-
-		$sql = "DELETE FROM imagelinks WHERE il_from={$id}";
-		wfQuery( $sql, DB_WRITE, $fname );
-
-		$sql = "DELETE FROM brokenlinks WHERE bl_from={$id}";
-		wfQuery( $sql, DB_WRITE, $fname );
-		
-		$sql = "DELETE FROM categorylinks WHERE cl_from={$id}";
-		wfQuery( $sql, DB_WRITE, $fname );
+		$dbw->insert( 'brokenlinks', $brokenLinks, $fname, 'IGNORE' );
 		
+		# Delete live links
+		$dbw->delete( 'links', array( 'l_to' => $id ) );
+		$dbw->delete( 'links', array( 'l_from' => $id ) );
+		$dbw->delete( 'imagelinks', array( 'il_from' => $id ) );
+		$dbw->delete( 'brokenlinks', array( 'bl_from' => $id ) );
+		$dbw->delete( 'categorylinks', array( 'cl_from' => $id ) );
+
+		# Log the deletion
 		$log = new LogPage( wfMsg( 'dellogpage' ), wfMsg( 'dellogpagetext' ) );
 		$art = $this->mTitle->getPrefixedText();
 		$log->addEntry( wfMsg( 'deletedarticle', $art ), $reason );
@@ -1484,8 +1541,9 @@ class Article {
 
 	function rollback()
 	{
-		global $wgUser, $wgLang, $wgOut, $wgRequest, $wgIsMySQL, $wgIsPg;
-
+		global $wgUser, $wgLang, $wgOut, $wgRequest;
+		$fname = "Article::rollback";
+		
 		if ( ! $wgUser->isSysop() ) {
 			$wgOut->sysopRequired();
 			return;
@@ -1494,28 +1552,30 @@ class Article {
 			$wgOut->readOnlyPage( $this->getContent( true ) );
 			return;
 		}
-		
+		$dbw =& wfGetDB( DB_MASTER );
+
 		# Enhanced rollback, marks edits rc_bot=1
 		$bot = $wgRequest->getBool( 'bot' );
-		
+
 		# Replace all this user's current edits with the next one down
-		$tt = wfStrencode( $this->mTitle->getDBKey() );
+		$tt = $this->mTitle->getDBKey();
 		$n = $this->mTitle->getNamespace();
-		
-		# Get the last editor
-		$sql = 'SELECT cur_id,cur_user,cur_user_text,cur_comment ' .
-		       "FROM cur WHERE cur_title='{$tt}' AND cur_namespace={$n}";
-		$res = wfQuery( $sql, DB_READ );
-		if( ($x = wfNumRows( $res )) != 1 ) {
+
+		# Get the last editor, lock table exclusively
+		$s = $dbw->getArray( 'cur', 
+			array( 'cur_id','cur_user','cur_user_text','cur_comment' ),
+			array( 'cur_title' => $tt, 'cur_namespace' => $n ),
+			$fname, 'FOR UPDATE'
+		);
+		if( $s === false ) {
 			# Something wrong
 			$wgOut->addHTML( wfMsg( 'notanarticle' ) );
 			return;
 		}
-		$s = wfFetchObject( $res );
-		$ut = wfStrencode( $s->cur_user_text );
+		$ut = $dbw->strencode( $s->cur_user_text );
 		$uid = $s->cur_user;
 		$pid = $s->cur_id;
-		
+
 		$from = str_replace( '_', ' ', $wgRequest->getVal( 'from' ) );
 		if( $from != $s->cur_user_text ) {
 			$wgOut->setPageTitle(wfmsg('rollbackfailed'));
@@ -1530,30 +1590,33 @@ class Article {
 			}
 			return;
 		}
-		
-		# Get the last edit not by this guy
 
-		$use_index=$wgIsMySQL?"USE INDEX (name_title_timestamp)":"";
-		$oldtable=$wgIsPg?'"old"':'old';
-		$sql = 'SELECT old_text,old_user,old_user_text,old_timestamp,old_flags ' .
-		"FROM $oldtable {$use_index} " .
-		"WHERE old_namespace={$n} AND old_title='{$tt}' " .
-		"AND (old_user <> {$uid} OR old_user_text <> '{$ut}') " .
-		'ORDER BY inverse_timestamp LIMIT 1';
-		$res = wfQuery( $sql, DB_READ );
-		if( wfNumRows( $res ) != 1 ) {
+		# Get the last edit not by this guy
+		$s = $dbw->getArray( 'old', 
+			array( 'old_text','old_user','old_user_text','old_timestamp','old_flags' ),
+			array( 
+				'old_namespace' => $n, 
+				'old_title' => $tt,
+				"old_user <> {$uid} OR old_user_text <> '{$ut}'"
+			), $fname, array( 'FOR UPDATE', 'USE INDEX' => 'name_title_timestamp' )
+		);
+		if( $s === false ) {
 			# Something wrong
 			$wgOut->setPageTitle(wfMsg('rollbackfailed'));
 			$wgOut->addHTML( wfMsg( 'cantrollback' ) );
 			return;
 		}
-		$s = wfFetchObject( $res );
-		
+
 		if ( $bot ) {
 			# Mark all reverted edits as bot
-			$sql = 'UPDATE recentchanges SET rc_bot=1 WHERE ' .
-				"rc_cur_id=$pid AND rc_user=$uid AND rc_timestamp > '{$s->old_timestamp}'";
-			wfQuery( $sql, DB_WRITE, $fname );
+			$dbw->updateArray( 'recentchanges', 
+				array( /* SET */ 
+					'rc_bot' => 1 
+				), array( /* WHERE */
+					'rc_user' => $uid,
+					"rc_timestamp > '{$s->old_timestamp}'",
+				), $fname 
+			);
 		}
 
 		# Save it!
@@ -1565,7 +1628,7 @@ class Article {
 		Article::onArticleEdit( $this->mTitle );
 		$wgOut->returnToMain( false );
 	}
-	
+
 
 	# Do standard deferred updates after page view
 
@@ -1579,10 +1642,10 @@ class Article {
 				$u = new SiteStatsUpdate( 1, 0, 0 );
 				array_push( $wgDeferredUpdateList, $u );
 			}
-			$u = new UserTalkUpdate( 0, $this->mTitle->getNamespace(),
-			  $this->mTitle->getDBkey() );
-			array_push( $wgDeferredUpdateList, $u );
 		}
+		$u = new UserTalkUpdate( 0, $this->mTitle->getNamespace(),
+		  $this->mTitle->getDBkey() );
+		array_push( $wgDeferredUpdateList, $u );
 	}
 
 	# Do standard deferred updates after page edit.
@@ -1592,17 +1655,18 @@ class Article {
 	{
 		global $wgDeferredUpdateList, $wgDBname, $wgMemc;
 		global $wgMessageCache;
-
+		
 		wfSeedRandom();
 		if ( 0 == mt_rand( 0, 999 ) ) {
+			$dbw =& wfGetDB( DB_MASTER );
 			$cutoff = wfUnix2Timestamp( time() - ( 7 * 86400 ) );
 			$sql = "DELETE FROM recentchanges WHERE rc_timestamp < '{$cutoff}'";
-			wfQuery( $sql, DB_WRITE );
+			$dbw->query( $sql );
 		}
 		$id = $this->getID();
 		$title = $this->mTitle->getPrefixedDBkey();
 		$shortTitle = $this->mTitle->getDBkey();
-		
+
 		$adj = $this->mCountAdjustment;
 
 		if ( 0 != $id ) {
@@ -1639,7 +1703,7 @@ class Article {
 		global $wgParser, $wgUser;
 		return $wgParser->preSaveTransform( $text, $this->mTitle, $wgUser, ParserOptions::newFromUser( $wgUser ) );
 	}
-	
+
 	/* Caching functions */
 
 	# checkLastModified returns true if it has taken care of all
@@ -1666,7 +1730,7 @@ class Article {
 				$cache->loadFromFileCache();
 				return true;
 			} else {
-				wfDebug( " tryFileCache() - starting buffer\n" );			
+				wfDebug( " tryFileCache() - starting buffer\n" );
 				ob_start( array(&$cache, 'saveToFileCache' ) );
 			}
 		} else {
@@ -1677,27 +1741,30 @@ class Article {
 	function isFileCacheable() {
 		global $wgUser, $wgUseFileCache, $wgShowIPinHeader, $wgRequest;
 		extract( $wgRequest->getValues( 'action', 'oldid', 'diff', 'redirect', 'printable' ) );
-		
+
 		return $wgUseFileCache
 			and (!$wgShowIPinHeader)
 			and ($this->getID() != 0)
 			and ($wgUser->getId() == 0)
 			and (!$wgUser->getNewtalk())
-			and ($this->mTitle->getNamespace() != Namespace::getSpecial())
-			and ($action == 'view')
+			and ($this->mTitle->getNamespace() != NS_SPECIAL )
+			and ($action == 'view' || empty( $action ))
 			and (!isset($oldid))
 			and (!isset($diff))
 			and (!isset($redirect))
 			and (!isset($printable))
 			and (!$this->mRedirectedFrom);
 	}
-	
+
 	# Loads cur_touched and returns a value indicating if it should be used
 	function checkTouched() {
+		$fname = 'Article::checkTouched';
+
 		$id = $this->getID();
-		$sql = 'SELECT cur_touched,cur_is_redirect FROM cur WHERE cur_id='.$id;
-		$res = wfQuery( $sql, DB_READ, 'Article::checkTouched' );
-		if( $s = wfFetchObject( $res ) ) {
+		$dbr =& wfGetDB( DB_SLAVE );
+		$s = $dbr->getArray( 'cur', array( 'cur_touched', 'cur_is_redirect' ), 
+			array( 'cur_id' => $id ), $fname );
+		if( $s !== false ) {
 			$this->mTouched = $s->cur_touched;
 			return !$s->cur_is_redirect;
 		} else {
@@ -1707,24 +1774,35 @@ class Article {
 
 	# Edit an article without doing all that other stuff
 	function quickEdit( $text, $comment = '', $minor = 0 ) {
-		global $wgUser, $wgMwRedir, $wgIsPg;
+		global $wgUser, $wgMwRedir;
 		$fname = 'Article::quickEdit';
 		wfProfileIn( $fname );
 
+		$dbw =& wfGetDB( DB_MASTER );
 		$ns = $this->mTitle->getNamespace();
 		$dbkey = $this->mTitle->getDBkey();
-		$encDbKey = wfStrencode( $dbkey );
+		$encDbKey = $dbw->strencode( $dbkey );
 		$timestamp = wfTimestampNow();
-		
+
 		# Save to history
-                $oldtable=$wgIsPg?'"old"':'old';
-		$sql = "INSERT INTO $oldtable (old_namespace,old_title,old_text,old_comment,old_user,old_user_text,old_timestamp,inverse_timestamp)
-		  SELECT cur_namespace,cur_title,cur_text,cur_comment,cur_user,cur_user_text,cur_timestamp,99999999999999-cur_timestamp
-		  FROM cur WHERE cur_namespace=$ns AND cur_title='$encDbKey'";
-		wfQuery( $sql, DB_WRITE );
-		
+		$dbw->insertSelect( 'old', 'cur',
+			array(
+				'old_namespace' => 'cur_namespace',
+				'old_title' => 'cur_title',
+				'old_text' => 'cur_text',
+				'old_comment' => 'cur_comment',
+				'old_user' => 'cur_user',
+				'old_user_text' => 'cur_user_text',
+				'old_timestamp' => 'cur_timestamp',
+				'inverse_timestamp' => '99999999999999-cur_timestamp',
+			), array(
+				'cur_namespace' => $ns,
+				'cur_title' => $dbkey,
+			), $fname 
+		);
+
 		# Use the affected row count to determine if the article is new
-		$numRows = wfAffectedRows();
+		$numRows = $dbw->affectedRows();
 
 		# Make an array of fields to be inserted
 		$fields = array(
@@ -1742,14 +1820,14 @@ class Article {
 		if ( $numRows ) {
 			# Update article
 			$fields['cur_is_new'] = 0;
-			wfUpdateArray( 'cur', $fields, array( 'cur_namespace' => $ns, 'cur_title' => $dbkey ), $fname );
+			$dbw->updateArray( 'cur', $fields, array( 'cur_namespace' => $ns, 'cur_title' => $dbkey ), $fname );
 		} else {
 			# Insert new article
 			$fields['cur_is_new'] = 1;
 			$fields['cur_namespace'] = $ns;
 			$fields['cur_title'] = $dbkey;
 			$fields['cur_random'] = $rand = number_format( mt_rand() / mt_getrandmax(), 12, '.', '' );
-			wfInsertArray( 'cur', $fields, $fname );
+			$dbw->insertArray( 'cur', $fields, $fname );
 		}
 		wfProfileOut( $fname );
 	}
@@ -1759,60 +1837,64 @@ class Article {
 		$id = intval( $id );
 		global $wgHitcounterUpdateFreq;
 
-		if( $wgHitcounterUpdateFreq <= 1 ){ // 
-			wfQuery('UPDATE cur SET cur_counter = cur_counter + 1 ' .
-				'WHERE cur_id = '.$id, DB_WRITE);
+		$dbw =& wfGetDB( DB_MASTER );
+		$curTable = $dbw->tableName( 'cur' );
+		$hitcounterTable = $dbw->tableName( 'hitcounter' );
+		$acchitsTable = $dbw->tableName( 'acchits' );
+		
+		if( $wgHitcounterUpdateFreq <= 1 ){ //
+			$dbw->query( "UPDATE $curTable SET cur_counter = cur_counter + 1 WHERE cur_id = $id" );
 			return;
 		}
 
 		# Not important enough to warrant an error page in case of failure
-		$oldignore = wfIgnoreSQLErrors( true ); 
+		$oldignore = $dbw->ignoreErrors( true ); 
 
-		wfQuery("INSERT INTO hitcounter (hc_id) VALUES ({$id})", DB_WRITE);
+		$dbw->query( "INSERT INTO $hitcounterTable (hc_id) VALUES ({$id})" );
 
 		$checkfreq = intval( $wgHitcounterUpdateFreq/25 + 1 );
-		if( (rand() % $checkfreq != 0) or (wfLastErrno() != 0) ){
+		if( (rand() % $checkfreq != 0) or ($dbw->lastErrno() != 0) ){
 			# Most of the time (or on SQL errors), skip row count check
-			wfIgnoreSQLErrors( $oldignore );
+			$dbw->ignoreErrors( $oldignore );
 			return;
 		}
 
-		$res = wfQuery('SELECT COUNT(*) as n FROM hitcounter', DB_WRITE);
-		$row = wfFetchObject( $res );
+		$res = $dbw->query("SELECT COUNT(*) as n FROM $hitcounterTable");
+		$row = $dbw->fetchObject( $res );
 		$rown = intval( $row->n );
-		if( $rown >= $wgHitcounterUpdateFreq ){ 
+		if( $rown >= $wgHitcounterUpdateFreq ){
 			wfProfileIn( 'Article::incViewCount-collect' );
 			$old_user_abort = ignore_user_abort( true );
 
-			wfQuery('LOCK TABLES hitcounter WRITE', DB_WRITE);
-			wfQuery('CREATE TEMPORARY TABLE acchits TYPE=HEAP '.
-				'SELECT hc_id,COUNT(*) AS hc_n FROM hitcounter '.
-				'GROUP BY hc_id', DB_WRITE);
-			wfQuery('DELETE FROM hitcounter', DB_WRITE);
-			wfQuery('UNLOCK TABLES', DB_WRITE);
-			wfQuery('UPDATE cur,acchits SET cur_counter=cur_counter + hc_n '.
-				'WHERE cur_id = hc_id', DB_WRITE);
-			wfQuery('DROP TABLE acchits', DB_WRITE);
+			$dbw->query("LOCK TABLES $hitcounterTable WRITE");
+			$dbw->query("CREATE TEMPORARY TABLE $acchitsTable TYPE=HEAP ".
+				"SELECT hc_id,COUNT(*) AS hc_n FROM $hitcounterTable ".
+				'GROUP BY hc_id');
+			$dbw->query("DELETE FROM $hitcounterTable");
+			$dbw->query('UNLOCK TABLES');
+			$dbw->query("UPDATE $curTable,$acchitsTable SET cur_counter=cur_counter + hc_n ".
+				'WHERE cur_id = hc_id');
+			$dbw->query("DROP TABLE $acchitsTable");
 
 			ignore_user_abort( $old_user_abort );
 			wfProfileOut( 'Article::incViewCount-collect' );
 		}
-		wfIgnoreSQLErrors( $oldignore );
+		$dbw->ignoreErrors( $oldignore );
 	}
 
 	# The onArticle*() functions are supposed to be a kind of hooks
-	# which should be called whenever any of the specified actions 
-	# are done. 
+	# which should be called whenever any of the specified actions
+	# are done.
 	#
-	# This is a good place to put code to clear caches, for instance. 
+	# This is a good place to put code to clear caches, for instance.
 
-	# This is called on page move and undelete, as well as edit	
+	# This is called on page move and undelete, as well as edit
 	/* static */ function onArticleCreate($title_obj){
 		global $wgUseSquid, $wgDeferredUpdateList;
 
 		$titles = $title_obj->getBrokenLinksTo();
-		
-		# Purge squid 
+
+		# Purge squid
 		if ( $wgUseSquid ) {
 			$urls = $title_obj->getSquidURLs();
 			foreach ( $titles as $linkTitle ) {
@@ -1833,6 +1915,75 @@ class Article {
 	/* static */ function onArticleEdit($title_obj){
 		LinkCache::linksccClearPage( $title_obj->getArticleID() );
 	}
+
+	# Info about this page
+
+	function info()
+	{
+		global $wgUser, $wgTitle, $wgOut, $wgLang, $wgAllowPageInfo;
+		$fname = 'Article::info';
+	
+		if ( !$wgAllowPageInfo ) {
+			$wgOut->errorpage( "nosuchaction", "nosuchactiontext" );
+			return;
+		}
+		
+		$dbr =& wfGetDB( DB_SLAVE );
+
+		$basenamespace = $wgTitle->getNamespace() & (~1);
+		$cur_clause = array( 'cur_title' => $wgTitle->getDBkey(), 'cur_namespace' => $basenamespace );
+		$old_clause = array( 'old_title' => $wgTitle->getDBkey(), 'old_namespace' => $basenamespace );
+		$wl_clause  = array( 'wl_title' => $wgTitle->getDBkey(), 'wl_namespace' => $basenamespace );
+		$fullTitle = $wgTitle->makeName($basenamespace, $wgTitle->getDBKey());
+		$wgOut->setPagetitle(  $fullTitle );
+		$wgOut->setSubtitle( wfMsg( "infosubtitle" ));
+
+		# first, see if the page exists at all.
+		$exists = $dbr->selectField( 'cur', 'COUNT(*)', $cur_clause, $fname );
+		if ($exists < 1) {
+			$wgOut->addHTML( wfMsg("noarticletext") );
+		} else {
+			$numwatchers = $dbr->selectField( 'watchlist', 'COUNT(*)', $wl_clause, $fname );
+			$wgOut->addHTML( "<ul><li>" . wfMsg("numwatchers", $numwatchers) . "</li>" );
+			$old = $dbr->selectField( 'old', 'COUNT(*)', $old_clause, $fname );
+			$wgOut->addHTML( "<li>" . wfMsg("numedits", $old + 1) . "</li>");
+
+			# to find number of distinct authors, we need to do some
+			# funny stuff because of the cur/old table split:
+			# - first, find the name of the 'cur' author
+			# - then, find the number of *other* authors in 'old'
+
+			# find 'cur' author
+			$cur_author = $dbr->selectField( 'cur', 'cur_user_text', $cur_clause, $fname );
+
+			# find number of 'old' authors excluding 'cur' author
+			$authors = $dbr->selectField( 'old', 'COUNT(DISTINCT old_user_text)', 
+				$old_clause + array( 'old_user_text<>' . $dbr->addQuotes( $cur_author ) ), $fname ) + 1;
+
+			# now for the Talk page ...
+			$cur_clause = array( 'cur_title' => $wgTitle->getDBkey(), 'cur_namespace' => $basenamespace+1 );
+			$old_clause = array( 'old_title' => $wgTitle->getDBkey(), 'old_namespace' => $basenamespace+1 );
+
+			# does it exist?
+			$exists = $dbr->selectField( 'cur', 'COUNT(*)', $cur_clause, $fname );
+
+			# number of edits
+			if ($exists > 0) {
+				$old = $dbr->selectField( 'old', 'COUNT(*)', $old_clause, $fname );
+				$wgOut->addHTML( "<li>" . wfMsg("numtalkedits", $old + 1) . "</li>");
+			}
+			$wgOut->addHTML( "<li>" . wfMsg("numauthors", $authors) . "</li>" );
+
+			# number of authors
+			if ($exists > 0) {
+				$cur_author = $dbr->selectField( 'cur', 'cur_user_text', $cur_clause, $fname );
+				$authors = $dbr->selectField( 'cur', 'COUNT(DISTINCT old_user_text)', 
+					$old_clause + array( 'old_user_text<>' . $dbr->addQuotes( $cur_author ) ), $fname );
+
+				$wgOut->addHTML( "<li>" . wfMsg("numtalkauthors", $authors) . "</li></ul>" );
+			}
+		}
+	}
 }
 
 ?>