From e1292a9ee29699c30a736e03b740c115085552b1 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@users.mediawiki.org>
Date: Mon, 30 May 2005 09:34:01 +0000
Subject: [PATCH] Don't create links & brokenlinks on new installations; skip
 links table update if pagelinks already exists.

---
 maintenance/tables.sql   | 39 ---------------------------------------
 maintenance/updaters.inc | 19 ++++++++++++++-----
 2 files changed, 14 insertions(+), 44 deletions(-)

diff --git a/maintenance/tables.sql b/maintenance/tables.sql
index 00416f3741..8b73be61e1 100644
--- a/maintenance/tables.sql
+++ b/maintenance/tables.sql
@@ -329,45 +329,6 @@ CREATE TABLE /*$wgDBprefix*/archive (
 
 ) TYPE=InnoDB;
 
---
--- Track links within the wiki that do exist.
--- These rows must be removed when the target page is
--- deleted, and replaced with brokenlinks entries.
--- They must also be updated if a target page is renamed.
---
-CREATE TABLE /*$wgDBprefix*/links (
-  -- Key to the page_id of the page containing the link.
-  l_from int(8) unsigned NOT NULL default '0',
-  
-  -- Key to the page_id of the link target.
-  -- An unfortunate consequence of this is that rename
-  -- operations require changing the links entries for
-  -- all links to the moved page.
-  l_to int(8) unsigned NOT NULL default '0',
-  
-  UNIQUE KEY l_from(l_from,l_to),
-  KEY (l_to)
-
-) TYPE=InnoDB;
-
---
--- Track links to pages that don't yet exist.
--- These rows must be removed when the target page
--- is created, and replaced with links table entries.
---
-CREATE TABLE /*$wgDBprefix*/brokenlinks (
-  -- Key to the page_id of the page containing the link.
-  bl_from int(8) unsigned NOT NULL default '0',
-  
-  -- Text of the target page title ("namesapce:title").
-  -- Unfortunately this doesn't split the namespace index
-  -- key and therefore can't easily be joined to anything.
-  bl_to varchar(255) binary NOT NULL default '',
-  UNIQUE KEY bl_from(bl_from,bl_to),
-  KEY (bl_to)
-
-) TYPE=InnoDB;
-
 
 --
 -- Track page-to-page hyperlinks within the wiki.
diff --git a/maintenance/updaters.inc b/maintenance/updaters.inc
index b21de9eb57..c319c9c348 100644
--- a/maintenance/updaters.inc
+++ b/maintenance/updaters.inc
@@ -550,15 +550,24 @@ function do_pagelinks_namespace( $namespace ) {
 }
 
 function do_drop_img_type() {
-	 global $wgDatabase;
-	 
-	 if ($wgDatabase->fieldExists('image', 'img_type')) {
+	global $wgDatabase;
+	
+	if( $wgDatabase->fieldExists( 'image', 'img_type' ) ) {
 		echo "Dropping unused img_type field in image table... ";
 		dbsource( "maintenance/archives/patch-drop_img_type.sql", $wgDatabase );
 		echo "ok\n";
 	} else {
 		echo "No img_type field in image table; Good.\n";
-        }
+	}
+}
+
+function do_old_links_update() {
+	global $wgDatabase;
+	if( $wgDatabase->tableExists( 'pagelinks' ) ) {
+		echo "Already have pagelinks; skipping old links table updates.\n";
+	} else {
+		convertLinks(); flush();
+	}
 }
 
 function do_all_updates() {
@@ -588,7 +597,7 @@ function do_all_updates() {
 	do_interwiki_update(); flush();
 	do_index_update(); flush();
 	do_linkscc_1_3_update(); flush();
-	convertLinks(); flush();
+	do_old_links_update(); flush();
 	do_image_name_unique_update(); flush();
 	do_watchlist_update(); flush();
 	do_user_update(); flush();
-- 
2.20.1