From 50e1d7fdf0c107639f6fb8ea07f164bfe90d4700 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@users.mediawiki.org>
Date: Mon, 5 May 2008 22:21:01 +0000
Subject: [PATCH] Revert r34199, r34205 for now. I don't really like the var
 name $wgSharedDBtables (inconsistent caps).

Compare with Gregory's patch on bug 2396:
https://bugzilla.wikimedia.org/show_bug.cgi?id=2396
https://bugzilla.wikimedia.org/attachment.cgi?id=3610

That uses a var named $wgSharedTables, but makes it more flexible (allowing arbitrary DB and prefix per table), which may or may not be a super idea.
---
 includes/Database.php        |  6 ++----
 includes/DefaultSettings.php | 19 ++++---------------
 2 files changed, 6 insertions(+), 19 deletions(-)

diff --git a/includes/Database.php b/includes/Database.php
index 2b20d98e72..1f19226e32 100644
--- a/includes/Database.php
+++ b/includes/Database.php
@@ -1365,15 +1365,13 @@ class Database {
 	 * @param string $name database table name
 	 */
 	function tableName( $name ) {
-		global $wgSharedDB, $wgSharedDBtables;
+		global $wgSharedDB;
 		# Skip quoted literals
 		if ( $name{0} != '`' ) {
 			if ( $this->mTablePrefix !== '' &&  strpos( $name, '.' ) === false ) {
 				$name = "{$this->mTablePrefix}$name";
 			}
-			if ( isset( $wgSharedDB ) && isset( $wgSharedDBtables )
-			 && substr( $name, 0, strlen($this->mTablePrefix) ) == $this->mTablePrefix
-			 && in_array( substr( $name, strlen($this->mTablePrefix) ), $wgSharedDBtables ) ) {
+			if ( isset( $wgSharedDB ) && "{$this->mTablePrefix}user" == $name ) {
 				$name = "`$wgSharedDB`.`$name`";
 			} else {
 				# Standard quoting
diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index 7c2709011c..9b2928a9c0 100644
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -577,25 +577,14 @@ $wgAllDBsAreLocalhost = false;
 /** Live high performance sites should disable this - some checks acquire giant mysql locks */
 $wgCheckDBSchema = true;
 
-/**
- * Shared database for multiple wikis.
- * The server for this database must be the same as for the main database.
- * EXPERIMENTAL
- */
-$wgSharedDB = null;
 
 /**
- * List of database tables (without prefixes) to share when $wgSharedDB is enabled.
- * This only includes the user table by default for backwards compatibility.
- * However you may remove it so that you can enable extensions using the shared
- * DB without having shared users. Or you can add in another table, such as
- * interwiki to force MediaWiki to use the shared version of the table instead.
- * 
- * Be carefull with sharing tables. The images, revisions, pages, and many of
- * the other tables may have bad side effects if you share them.
+ * Shared database for multiple wikis. Presently used for storing a user table
+ * for single sign-on. The server for this database must be the same as for the
+ * main database.
  * EXPERIMENTAL
  */
-$wgSharedDBtables = array( 'user' );
+$wgSharedDB = null;
 
 /**
  * Database load balancer
-- 
2.20.1