X-Git-Url: http://git.cyclocoop.org/%22%20.%20generer_url_ecrire%28%22articles_versions%22%2C%22id_article=%24id_article%22%29%20.%20%22?a=blobdiff_plain;f=includes%2Fdb%2FMWLBFactory.php;h=f0a17f7bf7ecec62e1f8e2734d20d6bb2e5bf212;hb=4ccb228bde9294d96ddcb5c255565c89dbcbf879;hp=5c79117f7887b4e1339173a13f475e37a7346eb3;hpb=6e62381aaa2e0d0ee572e3827800d05d9a5c67a4;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/db/MWLBFactory.php b/includes/db/MWLBFactory.php
index 5c79117f78..f0a17f7bf7 100644
--- a/includes/db/MWLBFactory.php
+++ b/includes/db/MWLBFactory.php
@@ -23,6 +23,7 @@
 
 use MediaWiki\Logger\LoggerFactory;
 use MediaWiki\MediaWikiServices;
+use Wikimedia\Rdbms\LBFactory;
 use Wikimedia\Rdbms\DatabaseDomain;
 
 /**
@@ -201,4 +202,30 @@ abstract class MWLBFactory {
 
 		return $class;
 	}
+
+	public static function setSchemaAliases( LBFactory $lbFactory ) {
+		$mainLB = $lbFactory->getMainLB();
+		$masterType = $mainLB->getServerType( $mainLB->getWriterIndex() );
+		if ( $masterType === 'mysql' ) {
+			/**
+			 * When SQLite indexes were introduced in r45764, it was noted that
+			 * SQLite requires index names to be unique within the whole database,
+			 * not just within a schema. As discussed in CR r45819, to avoid the
+			 * need for a schema change on existing installations, the indexes
+			 * were implicitly mapped from the new names to the old names.
+			 *
+			 * This mapping can be removed if DB patches are introduced to alter
+			 * the relevant tables in existing installations. Note that because
+			 * this index mapping applies to table creation, even new installations
+			 * of MySQL have the old names (except for installations created during
+			 * a period where this mapping was inappropriately removed, see
+			 * T154872).
+			 */
+			$lbFactory->setIndexAliases( [
+				'ar_usertext_timestamp' => 'usertext_timestamp',
+				'un_user_id' => 'user_id',
+				'un_user_ip' => 'user_ip',
+			] );
+		}
+	}
 }