Index: branches/5.3.x/core/kernel/db/i_db_connection.php
===================================================================
diff -u -N -r15922 -r15956
--- branches/5.3.x/core/kernel/db/i_db_connection.php	(.../i_db_connection.php)	(revision 15922)
+++ branches/5.3.x/core/kernel/db/i_db_connection.php	(.../i_db_connection.php)	(revision 15956)
@@ -21,6 +21,15 @@
 	interface IDBConnection {
 
 		/**
+		 * Sets new error handler.
+		 *
+		 * @param mixed $error_handler Error handler.
+		 *
+		 * @return self
+		 */
+		public function setErrorHandler($error_handler);
+
+		/**
 		 * Checks if previous query execution raised an error.
 		 *
 		 * @return bool