If no database adapter is given, choose the first one.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1388 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/storage/database/__init__.py

@@ -24,6 +24,8 @@ DATABASE_MANAGER_DICT = {
 }
 
 def buildDatabaseManager(name, config):
+    if name is None:
+        name = DATABASE_MANAGER_DICT.keys()[0]
     adapter_klass = DATABASE_MANAGER_DICT.get(name, None)
     if adapter_klass is None:
         raise DatabaseFailure('Cannot find a database adapter <%s>' % name)