rollback last change until we figure out how to check for engine without exception

diff --git a/lib/sqlalchemy/schema.py b/lib/sqlalchemy/schema.py
index 4c7d15c638960579f8cfe27f144e6d75383d5549..0adfaa1c1da2d85610c75e43619919b82a698892 100644 (file)
--- a/lib/sqlalchemy/schema.py
+++ b/lib/sqlalchemy/schema.py
@@ -987,7 +987,8 @@ class DynamicMetaData(MetaData):
         if hasattr(self.context, '_engine'):
             return self.context._engine
         else:
-            raise exceptions.InvalidRequestError("This DynamicMetaData is not connected to any engine")
+            return None
+#            raise exceptions.InvalidRequestError("This DynamicMetaData is not connected to any engine")
     engine=property(_get_engine)
             
 class SchemaVisitor(sql.ClauseVisitor):