- Connection.invalidate() checks for closed status

to avoid attribute errors. [ticket:1246]

2 files changed, 6 insertions, 0 deletions

diff --git a/CHANGES b/CHANGES
index 5f3808cce..8a03d4715 100644
--- a/CHANGES
+++ b/CHANGES
@@ -21,6 +21,10 @@ CHANGES
 
     - Fixed bug in composite types which prevented a primary-key
       composite type from being mutated [ticket:1213].
+
+- sql
+    - Connection.invalidate() checks for closed status 
+      to avoid attribute errors. [ticket:1246]
       
 0.4.8
 =====
diff --git a/lib/sqlalchemy/engine/base.py b/lib/sqlalchemy/engine/base.py
index f45644a8e..df4963a33 100644
--- a/lib/sqlalchemy/engine/base.py
+++ b/lib/sqlalchemy/engine/base.py
@@ -637,6 +637,8 @@ class Connection(Connectable):
         operations in a non-transactional state.
 
         """
+        if self.closed:
+            raise exceptions.InvalidRequestError("This Connection is closed")
 
         if self.__connection.is_valid:
             self.__connection.invalidate(exception)