From 25e7dc60dfa739692421a9576c83f2db29f73cb2 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Mon, 10 May 2010 11:37:48 -0400
Subject: - the _make_proxy() method of ColumnClause and Column now use
 self.__class__ to determine the class of object to be returned instead of
 hardcoding to ColumnClause/Column, making it slightly easier to produce
 specific subclasses of these which work in alias/subquery situations.

---
 lib/sqlalchemy/sql/util.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/sqlalchemy/sql/util.py')

diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py
index b81906396..e4ebe9538 100644
--- a/lib/sqlalchemy/sql/util.py
+++ b/lib/sqlalchemy/sql/util.py
@@ -265,6 +265,10 @@ class Annotated(object):
     
     def _deannotate(self):
         return self.__element
+
+    @property
+    def _constructor(self):
+        return self.__element.__class__
         
     def _clone(self):
         clone = self.__element._clone()
-- 
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