Fixed #9307 -- Added the ability to pickle the Query class used by the Oracle

backend.

This allows Querysets to be cached for Oracle and should provide a model for
adding pickling support to other (external) database backends that need a
custom Query class.

Thanks to Justin Bronn for some assistance with this patch.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@9272 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/models/sql/query.py

@@ -27,9 +27,9 @@ try:
 except NameError:
     from sets import Set as set     # Python 2.3 fallback
 
-__all__ = ['Query']
+__all__ = ['Query', 'BaseQuery']
 
-class Query(object):
+class BaseQuery(object):
     """
     A single SQL query.
     """
@@ -1757,7 +1757,9 @@ class Query(object):
 # Use the backend's custom Query class if it defines one. Otherwise, use the
 # default.
 if connection.features.uses_custom_query_class:
-    Query = connection.ops.query_class(Query)
+    Query = connection.ops.query_class(BaseQuery)
+else:
+    Query = BaseQuery
 
 def get_order_dir(field, default='ASC'):
     """