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-rw-r--r--lib/sqlalchemy/attributes.py14
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/sqlalchemy/attributes.py b/lib/sqlalchemy/attributes.py
index ed5da3284..2cc617612 100644
--- a/lib/sqlalchemy/attributes.py
+++ b/lib/sqlalchemy/attributes.py
@@ -374,7 +374,21 @@ class AttributeManager(object):
class_._attribute_manager = self
return attr
+ def reset_class_managed(self, class_):
+ try:
+ attr = getattr(class_, '_class_managed_attributes')
+ for key in attr.keys():
+ delattr(class_, key)
+ delattr(class_, '_class_managed_attributes')
+ except AttributeError:
+ pass
+ def is_class_managed(self, class_, key):
+ try:
+ return class_._class_managed_attributes.has_key(key)
+ except AttributeError:
+ return False
+
def create_history_container(self, obj, key, uselist, callable_ = None, **kwargs):
"""creates a new history container for the given attribute on the given object."""
if callable_ is not None: