From a590e5db8aece17e93371bca290d2e205528e34c Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Sat, 18 Dec 2010 13:05:20 -0500
Subject: [PATCH] trivial inlinings

---
 lib/sqlalchemy/orm/properties.py | 3 +--
 lib/sqlalchemy/orm/session.py    | 1 +
 lib/sqlalchemy/orm/unitofwork.py | 9 ++++-----
 3 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/lib/sqlalchemy/orm/properties.py b/lib/sqlalchemy/orm/properties.py
index 1b144ea74e..da6d309e02 100644
--- a/lib/sqlalchemy/orm/properties.py
+++ b/lib/sqlalchemy/orm/properties.py
@@ -821,8 +821,7 @@ class RelationshipProperty(StrategizedProperty):
                         dest_dict, obj, None)
 
     def cascade_iterator(self, type_, state, dict_, visited_states, halt_on=None):
-        if not type_ in self.cascade:
-            return
+        #assert type_ in self.cascade
 
         # only actively lazy load on the 'delete' cascade
         if type_ != 'delete' or self.passive_deletes:
diff --git a/lib/sqlalchemy/orm/session.py b/lib/sqlalchemy/orm/session.py
index ba1a38bb9f..a3714bc7e6 100644
--- a/lib/sqlalchemy/orm/session.py
+++ b/lib/sqlalchemy/orm/session.py
@@ -1136,6 +1136,7 @@ class Session(object):
 
         # grab the cascades before adding the item to the deleted list
         # so that autoflush does not delete the item
+        # the strong reference to the instance itself is significant here
         cascade_states = list(_cascade_state_iterator('delete', state))
 
         self._deleted[state] = state.obj()
diff --git a/lib/sqlalchemy/orm/unitofwork.py b/lib/sqlalchemy/orm/unitofwork.py
index 17b73e5f98..ba43b13592 100644
--- a/lib/sqlalchemy/orm/unitofwork.py
+++ b/lib/sqlalchemy/orm/unitofwork.py
@@ -16,7 +16,6 @@ from sqlalchemy import util
 from sqlalchemy.util import topological
 from sqlalchemy.orm import attributes, interfaces
 from sqlalchemy.orm import util as mapperutil
-from sqlalchemy.orm.util import _state_mapper
 session = util.importlater("sqlalchemy.orm", "session")
 
 class UOWEventHandler(interfaces.AttributeExtension):
@@ -37,7 +36,7 @@ class UOWEventHandler(interfaces.AttributeExtension):
 
         sess = session._state_session(state)
         if sess:
-            prop = _state_mapper(state)._props[self.key]
+            prop = state.manager.mapper._props[self.key]
             item_state = attributes.instance_state(item)
             if prop.cascade.save_update and \
                 (prop.cascade_backrefs or self.key == initiator.key) and \
@@ -48,7 +47,7 @@ class UOWEventHandler(interfaces.AttributeExtension):
     def remove(self, state, item, initiator):
         sess = session._state_session(state)
         if sess:
-            prop = _state_mapper(state)._props[self.key]
+            prop = state.manager.mapper._props[self.key]
             # expunge pending orphans
             item_state = attributes.instance_state(item)
             if prop.cascade.delete_orphan and \
@@ -64,7 +63,7 @@ class UOWEventHandler(interfaces.AttributeExtension):
 
         sess = session._state_session(state)
         if sess:
-            prop = _state_mapper(state)._props[self.key]
+            prop = state.manager.mapper._props[self.key]
             if newvalue is not None:
                 newvalue_state = attributes.instance_state(newvalue)
                 if prop.cascade.save_update and \
@@ -204,7 +203,7 @@ class UOWTransaction(object):
             return False
 
         if state not in self.states:
-            mapper = _state_mapper(state)
+            mapper = state.manager.mapper
             
             if mapper not in self.mappers:
                 mapper._per_mapper_flush_actions(self)
-- 
2.47.2