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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2015-04-17 16:06:04 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2015-04-17 16:06:04 -0400 |
| commit | d349ad448c020d9c4ac976c048500d2cee51ab6d (patch) | |
| tree | c35707e4e9b25c546468a418c0589a764a3495ba /lib/sqlalchemy/orm/util.py | |
| parent | 9f468e305d0a6b42a1d384a70dcf8fb51effa693 (diff) | |
| download | sqlalchemy-d349ad448c020d9c4ac976c048500d2cee51ab6d.tar.gz | |
- Fixed a critical regression caused by :ticket:`3061` where the
NEVER_SET symbol could easily leak into a lazyload query, subsequent
to the flush of a pending object. This would occur typically
for a many-to-one relationship that does not use a simple
"get" strategy. The good news is that the fix improves efficiency
vs. 0.9, because we can now skip the SELECT statement entirely
when we detect NEVER_SET symbols present in the parameters; prior to
:ticket:`3061`, we couldn't discern if the None here were set or not.
fixes #3368
Diffstat (limited to 'lib/sqlalchemy/orm/util.py')
| -rw-r--r-- | lib/sqlalchemy/orm/util.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/util.py b/lib/sqlalchemy/orm/util.py index b3f3bc5fa..b9098c77c 100644 --- a/lib/sqlalchemy/orm/util.py +++ b/lib/sqlalchemy/orm/util.py @@ -13,7 +13,7 @@ from . import attributes import re from .base import instance_str, state_str, state_class_str, attribute_str, \ - state_attribute_str, object_mapper, object_state, _none_set + state_attribute_str, object_mapper, object_state, _none_set, _never_set from .base import class_mapper, _class_to_mapper from .base import InspectionAttr from .path_registry import PathRegistry |