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Diffstat (limited to 'lib/sqlalchemy/orm/instrumentation.py')
| -rw-r--r-- | lib/sqlalchemy/orm/instrumentation.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/instrumentation.py b/lib/sqlalchemy/orm/instrumentation.py index ee0cc0600..61184ee0a 100644 --- a/lib/sqlalchemy/orm/instrumentation.py +++ b/lib/sqlalchemy/orm/instrumentation.py @@ -123,6 +123,10 @@ class ClassManager(dict): ] ) + @_memoized_key_collection + def _loader_impls(self): + return frozenset([attr.impl for attr in self.values()]) + @util.memoized_property def mapper(self): # raises unless self.mapper has been assigned |