diff options
Diffstat (limited to 'lib/sqlalchemy')
| -rw-r--r-- | lib/sqlalchemy/sql/type_api.py | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/sqlalchemy/sql/type_api.py b/lib/sqlalchemy/sql/type_api.py index d3e0a008e..d414daf2a 100644 --- a/lib/sqlalchemy/sql/type_api.py +++ b/lib/sqlalchemy/sql/type_api.py @@ -630,9 +630,13 @@ class TypeDecorator(TypeEngine): @property def comparator_factory(self): - return type("TDComparator", - (TypeDecorator.Comparator, self.impl.comparator_factory), - {}) + if TypeDecorator.Comparator in self.impl.comparator_factory.__mro__: + return self.impl.comparator_factory + else: + return type("TDComparator", + (TypeDecorator.Comparator, + self.impl.comparator_factory), + {}) def _gen_dialect_impl(self, dialect): """ |