diff options
Diffstat (limited to 'lib/sqlalchemy')
| -rw-r--r-- | lib/sqlalchemy/types.py | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/sqlalchemy/types.py b/lib/sqlalchemy/types.py index 1dcf379a9..f9320cf3e 100644 --- a/lib/sqlalchemy/types.py +++ b/lib/sqlalchemy/types.py @@ -427,7 +427,7 @@ class TypeDecorator(TypeEngine): """ adapted = dialect.type_descriptor(self) - if adapted is not self: + if type(adapted) is not type(self): return adapted elif isinstance(self.impl, TypeDecorator): return self.impl.type_engine(dialect) @@ -1785,7 +1785,11 @@ class Interval(_DateAffinity, TypeDecorator): if self.native and hasattr(cls, '_adapt_from_generic_interval'): return cls._adapt_from_generic_interval(self, **kw) else: - return cls(**kw) + return self.__class__( + native=self.native, + second_precision=self.second_precision, + day_precision=self.day_precision, + **kw) def bind_processor(self, dialect): impl_processor = self.impl.bind_processor(dialect) |