sqlalchemy.orm.mapped_collection._SerializableColumnGetterV2

class documentation

class _SerializableColumnGetterV2(_PlainColumnGetter[_KT]): (source)

Updated serializable getter which deals with multi-table mapped classes. Two extremely unusual cases are not supported. Mappings which have tables across multiple metadata objects, or which are mapped to non-Table selectables linked across inheriting mappers may fail to function here.

Method	`__init__`	Undocumented
Method	`__reduce__`	Undocumented
Class Variable	`__slots__`	Undocumented
Instance Variable	`colkeys`	Undocumented
Instance Variable	`composite`	Undocumented
Class Method	`_reduce_from_cols`	Undocumented
Method	`_cols`	Undocumented

Inherited from _PlainColumnGetter:

Method	`__call__`	Undocumented
Instance Variable	`cols`	Undocumented

def __init__(self, colkeys: Sequence[Tuple[Optional[str], Optional[str]]]): (source) ¶

overrides sqlalchemy.orm.mapped_collection._PlainColumnGetter.__init__

Undocumented

def __reduce__(self) -> Tuple[Type[_SerializableColumnGetterV2[_KT]], Tuple[Sequence[Tuple[Optional[str], Optional[str]]]]]: (source) ¶

overrides sqlalchemy.orm.mapped_collection._PlainColumnGetter.__reduce__

Undocumented

__slots__: tuple[str, ...] = (source) ¶

overrides sqlalchemy.orm.mapped_collection._PlainColumnGetter.__slots__

Undocumented

colkeys = (source) ¶

Undocumented

composite = (source) ¶

overrides sqlalchemy.orm.mapped_collection._PlainColumnGetter.composite

Undocumented

@classmethod
def _reduce_from_cols(cls, cols: Sequence[ColumnElement[_KT]]) -> Tuple[Type[_SerializableColumnGetterV2[_KT]], Tuple[Sequence[Tuple[Optional[str], Optional[str]]]]]: (source) ¶

Undocumented

def _cols(self, mapper: Mapper[_KT]) -> Sequence[ColumnElement[_KT]]: (source) ¶

overrides sqlalchemy.orm.mapped_collection._PlainColumnGetter._cols

Undocumented