Method __init__

lib/sqlalchemy/orm/util.py:695–751

(
        self,
        mapped_class_or_ac: _EntityType[_O],
        alias: Optional[FromClause] = None,
        name: Optional[str] = None,
        flat: bool = False,
        adapt_on_names: bool = False,
        with_polymorphic_mappers: Optional[Sequence[Mapper[Any]]] = None,
        with_polymorphic_discriminator: Optional[ColumnElement[Any]] = None,
        base_alias: Optional[AliasedInsp[Any]] = None,
        use_mapper_path: bool = False,
        represents_outer_join: bool = False,
    )

    __name__: str

    def __init__(
        self,
        mapped_class_or_ac: _EntityType[_O],
        alias: Optional[FromClause] = None,
        name: Optional[str] = None,
        flat: bool = False,
        adapt_on_names: bool = False,
        with_polymorphic_mappers: Optional[Sequence[Mapper[Any]]] = None,
        with_polymorphic_discriminator: Optional[ColumnElement[Any]] = None,
        base_alias: Optional[AliasedInsp[Any]] = None,
        use_mapper_path: bool = False,
        represents_outer_join: bool = False,
    ):
        insp = cast(
            "_InternalEntityType[_O]", inspection.inspect(mapped_class_or_ac)
        )
        mapper = insp.mapper

        nest_adapters = False

        if alias is None:
            if insp.is_aliased_class and insp.selectable._is_subquery:
                alias = insp.selectable.alias()
            else:
                alias = (
                    mapper._with_polymorphic_selectable._anonymous_fromclause(
                        name=name,
                        flat=flat,
                    )
                )
        elif insp.is_aliased_class:
            nest_adapters = True

        assert alias is not None
        self._aliased_insp = AliasedInsp(
            self,
            insp,
            alias,
            name,
            (
                with_polymorphic_mappers
                if with_polymorphic_mappers
                else mapper.with_polymorphic_mappers
            ),
            (
                with_polymorphic_discriminator
                if with_polymorphic_discriminator is not None
                else mapper.polymorphic_on
            ),
            base_alias,
            use_mapper_path,
            adapt_on_names,
            represents_outer_join,
            nest_adapters,
        )

        self.__name__ = f"aliased({mapper.class_.__name__})"