Method contains_mapper

lib/sqlalchemy/orm/path_registry.py:272–278

(self, mapper: Mapper[Any])

            yield odd_path[i], even_path[i + 1]

    def contains_mapper(self, mapper: Mapper[Any]) -> bool:
        _m_path = cast(_OddPathRepresentation, self.path)
        for path_mapper in [_m_path[i] for i in range(0, len(_m_path), 2)]:
            if path_mapper.mapper.isa(mapper):
                return True
        else:
            return False

    def contains(self, attributes: Dict[Any, Any], key: Any) -> bool:
        return (key, self.path) in attributes