Method _is_orphan

lib/sqlalchemy/orm/mapper.py:2500–2518

(self, state: InstanceState[_O])

        )

    def _is_orphan(self, state: InstanceState[_O]) -> bool:
        orphan_possible = False
        for mapper in self.iterate_to_root():
            for key, cls in mapper._delete_orphans:
                orphan_possible = True

                has_parent = attributes.manager_of_class(cls).has_parent(
                    state, key, optimistic=state.has_identity
                )

                if self.legacy_is_orphan and has_parent:
                    return False
                elif not self.legacy_is_orphan and not has_parent:
                    return True

        if self.legacy_is_orphan:
            return orphan_possible
        else:
            return False

    def has_property(self, key: str) -> bool:
        return key in self._props