Method presort_saves

lib/sqlalchemy/orm/dependency.py:770–789

(self, uowcommit, states)

                            uowcommit.register_object(st_, isdelete=True)

    def presort_saves(self, uowcommit, states):
        for state in states:
            uowcommit.register_object(state, operation="add", prop=self.prop)
            if self.cascade.delete_orphan:
                history = uowcommit.get_attribute_history(
                    state, self.key, self._passive_delete_flag
                )
                if history:
                    for child in history.deleted:
                        if self.hasparent(child) is False:
                            uowcommit.register_object(
                                child,
                                isdelete=True,
                                operation="delete",
                                prop=self.prop,
                            )

                            t = self.mapper.cascade_iterator("delete", child)
                            for c, m, st_, dct_ in t:
                                uowcommit.register_object(st_, isdelete=True)

    def process_deletes(self, uowcommit, states):
        if (