Method _clone

pymongo/synchronous/cursor.py:261–301

Internal clone helper.

(self, deepcopy: bool = True, base: Optional[Cursor] = None)

        return self._clone(True)

    def _clone(self, deepcopy: bool = True, base: Optional[Cursor] = None) -> Cursor:  # type: ignore[type-arg]
        """Internal clone helper."""
        if not base:
            if self._session and not self._session._implicit:
                base = self._clone_base(self._session)
            else:
                base = self._clone_base(None)

        values_to_clone = (
            "spec",
            "projection",
            "skip",
            "limit",
            "max_time_ms",
            "max_await_time_ms",
            "comment",
            "max",
            "min",
            "ordering",
            "explain",
            "hint",
            "batch_size",
            "max_scan",
            "query_flags",
            "collation",
            "empty",
            "show_record_id",
            "return_key",
            "allow_disk_use",
            "snapshot",
            "exhaust",
            "has_filter",
            "cursor_type",
        )
        data = {
            k: v for k, v in self.__dict__.items() if k.startswith("_") and k[1:] in values_to_clone
        }
        if deepcopy:
            data = self._deepcopy(data)
        base.__dict__.update(data)
        return base

    def _clone_base(self, session: Optional[ClientSession]) -> Cursor:  # type: ignore[type-arg]
        """Creates an empty Cursor object for information to be copied into."""