def _long_query_encoded(self):
        """
        Returns the (uri_part, post_data_part) for a long query.
        """
        uristr = self._encode(omit_keys=True)
        kstr = "{}"

        klist = self._real_options.get('keys', UNSPEC)
        if klist != UNSPEC:
            kstr = '{{"keys":{0}}}'.format(klist)

        return (uristr, kstr)