Select one single value of the given key. :param byte|str key: the key :rtype: byte|str|None :return: a single value for that key or None if the key does not exist
(self, key)
| 684 | } |
| 685 | |
| 686 | def one(self, key): |
| 687 | """ |
| 688 | Select one single value of the given key. |
| 689 | |
| 690 | :param byte|str key: the key |
| 691 | :rtype: byte|str|None |
| 692 | :return: a single value for that key or None if the key does not exist |
| 693 | """ |
| 694 | rows = self._session.execute(self._stmt_get_one, (self._key_encoder(key),)) |
| 695 | if rows: |
| 696 | row = next(iter(rows)) |
| 697 | return self._val_decoder(row.value) |
| 698 | return None |
| 699 | |
| 700 | |
| 701 | class CassandraStorage(object): |