Chain another RelationshipCache option to this one. While many RelationshipCache objects can be specified on a single Query separately, chaining them together allows for a more efficient lookup during load.
(self, option)
| 203 | return relationship_option |
| 204 | |
| 205 | def and_(self, option): |
| 206 | """Chain another RelationshipCache option to this one. |
| 207 | |
| 208 | While many RelationshipCache objects can be specified on a single |
| 209 | Query separately, chaining them together allows for a more efficient |
| 210 | lookup during load. |
| 211 | |
| 212 | """ |
| 213 | self._relationship_options.update(option._relationship_options) |
| 214 | return self |