| 1: | <?php declare(strict_types=1); |
| 2: | |
| 3: | namespace Salient\Contract\Sync; |
| 4: | |
| 5: | /** |
| 6: | * Policies for deferral of sync entities and relationships |
| 7: | */ |
| 8: | interface DeferralPolicy |
| 9: | { |
| 10: | /** |
| 11: | * Do not resolve deferred entities or relationships |
| 12: | * |
| 13: | * If {@see SyncStoreInterface::resolveDeferrals()} is not called manually, |
| 14: | * unresolved {@see DeferredEntityInterface} and |
| 15: | * {@see DeferredRelationshipInterface} instances may appear in object |
| 16: | * graphs returned by sync operations. |
| 17: | */ |
| 18: | public const DO_NOT_RESOLVE = 0; |
| 19: | |
| 20: | /** |
| 21: | * Resolve deferred entities and relationships immediately |
| 22: | * |
| 23: | * This is the least efficient policy because it produces the most round |
| 24: | * trips, but it does guarantee the return of fully resolved object graphs. |
| 25: | */ |
| 26: | public const RESOLVE_EARLY = 1; |
| 27: | |
| 28: | /** |
| 29: | * Resolve deferred entities and relationships after reaching the end of |
| 30: | * each stream of entity data |
| 31: | * |
| 32: | * This policy minimises the number of round trips to the backend, but |
| 33: | * unresolved {@see DeferredEntityInterface} and |
| 34: | * {@see DeferredRelationshipInterface} instances may appear in object |
| 35: | * graphs until they have been fully traversed. |
| 36: | */ |
| 37: | public const RESOLVE_LATE = 2; |
| 38: | } |
| 39: |