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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace LambdaTwelve\OneRecord\Server\Spi; |
| 6 | |
| 7 | use DateTimeImmutable; |
| 8 | use LambdaTwelve\OneRecord\Model\LogisticsObject; |
| 9 | use LambdaTwelve\OneRecord\Rdf\Iri; |
| 10 | |
| 11 | /** |
| 12 | * Where logistics objects and their revisions live. Narrow on purpose so a |
| 13 | * relational implementation (one row per revision, the graph as JSON-LD) is |
| 14 | * straightforward, and transactional where it matters: saving revision N |
| 15 | * must fail if the current revision is not N-1. |
| 16 | */ |
| 17 | interface LogisticsObjectStore |
| 18 | { |
| 19 | public function latest(Iri $iri): ?StoredObject; |
| 20 | |
| 21 | public function revision(Iri $iri, int $revision): ?StoredObject; |
| 22 | |
| 23 | /** |
| 24 | * The revision that was current at $at (the spec's ?at= query), or null |
| 25 | * if the object did not exist yet. |
| 26 | */ |
| 27 | public function at(Iri $iri, DateTimeImmutable $at): ?StoredObject; |
| 28 | |
| 29 | public function exists(Iri $iri): bool; |
| 30 | |
| 31 | /** |
| 32 | * Revision 1. |
| 33 | * |
| 34 | * @throws StoreException ALREADY_EXISTS |
| 35 | */ |
| 36 | public function create(LogisticsObject $object, DateTimeImmutable $at): StoredObject; |
| 37 | |
| 38 | /** |
| 39 | * Revision $expectedCurrent + 1, only if $expectedCurrent is still current. |
| 40 | * |
| 41 | * @throws StoreException REVISION_CONFLICT, NOT_FOUND |
| 42 | */ |
| 43 | public function saveRevision(LogisticsObject $object, int $expectedCurrent, DateTimeImmutable $at): StoredObject; |
| 44 | |
| 45 | /** |
| 46 | * Removes every revision: the host's data-protection erasure. The API has |
| 47 | * no delete; this is for the host, after it has closed access. |
| 48 | */ |
| 49 | public function erase(Iri $iri): void; |
| 50 | } |