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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\WikispeechSpeechDataCollector\Crud\Mcr; |
| 4 | |
| 5 | /** |
| 6 | * @file |
| 7 | * @ingroup Extensions |
| 8 | * @license GPL-2.0-or-later |
| 9 | */ |
| 10 | |
| 11 | use ExternalStoreException; |
| 12 | use MediaWiki\WikispeechSpeechDataCollector\Domain\Persistent; |
| 13 | |
| 14 | /** |
| 15 | * CRUD for composite association owner objects. |
| 16 | * |
| 17 | * These are objects that create their own unique identity. Compare to composite part objects |
| 18 | * that inherit the identity of the composite owner object they are related to. |
| 19 | * |
| 20 | * A composite part object can not exist without the composite owner. |
| 21 | * |
| 22 | * E.g, {@link Recording} would be a composite owner object, |
| 23 | * while {@link RecordingAnnotations} is a composite part object |
| 24 | * that depends on an existing Recording in order to be created. |
| 25 | * |
| 26 | * @see AbstractCompositePartMcrCrud |
| 27 | * @since 0.1.0 |
| 28 | */ |
| 29 | abstract class AbstractCompositeOwnerMcrCrud extends AbstractMcrCrud { |
| 30 | |
| 31 | /** |
| 32 | * Asserts that identity is not set and that the page does not exist. |
| 33 | * |
| 34 | * @param Persistent $instance |
| 35 | * @throws ExternalStoreException |
| 36 | */ |
| 37 | public function create( Persistent $instance ): void { |
| 38 | if ( $instance->getIdentity() ) { |
| 39 | throw new ExternalStoreException( 'Identity already set' ); |
| 40 | } |
| 41 | $this->getIdentityStrategy()->identityFactory( $instance ); |
| 42 | $page = $this->getIdentityStrategy()->getWikiPage( |
| 43 | $instance->getIdentity(), |
| 44 | $this->getContext() |
| 45 | ); |
| 46 | if ( $page->exists() ) { |
| 47 | // todo consider, |
| 48 | // this probably means that we came up with an identity that was not unique. |
| 49 | // should we rather just try again with a new identity? |
| 50 | throw new ExternalStoreException( 'Page already exists' ); |
| 51 | } |
| 52 | parent::create( $instance ); |
| 53 | } |
| 54 | |
| 55 | } |