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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\WikispeechSpeechDataCollector\Crud\Transaction; |
| 4 | |
| 5 | /** |
| 6 | * @file |
| 7 | * @ingroup Extensions |
| 8 | * @license GPL-2.0-or-later |
| 9 | */ |
| 10 | |
| 11 | use MediaWiki\WikispeechSpeechDataCollector\Crud\Clud; |
| 12 | use MediaWiki\WikispeechSpeechDataCollector\Crud\CrudContext; |
| 13 | use MediaWiki\WikispeechSpeechDataCollector\Crud\CrudFactory; |
| 14 | use MediaWiki\WikispeechSpeechDataCollector\Crud\PersistentRootGraphLoader; |
| 15 | |
| 16 | /** |
| 17 | * @todo This is part of an internal development API. It should be removed before deployment. |
| 18 | * |
| 19 | * A facade against {@link Clud} to access and modify a set of |
| 20 | * {@link Persistent} objects. |
| 21 | * |
| 22 | * The name <b>transaction</b> might be a bit misleading, |
| 23 | * as this is not an ACID transaction with rollback on errors etc. |
| 24 | * If your execution fails halfway through, the parts executed |
| 25 | * will have been committed. |
| 26 | * |
| 27 | * Consider single object (atomic) calls in case you are uncertain |
| 28 | * about the validity of the object you pass to the executor. |
| 29 | * |
| 30 | * @since 0.1.0 |
| 31 | */ |
| 32 | class CrudTransactionExecutor { |
| 33 | |
| 34 | /** @var CrudContext */ |
| 35 | private $context; |
| 36 | |
| 37 | /** @var Clud */ |
| 38 | private $clud; |
| 39 | |
| 40 | /** |
| 41 | * @param CrudContext $context |
| 42 | * @since 0.1.0 |
| 43 | */ |
| 44 | public function __construct( CrudContext $context ) { |
| 45 | $this->context = $context; |
| 46 | $this->clud = new Clud( new CrudFactory( $context ) ); |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * @param CrudTransactionRequest $request |
| 51 | * @return CrudTransactionResponse |
| 52 | * @throws CrudTransactionException |
| 53 | * @since 0.1.0 |
| 54 | */ |
| 55 | public function execute( |
| 56 | CrudTransactionRequest $request |
| 57 | ): CrudTransactionResponse { |
| 58 | $response = new CrudTransactionResponse(); |
| 59 | $response->setReference( $request->getReference() ); |
| 60 | |
| 61 | if ( $request->getCreate() ) { |
| 62 | foreach ( $request->getCreate() as $instance ) { |
| 63 | $this->clud->create( $instance ); |
| 64 | $response->addCreated( $instance ); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | if ( $request->getRead() ) { |
| 69 | foreach ( $request->getRead() as $instance ) { |
| 70 | if ( $this->clud->load( $instance ) ) { |
| 71 | $response->addRead( $instance ); |
| 72 | } else { |
| 73 | throw new CrudTransactionException( "Unable to read $instance" ); |
| 74 | } |
| 75 | } |
| 76 | if ( $request->isReadGraph() ) { |
| 77 | $graphLoader = new PersistentRootGraphLoader( $this->context ); |
| 78 | foreach ( $response->getRead() as $instance ) { |
| 79 | $instance->accept( $graphLoader ); |
| 80 | } |
| 81 | $graphLoader->getLoadedInstances()->removeAll( $response->getRead() ); |
| 82 | foreach ( $graphLoader->getLoadedInstances()->toArray() as $instance ) { |
| 83 | $response->addRead( $instance ); |
| 84 | } |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | if ( $request->getUpdate() ) { |
| 89 | foreach ( $request->getUpdate() as $instance ) { |
| 90 | $this->clud->update( $instance ); |
| 91 | $response->addUpdated( $instance ); |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | if ( $request->getDelete() ) { |
| 96 | foreach ( $request->getDelete() as $instance ) { |
| 97 | $this->clud->delete( $instance ); |
| 98 | $response->addDeleted( $instance ); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | return $response; |
| 103 | } |
| 104 | } |