wikimedia/mediawiki-extensions-Wikibase

<?php declare( strict_types=1 );

namespace Wikibase\Repo\RestApi\Infrastructure\DataAccess;

use Wikibase\DataModel\Statement\StatementGuid;
use Wikibase\Repo\RestApi\Domain\Model\EditMetadata;
use Wikibase\Repo\RestApi\Domain\Services\StatementRemover;
use Wikibase\Repo\RestApi\Infrastructure\DataAccess\Exceptions\EntityUpdateFailed;
use Wikibase\Repo\RestApi\Infrastructure\DataAccess\Exceptions\StatementSubjectDisappeared;

/**
 * @license GPL-2.0-or-later
 */
class EntityUpdaterStatementRemover implements StatementRemover {

    private StatementSubjectRetriever $statementSubjectRetriever;
    private EntityUpdater $entityUpdater;

    public function __construct( StatementSubjectRetriever $statementSubjectRetriever, EntityUpdater $entityUpdater ) {
        $this->statementSubjectRetriever = $statementSubjectRetriever;
        $this->entityUpdater = $entityUpdater;
    }

    /**
     * @throws StatementSubjectDisappeared
     * @throws EntityUpdateFailed
     */
    public function remove( StatementGuid $statementGuid, EditMetadata $editMetadata ): void {

        $subject = $this->statementSubjectRetriever->getStatementSubject( $statementGuid->getEntityId() );

        // if $subject is null, then it went missing between the use case
        // subject assertion and invoking the statement remover by the use case
        if ( $subject === null ) {
            throw new StatementSubjectDisappeared();
        }

        $subject->getStatements()->removeStatementsWithGuid( (string)$statementGuid );

        $this->entityUpdater->update( $subject, $editMetadata );
    }

}