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<?php declare(strict_types=1); |
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/** |
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* This file is part of the daikon-cqrs/boot project. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Daikon\Boot\ReadModel; |
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use Daikon\EventSourcing\Aggregate\Event\DomainEventInterface; |
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use Daikon\EventSourcing\EventStore\Commit\CommitInterface; |
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use Daikon\Interop\Assertion; |
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use Daikon\MessageBus\EnvelopeInterface; |
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use Daikon\ReadModel\Projection\ProjectionInterface; |
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use Daikon\ReadModel\Projector\ProjectorInterface; |
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use Daikon\ReadModel\Repository\RepositoryInterface; |
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final class StandardProjector implements ProjectorInterface |
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{ |
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private RepositoryInterface $repository; |
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public function __construct(RepositoryInterface $repository) |
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{ |
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$this->repository = $repository; |
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} |
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public function handle(EnvelopeInterface $envelope): void |
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{ |
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/** @var CommitInterface $commit */ |
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$commit = $envelope->getMessage(); |
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Assertion::implementsInterface($commit, CommitInterface::class); |
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if ($commit->getSequence()->isInitial()) { |
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$projection = $this->repository->makeProjection(); |
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} else { |
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$aggregateId = (string)$commit->getAggregateId(); |
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$projection = $this->repository->findById($aggregateId)->getFirst(); |
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} |
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Assertion::implementsInterface($projection, ProjectionInterface::class); |
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/** |
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* @var ProjectionInterface $projection |
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* @var DomainEventInterface $event |
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*/ |
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foreach ($commit->getEventLog() as $event) { |
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$projection = $projection->applyEvent($event); |
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} |
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$this->repository->persist($projection); |
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} |
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} |
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daikon-cqrs /
boot
