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<?php |
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/** |
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* This file is part of slick/cqrs-tools |
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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 Slick\CQRSTools\Application\Projection; |
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use League\Event\EventInterface; |
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use Slick\CQRSTools\Application\Projection\ProjectionEventListener\ListenerEventStore; |
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use Slick\CQRSTools\Domain\Event\StoredEvent; |
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use Slick\CQRSTools\Domain\Projection\ProjectorStateLedger; |
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use Slick\CQRSTools\Event; |
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use Slick\CQRSTools\Event\AbstractListener; |
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use Slick\CQRSTools\Event\EventListener; |
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/** |
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* ProjectionEventListener |
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* |
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* @package Slick\CQRSTools\Application\Projection |
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*/ |
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final class ProjectionEventListener extends AbstractListener implements EventListener |
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{ |
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/** |
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* @var ListenerEventStore |
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*/ |
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private $eventStore; |
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/** |
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* @var array |
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*/ |
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private $projectors; |
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/** |
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* @var EventHandlingStrategy |
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*/ |
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private $strategy; |
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/** |
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* @var ProjectorStateLedger |
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*/ |
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private $ledger; |
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/** |
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* @var Projectionist |
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*/ |
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private $projectionist; |
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/** |
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* Creates a Projection Event Listener |
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* |
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* @param array $projectors |
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* @param EventHandlingStrategy $strategy |
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* @param ProjectorStateLedger $ledger |
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*/ |
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public function __construct(array $projectors, EventHandlingStrategy $strategy, ProjectorStateLedger $ledger) |
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{ |
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$this->projectors = $projectors; |
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$this->strategy = $strategy; |
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$this->ledger = $ledger; |
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$this->eventStore = new ListenerEventStore(); |
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$this->projectionist = new Projectionist($this->eventStore, $ledger, $strategy); |
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} |
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/** |
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* Handle an event. |
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* |
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* @param EventInterface|Event $event |
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* |
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* @return void |
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* @throws \Exception |
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*/ |
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public function handle(EventInterface $event) |
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{ |
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$this->eventStore->append(StoredEvent::createFromEvent($event)); |
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$this->projectionist->play($this->projectors); |
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} |
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} |
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slickframework /
cqrs-tools
