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<?php namespace SmoothPhp\EventSourcing; |
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use SmoothPhp\Contracts\EventSourcing\Event; |
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use SmoothPhp\Contracts\EventSourcing\AggregateRoot as AggregateRootContract; |
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/** |
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* Abstract class Entity |
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* |
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* @author jrdn hannah <[email protected]> |
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*/ |
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abstract class Entity implements \SmoothPhp\Contracts\EventSourcing\Entity |
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{ |
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/** @var AggregateRootContract */ |
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private $aggregateRoot; |
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/** |
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* @param Event $event |
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* @throws Exception\AggregateRootAlreadyRegistered |
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*/ |
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public function handleRecursively(Event $event) |
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{ |
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$this->handle($event); |
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foreach ($this->getChildren() as $entity) { |
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$entity->registerAggregateRoot($this->aggregateRoot); |
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$entity->handleRecursively($event); |
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} |
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} |
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/** |
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* @param AggregateRootContract $aggregateRoot |
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* @throws Exception\AggregateRootAlreadyRegistered |
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*/ |
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public function registerAggregateRoot(AggregateRootContract $aggregateRoot) |
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{ |
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if (null !== $this->aggregateRoot && $this->aggregateRoot !== $aggregateRoot) { |
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throw new Exception\AggregateRootAlreadyRegistered; |
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} |
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$this->aggregateRoot = $aggregateRoot; |
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} |
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/** |
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* @return \SmoothPhp\Contracts\EventSourcing\Entity[] $entity |
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*/ |
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public function getChildren() |
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{ |
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return []; |
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} |
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/** |
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* @param Event $event |
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* @throws Exception\NoAggregateRootRegistered |
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*/ |
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protected function apply(Event $event) |
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{ |
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if (!$this->aggregateRoot) { |
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throw new Exception\NoAggregateRootRegistered; |
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} |
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$this->aggregateRoot->apply($event); |
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} |
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/** |
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* Handles event if capable. |
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* |
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* @param $event |
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*/ |
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View Code Duplication |
protected function handle(Event $event) |
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{ |
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$method = $this->getApplyMethod($event); |
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if (!method_exists($this, $method)) { |
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return; |
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} |
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$this->$method($event); |
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} |
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/** |
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* @param Event $event |
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* @return string |
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*/ |
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private function getApplyMethod(Event $event) |
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{ |
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$classParts = explode('\\', get_class($event)); |
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return 'apply' . end($classParts); |
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} |
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} |
SmoothPhp /
CQRS-ES-Framework
