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<?php |
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namespace Spatie\EventProjector; |
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use Illuminate\Support\Str; |
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use Spatie\EventProjector\Models\StoredEvent; |
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abstract class AggregateRoot |
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{ |
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/** @var string */ |
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private $aggregateUuid; |
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/** @var array */ |
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private $recordedEvents = []; |
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public static function retrieve(string $uuid): AggregateRoot |
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{ |
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$aggregateRoot = (new static()); |
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$aggregateRoot->aggregateUuid = $uuid; |
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return $aggregateRoot->reconstituteFromEvents(); |
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} |
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public function recordThat(ShouldBeStored $domainEvent): AggregateRoot |
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{ |
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$this->recordedEvents[] = $domainEvent; |
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$this->apply($domainEvent); |
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return $this; |
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} |
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public function persist(): AggregateRoot |
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{ |
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call_user_func( |
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[config('event-projector.stored_event_model'), 'storeMany'], |
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$this->getAndClearRecoredEvents(), |
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$this->aggregateUuid |
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); |
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return $this; |
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} |
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private function getAndClearRecoredEvents(): array |
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{ |
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$recordedEvents = $this->recordedEvents; |
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$this->recordedEvents = []; |
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return $recordedEvents; |
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} |
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private function reconstituteFromEvents(): AggregateRoot |
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{ |
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StoredEvent::uuid($this->aggregateUuid)->each(function (StoredEvent $storedEvent) { |
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$this->apply($storedEvent->event); |
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}); |
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return $this; |
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} |
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private function apply(ShouldBeStored $event): void |
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{ |
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$classBaseName = class_basename($event); |
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$camelCasedBaseName = ucfirst(Str::camel($classBaseName)); |
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$applyingMethodName = "apply{$camelCasedBaseName}"; |
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if (method_exists($this, $applyingMethodName)) { |
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$this->$applyingMethodName($event); |
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} |
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} |
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} |
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spatie /
laravel-event-projector
