public function project(Snapshot $fromSnapshot = null)
{
if ($fromSnapshot instanceof Snapshot && $fromSnapshot->projectorSignature() === $this->signature()) {
$this->projection = $fromSnapshot->data();
$this->lastIndex = $fromSnapshot->index();
}
$eventSources = [];
foreach ($this->streams as $streamId) {
$stream = new Stream(Stream\Id::fromString((string) $streamId));
$eventSources = array_merge($eventSources, $this->eventStore->fetchEvents($stream));
}
$events = $this->removeProjectedEvents($this->sortEvents($this->filterEventsBasedOnSpecification($eventSources)));
// Apply event on projection
foreach ($events as $event) {
$this->applyEventOnProjection($event);
}
return $this->projection();
}
<?php use PhpInPractice\EventStore\EventStore; use PhpInPractice\EventStore\Storage\InMemory; use PhpInPractice\EventStore\Stream; use PhpInPractice\EventStore\Stream\Event; require_once __DIR__ . '/../vendor/autoload.php'; $eventStore = new EventStore(new InMemory()); $stream = new Stream(Stream\Id::generate()); $eventStore->persist($stream, [new Event(Event\Id::generate(), new Event\Payload())]); $eventStore->persist($stream, [new Event(Event\Id::generate(), new Event\Payload())]); $events = $eventStore->fetchEvents($stream); var_export($events);
