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<?php |
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/** |
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* This file is part of the daikon-cqrs/cqrs 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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declare(strict_types=1); |
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namespace Daikon\EventSourcing\EventStore; |
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use Assert\Assertion; |
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use Daikon\Entity\ValueObject\ValueObjectInterface; |
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final class StreamRevision implements ValueObjectInterface |
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{ |
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private const INITIAL = 1; |
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private const NONE = 0; |
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/** @var int */ |
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private $revision; |
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public static function fromNative($revision): ValueObjectInterface |
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{ |
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return new self($revision); |
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} |
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public static function makeEmpty(): ValueObjectInterface |
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{ |
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return new static(self::NONE); |
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} |
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public function toNative(): int |
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{ |
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return $this->revision; |
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} |
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public function increment(): StreamRevision |
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{ |
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$copy = clone $this; |
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$copy->revision++; |
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return $copy; |
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} |
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public function decrement(): StreamRevision |
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{ |
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$copy = clone $this; |
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$copy->revision--; |
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return $copy; |
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} |
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public function equals(ValueObjectInterface $otherValue): bool |
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{ |
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Assertion::isInstanceOf($otherValue, static::class); |
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return $otherValue->toNative() === $this->revision; |
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} |
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public function isEmpty(): bool |
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{ |
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return $this->revision === self::NONE; |
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} |
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public function isInitial(): bool |
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{ |
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return $this->revision === self::INITIAL; |
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} |
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public function isWithinRange(StreamRevision $from, StreamRevision $to) |
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{ |
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return $this->isGreaterThanOrEqual($from) && $this->isLessThanOrEqual($to); |
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} |
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public function isGreaterThanOrEqual(StreamRevision $revision) |
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{ |
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return $this->revision >= $revision->toNative(); |
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} |
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public function isLessThanOrEqual(StreamRevision $revision) |
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{ |
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return $this->revision <= $revision->toNative(); |
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} |
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public function __toString(): string |
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{ |
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return (string)$this->revision; |
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} |
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private function __construct(int $revision) |
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{ |
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$this->revision = $revision; |
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} |
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} |
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daikon-cqrs /
event-sourcing
