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<?php declare(strict_types=1); |
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/** |
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* This file is part of the daikon-cqrs/event-sourcing 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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namespace Daikon\EventSourcing\EventStore\Stream; |
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use Daikon\Interop\FromNativeInterface; |
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use Daikon\Interop\ToNativeInterface; |
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final class Sequence implements FromNativeInterface, ToNativeInterface |
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{ |
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private const INITIAL = 1; |
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private const NONE = 0; |
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private int $seqNumber; |
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/** @param int $seqNumber */ |
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1 |
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public static function fromNative($seqNumber): self |
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{ |
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return new self($seqNumber); |
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} |
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public static function makeInitial(): self |
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{ |
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return new self(self::NONE); |
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} |
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1 |
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public function toNative(): int |
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{ |
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return $this->seqNumber; |
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} |
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public function increment(): self |
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{ |
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$copy = clone $this; |
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$copy->seqNumber++; |
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return $copy; |
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} |
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public function decrement(): self |
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{ |
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$copy = clone $this; |
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$copy->seqNumber--; |
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return $copy; |
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} |
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public function equals(Sequence $seqNumber): bool |
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{ |
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return $this->seqNumber === $seqNumber->toNative(); |
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} |
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public function isInitial(): bool |
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{ |
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return $this->seqNumber === self::INITIAL; |
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} |
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public function isWithinRange(Sequence $from, Sequence $to): bool |
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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(Sequence $seqNumber): bool |
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{ |
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return $this->seqNumber >= $seqNumber->toNative(); |
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} |
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public function isLessThanOrEqual(Sequence $seqNumber): bool |
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{ |
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return $this->seqNumber <= $seqNumber->toNative(); |
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} |
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public function __toString(): string |
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{ |
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return (string)$this->seqNumber; |
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} |
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private function __construct(int $seqNumber) |
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{ |
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$this->seqNumber = $seqNumber; |
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} |
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} |
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daikon-cqrs /
event-sourcing
