Gears\EventSourcing\Aggregate\AggregateVersion

Complexity

Total Complexity

6

Size/Duplication

Total Lines	69
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	8	2
A	getValue()	0	4	1
A	isEqualTo()	0	4	1
A	getNext()	0	7	1
A	getPrevious()	0	7	1

<?php

/*
 * event-sourcing (https://github.com/phpgears/event-sourcing).
 * Event Sourcing base.
 *
 * @license MIT
 * @link https://github.com/phpgears/event-sourcing
 * @author Julián Gutiérrez <juliangut@gmail.com>
 */

declare(strict_types=1);

namespace Gears\EventSourcing\Aggregate;

use Gears\EventSourcing\Aggregate\Exception\AggregateException;

final class AggregateVersion
{
    /**
     * @var int
     */
    private $value;

    /**
     * Version constructor.
     *
     * @param int $value
     */
    public function __construct(int $value)
    {
        if ($value < 0) {
            throw new AggregateException(\sprintf('Version value should be higher than 0, %s given', $value));
        }

        $this->value = $value;
    }

    /**
     * Get version value.
     *
     * @return int
     */
    public function getValue(): int
    {
        return $this->value;
    }

    /**
     * Check equality.
     *
     * @param self $version

Should the type for parameter $version not be \self?

     *
     * @return bool
     */
    public function isEqualTo(self $version): bool
    {
        return $this->value === $version->getValue();
    }

    /**
     * Get next version.
     *
     * @return self
     */
    public function getNext(): self
    {
        $clone = clone $this;
        $clone->value = $this->value + 1;

        return $clone;
    }

    /**
     * Get previous version.
     *
     * @return AggregateVersion
     */
    public function getPrevious(): self
    {
        $clone = clone $this;
        $clone->value = $this->value - 1;

        return $clone;
    }
}