Phossa2\Cache\Driver\NullDriver

Complexity

Total Complexity

5

Size/Duplication

Total Lines	42
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	1

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	save()	0	4	1
A	driverHas()	0	4	1
A	driverGet()	0	4	1
A	driverDelete()	0	4	1
A	driverClear()	0	4	1

<?php
/**
 * Phossa Project
 *
 * PHP version 5.4
 *
 * @category  Library
 * @package   Phossa2\Cache
 * @copyright Copyright (c) 2016 phossa.com
 * @license   http://mit-license.org/ MIT License
 * @link      http://www.phossa.com/
 */
/*# declare(strict_types=1); */

namespace Phossa2\Cache\Driver;

use Psr\Cache\CacheItemInterface;

/**
 * NullDriver
 *
 * @package Phossa2\Cache
 * @author  Hong Zhang <phossa@126.com>
 * @see     DriverAbstract
 * @version 2.0.0
 * @since   2.0.0 added
 */
class NullDriver extends DriverAbstract
{
    /**
     * {@inheritDoc}
     */
    public function save(CacheItemInterface $item)/*# : bool */
    {
        return true;
    }

    /**
     * {inheritDoc}
     */
    protected function driverHas(/*# string */ $key)/*# : array */
    {
        return [];
    }

    /**
     * {@inheritDoc}
     */
    protected function driverGet(/*# string */ $key)
    {
        return null;
    }

    /**
     * {@inheritDoc}
     */
    protected function driverDelete(CacheItemInterface $item)/*# : bool */
    {
        return true;
    }

    /**
     * {@inheritDoc}
     */
    protected function driverClear()/*# : bool */
    {
        return true;
    }
}