GpsLab\Component\Query\Handler\Locator\SymfonyContainerQueryHandlerLocator

Complexity

Total Complexity

7

Size/Duplication

Total Lines	50
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	findHandler()	0	4	1
A	registerService()	0	4	1
B	lazyLoad()	0	15	5

<?php

/**
 * GpsLab component.
 *
 * @author    Peter Gribanov <info@peter-gribanov.ru>
 * @copyright Copyright (c) 2011, Peter Gribanov
 * @license   http://opensource.org/licenses/MIT
 */

namespace GpsLab\Component\Query\Handler\Locator;

use GpsLab\Component\Query\Query;
use Symfony\Component\DependencyInjection\ContainerAwareInterface;
use Symfony\Component\DependencyInjection\ContainerAwareTrait;
use Symfony\Component\DependencyInjection\ContainerInterface;

class SymfonyContainerQueryHandlerLocator implements QueryHandlerLocator, ContainerAwareInterface
{
    use ContainerAwareTrait;

    /**
     * @var array
     */
    private $query_handler_ids = [];

    /**
     * @param Query $query
     *
     * @return callable|null
     */
    public function findHandler(Query $query)
    {
        return $this->lazyLoad(get_class($query));
    }

    /**
     * @param string $query_name
     * @param string $service
     * @param string $method
     */
    public function registerService($query_name, $service, $method = '__invoke')
    {
        $this->query_handler_ids[$query_name] = [$service, $method];
    }

    /**
     * @param $query_name
     *
     * @return callable
     */
    private function lazyLoad($query_name)
    {
        if ($this->container instanceof ContainerInterface && isset($this->query_handler_ids[$query_name])) {
            list($service, $method) = $this->query_handler_ids[$query_name];
            $handler = $this->container->get($service);

            if (is_callable($handler)) {
                return $handler;
            } elseif (is_callable([$handler, $method])) {
                return [$handler, $method];
            }
        }

        return null;
    }
}