predaddy\messagehandling\CachedMessageHandlerDescriptorFactory

Complexity

Total Complexity

4

Size/Duplication

Total Lines	47
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	0

Importance

Changes	1
Bugs	0	Features	0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	5	1
	innerCreate()	0	1	?
A	create()	0	7	2
A	getFunctionDescriptorFactory()	0	4	1

<?php
/*
 * Copyright (c) 2012-2014 Janos Szurovecz
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

namespace predaddy\messagehandling;

use SplObjectStorage;

/**
 * Caches the MessageHandlerDescriptor instances by the class of handlers.
 *
 * @author Janos Szurovecz <szjani@szjani.hu>
 */
abstract class CachedMessageHandlerDescriptorFactory implements MessageHandlerDescriptorFactory
{
    /**
     * @var FunctionDescriptorFactory
     */
    private $functionDescFactory;

    /**
     * @var SplObjectStorage
     */
    private $descriptorMap;

    /**
     * @param FunctionDescriptorFactory $functionDescFactory
     */
    public function __construct(FunctionDescriptorFactory $functionDescFactory)
    {
        $this->functionDescFactory = $functionDescFactory;
        $this->descriptorMap = new SplObjectStorage();
    }

    /**
     * @param object $handler
     * @return MessageHandlerDescriptor
     */
    abstract protected function innerCreate($handler);

    /**
     * @param object $handler
     * @return MessageHandlerDescriptor
     */
    public function create($handler)
    {
        if (!$this->descriptorMap->contains($handler)) {
            $this->descriptorMap->attach($handler, $this->innerCreate($handler));
        }
        return $this->descriptorMap->offsetGet($handler);
    }

    /**
     * @return FunctionDescriptorFactory
     */
    public function getFunctionDescriptorFactory()
    {
        return $this->functionDescFactory;
    }
}