Metadata\Driver\DriverChain

Complexity

Total Complexity

9

Size/Duplication

Total Lines	50
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Importance

Changes	3
Bugs	0	Features	2

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	addDriver()	0	4	1
A	loadMetadataForClass()	0	10	3
A	getAllClassNames()	0	21	4

<?php

/*

Copyright notice too long

 * Copyright 2011 Johannes M. Schmitt <schmittjoh@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace Metadata\Driver;

final class DriverChain implements AdvancedDriverInterface

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{
    private $drivers;

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    public function __construct(array $drivers = array())

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    {

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        $this->drivers = $drivers;

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    }

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    public function addDriver(DriverInterface $driver)

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    {

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        $this->drivers[] = $driver;

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    }

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    public function loadMetadataForClass(\ReflectionClass $class)

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    {

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        foreach ($this->drivers as $driver) {

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            if (null !== $metadata = $driver->loadMetadataForClass($class)) {

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                return $metadata;

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            }

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        }

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        return null;

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    }

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    /**

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     * {@inheritDoc}

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     */

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    public function getAllClassNames()

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    {

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        $classes = array();

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        foreach ($this->drivers as $driver) {

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            if (!$driver instanceof AdvancedDriverInterface) {

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                throw new \RuntimeException(

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                    sprintf(

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                        'Driver "%s" must be an instance of "AdvancedDriverInterface" to use '.

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                        '"DriverChain::getAllClassNames()".',

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                        get_class($driver)

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                    )

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                );

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            }

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            $driverClasses = $driver->getAllClassNames();

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            if (!empty($driverClasses)) {

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                $classes = array_merge($classes, $driverClasses);

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            }

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        }

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        return $classes;

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    }

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}