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<?php |
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/** |
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* This file is part of tenside/core. |
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* |
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* (c) Christian Schiffler <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* This project is provided in good faith and hope to be usable by anyone. |
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* |
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* @package tenside/core |
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* @author Christian Schiffler <[email protected]> |
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* @copyright 2015 Christian Schiffler <[email protected]> |
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* @license https://github.com/tenside/core/blob/master/LICENSE MIT |
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* @link https://github.com/tenside/core |
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* @filesource |
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*/ |
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namespace Tenside\Core\Task; |
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use Tenside\Core\Util\JsonArray; |
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/** |
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* This class is a composite factory of several other task factories. |
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* |
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* When queried, it will try all contained factories and return as soon as any provides an result. |
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*/ |
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class CompositeTaskFactory implements TaskFactoryInterface |
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{ |
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/** |
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* The registered factories. |
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* |
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* @var TaskFactoryInterface[] |
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*/ |
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private $factories = []; |
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/** |
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* Create an instance containing the passed factories. |
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* |
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* @param TaskFactoryInterface[] $factories The factories to add. |
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*/ |
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public function __construct(array $factories = []) |
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{ |
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foreach ($factories as $factory) { |
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$this->add($factory); |
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} |
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} |
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/** |
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* Add the passed factory. |
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* |
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* @param TaskFactoryInterface $factory The factory to add. |
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* |
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* @return CompositeTaskFactory |
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*/ |
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public function add(TaskFactoryInterface $factory) |
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{ |
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$this->factories[] = $factory; |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isTypeSupported($taskType) |
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{ |
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return ($this->getFactoryForType($taskType) instanceof TaskFactoryInterface); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws \InvalidArgumentException For unsupported task types. |
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*/ |
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public function createInstance($taskType, JsonArray $metaData) |
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{ |
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if (!($factory = $this->getFactoryForType($taskType)) instanceof TaskFactoryInterface) { |
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throw new \InvalidArgumentException('Do not know how to create task.'); |
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} |
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return $factory->createInstance($taskType, $metaData); |
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} |
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/** |
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* Search the factory that can handle the type. |
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* |
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* @param string $taskType The task type to search. |
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* |
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* @return null|TaskFactoryInterface |
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*/ |
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private function getFactoryForType($taskType) |
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{ |
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foreach ($this->factories as $factory) { |
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if ($factory->isTypeSupported($taskType)) { |
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return $factory; |
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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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tenside /
core
