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<?php |
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/** |
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* Copyright 2017 SURFnet B.V. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace Surfnet\StepupMiddleware\MiddlewareBundle\EventSourcing; |
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use ArrayIterator; |
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use Broadway\ReadModel\ProjectorInterface; |
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use IteratorAggregate; |
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use Surfnet\StepupMiddleware\MiddlewareBundle\Exception\InvalidArgumentException; |
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final class ProjectorCollection implements IteratorAggregate |
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{ |
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/** |
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* @var ProjectorInterface[] |
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*/ |
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private $projectors = []; |
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/** |
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* @param ProjectorInterface $projector |
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*/ |
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public function add(ProjectorInterface $projector) |
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{ |
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$this->projectors[get_class($projector)] = $projector; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function getProjectorNames() |
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{ |
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return array_map( |
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function (ProjectorInterface $projector) { |
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return get_class($projector); |
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}, |
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array_values($this->projectors) |
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); |
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} |
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/** |
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* @param array $projectorNames |
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* @return ProjectorCollection |
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*/ |
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public function selectByNames(array $projectorNames) |
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{ |
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$subsetCollection = new ProjectorCollection; |
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foreach ($projectorNames as $projectorName) { |
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if (!array_key_exists($projectorName, $this->projectors)) { |
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throw new InvalidArgumentException( |
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sprintf( |
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'Cannot select a subset of projectors, because projector "%s" is not present in the collection', |
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$projectorName |
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) |
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); |
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} |
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$subsetCollection->add($this->projectors[$projectorName]); |
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} |
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return $subsetCollection; |
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} |
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/** |
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* @param ProjectorInterface $projector |
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* @return bool |
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*/ |
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public function contains(ProjectorInterface $projector) |
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{ |
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return array_key_exists(get_class($projector), $this->projectors); |
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} |
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public function getIterator() |
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{ |
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return new ArrayIterator($this->projectors); |
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} |
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} |
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