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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 IteratorAggregate; |
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use Surfnet\StepupMiddleware\MiddlewareBundle\Exception\InvalidArgumentException; |
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final class EventCollection implements IteratorAggregate |
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{ |
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/** |
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* @var string[] |
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*/ |
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private $eventNames = []; |
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public function __construct(array $eventNames) |
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{ |
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foreach ($eventNames as $eventName) { |
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if (!is_string($eventName) || empty($eventName)) { |
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throw InvalidArgumentException::invalidType('non-empty string', 'eventName', $eventName); |
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} |
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if (!class_exists($eventName)) { |
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throw new InvalidArgumentException(sprintf( |
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'Cannot create EventCollection: class "%s" does not exist', |
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$eventName |
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)); |
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} |
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$this->eventNames[] = $eventName; |
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} |
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} |
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/** |
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* @param array $subset |
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* @return EventCollection |
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*/ |
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public function select(array $subset) |
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{ |
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$nonAvailableEventNames = array_diff($subset, $this->eventNames); |
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if (!empty($nonAvailableEventNames)) { |
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throw new InvalidArgumentException( |
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sprintf( |
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'Subset of event names contains event names not present in collection: %s', |
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implode(', ', $nonAvailableEventNames) |
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) |
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); |
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} |
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return new self($subset); |
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} |
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public function getIterator() |
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{ |
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return new ArrayIterator($this->eventNames); |
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} |
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} |
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OpenConext /
Stepup-Middleware
