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<?php |
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/* |
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* dto (https://github.com/phpgears/dto). |
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* General purpose immutable Data Transfer Objects for PHP. |
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* |
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* @license MIT |
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* @link https://github.com/phpgears/dto |
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* @author Julián Gutiérrez <[email protected]> |
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*/ |
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declare(strict_types=1); |
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namespace Gears\DTO; |
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use Gears\DTO\Exception\InvalidCollectionTypeException; |
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use Gears\DTO\Exception\InvalidParameterException; |
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use Gears\Immutability\ImmutabilityBehaviour; |
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/** |
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* Abstract immutable Data Transfer Object collection. |
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*/ |
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abstract class AbstractDTOCollection implements DTOCollection |
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{ |
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use ImmutabilityBehaviour, PayloadBehaviour { |
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PayloadBehaviour::__call insteadof ImmutabilityBehaviour; |
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__call as private payloadCall; |
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} |
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/** |
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* DTOCollection constructor. |
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* |
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* @param array<string, mixed> $elements |
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*/ |
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final protected function __construct(array $elements) |
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{ |
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$this->assertImmutable(); |
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$this->verifyElementsType($elements); |
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$this->setPayload(['elements' => \array_values($elements)]); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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final public static function fromElements(array $elements): DTOCollection |
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{ |
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return new static($elements); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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final public function getElements(): \Traversable |
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{ |
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return $this->get('elements'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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final public function getIterator(): \Traversable |
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{ |
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return $this->get('elements'); |
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} |
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/** |
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* @return mixed[] |
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*/ |
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final public function __sleep(): array |
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{ |
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return ['payload']; |
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} |
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final public function __wakeup(): void |
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{ |
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$this->assertImmutable(); |
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} |
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/** |
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* @return array<string, mixed> |
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*/ |
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final public function __serialize(): array |
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{ |
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return ['payload' => $this->payload]; |
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} |
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/** |
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* @param array<string, mixed> $data |
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* |
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* @SuppressWarnings(PHPMD.UnusedFormalParameter) |
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*/ |
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final public function __unserialize(array $data): void |
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{ |
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$this->assertImmutable(); |
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$this->setPayload($data['payload']); |
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} |
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/** |
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* Verify collection elements type. |
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* |
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* @param mixed[] $elements |
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* |
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* @throws InvalidCollectionTypeException |
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* @throws InvalidParameterException |
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*/ |
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private function verifyElementsType(array $elements): void |
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{ |
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$allowedType = $this->getAllowedType(); |
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if ($allowedType !== DTO::class |
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&& (!\class_exists($allowedType) || !\in_array(DTO::class, \class_implements($allowedType), true)) |
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) { |
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throw new InvalidCollectionTypeException(\sprintf( |
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'Allowed class type for "%s" should be a "%s", "%s" given', |
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static::class, |
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DTO::class, |
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$allowedType |
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)); |
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} |
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foreach ($elements as $element) { |
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if (!\is_object($element) || !\is_a($element, $allowedType)) { |
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throw new InvalidParameterException(\sprintf( |
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'All elements of "%s" should be instances of "%s", "%s" given', |
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static::class, |
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$allowedType, |
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\is_object($element) ? \get_class($element) : \gettype($element) |
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)); |
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} |
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} |
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} |
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/** |
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* Transform collection elements for output. |
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* |
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* @param mixed[] $elements |
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* |
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* @return \Traversable<mixed> |
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*/ |
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final protected function outputElements(array $elements): \Traversable |
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{ |
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return new \ArrayIterator($elements); |
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} |
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/** |
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* Get allowed DTO type for collection elements. |
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* |
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* @return string |
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*/ |
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abstract protected function getAllowedType(): string; |
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/** |
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* {@inheritdoc} |
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* |
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* @return string[] |
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*/ |
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final protected function getAllowedInterfaces(): array |
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{ |
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return [DTOCollection::class, \Serializable::class]; |
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} |
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} |
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phpgears /
dto
