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<?php |
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/* |
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* event (https://github.com/phpgears/event). |
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* Event handling. |
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* |
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* @license MIT |
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* @link https://github.com/phpgears/event |
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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\Event; |
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use Gears\DTO\Exception\InvalidScalarParameterException; |
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use Gears\DTO\ScalarPayloadBehaviour; |
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use Gears\Immutability\ImmutabilityBehaviour; |
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use function DeepCopy\deep_copy; |
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/** |
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* Event metadata behaviour. |
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*/ |
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trait EventBehaviour |
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{ |
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use ImmutabilityBehaviour, ScalarPayloadBehaviour { |
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ScalarPayloadBehaviour::__call insteadof ImmutabilityBehaviour; |
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} |
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/** |
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* Event metadata. |
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* |
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* @var array<string, mixed> |
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*/ |
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private $metadata = []; |
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/** |
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* @var \DateTimeImmutable |
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*/ |
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private $createdAt; |
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/** |
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* Get event metadata. |
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* |
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* @return array<string, mixed> |
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*/ |
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final public function getMetadata(): array |
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{ |
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return $this->metadata; |
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} |
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/** |
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* Get event with added metadata. |
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* |
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* @param array<string, mixed> $metadata |
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* |
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* @return mixed|self |
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*/ |
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final public function withAddedMetadata(array $metadata) |
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{ |
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/* @var self $self */ |
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$self = deep_copy($this); |
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$self->addMetadata($metadata); |
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return $self; |
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} |
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/** |
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* Set event metadata. |
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* |
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* @param array<string, mixed> $metadata |
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* |
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* @throws InvalidScalarParameterException |
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*/ |
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private function addMetadata(array $metadata): void |
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{ |
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foreach ($metadata as $parameter => $value) { |
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try { |
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$this->checkParameterType($value); |
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} catch (InvalidScalarParameterException $exception) { |
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throw new InvalidScalarParameterException( |
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\sprintf( |
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'Class "%s" can only accept scalar metadata parameters, "%s" given', |
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self::class, |
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\is_object($value) ? \get_class($value) : \gettype($value) |
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), |
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$exception->getCode(), |
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$exception |
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); |
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} |
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$this->metadata[$parameter] = $value; |
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} |
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} |
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/** |
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* Get event creation time. |
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* |
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* @return \DateTimeImmutable |
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*/ |
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final public function getCreatedAt(): \DateTimeImmutable |
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{ |
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return $this->createdAt; |
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} |
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} |
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phpgears /
event
