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<?php declare(strict_types=1);
namespace hiqdev\php\billing\product\invoice;
use hiqdev\php\billing\product\price\PriceTypeDefinition;
use hiqdev\php\billing\product\trait\HasLock;
use hiqdev\php\billing\product\trait\HasLockInterface;
use IteratorAggregate;
use Traversable;
/**
* @template T of PriceTypeDefinition
* @implements IteratorAggregate<int, RepresentationInterface>
*/
class RepresentationCollection implements IteratorAggregate, HasLockInterface
{
use HasLock;
private array $representations = [];
private RepresentationUniquenessGuard $uniquenessGuard;
public function __construct(private readonly PriceTypeDefinition $priceTypeDefinition)
$this->uniquenessGuard = new RepresentationUniquenessGuard();
}
* @return Traversable<int, RepresentationInterface>
public function getIterator(): Traversable
return new \ArrayIterator($this->representations);
public function attach(RepresentationInterface $representation): self
$this->ensureNotLocked();
$representation->setType($this->priceTypeDefinition->type());
$this->uniquenessGuard->ensureUnique($representation);
$this->representations[] = $representation;
return $this;
* @psalm-return T
public function end(): PriceTypeDefinition
return $this->priceTypeDefinition;
public function filterByType(string $className): array
return array_filter($this->representations, fn($r) => $r instanceof $className);
hiqdev /
php-billing
