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<?php |
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declare(strict_types=1); |
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namespace Cycle\ORM\Transaction; |
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use Countable; |
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use IteratorAggregate; |
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/** |
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* @internal |
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* @implements IteratorAggregate<object, Tuple> |
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*/ |
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final class TupleStorage implements IteratorAggregate, Countable |
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{ |
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/** @var array<int, Tuple> */ |
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private array $storage = []; |
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private array $iterators = []; |
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/** |
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* @return \Traversable<object, Tuple> |
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*/ |
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public function getIterator(): \Traversable |
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{ |
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$iterator = $this->storage; |
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// When the generator is destroyed, the reference to the iterator is removed from the collection. |
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$cleaner = new class () { |
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public array $iterators; |
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public function __destruct() |
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{ |
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unset($this->iterators[\spl_object_id($this)]); |
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} |
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}; |
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/** @psalm-suppress UnsupportedPropertyReferenceUsage */ |
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$cleaner->iterators = &$this->iterators; |
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$this->iterators[\spl_object_id($cleaner)] = &$iterator; |
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while (\count($iterator) > 0) { |
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$tuple = \current($iterator); |
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unset($iterator[\key($iterator)]); |
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yield $tuple->entity => $tuple; |
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} |
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} |
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/** |
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* Returns {@see Tuple} if exists, throws an exception otherwise. |
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* |
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* @throws \Throwable if the entity is not found in the storage |
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*/ |
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public function getTuple(object $entity): Tuple |
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{ |
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return $this->storage[\spl_object_id($entity)] ?? throw new \RuntimeException('Tuple not found'); |
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} |
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public function attach(Tuple $tuple): void |
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{ |
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if ($this->contains($tuple->entity)) { |
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return; |
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} |
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$this->storage[\spl_object_id($tuple->entity)] = $tuple; |
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foreach ($this->iterators as &$collection) { |
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$collection[\spl_object_id($tuple->entity)] = $tuple; |
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} |
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} |
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public function contains(object $entity): bool |
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{ |
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return \array_key_exists(\spl_object_id($entity), $this->storage); |
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} |
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public function detach(object $entity): void |
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{ |
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$id = \spl_object_id($entity); |
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unset($this->storage[$id]); |
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foreach ($this->iterators as &$collection) { |
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unset($collection[$id]); |
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} |
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} |
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/** |
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* @return int<0, max> |
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*/ |
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public function count(): int |
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{ |
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return \count($this->storage); |
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} |
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} |
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cycle /
orm
