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<?php |
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declare(strict_types=1); |
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namespace Cycle\ORM\Relation; |
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use Cycle\ORM\Heap\Node; |
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use Cycle\ORM\Heap\State; |
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use Cycle\ORM\ORMInterface; |
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use Cycle\ORM\Reference\ReferenceInterface; |
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use Cycle\ORM\Relation\Traits\ToOneTrait; |
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use Cycle\ORM\Service\EntityProviderInterface; |
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use Cycle\ORM\Transaction\Pool; |
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use Cycle\ORM\Transaction\Tuple; |
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/** |
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* Variation of belongs-to relation which provides the ability to be self linked. Relation can be used |
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* to create cyclic references. Relation does not trigger store operation of referenced object! |
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* |
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* @internal |
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*/ |
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class RefersTo extends AbstractRelation implements DependencyInterface |
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{ |
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use ToOneTrait; |
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public function __construct(ORMInterface $orm, string $role, string $name, string $target, array $schema) |
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{ |
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$this->entityProvider = $orm->getService(EntityProviderInterface::class); |
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parent::__construct($orm, $role, $name, $target, $schema); |
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} |
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public function prepare(Pool $pool, Tuple $tuple, mixed $related, bool $load = true): void |
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{ |
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$state = $tuple->state; |
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$relName = $this->getName(); |
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if (SpecialValue::isNotSet($related)) { |
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if (!$state->hasRelation($relName)) { |
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$state->setRelationStatus($relName, RelationInterface::STATUS_DEFERRED); |
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return; |
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} |
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$related = $state->getRelation($relName); |
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} |
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$node = $tuple->node; |
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$tuple->state->setRelation($relName, $related); |
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if ($related instanceof ReferenceInterface && $this->resolve($related, false) !== null) { |
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$related = $related->getValue(); |
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$tuple->state->setRelation($relName, $related); |
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} |
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if ($this->checkNullValue($node, $tuple->state, $related)) { |
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return; |
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} |
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$this->registerWaitingFields($tuple->state, false); |
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if ($related instanceof ReferenceInterface) { |
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$tuple->state->setRelationStatus($relName, RelationInterface::STATUS_DEFERRED); |
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return; |
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} |
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$tuple->state->setRelationStatus($relName, RelationInterface::STATUS_PROCESS); |
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$rTuple = $pool->offsetGet($related); |
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if ($rTuple === null && $this->isCascade()) { |
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$pool->attachStore($related, false, null, null, false); |
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} |
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} |
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public function queue(Pool $pool, Tuple $tuple): void |
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{ |
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$state = $tuple->state; |
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$relName = $this->getName(); |
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if (!$state->hasRelation($relName)) { |
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$state->setRelationStatus($relName, RelationInterface::STATUS_RESOLVED); |
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return; |
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} |
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$node = $tuple->node; |
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$related = $tuple->state->getRelation($relName); |
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if ($related instanceof ReferenceInterface && ($related->hasValue() || $this->resolve($related, false) !== null)) { |
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$related = $related->getValue(); |
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$tuple->state->setRelation($relName, $related); |
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} |
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if ($related instanceof ReferenceInterface) { |
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$scope = $related->getScope(); |
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if (\array_intersect($this->outerKeys, \array_keys($scope))) { |
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foreach ($this->outerKeys as $i => $outerKey) { |
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$tuple->state->register($this->innerKeys[$i], $scope[$outerKey]); |
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} |
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$node->setRelation($relName, $related); |
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$tuple->state->setRelationStatus($relName, RelationInterface::STATUS_RESOLVED); |
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return; |
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} |
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} |
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if ($this->checkNullValue($tuple->node, $tuple->state, $related)) { |
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return; |
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} |
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$rTuple = $pool->offsetGet($related); |
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if ($rTuple === null) { |
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if ($this->isCascade()) { |
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// todo: cascade true? |
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$rTuple = $pool->attachStore($related, false, null, null, false); |
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} elseif ( |
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$tuple->state->getRelationStatus($relName) !== RelationInterface::STATUS_DEFERRED |
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|| $tuple->status !== Tuple::STATUS_PROPOSED_RESOLVED |
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) { |
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$tuple->state->setRelationStatus($relName, RelationInterface::STATUS_DEFERRED); |
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return; |
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} else { |
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$tuple->state->setRelationStatus($relName, RelationInterface::STATUS_RESOLVED); |
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return; |
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} |
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} |
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if ($rTuple->status === Tuple::STATUS_PROCESSED |
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|| ($rTuple->status > Tuple::STATUS_PREPARING |
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&& $rTuple->state->getStatus() !== node::NEW |
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&& \array_intersect($this->outerKeys, $rTuple->state->getWaitingFields()) === []) |
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) { |
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$this->pullValues($tuple->state, $rTuple->state); |
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$node->setRelation($relName, $related); |
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$tuple->state->setRelationStatus($relName, RelationInterface::STATUS_RESOLVED); |
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return; |
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} |
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if ($tuple->status !== Tuple::STATUS_PREPARING) { |
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$tuple->state->setRelationStatus($relName, RelationInterface::STATUS_DEFERRED); |
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} |
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} |
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private function pullValues(State $state, State $rState): void |
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{ |
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$changes = $rState->getTransactionData(); |
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foreach ($this->outerKeys as $i => $outerKey) { |
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if (isset($changes[$outerKey])) { |
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$state->register($this->innerKeys[$i], $changes[$outerKey]); |
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} |
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} |
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} |
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private function checkNullValue(Node $node, State $state, mixed $value): bool |
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{ |
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if ($value !== null) { |
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return false; |
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} |
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$original = $node->getRelation($this->getName()); |
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// Original is not null |
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if ($original !== null) { |
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// Reset keys |
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foreach ($this->innerKeys as $innerKey) { |
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$state->register($innerKey, null); |
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} |
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} |
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$node->setRelation($this->getName(), null); |
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$state->setRelationStatus($this->getName(), RelationInterface::STATUS_RESOLVED); |
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return true; |
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} |
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} |
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cycle /
orm
