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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\Exception\Relation\NullException; |
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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\Reference; |
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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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* Provides ability to link to the parent object. |
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* Will claim branch up to the parent object and it's relations. To disable |
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* branch walk-through use RefersTo relation. |
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* |
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* @internal |
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*/ |
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class BelongsTo 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 = $this->getName(); |
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if ($state->hasRelation($relName)) { |
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$prefill = $state->getRelation($relName); |
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$nodeValue = $tuple->node->getRelation($relName); |
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if ($nodeValue === $related) { |
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$related = $prefill; |
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} |
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} |
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$state->setRelation($relName, $related); |
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if ($related === null) { |
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$this->setNullFromRelated($tuple, true); |
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return; |
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} |
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$this->registerWaitingFields($tuple->state); |
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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, $related); |
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} |
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$tuple->state->setRelationStatus($relName, RelationInterface::STATUS_PROCESS); |
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if ($related instanceof ReferenceInterface) { |
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return; |
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} |
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$rTuple = $pool->offsetGet($related); |
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if ($rTuple === null) { |
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$pool->attachStore($related, $this->isCascade(), 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 = $tuple->state; |
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$related = $state->getRelation($this->getName()); |
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if ($related instanceof ReferenceInterface && $related->hasValue()) { |
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$related = $related->getValue(); |
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$state->setRelation($this->getName(), $related); |
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} |
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if ($related === null) { |
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$this->setNullFromRelated($tuple, false); |
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return; |
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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 => $outerKey) { |
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$state->register($this->innerKeys[$i], $scope[$outerKey]); |
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} |
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$state->setRelationStatus($this->getName(), RelationInterface::STATUS_RESOLVED); |
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return; |
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} |
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if ($tuple->status >= Tuple::STATUS_WAITED) { |
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$state->setRelationStatus($this->getName(), RelationInterface::STATUS_RESOLVED); |
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} |
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return; |
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} |
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/** @var Tuple $rTuple */ |
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$rTuple = $pool->offsetGet($related); |
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if ($this->shouldPull($tuple, $rTuple)) { |
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$this->pullValues($state, $rTuple->state); |
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$state->setRelation($this->getName(), $related); |
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$state->setRelationStatus($this->getName(), RelationInterface::STATUS_RESOLVED); |
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} |
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} |
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private function shouldPull(Tuple $tuple, Tuple $rTuple): bool |
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{ |
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$minStatus = Tuple::STATUS_PREPROCESSED; |
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if ($this->inversion !== null) { |
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$relName = $this->getTargetRelationName(); |
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if ($rTuple->state->getRelationStatus($relName) === RelationInterface::STATUS_RESOLVED) { |
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$minStatus = Tuple::STATUS_DEFERRED; |
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} |
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} |
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if ($rTuple->status < $minStatus) { |
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return false; |
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} |
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// Check bidirected relation: when related entity has been removed from HasSome relation |
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$oldData = $tuple->node->getData(); |
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$newData = $rTuple->state->getTransactionData(); |
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$current = $tuple->state->getData(); |
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$noChanges = true; |
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$toReference = []; |
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foreach ($this->outerKeys as $i => $outerKey) { |
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$innerKey = $this->innerKeys[$i]; |
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if (!array_key_exists($innerKey, $oldData) || $oldData[$innerKey] !== $newData[$outerKey]) { |
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return true; |
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} |
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$toReference[$outerKey] = $current[$innerKey]; |
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$noChanges = $noChanges && Node::compare($current[$innerKey], $oldData[$innerKey]) === 0; |
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} |
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// If no changes |
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if ($noChanges) { |
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$tuple->state->setRelationStatus($this->getName(), RelationInterface::STATUS_RESOLVED); |
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return false; |
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} |
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// Nullable relation and null values |
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if ($this->isNullable()) { |
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$isNull = true; |
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foreach ($this->innerKeys as $innerKey) { |
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if (!array_key_exists($innerKey, $current) || $current[$innerKey] !== null) { |
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$isNull = false; |
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break; |
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} |
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} |
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if ($isNull) { |
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$tuple->state->setRelation($this->getName(), null); |
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$tuple->state->setRelationStatus($this->getName(), RelationInterface::STATUS_RESOLVED); |
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return false; |
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} |
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} |
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$tuple->state->setRelationStatus($this->getName(), RelationInterface::STATUS_RESOLVED); |
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$reference = new Reference($this->target, $toReference); |
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$tuple->state->setRelation( |
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$this->getName(), |
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$this->resolve($reference, false) ?? $reference, |
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); |
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return false; |
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} |
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private function pullValues(State $state, State $related): void |
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{ |
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$changes = $related->getTransactionData(); |
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foreach ($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 checkNullValuePossibility(Tuple $tuple): bool |
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{ |
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if ($tuple->status < Tuple::STATUS_WAITED) { |
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return true; |
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} |
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if ($tuple->status < Tuple::STATUS_PREPROCESSED |
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&& \array_intersect($this->innerKeys, $tuple->state->getWaitingFields(false)) !== [] |
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) { |
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return true; |
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} |
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// Check |
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$values = []; |
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$data = $tuple->state->getData(); |
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foreach ($this->innerKeys as $i => $innerKey) { |
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if (!isset($data[$innerKey])) { |
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return false; |
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} |
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$values[$this->outerKeys[$i]] = $data[$innerKey]; |
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} |
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$tuple->state->setRelation($this->getName(), new Reference($this->target, $values)); |
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$tuple->state->setRelationStatus($this->getName(), RelationInterface::STATUS_RESOLVED); |
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return true; |
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} |
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private function setNullFromRelated(Tuple $tuple, bool $isPreparing): void |
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{ |
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$state = $tuple->state; |
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$node = $tuple->node; |
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if (!$this->isNullable()) { |
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if ($isPreparing) { |
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// set null unchanged fields |
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$changes = $state->getChanges(); |
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foreach ($this->innerKeys as $innerKey) { |
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if (!isset($changes[$innerKey])) { |
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$state->register($innerKey, null); |
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// Field must be filled |
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$state->waitField($innerKey, true); |
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} |
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} |
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$tuple->state->setRelationStatus($this->getName(), RelationInterface::STATUS_PROCESS); |
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} elseif (!$this->checkNullValuePossibility($tuple)) { |
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throw new NullException(sprintf('Relation `%s`.%s can not be null.', $node->getRole(), (string)$this)); |
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} |
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return; |
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} |
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$original = $node->getRelation($this->getName()); |
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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($innerKey, null); |
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} |
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} |
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$state->setRelationStatus($this->getName(), RelationInterface::STATUS_RESOLVED); |
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} |
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} |
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