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<?php |
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namespace Vox\Webservice; |
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use BadMethodCallException; |
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use Metadata\MetadataFactoryInterface; |
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use SplObjectStorage; |
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use Vox\Metadata\PropertyMetadata; |
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use Vox\Webservice\Mapping\BelongsTo; |
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use Vox\Webservice\Mapping\HasMany; |
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use Vox\Webservice\Mapping\HasOne; |
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use Vox\Webservice\Metadata\TransferMetadata; |
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/** |
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* the unit of work keeps track of the transfers current state, works as a sort of memento pattern |
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* its really important part of the persistence proccess |
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* |
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* @author Jhonatan Teixeira <[email protected]> |
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*/ |
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class UnityOfWork implements UnityOfWorkInterface |
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{ |
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use MetadataTrait; |
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/** |
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* @var SplObjectStorage |
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*/ |
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private $managed; |
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/** |
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* @var SplObjectStorage |
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*/ |
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private $removedObjects; |
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public function __construct(MetadataFactoryInterface $metadataFactory) |
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{ |
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$this->metadataFactory = $metadataFactory; |
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$this->managed = new SplObjectStorage(); |
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$this->removedObjects = new SplObjectStorage(); |
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} |
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public function getIterator() |
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{ |
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return new \ArrayIterator(iterator_to_array($this->managed)); |
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} |
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public function contains($object): bool |
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{ |
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return $this->managed->contains($object); |
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} |
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public function attach($object) |
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{ |
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$this->managed->attach($object, clone $object); |
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} |
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public function detach($object) |
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{ |
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$this->managed->detach($object); |
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if ($this->removedObjects->contains($object)) { |
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$this->removedObjects->detach($object); |
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} |
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} |
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public function isEquals($object): bool |
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{ |
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$metadata = $this->getClassMetadata($object); |
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$storedObject = $this->managed[$object]; |
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/* @var $propertyMetadata PropertyMetadata */ |
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foreach ($metadata->propertyMetadata as $name => $propertyMetadata) { |
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$storedValue = $propertyMetadata->getValue($storedObject); |
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$value = $propertyMetadata->getValue($object); |
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if ($propertyMetadata->hasAnnotation(BelongsTo::class)) { |
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if (!empty($value) |
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&& $this->hasRelationshipChanged($object, $value, $propertyMetadata, $metadata)) { |
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return false; |
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} |
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continue; |
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} |
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if ($propertyMetadata->hasAnnotation(HasOne::class) || $propertyMetadata->hasAnnotation(HasMany::class)) { |
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continue; |
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} |
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if ($storedValue != $value) { |
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return false; |
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} |
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} |
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return true; |
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} |
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private function hasRelationshipChanged( |
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$object, |
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$related, |
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PropertyMetadata $propertyMetadata, |
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TransferMetadata $metadata |
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): bool { |
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/* @var $belongsTo BelongsTo */ |
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$belongsTo = $propertyMetadata->getAnnotation(BelongsTo::class); |
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if (is_array($belongsTo->foreignField)) { |
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return $this->hasMultiFieldsRelationshipChanged($object, $related, $belongsTo->foreignField); |
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} |
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$externalId = $this->getIdValue($related); |
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$internalId = $metadata->propertyMetadata[$belongsTo->foreignField]->getValue($object); |
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return $externalId !== $internalId; |
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} |
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private function hasMultiFieldsRelationshipChanged( |
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$object, |
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$related, |
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array $fields |
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): bool { |
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$objectValues = []; |
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$relatedValues = []; |
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$objectMetadata = $this->getClassMetadata($object); |
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$relatedMetadata = $this->getClassMetadata($related); |
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foreach ($fields as $field) { |
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$objectValues[$field] = $objectMetadata->propertyMetadata[$field]->getValue($object); |
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$relatedValues[$field] = $relatedMetadata->propertyMetadata[$field]->getValue($related); |
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} |
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$diff = array_diff_assoc($objectValues, $relatedValues); |
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return count($diff) > 0; |
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} |
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public function fetchByParams(...$params) |
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{ |
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if (count($params) != 2) { |
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throw new BadMethodCallException('this method needs two params, $className: string, $id: scalar'); |
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} |
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$className = (string) $params[0]; |
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$id = $params[1]; |
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foreach ($this->managed as $managed) { |
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if (get_class($managed) == $className && $id == $this->getIdValue($managed)) { |
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return $managed; |
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} |
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} |
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} |
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public function remove($object) |
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{ |
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if (!$this->managed->contains($object)) { |
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throw new \RuntimeException('only managed object can be scheduled to deletion'); |
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} |
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$this->removedObjects->attach($object); |
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} |
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public function isNew($object): bool |
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{ |
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$id = $this->getIdValue($this->managed[$object]); |
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return empty($id); |
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} |
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public function isDirty($object): bool |
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{ |
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return !$this->isNew($object) && !$this->isEquals($object); |
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} |
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public function isRemoved($object): bool |
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{ |
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return $this->removedObjects->contains($object); |
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} |
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public function isDetached($object): bool |
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{ |
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return !$this->managed->contains($object); |
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} |
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} |
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jhonatanTeixeira /
restfull-client-orm
