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<?php |
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namespace Smart\EtlBundle\Loader; |
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use Doctrine\ORM\EntityManager; |
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use Smart\EtlBundle\Entity\ImportableInterface; |
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use Smart\EtlBundle\Exception\Loader\EntityTypeNotHandledException; |
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use Smart\EtlBundle\Exception\Loader\EntityAlreadyRegisteredException; |
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use Symfony\Component\PropertyAccess\PropertyAccess; |
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use Symfony\Component\PropertyAccess\PropertyAccessor; |
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/** |
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* Nicolas Bastien <[email protected]> |
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*/ |
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class DoctrineInsertUpdateLoader implements LoaderInterface |
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{ |
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/** |
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* @var EntityManager |
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*/ |
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protected $entityManager; |
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/** |
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* @var array |
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*/ |
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protected $references; |
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/** |
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* @var PropertyAccessor |
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*/ |
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protected $accessor; |
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/** |
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* List of entities to extract |
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* [ |
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* 'class' => [] |
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* ] |
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* @var array |
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*/ |
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protected $entitiesToProcess = []; |
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public function __construct($entityManager) |
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{ |
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$this->entityManager = $entityManager; |
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$this->accessor = PropertyAccess::createPropertyAccessor(); |
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} |
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/** |
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* @param string $entityClass |
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* @param callback $identifierCallback |
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* @param string $identifierProperty : if null this entity will be always insert |
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* @param array $entityProperties properties to synchronize |
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* @return $this |
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*/ |
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public function addEntityToProcess($entityClass, $identifierCallback, $identifierProperty, array $entityProperties = []) |
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{ |
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if (isset($this->entitiesToProcess[$entityClass])) { |
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throw new EntityAlreadyRegisteredException($entityClass); |
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} |
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$this->entitiesToProcess[$entityClass] = [ |
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'class' => $entityClass, |
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'callback' => $identifierCallback, |
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'identifier' => $identifierProperty, |
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'properties' => $entityProperties |
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]; |
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return $this; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function load(array $data) |
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{ |
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$this->entityManager->beginTransaction(); |
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try { |
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foreach ($data as $object) { |
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$this->processObject($object); |
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} |
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$this->entityManager->flush(); |
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$this->entityManager->commit(); |
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} catch (\Exception $e) { |
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var_dump('EXCEPTION LOADER : ' . $e->getMessage()); |
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$this->entityManager->rollback(); |
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} |
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} |
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/** |
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* @param ImportableInterface $object |
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* @return ImportableInterface |
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* @throws \Exception |
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* @throws \TypeError |
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*/ |
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protected function processObject($object) |
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{ |
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if (!isset($this->entitiesToProcess[get_class($object)])) { |
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throw new EntityTypeNotHandledException(get_class($object)); |
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} |
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$identifier = $this->entitiesToProcess[get_class($object)]['callback']($object); |
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//Replace relations by their reference |
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foreach ($this->entitiesToProcess[get_class($object)]['properties'] as $property) { |
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$propertyValue = $this->accessor->getValue($object, $property); |
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if ($this->isEntityRelation($propertyValue)) { |
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$relation = $propertyValue; //better understanding |
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if (!isset($this->entitiesToProcess[get_class($relation)])) { |
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throw new EntityTypeNotHandledException(get_class($relation)); |
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} |
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$relationIdentifier = $this->entitiesToProcess[get_class($relation)]['callback']($relation); |
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if (!isset($this->references[$relationIdentifier])) { |
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//new relation should be processed before |
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$this->processObject($relation); |
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} |
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$this->accessor->setValue( |
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$object, |
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$property, |
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$this->references[$relationIdentifier] |
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); |
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} elseif ($propertyValue instanceof \Traversable) { |
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foreach ($propertyValue as $k => $v) { |
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if ($this->isEntityRelation($v)) { |
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if (!isset($this->entitiesToProcess[get_class($v)])) { |
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throw new EntityTypeNotHandledException(get_class($v)); |
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} |
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$relationIdentifier = $this->entitiesToProcess[get_class($v)]['callback']($v); |
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if (!isset($this->references[$relationIdentifier])) { |
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//new relation should be processed before |
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$this->processObject($v); |
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} |
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$propertyValue[$k] = $this->references[$relationIdentifier]; |
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} |
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} |
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$this->accessor->setValue( |
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$object, |
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$property, |
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$propertyValue |
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); |
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} |
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} |
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$dbObject = null; |
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if (!is_null($this->entitiesToProcess[get_class($object)]['identifier'])) { |
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$dbObject = $this->entityManager->getRepository(get_class($object))->findOneBy([$this->entitiesToProcess[get_class($object)]['identifier'] => $identifier]); |
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} |
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if ($dbObject === null) { |
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if (!$object->isImported()) { |
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$object->setImportedAt(new \DateTime()); |
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} |
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$this->entityManager->persist($object); |
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if (!is_null($identifier)) { |
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$this->references[$identifier] = $object; |
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} |
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} else { |
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foreach ($this->entitiesToProcess[get_class($object)]['properties'] as $property) { |
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$this->accessor->setValue($dbObject, $property, $this->accessor->getValue($object, $property)); |
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} |
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if (!$dbObject->isImported()) { |
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$dbObject->setImportedAt(new \DateTime()); |
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} |
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$this->references[$identifier] = $dbObject; |
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} |
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return $object; |
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} |
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/** |
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* Check if $propertyValue is an entity relation to process |
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* |
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* @param mixed $propertyValue |
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* @return bool |
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*/ |
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protected function isEntityRelation($propertyValue) |
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{ |
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return (is_object($propertyValue) && !($propertyValue instanceof \DateTime) && !($propertyValue instanceof \Traversable)); |
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} |
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} |
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smartbooster /
etl-bundle
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