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<?php |
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namespace Smart\EtlBundle\Extractor; |
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use Doctrine\ORM\EntityManager; |
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use Doctrine\ORM\EntityRepository; |
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use Doctrine\ORM\QueryBuilder; |
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use Smart\EtlBundle\Entity\ImportableInterface; |
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use Smart\EtlBundle\Exception\Extractor\EntityTypeNotHandledException; |
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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 DoctrineEntityExtractor extends AbstractExtractor implements ExtractorInterface |
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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 PropertyAccessor |
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*/ |
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protected $accessor; |
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/** |
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* @var string |
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*/ |
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protected $entityToExtract; |
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/** |
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* @var array |
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*/ |
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protected $propertiesToExtract; |
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/** |
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* @var QueryBuilder |
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*/ |
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protected $queryBuilder = null; |
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public function __construct($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 $entityToExtract |
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*/ |
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public function setEntityToExtract($entityToExtract, array $propertiesToExtract) |
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{ |
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$this->entityToExtract = $entityToExtract; |
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$this->propertiesToExtract = $propertiesToExtract; |
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$this->queryBuilder = null; |
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} |
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/** |
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* @return QueryBuilder |
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*/ |
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public function getQueryBuilder() |
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{ |
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if ($this->queryBuilder instanceof QueryBuilder) { |
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return $this->queryBuilder; |
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} |
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$repository = $this->entityManager->getRepository($this->entityToExtract); |
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if (!$repository instanceof EntityRepository) { |
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throw new \UnexpectedValueException("No repository found for class {$this->entityToExtract}"); |
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} |
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$this->queryBuilder = $repository->createQueryBuilder('o'); |
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if ($this->queryBuilder === null) { |
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throw new \BadMethodCallException('Invalid entityToExtract'); |
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} |
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return $this->queryBuilder; |
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} |
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/** |
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* @param QueryBuilder $queryBuilder |
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*/ |
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public function setQueryBuilder(QueryBuilder $queryBuilder) |
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{ |
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$this->queryBuilder = $queryBuilder; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function extract() |
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{ |
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$entities = $this->getQueryBuilder()->getQuery()->getResult(); |
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$toReturn = []; |
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//Replace relation references |
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foreach ($entities as $key => $entity) { |
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if (!$entity instanceof ImportableInterface) { |
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throw new EntityTypeNotHandledException(get_class($entity)); |
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} |
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$entityData = []; |
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foreach ($this->propertiesToExtract as $property) { |
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$value = $this->accessor->getValue($entity, $property); |
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if ($this->isEntityRelation($value)) { |
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if (!$value instanceof ImportableInterface) { |
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throw new EntityTypeNotHandledException(get_class($value)); |
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} |
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$entityData[$property] = '@' . $value->getImportId(); |
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} elseif ($value instanceof \Traversable) { |
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$entityData[$property] = []; |
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foreach ($value as $k => $v) { |
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if ($this->isEntityRelation($v)) { |
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if (!$v instanceof ImportableInterface) { |
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throw new EntityTypeNotHandledException(get_class($v)); |
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} |
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$entityData[$property][$k] = '@' . $v->getImportId(); |
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} |
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} |
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} else { |
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$entityData[$property] = $value; |
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} |
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} |
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$toReturn[$entity->getImportId()] = $entityData; |
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} |
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return $toReturn; |
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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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