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<?php |
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namespace FOS\ElasticaBundle\Transformer; |
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use FOS\ElasticaBundle\Event\TransformEvent; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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use Symfony\Component\PropertyAccess\PropertyAccessorInterface; |
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use Elastica\Document; |
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/** |
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* Maps Elastica documents with Doctrine objects |
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* This mapper assumes an exact match between |
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* elastica documents ids and doctrine object ids. |
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*/ |
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class ModelToElasticaAutoTransformer implements ModelToElasticaTransformerInterface |
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{ |
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/** |
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* @var EventDispatcherInterface |
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*/ |
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protected $dispatcher; |
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/** |
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* Optional parameters. |
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* |
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* @var array |
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*/ |
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protected $options = array( |
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'identifier' => 'id', |
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); |
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/** |
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* PropertyAccessor instance. |
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* |
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* @var PropertyAccessorInterface |
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*/ |
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protected $propertyAccessor; |
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/** |
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* Instanciates a new Mapper. |
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* |
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* @param array $options |
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* @param EventDispatcherInterface $dispatcher |
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*/ |
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public function __construct(array $options = array(), EventDispatcherInterface $dispatcher = null) |
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{ |
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$this->options = array_merge($this->options, $options); |
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$this->dispatcher = $dispatcher; |
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} |
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/** |
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* Set the PropertyAccessor. |
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* |
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* @param PropertyAccessorInterface $propertyAccessor |
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*/ |
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public function setPropertyAccessor(PropertyAccessorInterface $propertyAccessor) |
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{ |
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$this->propertyAccessor = $propertyAccessor; |
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} |
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/** |
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* Transforms an object into an elastica object having the required keys. |
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* |
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* @param object $object the object to convert |
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* @param array $fields the keys we want to have in the returned array |
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* |
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* @return Document |
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**/ |
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public function transform($object, array $fields) |
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{ |
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$identifier = $this->propertyAccessor->getValue($object, $this->options['identifier']); |
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$document = $this->transformObjectToDocument($object, $fields, $identifier); |
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return $document; |
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} |
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/** |
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* transform a nested document or an object property into an array of ElasticaDocument. |
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* |
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* @param array|\Traversable|\ArrayAccess $objects the object to convert |
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* @param array $fields the keys we want to have in the returned array |
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* |
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* @return array |
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*/ |
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protected function transformNested($objects, array $fields) |
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{ |
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if (is_array($objects) || $objects instanceof \Traversable || $objects instanceof \ArrayAccess) { |
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$documents = array(); |
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foreach ($objects as $object) { |
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$document = $this->transformObjectToDocument($object, $fields); |
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$documents[] = $document->getData(); |
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} |
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return $documents; |
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} elseif (null !== $objects) { |
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$document = $this->transformObjectToDocument($objects, $fields); |
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return $document->getData(); |
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} |
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return array(); |
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} |
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/** |
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* Attempts to convert any type to a string or an array of strings. |
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* |
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* @param mixed $value |
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* |
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* @return string|array |
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*/ |
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protected function normalizeValue($value) |
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{ |
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$normalizeValue = function (&$v) { |
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if ($v instanceof \DateTime) { |
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$v = $v->format('c'); |
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} elseif (!is_scalar($v) && !is_null($v)) { |
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$v = (string) $v; |
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} |
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}; |
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if (is_array($value) || $value instanceof \Traversable || $value instanceof \ArrayAccess) { |
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$value = is_array($value) ? $value : iterator_to_array($value, false); |
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array_walk_recursive($value, $normalizeValue); |
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} else { |
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$normalizeValue($value); |
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} |
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return $value; |
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} |
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/** |
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* Transforms the given object to an elastica document |
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* |
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* @param object $object the object to convert |
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* @param array $fields the keys we want to have in the returned array |
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* @param string $identifier the identifier for the new document |
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* @return Document |
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*/ |
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protected function transformObjectToDocument($object, array $fields, $identifier = '') |
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{ |
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$document = new Document($identifier); |
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foreach ($fields as $key => $mapping) { |
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if ($key == '_parent') { |
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$property = (null !== $mapping['property']) ? $mapping['property'] : $mapping['type']; |
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$value = $this->propertyAccessor->getValue($object, $property); |
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$document->setParent($this->propertyAccessor->getValue($value, $mapping['identifier'])); |
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continue; |
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} |
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$path = isset($mapping['property_path']) ? |
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$mapping['property_path'] : |
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$key; |
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if (false === $path) { |
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continue; |
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} |
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$value = $this->propertyAccessor->getValue($object, $path); |
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if (isset($mapping['type']) && in_array( |
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$mapping['type'], array('nested', 'object') |
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) && isset($mapping['properties']) && !empty($mapping['properties']) |
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) { |
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/* $value is a nested document or object. Transform $value into |
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* an array of documents, respective the mapped properties. |
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*/ |
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$document->set($key, $this->transformNested($value, $mapping['properties'])); |
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continue; |
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} |
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if (isset($mapping['type']) && $mapping['type'] == 'attachment') { |
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// $value is an attachment. Add it to the document. |
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if ($value instanceof \SplFileInfo) { |
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$document->addFile($key, $value->getPathName()); |
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} else { |
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$document->addFileContent($key, $value); |
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} |
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continue; |
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} |
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$document->set($key, $this->normalizeValue($value)); |
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} |
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if ($this->dispatcher) { |
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$event = new TransformEvent($document, $fields, $object); |
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$this->dispatcher->dispatch(TransformEvent::POST_TRANSFORM, $event); |
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$document = $event->getDocument(); |
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} |
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return $document; |
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} |
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} |
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FriendsOfSymfony /
FOSElasticaBundle
