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<?php |
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namespace FOS\ElasticaBundle\Doctrine; |
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use Doctrine\Common\Persistence\ManagerRegistry; |
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use FOS\ElasticaBundle\HybridResult; |
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use FOS\ElasticaBundle\Transformer\AbstractElasticaToModelTransformer as BaseTransformer; |
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use FOS\ElasticaBundle\Transformer\HighlightableModelInterface; |
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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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abstract class AbstractElasticaToModelTransformer extends BaseTransformer |
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{ |
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/** |
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* Manager registry. |
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* |
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* @var ManagerRegistry |
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*/ |
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protected $registry = null; |
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/** |
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* Class of the model to map to the elastica documents. |
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* |
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* @var string |
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*/ |
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protected $objectClass = null; |
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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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'hints' => array(), |
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'hydrate' => true, |
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'identifier' => 'id', |
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'ignore_missing' => false, |
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'query_builder_method' => 'createQueryBuilder', |
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); |
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/** |
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* Instantiates a new Mapper. |
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* |
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* @param ManagerRegistry $registry |
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* @param string $objectClass |
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* @param array $options |
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*/ |
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public function __construct(ManagerRegistry $registry, $objectClass, array $options = array()) |
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{ |
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$this->registry = $registry; |
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$this->objectClass = $objectClass; |
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$this->options = array_merge($this->options, $options); |
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} |
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/** |
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* Returns the object class that is used for conversion. |
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* |
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* @return string |
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*/ |
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public function getObjectClass() |
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{ |
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return $this->objectClass; |
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} |
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/** |
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* Transforms an array of elastica objects into an array of |
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* model objects fetched from the doctrine repository. |
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* |
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* @param array $elasticaObjects of elastica objects |
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* |
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* @throws \RuntimeException |
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* |
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* @return array |
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**/ |
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public function transform(array $elasticaObjects) |
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{ |
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$ids = $highlights = array(); |
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foreach ($elasticaObjects as $elasticaObject) { |
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$ids[] = $elasticaObject->getId(); |
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$highlights[$elasticaObject->getId()] = $elasticaObject->getHighlights(); |
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} |
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$objects = $this->findByIdentifiers($ids, $this->options['hydrate']); |
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$objectsCnt = count($objects); |
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$elasticaObjectsCnt = count($elasticaObjects); |
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if (!$this->options['ignore_missing'] && $objectsCnt < $elasticaObjectsCnt) { |
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throw new \RuntimeException(sprintf('Cannot find corresponding Doctrine objects (%d) for all Elastica results (%d). IDs: %s', $objectsCnt, $elasticaObjectsCnt, join(', ', $ids))); |
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}; |
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$propertyAccessor = $this->propertyAccessor; |
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$identifier = $this->options['identifier']; |
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foreach ($objects as $object) { |
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if ($object instanceof HighlightableModelInterface) { |
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$id = $propertyAccessor->getValue($object, $identifier); |
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$object->setElasticHighlights($highlights[(string) $id]); |
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} |
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} |
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// sort objects in the order of ids |
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$idPos = array_flip($ids); |
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usort( |
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$objects, |
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function ($a, $b) use ($idPos, $identifier, $propertyAccessor) { |
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if ($this->options['hydrate']) { |
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return $idPos[(string)$propertyAccessor->getValue( |
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$a, |
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$identifier |
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)] > $idPos[(string)$propertyAccessor->getValue($b, $identifier)]; |
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} else { |
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return $idPos[$a[$identifier]] > $idPos[$b[$identifier]]; |
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} |
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} |
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); |
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return $objects; |
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} |
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public function hybridTransform(array $elasticaObjects) |
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{ |
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$indexedElasticaResults = array(); |
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foreach ($elasticaObjects as $elasticaObject) { |
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$indexedElasticaResults[(string) $elasticaObject->getId()] = $elasticaObject; |
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} |
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$objects = $this->transform($elasticaObjects); |
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$result = array(); |
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foreach ($objects as $object) { |
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if ($this->options['hydrate']) { |
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$id = $this->propertyAccessor->getValue($object, $this->options['identifier']); |
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} else { |
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$id = $object[$this->options['identifier']]; |
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} |
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$result[] = new HybridResult($indexedElasticaResults[(string) $id], $object); |
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} |
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return $result; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getIdentifierField() |
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{ |
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return $this->options['identifier']; |
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} |
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/** |
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* Fetches objects by theses identifier values. |
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* |
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* @param array $identifierValues ids values |
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* @param Boolean $hydrate whether or not to hydrate the objects, false returns arrays |
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* |
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* @return array of objects or arrays |
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*/ |
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abstract protected function findByIdentifiers(array $identifierValues, $hydrate); |
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} |
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FriendsOfSymfony /
FOSElasticaBundle
