131 lines
3.6 KiB
PHP
Executable file
131 lines
3.6 KiB
PHP
Executable file
<?php
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namespace FOS\ElasticaBundle\Doctrine;
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use FOS\ElasticaBundle\HybridResult;
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use FOS\ElasticaBundle\Transformer\ElasticaToModelTransformerInterface;
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use FOS\ElasticaBundle\Transformer\HighlightableModelInterface;
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use Elastica_Document;
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use Symfony\Component\Form\Util\PropertyPath;
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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 implements ElasticaToModelTransformerInterface
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{
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/**
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* Manager registry
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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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'hydrate' => true,
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'identifier' => 'id'
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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 object $registry
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* @param string $objectClass
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* @param array $options
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*/
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public function __construct($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 of elastica objects
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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, $this->options['hydrate']);
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if (count($objects) < count($elasticaObjects)) {
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throw new \RuntimeException('Cannot find corresponding Doctrine objects for all Elastica results.');
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};
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foreach ($objects as $object) {
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if ($object instanceof HighlightableModelInterface) {
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$object->setElasticHighlights($highlights[$object->getId()]);
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}
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}
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$identifierProperty = new PropertyPath($this->options['identifier']);
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// sort objects in the order of ids
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$idPos = array_flip($ids);
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usort($objects, function($a, $b) use ($idPos, $identifierProperty)
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{
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return $idPos[$identifierProperty->getValue($a)] > $idPos[$identifierProperty->getValue($b)];
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});
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return $objects;
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}
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public function hybridTransform(array $elasticaObjects)
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{
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$objects = $this->transform($elasticaObjects);
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$result = array();
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for ($i = 0; $i < count($elasticaObjects); $i++) {
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$result[] = new HybridResult($elasticaObjects[$i], $objects[$i]);
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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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* @return array of objects or arrays
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*/
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protected abstract function findByIdentifiers(array $identifierValues, $hydrate);
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}
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