114 lines
3.6 KiB
PHP
114 lines
3.6 KiB
PHP
<?php
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namespace FOQ\ElasticaBundle\Transformer;
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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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class ModelToElasticaAutoTransformer implements ModelToElasticaTransformerInterface
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{
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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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* Instanciates a new Mapper
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*
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* @param array $options
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*/
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public function __construct(array $options = array())
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{
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$this->options = array_merge($this->options, $options);
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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 $fields the keys we want to have in the returned array
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*
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* @return Elastica_Document
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**/
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public function transform($object, array $fields)
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{
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$identifierProperty = new PropertyPath($this->options['identifier']);
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$identifier = $identifierProperty->getValue($object);
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$document = new \Elastica_Document($identifier);
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foreach ($fields as $key => $mapping) {
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$property = new PropertyPath($key);
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if (isset($mapping['type']) && in_array($mapping['type'], array('nested', 'object'))) {
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$submapping = $mapping['properties'];
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$subcollection = $property->getValue($object);
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$document->add($key, $this->transformNested($subcollection, $submapping));
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} else if (isset($mapping['type']) && $mapping['type'] == 'multi_field') {
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throw new \Exception('Please implement me !');
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} else if (isset($mapping['type']) && $mapping['type'] == 'attachment') {
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$attachment = $property->getValue($object);
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if ($attachment instanceof \SplFileInfo) {
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$document->addFile($key, $attachment->getPathName());
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} else {
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$document->addFileContent($key, $attachment);
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}
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} else {
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$document->add($key, $this->normalizeValue($property->getValue($object)));
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}
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}
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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 $objects the object to convert
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* @param array $fields the keys we want to have in the returned array
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* @return array
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*/
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protected function transformNested($objects, array $fields)
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{
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$documents = array();
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foreach($objects as $object) {
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$documents[] = $this->transform($object, $fields)->getData();
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}
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return $documents;
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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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{
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if ($v instanceof \DateTime) {
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$v = (int)$v->format('U');
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} elseif (!is_scalar($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);
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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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