79 lines
2.1 KiB
PHP
79 lines
2.1 KiB
PHP
<?php
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namespace FOQ\ElasticaBundle\Transformer;
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use Elastica_Document;
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use Traversable;
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use ArrayAccess;
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use RuntimeException;
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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 $fields the keys we want to have in the returned array
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* @return Elastica_Document
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**/
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public function transform($object, array $fields)
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{
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$class = get_class($object);
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$array = array();
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foreach ($fields as $key) {
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$getter = 'get'.ucfirst($key);
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if (!method_exists($class, $getter)) {
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throw new RuntimeException(sprintf('The getter %s::%s does not exist', $class, $getter));
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}
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$array[$key] = $this->normalizeValue($object->$getter());
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}
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$identifierGetter = 'get'.ucfirst($this->options['identifier']);
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$identifier = $object->$identifierGetter();
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return new Elastica_Document($identifier, array_filter($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 $value
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* @return string|array
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*/
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protected function normalizeValue($value)
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{
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if (is_array($value) || $value instanceof Traversable || $value instanceof ArrayAccess) {
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$value = array_map(function($v) {
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return (string) $v;
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}, is_array($value) ? $value : iterator_to_array($value));
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} else {
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$value = (string) $value;
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}
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return $value;
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}
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}
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