public function getIndexItems($resource, Metadata $metadata, $properties = null)
{
$indexItems = [];
$accessor = PropertyAccess::createPropertyAccessor();
//walk over each field of the property that should get indexed
foreach ($metadata->getProperties() as $propertyNode) {
//get the right indexType
$type = $this->collector->getType($propertyNode->getType());
//get the IndexItems of the right IndexType
$newIndexItems = $type->index($accessor->getValue($resource, $propertyNode->getProperty()), $propertyNode->getOptions(), $properties);
if ($newIndexItems) {
foreach ($newIndexItems as $indexItem) {
//set fieldname
if ((empty($properties) || in_array('fieldName', $properties)) && $indexItem->getFieldName() == null) {
$indexItem->setFieldName($metadata->getHumanizedBundleName() . '_' . strtolower($metadata->getEntityName() . '_' . strtolower($propertyNode->getProperty())));
}
$indexItems[] = $indexItem;
}
}
}
return $indexItems;
}
/**
* Return the Type
*
* @param $type
* @return TypeInterface
*/
protected function getType($type)
{
return $this->collector->getType($type);
}
