/**
* Serialize extref to JSON
*
* @param JsonSerializationVisitor $visitor Visitor
* @param ExtReference $extReference Extref
* @param array $type Type
* @param Context $context Context
* @return string|null
*/
public function serializeExtReferenceToJson(JsonSerializationVisitor $visitor, ExtReference $extReference, array $type, Context $context)
{
try {
return $visitor->visitString($this->converter->getUrl($extReference), $type, $context);
} catch (\InvalidArgumentException $e) {
return $visitor->visitNull(null, $type, $context);
}
}
/**
* Transforms an object (extref) to a string (url)
*
* @param ExtReference|null $extref extref object
* @return string
*/
public function transform($extref)
{
if ($extref === null) {
return '';
}
try {
return $this->converter->getUrl($extref);
} catch (\InvalidArgumentException $e) {
throw new TransformationFailedException(sprintf('Cannot transform extref "%s" to URL', json_encode($extref)), 0, $e);
}
}
/**
* loops our structure recursively to find all $ref objects that need to be converted
* either from that or to that..
*
* @param mixed $input input structure
*
* @return array altered structure with replaced $ref objects
*/
public static function processDynExtRefs($input)
{
if ($input instanceof \stdClass) {
if (!empty(get_object_vars($input))) {
$input = self::processDynExtRefs(get_object_vars($input));
}
return $input;
}
$externalRefFieldName = '$ref';
$internalRefFieldName = 'ref';
if (is_array($input)) {
foreach ($input as $key => $value) {
if ($key === $internalRefFieldName) {
if (is_array($value) && isset($value['$ref']) && isset($value['$id'])) {
$extRef = ExtReference::create($value['$ref'], $value['$id']);
$input[$externalRefFieldName] = self::$extRefConverter->getUrl($extRef);
unset($input[$internalRefFieldName]);
}
} elseif ($key === $externalRefFieldName) {
$extRef = self::$extRefConverter->getExtReference($value);
$input[$internalRefFieldName] = $extRef->jsonSerialize();
unset($input[$externalRefFieldName]);
} else {
if (is_array($value)) {
$value = self::processDynExtRefs($value);
}
$input[$key] = $value;
}
}
}
return $input;
}
