/**
* Unmarshall a DOMElement object corresponding to a QTI responseDeclaration element.
*
* @param DOMElement $element A DOMElement object.
* @return QtiComponent A ResponseDeclaration object.
* @throws UnmarshallingException
*/
protected function unmarshall(DOMElement $element)
{
try {
$baseComponent = parent::unmarshall($element);
$object = new ResponseDeclaration($baseComponent->getIdentifier());
$object->setBaseType($baseComponent->getBaseType());
$object->setCardinality($baseComponent->getCardinality());
$object->setDefaultValue($baseComponent->getDefaultValue());
$correctResponseElts = self::getChildElementsByTagName($element, 'correctResponse');
if (count($correctResponseElts) === 1) {
$correctResponseElt = $correctResponseElts[0];
$marshaller = $this->getMarshallerFactory()->createMarshaller($correctResponseElt, array($baseComponent->getBaseType()));
$object->setCorrectResponse($marshaller->unmarshall($correctResponseElt));
}
$mappingElts = self::getChildElementsByTagName($element, 'mapping');
if (count($mappingElts) === 1) {
$mappingElt = $mappingElts[0];
$marshaller = $this->getMarshallerFactory()->createMarshaller($mappingElt, array($baseComponent->getBaseType()));
$object->setMapping($marshaller->unmarshall($mappingElt));
}
$areaMappingElts = self::getChildElementsByTagName($element, 'areaMapping');
if (count($areaMappingElts) === 1) {
$areaMappingElt = $areaMappingElts[0];
$marshaller = $this->getMarshallerFactory()->createMarshaller($areaMappingElt);
$object->setAreaMapping($marshaller->unmarshall($areaMappingElt));
}
return $object;
} catch (InvalidArgumentException $e) {
$msg = "An unexpected error occured while unmarshalling the responseDeclaration.";
throw new UnmarshallingException($msg, $element, $e);
}
}