/**
* Marshall a testVariable QTI element in its TestVariable object equivalent.
*
* @param \DOMElement A DOMElement object.
* @return \qtism\data\QtiComponent The corresponding TestVariable object.
*/
protected function unmarshall(DOMElement $element)
{
$baseComponent = parent::unmarshall($element);
if (($variableIdentifier = static::getDOMElementAttributeAs($element, 'variableIdentifier')) !== null) {
$object = new TestVariables($variableIdentifier);
$object->setSectionIdentifier($baseComponent->getSectionIdentifier());
$object->setIncludeCategories($baseComponent->getIncludeCategories());
$object->setExcludeCategories($baseComponent->getExcludeCategories());
if (($baseType = static::getDOMElementAttributeAs($element, 'baseType')) !== null) {
$object->setBaseType(BaseType::getConstantByName($baseType));
}
if (($weightIdentifier = static::getDOMElementAttributeAs($element, 'weightIdentifier')) !== null) {
$object->setWeightIdentifier($weightIdentifier);
}
return $object;
} else {
$msg = "The mandatory attribute 'variableIdentifier' is missing from element '" . $element->localName . "'.";
throw new UnmarshallingException($msg, $element);
}
}
