/**
* Set the default value of the Variable.
*
* @param \qtism\common\datatypes\QtiDatatype|null $defaultValue A QtiDatatype object or null.
* @throws \InvalidArgumentException If $defaultValue's type is not compliant with the qti:baseType of the Variable.
*/
public function setDefaultValue(QtiDatatype $defaultValue = null)
{
if (Utils::isBaseTypeCompliant($this->getBaseType(), $defaultValue) && Utils::isCardinalityCompliant($this->getCardinality(), $defaultValue)) {
$this->defaultValue = $defaultValue;
return;
} else {
Utils::throwBaseTypeTypingError($this->getBaseType(), $defaultValue);
}
}
/**
* Set the correct response.
*
* @param \qtism\common\datatypes\QtiDatatype|null $correctResponse A QtiDatatype object or null.
* @throws \InvalidArgumentException If $correctResponse does not match baseType and/or cardinality of the variable.
*/
public function setCorrectResponse(QtiDatatype $correctResponse = null)
{
if ($correctResponse === null) {
$this->correctResponse = null;
} elseif (Utils::isBaseTypeCompliant($this->getBaseType(), $correctResponse) === true && Utils::isCardinalityCompliant($this->getCardinality(), $correctResponse) === true) {
$this->correctResponse = $correctResponse;
} else {
$msg = "The given correct response is not compliant with the associated response variable.";
throw new InvalidArgumentException($msg);
}
}
