/**
* Create a new ExtendedAssessmentItemRef object from an AssessmentItemRef object.
*
* @param \qtism\data\AssessmentItemRef $assessmentItemRef An AssessmentItemRef object.
* @return \qtism\data\ExtendedAssessmentItemRef An ExtendedAssessmentItemRef object.
*/
public static function createFromAssessmentItemRef(AssessmentItemRef $assessmentItemRef)
{
$identifier = $assessmentItemRef->getIdentifier();
$href = $assessmentItemRef->getHref();
$compactRef = new static($identifier, $href);
$compactRef->setBranchRules($assessmentItemRef->getBranchRules());
$compactRef->setCategories($assessmentItemRef->getCategories());
$compactRef->setFixed($assessmentItemRef->isFixed());
$compactRef->setItemSessionControl($assessmentItemRef->getItemSessionControl());
$compactRef->setTimeLimits($assessmentItemRef->getTimeLimits());
$compactRef->setPreConditions($assessmentItemRef->getPreConditions());
$compactRef->setRequired($assessmentItemRef->isRequired());
$compactRef->setTemplateDefaults($assessmentItemRef->getTemplateDefaults());
return $compactRef;
}
/**
* Get the item sessions related to $assessmentItemRef.
*
* @param \qtism\data\AssessmentItemRef $assessmentItemRef An AssessmentItemRef object.
* @throws \OutOfBoundsException If no item sessions related to $assessmentItemRef are found.
* @return \qtism\runtime\tests\AssessmentItemSessionCollection A collection of AssessmentItemSession objects related to $assessmentItemRef.
*/
public function getAssessmentItemSessions(AssessmentItemRef $assessmentItemRef)
{
if (isset($this->shelves[$assessmentItemRef]) === true) {
return $this->shelves[$assessmentItemRef];
} else {
$itemId = $assessmentItemRef->getIdentifier();
$msg = "No AssessmentItemSession objects bound to '{$itemId}'.";
throw new OutOfBoundsException($msg);
}
}
/**
* @param AssessmentItemRef $itemRef
*
* @return DateTime
*/
public function getItemStartTime($itemRef)
{
$itemResults = array();
$itemStartTime = null;
$ssid = $this->getTestSession()->getSessionId();
$resultServer = \taoResultServer_models_classes_ResultServerStateFull::singleton();
$collection = $resultServer->getVariables("{$ssid}.{$itemRef->getIdentifier()}.{$this->getTestSession()->getCurrentAssessmentItemRefOccurence()}");
foreach ($collection as $vars) {
foreach ($vars as $var) {
if ($var->variable instanceof taoResultServer_models_classes_TraceVariable && $var->variable->getIdentifier() === 'ITEM_START_TIME_SERVER') {
$itemResults[] = $var->variable->getValue();
}
}
}
$itemResults = array_map(function ($ts) {
$itemStart = new DateTime('now', new DateTimeZone('UTC'));
$itemStart->setTimestamp($ts);
return $itemStart;
}, $itemResults);
if (!empty($itemResults)) {
$itemStartTime = min($itemResults);
}
return $itemStartTime;
}
