/**
* Analyse the data from one question attempt.
* @param question_attempt $qa the data to analyse.
*/
protected function add_data_from_one_attempt(question_attempt $qa)
{
$blankresponse = question_classified_response::no_response();
$partresponses = $qa->classify_response();
foreach ($partresponses as $subpartid => $partresponse) {
if (!isset($this->responses[$subpartid][$partresponse->responseclassid][$partresponse->response])) {
$resp = new stdClass();
$resp->count = 0;
if (!is_null($partresponse->fraction)) {
$resp->fraction = $partresponse->fraction;
} else {
$resp->fraction = $this->responseclasses[$subpartid][$partresponse->responseclassid]->fraction;
}
$this->responses[$subpartid][$partresponse->responseclassid][$partresponse->response] = $resp;
}
$this->responses[$subpartid][$partresponse->responseclassid][$partresponse->response]->count += 1;
}
}