/** Method calcFeedBack. */
private void calcFeedBack() {
if (feedbacktesting) {
List<?> el_ofts = el_assessment.selectNodes("outcomes_processing/outcomes_feedback_test");
feedbackavailable = false;
for (Iterator<?> it_oft = el_ofts.iterator(); it_oft.hasNext(); ) {
Element el_oft = (Element) it_oft.next();
// <!ELEMENT outcomes_feedback_test (test_variable , displayfeedback+)>
Element el_testvar = (Element) el_oft.selectSingleNode("test_variable");
// must exist: dtd
// <!ELEMENT test_variable (variable_test | and_test | or_test |
// not_test)>
Element el_varandornot =
(Element) el_testvar.selectSingleNode("variable_test|and_test|or_test|not_test");
String elname = el_varandornot.getName();
ScoreBooleanEvaluable sbe = QTIHelper.getSectionBooleanEvaluableInstance(elname);
float totalscore = getScore();
boolean fulfilled = sbe.eval(el_varandornot, totalscore);
if (fulfilled) {
// get feedback
Element el_displayfeedback = (Element) el_oft.selectSingleNode("displayfeedback");
String linkRefId = el_displayfeedback.attributeValue("linkrefid");
// must exist (dtd)
// ignore feedbacktype, since we section or assess feedback only
// accepts material, no hints or solutions
Element el_resolved =
(Element)
el_assessment.selectSingleNode(".//assessfeedback[@ident='" + linkRefId + "']");
getOutput().setEl_response(new AssessFeedback(el_resolved));
// give the whole assessmentfeedback to render
feedbackavailable = true;
}
}
}
}
public void buildDocument() {
final File unzippedRoot = fileresourceManager.unzipFileResource(resourceable);
// with VFS FIXME:pb:c: remove casts to LocalFileImpl and LocalFolderImpl if no longer needed.
final VFSContainer vfsUnzippedRoot = new LocalFolderImpl(unzippedRoot);
final VFSItem vfsQTI = vfsUnzippedRoot.resolve("qti.xml");
// getDocument(..) ensures that InputStream is closed in every case.
document = QTIHelper.getDocument((LocalFileImpl) vfsQTI);
}
public String extractTimeLimitFromDocument() {
if (isNullDocument()) {
return "";
}
String timeLimit = "-";
final Element el_assess = (Element) document.selectSingleNode("questestinterop/assessment");
final Element el_duration = (Element) el_assess.selectSingleNode("duration");
if (el_duration != null) {
final long dur = QTIHelper.parseISODuration(el_duration.getTextTrim());
final long min = dur / 1024 / 60;
final long sec = (dur - (min * 60 * 1024)) / 1024;
timeLimit = "" + min + "' " + sec + "''";
}
return timeLimit;
}
/**
* <!ELEMENT and_selection (selection_metadata | and_selection | or_selection | not_selection)+>
*/
@Override
public void buildXPathExpression(
final Element selectionElement,
final StringBuilder expr,
final boolean not_switch,
final boolean use_switch) {
// assert: use_switch always true
if (!use_switch) {
throw new RuntimeException("error in not_selection; use_switch was switched off");
}
final List elems = selectionElement.elements();
final Element child = (Element) elems.get(0);
final String name = child.getName();
final ExpressionBuilder eb = QTIHelper.getExpressionBuilder(name);
eb.buildXPathExpression(child, expr, !not_switch, true);
}
/**
* Method setUp.
*
* @param assessInstance
*/
public void setUp(AssessmentInstance assessInstance) {
this.assessInstance = assessInstance;
init();
Document el_questestinterop = assessInstance.getResolver().getQTIDocument();
el_assessment = (Element) el_questestinterop.selectSingleNode("questestinterop/assessment");
ident = el_assessment.attributeValue("ident");
title = el_assessment.attributeValue("title");
Element dur = (Element) el_assessment.selectSingleNode("duration");
if (dur == null) {
durationLimit = -1; // no limit
} else {
String sdur = dur.getText();
durationLimit = QTIHelper.parseISODuration(sdur);
if (durationLimit == 0) durationLimit = -1; // Assesst Designer fix
}
// get objectives
Element el_objectives = (Element) el_assessment.selectSingleNode("objectives");
if (el_objectives != null) objectives = new Objectives(el_objectives);
// set feedback, hint, and solutions switches
// <!ENTITY % I_FeedbackSwitch " feedbackswitch (Yes | No ) 'Yes'">
// <!ENTITY % I_HintSwitch " hintswitch (Yes | No ) 'Yes'">
// <!ENTITY % I_SolutionSwitch " solutionswitch (Yes | No ) 'Yes'">
// <!ELEMENT assessment (qticomment? , duration? , qtimetadata* ,
// objectives* , assessmentcontrol* , rubric* , presentation_material? ,
// outcomes_processing* , assessproc_extension? , assessfeedback* ,
// selection_ordering? , reference? , (sectionref | section)+)>
// <!ELEMENT assessmentcontrol (qticomment?)>
Element el_control = (Element) el_assessment.selectSingleNode("assessmentcontrol");
if (el_control != null) {
String feedbackswitch = el_control.attributeValue("feedbackswitch");
String hintswitch = el_control.attributeValue("hintswitch");
String solutionswitch = el_control.attributeValue("solutionswitch");
boolean feedback = (feedbackswitch == null) ? true : feedbackswitch.equals("Yes");
boolean hints = (hintswitch == null) ? true : hintswitch.equals("Yes");
boolean solutions = (solutionswitch == null) ? true : solutionswitch.equals("Yes");
switches = new Switches(feedback, hints, solutions);
}
// scoring model and outcomes processing
Element el_outpro = (Element) el_assessment.selectSingleNode("outcomes_processing");
if (el_outpro != null) {
// get the scoring model: we need it later for calculating the score
// <!ENTITY % I_ScoreModel " scoremodel CDATA #IMPLIED">
scoremodel = el_outpro.attributeValue("scoremodel");
// may be null -> then assume SumOfScores
// set the cutvalue if given (only variable score)
cutvalue =
QTIHelper.getFloatAttribute(el_outpro, "outcomes/decvar[@varname='SCORE']", "cutvalue");
List<?> el_oft = el_outpro.selectNodes("outcomes_feedback_test");
if (el_oft.size() != 0) {
feedbacktesting = true;
}
}
initSections(el_assessment, switches);
init();
}
