/**
* Load XML Quiz moodle format.
*
* @param url url of the XML format of an moodle quiz
* @return true if import success false otherwise
*/
public final boolean load(final String url) {
boolean bImportOK = true;
/* Clear all the question */
questions.clear();
/* Load the XML document */
bImportOK = xmlImporter.load(url);
/* Import */
if (bImportOK && (!privLoadQuiz())) {
questions.clear();
bImportOK = false;
}
/* Load completed */
return bImportOK;
}
/**
* Load a XML quiz.
*
* @return true if success false otherwise
*/
private boolean privLoadQuiz() {
/* Variable */
boolean bLoadOk = true;
Category currentCategory = null;
/* Check that the root element is "quiz" */
final Element root = xmlImporter.getRootElement();
if (!(xmlImporter.isElementName(root, "quiz"))) {
xmlImporter.getErrors().addBadElement(root, "quiz");
bLoadOk = false;
}
/* Load all the questions if OK */
final Elements childs = root.getChildElements();
for (int i = 0; (bLoadOk) && (i < childs.size()); i++) {
final Element child = childs.get(i);
if (xmlImporter.isElementName(child, "question")) {
final String str = child.getAttributeValue("type");
if (str.equalsIgnoreCase("category")) {
/* Load category */
currentCategory = doImportCategory(child);
/* Check if loaded */
if (currentCategory == null) {
bLoadOk = false;
break;
}
} else {
final QuestionType type = questions.stringToquestionType(str);
if (type == null) {
xmlImporter
.getErrors()
.addAttrError(
child,
"type",
str,
"multichoice|truefalse|"
+ "shortanswer|matching|cloze|"
+ "description|calculated|"
+ "numerical|essay|category");
} else {
/* Create the question */
final AbstractQuestion ques = questions.createQuestion(type);
ques.setCategory(currentCategory);
/* Load the question */
if (!ques.doImport(xmlImporter, child)) {
bLoadOk = false;
break;
}
/* Add the question */
questions.add(ques);
}
}
} else {
xmlImporter.getWarnings().addUnknonwElement(child);
}
}
/* Return */
return bLoadOk;
}
/**
* Add a question directly.
*
* @param type type of the question
* @return the question added
*/
public final AbstractQuestion addQuestion(final QuestionType type) {
final AbstractQuestion ques = questions.createQuestion(type);
questions.add(ques);
return ques;
}
/**
* Allow the usage of java for-each syntax with question.
*
* @return a valid iterator for question
*/
public final Iterator<AbstractQuestion> iterator() {
return questions.iterator();
}
