private IntHierarchy getTestIndex(int testId)
{
for (int i = 0; i < tests.Count; i++)
{
if (tests.ElementAt(i).Id == testId)
{
IntHierarchy hi = new IntHierarchy(new Test().GetType());
hi.value = i;
return(hi);
}
}
throw new GoTestObjectNotFound();
}
private IntHierarchy getQuestionIndex(int questionId)
{
for (int i = 0; i < questions.Count; i++)
{
if (questions.ElementAt(i).Id == questionId)
{
IntHierarchy hi = new IntHierarchy(new Question().GetType());
hi.value = i;
return(hi);
}
}
throw new GoTestObjectNotFound();
}
public void deleteQuestion(int id)
{
IntHierarchy hi = searcher.getQuestionPosition(store, id);
if (!hi.getLastListType().Equals(new Question().GetType()))
{
throw new GoTestObjectNotFound();
}
else
{
store.ElementAt(hi.value).Tests.ElementAt(hi.getChild().value).
Questions.ElementAt(hi.getChild().getChild().value).IsDeleted = true;
notifyObservers();
}
}
public void update(int id, Unswer newVersion)
{
IntHierarchy hi = searcher.getQuestionPosition(store, id);
int questionIndex = -1;
int unswerIndex = -1;
if (!hi.getLastListType().Equals(new Unswer().GetType()))
{
throw new GoTestObjectNotFound();
}
else
{
questionIndex = hi.getChild().getChild().value;
unswerIndex = hi.getChild().getChild().getChild().value;
}
int rightUnswersCount = 1;
Question question = store.ElementAt(hi.value).Tests.ElementAt(hi.getChild().value).
Questions.ElementAt(questionIndex);
for (int i = 0; i < question.Unswers.Count; i++)
{
if (question.Unswers.ElementAt(i).IsRight)
{
rightUnswersCount++;
}
}
if (rightUnswersCount > 1)
{
question.QuestionsType = QuestionTypes.multiplyAnswer;
}
else
{
question.QuestionsType = QuestionTypes.singleAnswer;
}
newVersion.Id = store.ElementAt(hi.value).Tests.ElementAt(hi.getChild().value).
Questions.ElementAt(questionIndex).Unswers.ElementAt(unswerIndex).Id;
store.ElementAt(hi.value).Tests.ElementAt(hi.getChild().value).
Questions.ElementAt(questionIndex).Unswers.
RemoveAt(unswerIndex);
store.ElementAt(hi.value).Tests.ElementAt(hi.getChild().value).
Questions.ElementAt(questionIndex).Unswers.
Insert(unswerIndex, newVersion);
notifyObservers();
}
private IntHierarchy getChildIndex(int id)
{
for (int i = 0; i < tests.Count; i++)
{
try
{
IntHierarchy hi = new IntHierarchy(new Test().GetType(),
tests.ElementAt(i).searchObjectIndex(id));
hi.value = i;
return(hi);
}
catch (GoTestObjectNotFound ex)
{
}
}
throw new GoTestObjectNotFound();
}
private IntHierarchy getChildIndex(int id)
{
for (int i = 0; i < questions.Count; i++)
{
try
{
IntHierarchy hi = new IntHierarchy(new Unswer().GetType());
hi.value = questions.ElementAt(i).getUnswerIndex(id);
IntHierarchy hi2 = new IntHierarchy(new Question().GetType(), hi);
hi2.value = i;
return(hi2);
}
catch (GoTestObjectNotFound ex)
{
}
}
throw new GoTestObjectNotFound();
}
public void update(int id, Question newVersion)
{
int questionIndex = -1;
IntHierarchy hi = searcher.getQuestionPosition(store, id);
if (!hi.getLastListType().Equals(new Question().GetType()))
{
throw new GoTestObjectNotFound();
}
else
{
questionIndex = hi.getChild().getChild().value;
}
newVersion.Id = store.ElementAt(hi.value).Tests.ElementAt(hi.getChild().value).
Questions.ElementAt(questionIndex).Id;
store.ElementAt(hi.value).Tests.ElementAt(hi.getChild().value).
Questions.RemoveAt(questionIndex);
store.ElementAt(hi.value).Tests.ElementAt(hi.getChild().value).
Questions.Insert(questionIndex, newVersion);
notifyObservers();
}
public void update(int id, Test test)
{
try
{
IntHierarchy hi = searcher.getTestPosition(store, id);
if (!hi.getLastListType().Equals(new Test().GetType()))
{
throw new GoTestObjectNotFound();
}
else
{
test.Id = store.ElementAt(hi.value).Tests.ElementAt(hi.getChild().value).Id;
store.ElementAt(hi.value).Tests.RemoveAt(hi.getChild().value);
store.ElementAt(hi.value).Tests.Insert(hi.getChild().value, test);
notifyObservers();
}
}
catch (Exception ex)
{
ExceptionHandler.getInstance().processing(ex);
}
}