public List <Entity.Answer> GetAnswers(AnswerParameter p = null)
{
if (p == null)
{
p = new AnswerParameter();
}
//User's answers.
if (p.UserID.HasValue)
{
List <Entity.Answer> answers = null;
if (_UserAnswers.ContainsKey(p.UserID.Value))
{
answers = _UserAnswers[p.UserID.Value];
}
else
{
answers = new List <Entity.Answer>();
//Add null answr
for (int i = 0; i < NrOfQuestions; i++)
{
int qid = i + 1;
answers.Add(new Entity.Answer()
{
QuestionId = qid, Value = null, UserId = p.UserID.Value
});
}
_UserAnswers.Add(p.UserID.Value, answers);
}
return(answers);
}
else
{
//return all answers of all users.
return(_UserAnswers.SelectMany(i => i.Value).ToList());
}
}
public void SyncAnswers(List <Entity.Answer> uiAnswers, int userID)
{
AnswerParameter p = new AnswerParameter();
p.UserID = userID;
uiAnswers.ForEach(a => p.QuestionIDs.Add(a.QuestionId));
var dbAnswers = GetAnswers(p);
foreach (Entity.Answer uiAnswer in uiAnswers)
{
var dbAnswer = dbAnswers.SingleOrDefault(a => a.QuestionId == uiAnswer.QuestionId);
if (dbAnswer == null)
{
//new
dbAnswer = new Entity.Answer()
{
InsertionDate = DateTime.Now
};
dbAnswers.Add(dbAnswer);
}
SetAnswerEntity(uiAnswer, dbAnswer); //Sets changing values to inmemory storage.
dbAnswer.UpdateDate = DateTime.Now;
}
}
