public bool CreateItem <T>(T item, ICrudRepository <T> repository, GenericOperationResult <T> or) where T : class, new()
{
if (item == null)
{
or.AddMessage(_localizedMessagesService.GetErrorMessage(ErrorMessageKeys.NullObjectReference));
or.SetFail();
return(false);
}
try
{
var success = repository.CreateItem(item);
if (success)
{
or.SetData(item);
return(true);
}
else
{
or.AddMessage(_localizedMessagesService.GetErrorMessage(ErrorMessageKeys.RepositoryError));
return(false);
}
}
catch (Exception e)
{
or.AddMessage(_localizedMessagesService.GetErrorMessage(ErrorMessageKeys.RepositoryError));
return(false);
}
}
public GenericOperationResult <IEnumerable <Quiz> > GetAvailableQuies(string studentName, QuizGetType type)
{
GenericOperationResult <IEnumerable <Quiz> > result =
OperationResult.GetGenericResultObject <IEnumerable <Quiz> >();
// check student
User student = _userService.GetUser(studentName);
if (student == null)
{
result.AddMessage(_messagesService.GetErrorMessage(ErrorMessageKeys.UserNotFound));
return(result);
}
else
{
switch (type)
{
case QuizGetType.Pregenarated:
return(GetPredefinedQuizes(student));
break;
}
}
return(result);
}
public bool GetItem <T>(int id, ICrudRepository <T> repository, GenericOperationResult <T> or) where T : class, new()
{
if (id == 0)
{
or.AddMessage(_localizedMessagesService.GetErrorMessage(ErrorMessageKeys.InvalidId));
return(false);
}
try
{
var item = repository.GetItem(id);
or.SetData(item);
return(true);
}
catch (Exception e)
{
or.AddMessage(_localizedMessagesService.GetErrorMessage(ErrorMessageKeys.RepositoryError));
return(false);
}
}
public bool GetItems <T>(ICrudRepository <T> repository, GenericOperationResult <IEnumerable <T> > or)
{
try
{
var items = repository.GetAllItems();
or.SetData(items);
return(true);
}
catch (Exception e)
{
or.AddMessage(_localizedMessagesService.GetErrorMessage(ErrorMessageKeys.RepositoryError));
return(false);
}
}