public Guid AddCandidate(string surname, string forenames)
{
if (string.IsNullOrWhiteSpace(surname))
{
throw new ArgumentException("Surname must have a value.", "surname");
}
if (string.IsNullOrWhiteSpace(forenames))
{
throw new ArgumentException("Forenames must have a value.", "forenames");
}
var assessmentResult = new AssessmentResult(surname, forenames);
if (this.results.Contains(assessmentResult))
{
throw new UniqueConstraintException(string.Format("A candidate with name \"{0}, {1}\" alread exists.", surname, forenames));
}
this.results.Add(assessmentResult);
return assessmentResult.Id;
}
public void SetCandidateNames(Guid id, string surname, string forenames)
{
if (string.IsNullOrWhiteSpace(surname))
{
throw new ArgumentException("Surname must have a value.", "surname");
}
if (string.IsNullOrWhiteSpace(forenames))
{
throw new ArgumentException("Forenames must have a value.", "forenames");
}
var existingResult = this.results.Single(r => r.Id == id);
var newResult = new AssessmentResult(id, surname, forenames, existingResult.Result);
if (this.results.Where(r => r.Id != existingResult.Id).Any(r => r.Surname == surname && r.Forenames == forenames))
{
throw new UniqueConstraintException(string.Format("A candidate with name \"{0}, {1}\" alread exists.", surname, forenames));
}
this.results.Remove(existingResult);
this.results.Add(newResult);
}
public void SetCandidateResult(Guid id, decimal? result)
{
if (result.HasValue)
{
if (result < 0)
{
throw new ArgumentOutOfRangeException("result", "Result be a positive number.");
}
if (this.TotalMarks.HasValue && result > this.TotalMarks)
{
throw new ArgumentOutOfRangeException(
"result", "Result must be lower than or equal to the total marks.");
}
}
var existingResult = this.results.Single(r => r.Id == id);
var newResult = new AssessmentResult(id, existingResult.Surname, existingResult.Forenames, result);
this.results.Remove(existingResult);
this.results.Add(newResult);
}