composite-pk.cs

public Preference GetDefaultValuePreference(int domain, string name)
{
	if (domain < 0) throw new ArgumentOutOfRangeException(Resources.InvalidDomainMustBeZeroOrGreater);
	if (string.IsNullOrEmpty(name)) throw new ArgumentNullException("name");

	var preference = _unitOfWork.CurrentSession.Get<Preference>(new Preference { DomainId = domain, ElementId = name });
	return preference ?? new Preference { DefaultValue = string.Empty, DomainId = domain, ElementId = name };
}