public Person CreateInstance(Observation observation)
{
int id = idMap.GetIdFor(observation);
if (peopleCache.ContainsKey(id))
{
return peopleCache[id];
}
else
{
string country = observation.Country;
string personId = observation.PersonId;
Person person = new Person(country, personId);
peopleCache[id] = person;
return person;
}
}
private static void RaiseErrorIfNoObservationFound(Observation[] tmp)
{
if (tmp == null || tmp.Length == 0)
{
string errorMessage = "no observations found";
throw new BusinessException(errorMessage);
}
}
private static void ValidateObservation(Observation observation)
{
if (string.IsNullOrEmpty(observation.Country))
{
throw new BusinessException("country field in observation cannot be null");
}
if (string.IsNullOrEmpty(observation.HouseholdId))
{
throw new BusinessException("householdId field in observation cannot be null");
}
if (string.IsNullOrEmpty(observation.PersonId))
{
throw new BusinessException("personId field in observation cannot be null");
}
}
public int GetIdFor(Observation observation)
{
string key = MakeSurrogateKey(observation.Country, observation.HouseholdId, observation.PersonId);
return GetIdForKey(key);
}