public Person CreateInstance(Observation observation)
{
string key = GetPersonKeyFor(observation);
if (peopleCache.ContainsKey(key)) {
return peopleCache[key];
}
else {
string country = observation.Country;
string personId = observation.PersonId;
Person person = new Person(country, personId);
peopleCache[key] = person;
return person;
}
}
private void Validate(Observation o, int index)
{
if (string.IsNullOrWhiteSpace(o.Country)) {
string errorMessage = string.Format("line ({0}): Country is missing", index);
AddError(errorMessage);
}
if (string.IsNullOrWhiteSpace(o.PersonId)) {
string errorMessage = string.Format("line ({0}): PersonId is missing", index);
AddError(errorMessage);
}
}
private string GetPersonKeyFor(Observation observation)
{
return string.Format("{0}_{1}", observation.PersonId, observation.Country);
}
