public List <Interview> ReadSurveydata(Guid id, int?start, int?numberOfRecords)
{
if (start == null && numberOfRecords != null || start != null && numberOfRecords == null)
{
throw new ArgumentException("Invalid paging arguments");
}
List <Interview> allInterviews;
// ReSharper disable once ConvertSwitchStatementToSwitchExpression
switch (id.ToString())
{
case SP5201Id:
allInterviews = SP5201.LoadAllInterviews();
break;
case PR9012Id:
allInterviews = PR9012_HOUSEHOLD.LoadAllInterviews();
break;
default:
throw new ArgumentException($"Unrecognised survey id {id}");
}
if (start > allInterviews.Count)
{
throw new ArgumentException($"Invalid paging arguments");
}
return(allInterviews
.Skip((start ?? 1) - 1) //-1 to convert 1-based start argument into zero based skip argument
.Take(numberOfRecords ?? allInterviews.Count)
.ToList());
}
public SurveyMetadata ReadSurveyMetadata(Guid id)
{
switch (id.ToString())
{
case SP5201Id:
return(SP5201.ReadMetadata());
case PR9012Id:
return(PR9012_HOUSEHOLD.ReadMetadata());
default:
throw new ArgumentException($"Unrecognised survey id {id}");
}
}