public ReturnResult CalculateReturn(
CalculateReturnRequest request)
{
var monthRange = MonthYearRange.CreateForEndMonthAndMonthsBack(request.EndMonth, request.NumberOfMonths);
var returnsInRange = _monthlyReturns.GetMonthsInRange(monthRange).ToArray();
var result = new ReturnResult();
if (returnsInRange.Any())
{
if (returnsInRange.WeDoNotHaveExactlyOneReturnPerMonth(monthRange))
{
result.SetError("Could not find a complete / unique set of months.");
return(result);
}
result = PerformReturnCalculation(request, returnsInRange, result);
}
else
{
result.SetError("Could not find return(s) for month(s).");
}
return(result);
}
public MonthlyReturn[] GetReturnsInRange(
MonthYearRange monthRange,
FeeType feeType)
{
var netReturnSeries = GetReturnSeries(feeType);
if (netReturnSeries == null)
{
return(new MonthlyReturn[0]);
}
return(netReturnSeries.GetReturnsInRange(monthRange));
}
public static bool WeDoNotHaveExactlyOneReturnPerMonth(
this IEnumerable <MonthlyReturn> allReturns,
MonthYearRange monthYearRange)
{
var exactlyOneMonth = true;
monthYearRange.ForEachMonthInRange(
m =>
{
if (allReturns.Count(r => r.MonthYear == m) != 1)
{
exactlyOneMonth = false;
}
});
return(!exactlyOneMonth);
}
public MonthlyReturn[] GetReturnsInRange(
MonthYearRange monthRange)
{
return(_monthlyReturns
.GetMonthsInRange(monthRange).ToArray());;
}
public MonthlyReturn[] GetGrossReturnsInRange(
MonthYearRange monthRange)
{
return(GetReturnsInRange(monthRange, FeeType.GrossOfFees));
}
public OmniDataFileLineModelFactory(
MonthYear endEndMonth)
{
_endMonth = endEndMonth;
_januaryToGivenMonth = CreateRangeFromJanuaryToGivenMonth(endEndMonth);
}
public static IEnumerable <MonthlyReturn> GetMonthsInRange(
this IEnumerable <MonthlyReturn> allReturns,
MonthYearRange monthYearRange)
{
return(allReturns.Where(r => monthYearRange.IsMonthInRange(r.MonthYear)));
}