/// <summary>
/// Check whether the rate is within the range
/// </summary>
/// <param name="session"></param>
/// <param name="checkRate"></param>
/// <returns></returns>
public static bool CheckHistoricalExRate(IDalSession session, IHistoricalExRate checkRate, out string errMessage)
{
bool success = true;
errMessage = "";
if (checkRate != null)
{
IList<IHistoricalExRate> previousRates = GetHistoricalExRates(session,
checkRate.Currency, checkRate.RateDate.AddDays(-5),
checkRate.RateDate.AddDays(-1));
if (previousRates != null && previousRates.Count > 0)
{
decimal prevRate = previousRates.OrderByDescending(x => x.RateDate).FirstOrDefault().Rate;
if (prevRate != 0M)
{
decimal diff = Math.Abs((prevRate - checkRate.Rate) / prevRate);
if (diff > 0.05M)
{
errMessage = string.Format("The new Exchange Rate is {0}% different from the previous Exchange Rate.", (diff * 100).ToString("0.0"));
success = false;
}
}
}
}
return success;
}
public static bool CheckNewRate(IDalSession session, IHistoricalExRate newRate, bool raiseErr, out string errMessage)
{
bool success = true;
errMessage = "";
if (!HistoricalExRateMapper.CheckHistoricalExRate(session, newRate, out errMessage) && !string.IsNullOrEmpty(errMessage))
{
if (raiseErr)
throw new ApplicationException(errMessage);
else
success = false;
}
return success;
}
public NavCashPosition(InstrumentSize Size, decimal ExchangeRateUsed,
IHistoricalExRate ExchangeRateRecord)
: base(Size, ExchangeRateUsed, ExchangeRateRecord)
{
}
public static bool CheckNewRate(IDalSession session, IHistoricalExRate newRate)
{
string errMessage = "";
return CheckNewRate(session, newRate, true, out errMessage);
}
public static bool Update(IDalSession session, IHistoricalExRate historicalExRate)
{
session.InsertOrUpdate(historicalExRate);
return true;
}
public NavFundPosition(InstrumentSize Size, Price ClosingPriceUsed, decimal ExchangeRateUsed,
IPriceDetail ClosingPriceRecord, IHistoricalExRate ExchangeRateRecord)
: base(Size, ClosingPriceUsed, ExchangeRateUsed, ClosingPriceRecord, ExchangeRateRecord)
{
}