public OvernightIndexedSwap value()
{
Date startDate;
if (effectiveDate_ != null)
{
startDate = effectiveDate_;
}
else
{
Date refDate = Settings.evaluationDate();
// if the evaluation date is not a business day
// then move to the next business day
refDate = calendar_.adjust(refDate);
Date spotDate = calendar_.advance(refDate, new Period(settlementDays_, TimeUnit.Days));
startDate = spotDate + forwardStart_;
if (forwardStart_.length() < 0)
{
startDate = calendar_.adjust(startDate, BusinessDayConvention.Preceding);
}
else
{
startDate = calendar_.adjust(startDate, BusinessDayConvention.Following);
}
}
// OIS end of month default
bool usedEndOfMonth =
isDefaultEOM_ ? calendar_.isEndOfMonth(startDate) : endOfMonth_;
Date endDate = terminationDate_;
if (endDate == null)
{
if (usedEndOfMonth)
{
endDate = calendar_.advance(startDate,
swapTenor_,
BusinessDayConvention.ModifiedFollowing,
usedEndOfMonth);
}
else
{
endDate = startDate + swapTenor_;
}
}
Schedule schedule = new Schedule(startDate, endDate,
new Period(paymentFrequency_),
calendar_,
BusinessDayConvention.ModifiedFollowing,
BusinessDayConvention.ModifiedFollowing,
rule_,
usedEndOfMonth);
double?usedFixedRate = fixedRate_;
if (fixedRate_ == null)
{
OvernightIndexedSwap temp = new OvernightIndexedSwap(type_, nominal_,
schedule,
0.0, // fixed rate
fixedDayCount_,
overnightIndex_, overnightSpread_);
if (engine_ == null)
{
Handle <YieldTermStructure> disc = overnightIndex_.forwardingTermStructure();
Utils.QL_REQUIRE(!disc.empty(), () => "null term structure set to this instance of " +
overnightIndex_.name());
bool includeSettlementDateFlows = false;
IPricingEngine engine = new DiscountingSwapEngine(disc, includeSettlementDateFlows);
temp.setPricingEngine(engine);
}
else
{
temp.setPricingEngine(engine_);
}
usedFixedRate = temp.fairRate();
}
OvernightIndexedSwap ois = new OvernightIndexedSwap(type_, nominal_,
schedule,
usedFixedRate.Value, fixedDayCount_,
overnightIndex_, overnightSpread_);
if (engine_ == null)
{
Handle <YieldTermStructure> disc = overnightIndex_.forwardingTermStructure();
bool includeSettlementDateFlows = false;
IPricingEngine engine = new DiscountingSwapEngine(disc, includeSettlementDateFlows);
ois.setPricingEngine(engine);
}
else
{
ois.setPricingEngine(engine_);
}
return(ois);
}
public override double swapletRate()
{
OvernightIndex index = coupon_.index() as OvernightIndex;
List <Date> fixingDates = coupon_.fixingDates();
List <double> dt = coupon_.dt();
int n = dt.Count();
int i = 0;
double compoundFactor = 1.0;
// already fixed part
Date today = Settings.evaluationDate();
while (fixingDates[i] < today && i < n)
{
// rate must have been fixed
double pastFixing = IndexManager.instance().getHistory(
index.name()).value()[fixingDates[i]];
if (pastFixing == default(double))
{
throw new ApplicationException("Missing " + index.name() + " fixing for "
+ fixingDates[i].ToString());
}
compoundFactor *= (1.0 + pastFixing * dt[i]);
++i;
}
// today is a border case
if (fixingDates[i] == today && i < n)
{
// might have been fixed
try
{
double pastFixing = IndexManager.instance().getHistory(
index.name()).value()[fixingDates[i]];
if (pastFixing != default(double))
{
compoundFactor *= (1.0 + pastFixing * dt[i]);
++i;
}
else
{
; // fall through and forecast
}
}
catch (Exception e)
{
; // fall through and forecast
}
}
// forward part using telescopic property in order
// to avoid the evaluation of multiple forward fixings
if (i < n)
{
Handle <YieldTermStructure> curve = index.forwardingTermStructure();
if (curve.empty())
{
throw new ArgumentException("null term structure set to this instance of" +
index.name());
}
List <Date> dates = coupon_.valueDates();
double startDiscount = curve.link.discount(dates[i]);
double endDiscount = curve.link.discount(dates[n]);
compoundFactor *= startDiscount / endDiscount;
}
double rate = (compoundFactor - 1.0) / coupon_.accrualPeriod();
return(coupon_.gearing() * rate + coupon_.spread());
}
public OvernightIndexedSwap value()
{
Calendar calendar = overnightIndex_.fixingCalendar();
Date startDate;
if (effectiveDate_ != null)
{
startDate = effectiveDate_;
}
else
{
Date referenceDate = Settings.evaluationDate();
Date spotDate = calendar.advance(referenceDate,
new Period(fixingDays_, TimeUnit.Days));
startDate = spotDate + forwardStart_;
}
Date endDate;
if (terminationDate_ != null)
{
endDate = terminationDate_;
}
else
{
if (endOfMonth_)
{
endDate = calendar.advance(startDate, swapTenor_,
BusinessDayConvention.ModifiedFollowing,
endOfMonth_);
}
else
{
endDate = startDate + swapTenor_;
}
}
Schedule schedule = new Schedule(startDate, endDate,
new Period(paymentFrequency_),
calendar,
BusinessDayConvention.ModifiedFollowing,
BusinessDayConvention.ModifiedFollowing,
rule_,
endOfMonth_);
double?usedFixedRate = fixedRate_;
if (fixedRate_ == null)
{
if (overnightIndex_.forwardingTermStructure().empty())
{
throw new ApplicationException("null term structure set to this instance of "
+ overnightIndex_.name());
}
OvernightIndexedSwap temp = new OvernightIndexedSwap(type_, nominal_,
schedule,
0.0, // fixed rate
fixedDayCount_,
overnightIndex_, overnightSpread_);
// ATM on the forecasting curve
//bool includeSettlementDateFlows = false;
temp.setPricingEngine(new DiscountingSwapEngine(
overnightIndex_.forwardingTermStructure()));
usedFixedRate = temp.fairRate();
}
OvernightIndexedSwap ois = new OvernightIndexedSwap(type_, nominal_,
schedule,
usedFixedRate.Value, fixedDayCount_,
overnightIndex_, overnightSpread_);
ois.setPricingEngine(engine_);
return(ois);
}
