//-------------------------------------------------------------------------
public virtual void calibration_test()
{
RatesProvider result2 = CALIBRATOR.calibrate(CURVE_GROUP_DEFN, ALL_QUOTES, REF_DATA);
// pv test
CurveNode[] fwd3Nodes = CURVES_NODES[0][0];
IList <ResolvedTrade> fwd3Trades = new List <ResolvedTrade>();
for (int i = 0; i < fwd3Nodes.Length; i++)
{
fwd3Trades.Add(fwd3Nodes[i].resolvedTrade(1d, ALL_QUOTES, REF_DATA));
}
for (int i = 0; i < FWD6_NB_NODES; i++)
{
MultiCurrencyAmount pvIrs2 = SWAP_PRICER.presentValue(((ResolvedSwapTrade)fwd3Trades[i]).Product, result2);
assertEquals(pvIrs2.getAmount(GBP).Amount, 0.0, TOLERANCE_PV);
}
// regression test for curve
DiscountFactors dsc = result2.discountFactors(GBP);
double prevDsc = 0d;
for (int i = 0; i < 121; ++i)
{
double time = ((double)i);
double curDsc = dsc.discountFactor(time);
if (i > 59)
{
double fwd = prevDsc / curDsc - 1d;
assertEquals(fwd, 0.042, 2d * ONE_BP);
}
assertEquals(curDsc, DSC_EXP.get(i), ONE_PC);
prevDsc = curDsc;
}
}
private RepoCurveDiscountFactors(DiscountFactors discountFactors, RepoGroup repoGroup)
{
JodaBeanUtils.notNull(discountFactors, "discountFactors");
JodaBeanUtils.notNull(repoGroup, "repoGroup");
this.discountFactors = discountFactors;
this.repoGroup = repoGroup;
}
//-------------------------------------------------------------------------
public FxForwardRates fxForwardRates(CurrencyPair currencyPair)
{
DiscountFactors @base = discountFactors(currencyPair.Base);
DiscountFactors counter = discountFactors(currencyPair.Counter);
return(DiscountFxForwardRates.of(currencyPair, fxRateProvider, @base, counter));
};
static BondFuturesJpyEnd2EndTest()
{
for (int i = 0; i < NB_UND_BONDS; ++i)
{
PeriodicSchedule periodSchedule = PeriodicSchedule.of(START_DATE[i], MATURITY_DATE[i], Frequency.P6M, BUSINESS_ADJUST, StubConvention.SHORT_INITIAL, false);
FixedCouponBond product = FixedCouponBond.builder().securityId(SecurityId.of(BOND_SECURITY_ID[i])).dayCount(DAY_COUNT).fixedRate(UND_RATES[i] * ONE_PERCENT).legalEntityId(ISSUER_ID).currency(JPY).notional(NOTIONAL).accrualSchedule(periodSchedule).settlementDateOffset(SETTLEMENT_DAYS).yieldConvention(YIELD_CONVENTION).build();
UND_BOND[i] = product;
}
UND_BOND_SEP = new FixedCouponBond[NB_UND_BONDS - 2];
Array.Copy(UND_BOND, 2, UND_BOND_SEP, 0, NB_UND_BONDS - 2);
UND_BOND_JUN = new FixedCouponBond[NB_UND_BONDS - 1];
Array.Copy(UND_BOND, 1, UND_BOND_JUN, 0, NB_UND_BONDS - 1);
double[] timeIssuer = new double[] { 0.25136612021857924, 0.4972677595628415, 1.0139980537465378, 2.013998053746538, 2.857833670184894, 3.857833670184894, 4.860655737704918, 5.857833670184894, 7.104409012650647, 7.857833670184894, 8.857923497267759, 9.863313122239688, 14.857833670184894, 19.857833670184895, 29.857833670184895, 39.11262819073284 };
double[] rateIssuer = new double[] { -0.0013117084834668065, -0.0010851901424876163, -0.0020906775838723216, -0.0022137102045172784, -0.0022695678374162888, -0.0023424568490920798, -0.0021603059162879916, -0.0021667343131861225, -0.0018285921969274823, -0.001355094018965514, -6.763044056712535E-4, 1.9555294306801752E-4, 0.003944125562941363, 0.008054233458390252, 0.012276105941434846, 0.013537766297065804 };
double[] timeRepo = new double[] { 0.00273224043715847, 0.01912568306010929, 0.040983606557377046, 0.05737704918032787, 0.07923497267759563, 0.2459016393442623, 0.4972677595628415, 1.0002994236095515 };
double[] rateRepo = new double[] { 2.599662058772748E-4, -8.403529976927196E-4, -0.0010105103936934236, -0.0011506617573950931, -0.0012708071334455143, -0.00146106683851595, -0.0014710815100096722, -0.001481096281798276 };
CurveMetadata metaIssuer = Curves.zeroRates(ISSUER_CURVE_NAME, ACT_ACT_ISDA);
InterpolatedNodalCurve curveIssuer = InterpolatedNodalCurve.of(metaIssuer, DoubleArray.copyOf(timeIssuer), DoubleArray.copyOf(rateIssuer), INTERPOLATOR);
DiscountFactors dscIssuer = ZeroRateDiscountFactors.of(JPY, VALUATION, curveIssuer);
CurveMetadata metaRepo = Curves.zeroRates(REPO_CURVE_NAME, ACT_ACT_ISDA);
InterpolatedNodalCurve curve = InterpolatedNodalCurve.of(metaRepo, DoubleArray.copyOf(timeRepo), DoubleArray.copyOf(rateRepo), INTERPOLATOR);
DiscountFactors dscRepo = ZeroRateDiscountFactors.of(JPY, VALUATION, curve);
LED_PROVIDER = ImmutableLegalEntityDiscountingProvider.builder().issuerCurves(ImmutableMap.of(Pair.of(GROUP_ISSUER, JPY), dscIssuer)).issuerCurveGroups(ImmutableMap.of(ISSUER_ID, GROUP_ISSUER)).repoCurves(ImmutableMap.of(Pair.of(GROUP_REPO, JPY), dscRepo)).repoCurveGroups(ImmutableMap.of(ISSUER_ID, GROUP_REPO)).build();
}
public virtual PointSensitivityBuilder pvbpSensitivity(RatePaymentPeriod paymentPeriod, RatesProvider provider)
{
ArgChecker.isTrue(!paymentPeriod.FxReset.Present, "FX reset is not supported");
int accPeriodCount = paymentPeriod.AccrualPeriods.size();
ArgChecker.isTrue(accPeriodCount == 1 || paymentPeriod.CompoundingMethod.Equals(CompoundingMethod.FLAT), "Only one accrued period or Flat compounding supported");
// no compounding
if (accPeriodCount == 1)
{
RateAccrualPeriod accrualPeriod = paymentPeriod.AccrualPeriods.get(0);
DiscountFactors discountFactors = provider.discountFactors(paymentPeriod.Currency);
return(discountFactors.zeroRatePointSensitivity(paymentPeriod.PaymentDate).multipliedBy(accrualPeriod.YearFraction * paymentPeriod.Notional));
}
else
{
// Flat compounding
switch (paymentPeriod.CompoundingMethod)
{
case FLAT:
return(pvbpSensitivtyCompoundedFlat(paymentPeriod, provider));
default:
throw new System.NotSupportedException("PVBP not implemented yet for non FLAT compounding");
}
}
}
private CurrencyParameterSensitivities sensitivityCreidtCurve <T>(ImmutableCreditRatesProvider provider, System.Func <ImmutableCreditRatesProvider, CurrencyAmount> valueFn, MetaProperty <ImmutableMap <T, LegalEntitySurvivalProbabilities> > metaProperty, CurrencyAmount valueInit)
{
ImmutableMap <T, LegalEntitySurvivalProbabilities> baseCurves = metaProperty.get(provider);
CurrencyParameterSensitivities result = CurrencyParameterSensitivities.empty();
foreach (T key in baseCurves.Keys)
{
LegalEntitySurvivalProbabilities credit = baseCurves.get(key);
CreditDiscountFactors creditDiscountFactors = credit.SurvivalProbabilities;
DiscountFactors discountFactors = creditDiscountFactors.toDiscountFactors();
Curve curve = checkDiscountFactors(discountFactors);
int paramCount = curve.ParameterCount;
double[] sensitivity = new double[paramCount];
for (int i = 0; i < paramCount; i++)
{
Curve dscBumped = curve.withParameter(i, curve.getParameter(i) + shift);
IDictionary <T, LegalEntitySurvivalProbabilities> mapBumped = new Dictionary <T, LegalEntitySurvivalProbabilities>(baseCurves);
mapBumped[key] = LegalEntitySurvivalProbabilities.of(credit.LegalEntityId, createCreditDiscountFactors(creditDiscountFactors, dscBumped));
ImmutableCreditRatesProvider providerDscBumped = provider.toBuilder().set(metaProperty, mapBumped).build();
sensitivity[i] = (valueFn(providerDscBumped).Amount - valueInit.Amount) / shift;
}
result = result.combinedWith(curve.createParameterSensitivity(valueInit.Currency, DoubleArray.copyOf(sensitivity)));
}
return(result);
}
//-------------------------------------------------------------------------
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ImmutableConstructor private DiscountFxForwardRates(com.opengamma.strata.basics.currency.CurrencyPair currencyPair, com.opengamma.strata.basics.currency.FxRateProvider fxRateProvider, com.opengamma.strata.pricer.DiscountFactors baseCurrencyDiscountFactors, com.opengamma.strata.pricer.DiscountFactors counterCurrencyDiscountFactors)
private DiscountFxForwardRates(CurrencyPair currencyPair, FxRateProvider fxRateProvider, DiscountFactors baseCurrencyDiscountFactors, DiscountFactors counterCurrencyDiscountFactors)
{
JodaBeanUtils.notNull(currencyPair, "currencyPair");
JodaBeanUtils.notNull(fxRateProvider, "fxRateProvider");
JodaBeanUtils.notNull(baseCurrencyDiscountFactors, "baseCurrencyDiscountFactors");
JodaBeanUtils.notNull(counterCurrencyDiscountFactors, "counterCurrencyDiscountFactors");
if (!baseCurrencyDiscountFactors.Currency.Equals(currencyPair.Base))
{
throw new System.ArgumentException(Messages.format("Index base currency {} did not match discount factor base currency {}", currencyPair.Base, baseCurrencyDiscountFactors.Currency));
}
if (!counterCurrencyDiscountFactors.Currency.Equals(currencyPair.Counter))
{
throw new System.ArgumentException(Messages.format("Index counter currency {} did not match discount factor counter currency {}", currencyPair.Counter, counterCurrencyDiscountFactors.Currency));
}
if (!baseCurrencyDiscountFactors.ValuationDate.Equals(counterCurrencyDiscountFactors.ValuationDate))
{
throw new System.ArgumentException("Curves must have the same valuation date");
}
this.currencyPair = currencyPair;
this.fxRateProvider = fxRateProvider;
this.baseCurrencyDiscountFactors = baseCurrencyDiscountFactors;
this.counterCurrencyDiscountFactors = counterCurrencyDiscountFactors;
this.valuationDate = baseCurrencyDiscountFactors.ValuationDate;
this.paramCombiner = ParameterizedDataCombiner.of(baseCurrencyDiscountFactors, counterCurrencyDiscountFactors);
}
public override Builder set(string propertyName, object newValue)
{
switch (propertyName.GetHashCode())
{
case 1005147787: // currencyPair
this.currencyPair = (CurrencyPair)newValue;
break;
case -1499624221: // fxRateProvider
this.fxRateProvider = (FxRateProvider)newValue;
break;
case 1151357473: // baseCurrencyDiscountFactors
this.baseCurrencyDiscountFactors = (DiscountFactors)newValue;
break;
case -453959018: // counterCurrencyDiscountFactors
this.counterCurrencyDiscountFactors = (DiscountFactors)newValue;
break;
default:
throw new NoSuchElementException("Unknown property: " + propertyName);
}
return(this);
}
public ImmutableLegalEntityDiscountingProvider toImmutableLegalEntityDiscountingProvider()
{
// repo curves
IDictionary <Pair <RepoGroup, Currency>, DiscountFactors> repoCurves = new Dictionary <Pair <RepoGroup, Currency>, DiscountFactors>();
foreach (Pair <RepoGroup, Currency> pair in lookup.RepoCurves.Keys)
{
CurveId curveId = lookup.RepoCurves.get(pair);
if (marketData.containsValue(curveId))
{
Curve curve = marketData.getValue(curveId);
repoCurves[pair] = DiscountFactors.of(pair.Second, ValuationDate, curve);
}
}
// issuer curves
IDictionary <Pair <LegalEntityGroup, Currency>, DiscountFactors> issuerCurves = new Dictionary <Pair <LegalEntityGroup, Currency>, DiscountFactors>();
foreach (Pair <LegalEntityGroup, Currency> pair in lookup.IssuerCurves.Keys)
{
CurveId curveId = lookup.IssuerCurves.get(pair);
if (marketData.containsValue(curveId))
{
Curve curve = marketData.getValue(curveId);
issuerCurves[pair] = DiscountFactors.of(pair.Second, ValuationDate, curve);
}
}
// build result
return(ImmutableLegalEntityDiscountingProvider.builder().valuationDate(ValuationDate).repoCurveSecurityGroups(lookup.RepoCurveSecurityGroups).repoCurveGroups(lookup.RepoCurveGroups).repoCurves(repoCurves).issuerCurveGroups(lookup.IssuerCurveGroups).issuerCurves(issuerCurves).build());
}
private IssuerCurveDiscountFactors(DiscountFactors discountFactors, LegalEntityGroup legalEntityGroup)
{
JodaBeanUtils.notNull(discountFactors, "discountFactors");
JodaBeanUtils.notNull(legalEntityGroup, "legalEntityGroup");
this.discountFactors = discountFactors;
this.legalEntityGroup = legalEntityGroup;
}
/// <summary>
/// Obtains legal entity discounting rates provider from valuation date.
/// </summary>
/// <param name="valuationDate"> the valuation date </param>
/// <returns> the discounting rates provider </returns>
public static LegalEntityDiscountingProvider getLegalEntityDiscountingProviderJp(LocalDate valuationDate)
{
DiscountFactors dscIssuer = ZeroRateDiscountFactors.of(JPY, valuationDate, ISSUER_CURVE);
DiscountFactors dscRepo = ZeroRateDiscountFactors.of(JPY, valuationDate, REPO_CURVE);
return(ImmutableLegalEntityDiscountingProvider.builder().issuerCurves(ImmutableMap.of(Pair.of(GROUP_ISSUER, JPY), dscIssuer)).issuerCurveGroups(ImmutableMap.of(ISSUER_ID, GROUP_ISSUER)).repoCurves(ImmutableMap.of(Pair.of(GROUP_REPO, JPY), dscRepo)).repoCurveGroups(ImmutableMap.of(ISSUER_ID, GROUP_REPO)).build());
}
/// <summary>
/// Calibrate trinomial tree to Black volatilities.
/// <para>
/// {@code timeToExpiry} determines the coverage of the resulting trinomial tree.
/// Thus this should match the time to expiry of the target instrument to price using the calibrated tree.
///
/// </para>
/// </summary>
/// <param name="timeToExpiry"> the time to expiry </param>
/// <param name="currencyPair"> the currency pair </param>
/// <param name="ratesProvider"> the rates provider </param>
/// <param name="volatilities"> the Black volatility provider </param>
/// <returns> the trinomial tree data </returns>
public virtual RecombiningTrinomialTreeData calibrateTrinomialTree(double timeToExpiry, CurrencyPair currencyPair, RatesProvider ratesProvider, BlackFxOptionVolatilities volatilities)
{
validate(ratesProvider, volatilities);
if (timeToExpiry <= 0d)
{
throw new System.ArgumentException("option expired");
}
Currency ccyBase = currencyPair.Base;
Currency ccyCounter = currencyPair.Counter;
double todayFx = ratesProvider.fxRate(currencyPair);
DiscountFactors baseDiscountFactors = ratesProvider.discountFactors(ccyBase);
DiscountFactors counterDiscountFactors = ratesProvider.discountFactors(ccyCounter);
System.Func <double, double> interestRate = (double?t) =>
{
return(counterDiscountFactors.zeroRate(t.Value));
};
System.Func <double, double> dividendRate = (double?t) =>
{
return(baseDiscountFactors.zeroRate(t.Value));
};
System.Func <DoublesPair, double> impliedVolSurface = (DoublesPair tk) =>
{
double dfBase = baseDiscountFactors.discountFactor(tk.First);
double dfCounter = counterDiscountFactors.discountFactor(tk.First);
double forward = todayFx * dfBase / dfCounter;
return(volatilities.volatility(currencyPair, tk.First, tk.Second, forward));
};
ImpliedTrinomialTreeLocalVolatilityCalculator localVol = new ImpliedTrinomialTreeLocalVolatilityCalculator(nSteps, timeToExpiry);
return(localVol.calibrateImpliedVolatility(impliedVolSurface, todayFx, interestRate, dividendRate));
}
/// <summary>
/// Test present value sensitivity for AFMA FRA discounting method.
/// </summary>
public virtual void test_presentValueSensitivity_AFMA()
{
RateComputationFn<RateComputation> mockObs = mock(typeof(RateComputationFn));
DiscountFactors mockDf = mock(typeof(DiscountFactors));
SimpleRatesProvider simpleProv = new SimpleRatesProvider(VAL_DATE, mockDf);
ResolvedFra fraExp = RFRA_AFMA;
double forwardRate = 0.05;
double discountRate = 0.025;
double paymentTime = 0.3;
double discountFactor = Math.Exp(-discountRate * paymentTime);
LocalDate fixingDate = FRA_AFMA.StartDate;
IborIndexObservation obs = IborIndexObservation.of(FRA.Index, fixingDate, REF_DATA);
PointSensitivityBuilder sens = IborRateSensitivity.of(obs, 1d);
when(mockDf.discountFactor(fraExp.PaymentDate)).thenReturn(discountFactor);
when(mockDf.zeroRatePointSensitivity(fraExp.PaymentDate)).thenReturn(ZeroRateSensitivity.of(fraExp.Currency, paymentTime, -discountFactor * paymentTime));
when(mockObs.rateSensitivity(fraExp.FloatingRate, fraExp.StartDate, fraExp.EndDate, simpleProv)).thenReturn(sens);
when(mockObs.rate(fraExp.FloatingRate, FRA_AFMA.StartDate, FRA_AFMA.EndDate, simpleProv)).thenReturn(forwardRate);
DiscountingFraProductPricer test = new DiscountingFraProductPricer(mockObs);
PointSensitivities sensitivity = test.presentValueSensitivity(fraExp, simpleProv);
double eps = 1.e-7;
double fdDscSense = dscSensitivity(RFRA_AFMA, forwardRate, discountFactor, paymentTime, eps);
double fdSense = presentValueFwdSensitivity(RFRA_AFMA, forwardRate, discountFactor, eps);
ImmutableList<PointSensitivity> sensitivities = sensitivity.Sensitivities;
assertEquals(sensitivities.size(), 2);
IborRateSensitivity sensitivity0 = (IborRateSensitivity) sensitivities.get(0);
assertEquals(sensitivity0.Index, FRA_AFMA.Index);
assertEquals(sensitivity0.Observation.FixingDate, fixingDate);
assertEquals(sensitivity0.Sensitivity, fdSense, FRA_AFMA.Notional * eps);
ZeroRateSensitivity sensitivity1 = (ZeroRateSensitivity) sensitivities.get(1);
assertEquals(sensitivity1.Currency, FRA_AFMA.Currency);
assertEquals(sensitivity1.YearFraction, paymentTime);
assertEquals(sensitivity1.Sensitivity, fdDscSense, FRA_AFMA.Notional * eps);
}
//-------------------------------------------------------------------------
private ValueDerivatives priceDerivatives(ResolvedFxSingleBarrierOption option, RatesProvider ratesProvider, BlackFxOptionVolatilities volatilities, RecombiningTrinomialTreeData data)
{
validate(option, ratesProvider, volatilities);
validateData(option, ratesProvider, volatilities, data);
int nSteps = data.NumberOfSteps;
ResolvedFxVanillaOption underlyingOption = option.UnderlyingOption;
double timeToExpiry = data.getTime(nSteps);
ResolvedFxSingle underlyingFx = underlyingOption.Underlying;
Currency ccyBase = underlyingFx.CounterCurrencyPayment.Currency;
Currency ccyCounter = underlyingFx.CounterCurrencyPayment.Currency;
DiscountFactors baseDiscountFactors = ratesProvider.discountFactors(ccyBase);
DiscountFactors counterDiscountFactors = ratesProvider.discountFactors(ccyCounter);
double rebateAtExpiry = 0d; // used to price knock-in option
double rebateAtExpiryDerivative = 0d; // used to price knock-in option
double notional = Math.Abs(underlyingFx.BaseCurrencyPayment.Amount);
double[] rebateArray = new double[nSteps + 1];
SimpleConstantContinuousBarrier barrier = (SimpleConstantContinuousBarrier)option.Barrier;
if (option.Rebate.Present)
{
CurrencyAmount rebateCurrencyAmount = option.Rebate.get();
double rebatePerUnit = rebateCurrencyAmount.Amount / notional;
bool isCounter = rebateCurrencyAmount.Currency.Equals(ccyCounter);
double rebate = isCounter ? rebatePerUnit : rebatePerUnit * barrier.BarrierLevel;
if (barrier.KnockType.KnockIn)
{ // use in-out parity
double dfCounterAtExpiry = counterDiscountFactors.discountFactor(timeToExpiry);
double dfBaseAtExpiry = baseDiscountFactors.discountFactor(timeToExpiry);
for (int i = 0; i < nSteps + 1; ++i)
{
rebateArray[i] = isCounter ? rebate * dfCounterAtExpiry / counterDiscountFactors.discountFactor(data.getTime(i)) : rebate * dfBaseAtExpiry / baseDiscountFactors.discountFactor(data.getTime(i));
}
if (isCounter)
{
rebateAtExpiry = rebatePerUnit * dfCounterAtExpiry;
}
else
{
rebateAtExpiry = rebatePerUnit * data.Spot * dfBaseAtExpiry;
rebateAtExpiryDerivative = rebatePerUnit * dfBaseAtExpiry;
}
}
else
{
Arrays.fill(rebateArray, rebate);
}
}
ConstantContinuousSingleBarrierKnockoutFunction barrierFunction = ConstantContinuousSingleBarrierKnockoutFunction.of(underlyingOption.Strike, timeToExpiry, underlyingOption.PutCall, nSteps, barrier.BarrierType, barrier.BarrierLevel, DoubleArray.ofUnsafe(rebateArray));
ValueDerivatives barrierPrice = TREE.optionPriceAdjoint(barrierFunction, data);
if (barrier.KnockType.KnockIn)
{ // use in-out parity
EuropeanVanillaOptionFunction vanillaFunction = EuropeanVanillaOptionFunction.of(underlyingOption.Strike, timeToExpiry, underlyingOption.PutCall, nSteps);
ValueDerivatives vanillaPrice = TREE.optionPriceAdjoint(vanillaFunction, data);
return(ValueDerivatives.of(vanillaPrice.Value + rebateAtExpiry - barrierPrice.Value, DoubleArray.of(vanillaPrice.getDerivative(0) + rebateAtExpiryDerivative - barrierPrice.getDerivative(0))));
}
return(barrierPrice);
}
//-------------------------------------------------------------------------
public virtual void test_of_discountFactors()
{
DiscountFactors test = DiscountFactors.of(GBP, DATE_VAL, CURVE_DF);
assertEquals(test is SimpleDiscountFactors, true);
assertEquals(test.Currency, GBP);
assertEquals(test.ValuationDate, DATE_VAL);
}
public virtual void test_of_zeroRatePeriodic()
{
DiscountFactors test = DiscountFactors.of(GBP, DATE_VAL, CURVE_ZERO_PERIODIC);
assertEquals(test is ZeroRatePeriodicDiscountFactors, true);
assertEquals(test.Currency, GBP);
assertEquals(test.ValuationDate, DATE_VAL);
}
/// <summary>
/// Computes the present value of the payment by discounting.
/// <para>
/// The present value is zero if the payment date is before the valuation date.
/// </para>
/// <para>
/// The specified discount factors should be for the payment currency, however this is not validated.
///
/// </para>
/// </summary>
/// <param name="payment"> the payment </param>
/// <param name="discountFactors"> the discount factors to price against </param>
/// <returns> the present value </returns>
public virtual CurrencyAmount presentValue(Payment payment, DiscountFactors discountFactors)
{
if (discountFactors.ValuationDate.isAfter(payment.Date))
{
return(CurrencyAmount.zero(payment.Currency));
}
return(payment.Value.multipliedBy(discountFactors.discountFactor(payment.Date)));
}
private DiscountIborIndexRates(IborIndex index, DiscountFactors discountFactors, LocalDateDoubleTimeSeries fixings)
{
JodaBeanUtils.notNull(index, "index");
JodaBeanUtils.notNull(discountFactors, "discountFactors");
JodaBeanUtils.notNull(fixings, "fixings");
this.index = index;
this.discountFactors = discountFactors;
this.fixings = fixings;
}
public virtual void test_discountFactorTimeDerivative()
{
DiscountFactors test = DiscountFactors.of(GBP, DATE_VAL, CURVE);
double relativeYearFraction = ACT_365F.relativeYearFraction(DATE_VAL, DATE_AFTER);
double expectedP = test.discountFactor(relativeYearFraction + EPS);
double expectedM = test.discountFactor(relativeYearFraction - EPS);
assertEquals(test.discountFactorTimeDerivative(relativeYearFraction), (expectedP - expectedM) / (2 * EPS), TOL_FD);
}
//-------------------------------------------------------------------------
// creates a simple provider
private SimpleRatesProvider createProvider(ResolvedFra fraExp)
{
DiscountFactors mockDf = SimpleDiscountFactors.of(GBP, VAL_DATE, ConstantCurve.of(Curves.discountFactors("DSC", DAY_COUNT), DISCOUNT_FACTOR));
LocalDateDoubleTimeSeries timeSeries = LocalDateDoubleTimeSeries.of(VAL_DATE, FORWARD_RATE);
IborIndexRates mockIbor = SimpleIborIndexRates.of(GBP_LIBOR_3M, VAL_DATE, ConstantCurve.of(Curves.forwardRates("L3M", DAY_COUNT), FORWARD_RATE), timeSeries);
SimpleRatesProvider prov = new SimpleRatesProvider(VAL_DATE, mockDf);
prov.IborRates = mockIbor;
return prov;
}
// lookup the discount factors for the repo group
private RepoCurveDiscountFactors repoCurveDiscountFactors(RepoGroup repoGroup, Currency currency)
{
DiscountFactors discountFactors = repoCurves.get(Pair.of(repoGroup, currency));
if (discountFactors == null)
{
throw new System.ArgumentException("Unable to find repo curve: " + repoGroup + ", " + currency);
}
return(RepoCurveDiscountFactors.of(discountFactors, repoGroup));
}
//-------------------------------------------------------------------------
/// <summary>
/// Calculates the deposit fair rate given the start and end time and the accrual factor.
/// <para>
/// When the deposit has already started the number may not be meaningful as the remaining period
/// is not in line with the accrual factor.
///
/// </para>
/// </summary>
/// <param name="deposit"> the product </param>
/// <param name="provider"> the rates provider </param>
/// <returns> the par rate </returns>
public virtual double parRate(ResolvedTermDeposit deposit, RatesProvider provider)
{
Currency currency = deposit.Currency;
DiscountFactors discountFactors = provider.discountFactors(currency);
double dfStart = discountFactors.discountFactor(deposit.StartDate);
double dfEnd = discountFactors.discountFactor(deposit.EndDate);
double accrualFactor = deposit.YearFraction;
return((dfStart / dfEnd - 1d) / accrualFactor);
}
/// <summary>
/// Computes the present value of the payment with z-spread by discounting.
/// <para>
/// The present value is zero if the payment date is before the valuation date.
/// </para>
/// <para>
/// The specified discount factors should be for the payment currency, however this is not validated.
/// </para>
/// <para>
/// The z-spread is a parallel shift applied to continuously compounded rates or periodic
/// compounded rates of the discounting curve.
///
/// </para>
/// </summary>
/// <param name="payment"> the payment </param>
/// <param name="discountFactors"> the discount factors to price against </param>
/// <param name="zSpread"> the z-spread </param>
/// <param name="compoundedRateType"> the compounded rate type </param>
/// <param name="periodsPerYear"> the number of periods per year </param>
/// <returns> the present value </returns>
public virtual CurrencyAmount presentValueWithSpread(Payment payment, DiscountFactors discountFactors, double zSpread, CompoundedRateType compoundedRateType, int periodsPerYear)
{
if (discountFactors.ValuationDate.isAfter(payment.Date))
{
return(CurrencyAmount.zero(payment.Currency));
}
double df = discountFactors.discountFactorWithSpread(payment.Date, zSpread, compoundedRateType, periodsPerYear);
return(payment.Value.multipliedBy(df));
}
private SimpleRatesProvider provider(LocalDate valuationDate, double dfStart, double dfEnd)
{
DiscountFactors mockDf = mock(typeof(DiscountFactors));
when(mockDf.discountFactor(START_DATE)).thenReturn(dfStart);
when(mockDf.discountFactor(END_DATE)).thenReturn(dfEnd);
SimpleRatesProvider prov = new SimpleRatesProvider(valuationDate, mockDf);
return(prov);
}
// lookup the discount factors for the legal entity group
private IssuerCurveDiscountFactors issuerCurveDiscountFactors(LegalEntityGroup legalEntityGroup, Currency currency)
{
DiscountFactors discountFactors = issuerCurves.get(Pair.of(legalEntityGroup, currency));
if (discountFactors == null)
{
throw new System.ArgumentException("Unable to find issuer curve: " + legalEntityGroup + ", " + currency);
}
return(IssuerCurveDiscountFactors.of(discountFactors, legalEntityGroup));
}
private ImmutableLegalEntityDiscountingProvider replaceRepoCurve(ImmutableLegalEntityDiscountingProvider ratesProvider, Pair <RepoGroup, Currency> rgCcy, DiscountFactors discountFactors)
{
IDictionary <Pair <RepoGroup, Currency>, DiscountFactors> curves = new Dictionary <Pair <RepoGroup, Currency>, DiscountFactors>();
//JAVA TO C# CONVERTER TODO TASK: There is no .NET Dictionary equivalent to the Java 'putAll' method:
curves.putAll(ratesProvider.RepoCurves);
curves[rgCcy] = discountFactors;
return(ratesProvider.toBuilder().repoCurves(curves).build());
}
//-------------------------------------------------------------------------
// creates a simple provider
private SimpleRatesProvider createProvider(LocalDate valDate)
{
Curve curve = ConstantCurve.of(Curves.discountFactors("Test", DAY_COUNT), DISCOUNT_FACTOR);
DiscountFactors df = SimpleDiscountFactors.of(GBP, valDate, curve);
SimpleRatesProvider prov = new SimpleRatesProvider(valDate);
prov.DayCount = DAY_COUNT;
prov.DiscountFactors = df;
return(prov);
}
//-------------------------------------------------------------------------
public DiscountFactors discountFactors(Currency currency)
{
Curve curve = discountCurves.get(currency);
if (curve == null)
{
throw new System.ArgumentException("Unable to find discount curve: " + currency);
}
return(DiscountFactors.of(currency, valuationDate, curve));
}
/// <summary>
/// Calculates the present value sensitivity of the Ibor fixing product.
/// <para>
/// The present value sensitivity of the product is the sensitivity of the present value to
/// the underlying curves.
///
/// </para>
/// </summary>
/// <param name="deposit"> the product </param>
/// <param name="provider"> the rates provider </param>
/// <returns> the point sensitivity of the present value </returns>
public virtual PointSensitivities presentValueSensitivity(ResolvedIborFixingDeposit deposit, RatesProvider provider)
{
double forwardRate = this.forwardRate(deposit, provider);
DiscountFactors discountFactors = provider.discountFactors(deposit.Currency);
double discountFactor = discountFactors.discountFactor(deposit.EndDate);
// sensitivity
PointSensitivityBuilder sensiFwd = forwardRateSensitivity(deposit, provider).multipliedBy(-discountFactor * deposit.Notional * deposit.YearFraction);
PointSensitivityBuilder sensiDsc = discountFactors.zeroRatePointSensitivity(deposit.EndDate).multipliedBy(deposit.Notional * deposit.YearFraction * (deposit.FixedRate - forwardRate));
return(sensiFwd.combinedWith(sensiDsc).build());
}
public virtual PointSensitivityBuilder presentValueSensitivity(FxResetNotionalExchange @event, RatesProvider provider)
{
DiscountFactors discountFactors = provider.discountFactors(@event.Currency);
PointSensitivityBuilder sensiDsc = discountFactors.zeroRatePointSensitivity(@event.PaymentDate);
sensiDsc = sensiDsc.multipliedBy(forecastValue(@event, provider));
PointSensitivityBuilder sensiFx = forecastValueSensitivity(@event, provider);
sensiFx = sensiFx.multipliedBy(discountFactors.discountFactor(@event.PaymentDate));
return(sensiDsc.combinedWith(sensiFx));
}
