public static Lease Create(string id, string propertyReference, DateTime nextReviewDate, DateTime baseDate, Period tenor, string currency,
Period paymentFrequency, string businessDayConvention, string businessCentersAsString)
{
var lease = new Lease
{
startDate = new IdentifiedDate {
id = "StartDate", Value = baseDate
},
leaseExpiryDate = new IdentifiedDate {
id = "MaturityDate", Value = tenor.Add(baseDate)
},
leaseTenor = tenor,
businessDayAdjustments = BusinessDayAdjustmentsHelper.Create(businessDayConvention, businessCentersAsString),
currency = new IdentifiedCurrency {
id = "PaymentCurrency", Value = currency
},
leaseType = "Standard",
leaseIdentifier = id,
propertyReference = propertyReference,
nextReviewDate = new IdentifiedDate {
id = "NextReviewDate", Value = nextReviewDate
},
paymentFrequency = paymentFrequency,
};
return(lease);
}
public static DateTime Add(DateTime dateTime, Period periodToAdd)
{
if (periodToAdd == null)
{
throw new ArgumentNullException(nameof(periodToAdd));
}
return(periodToAdd.Add(dateTime));
}
public void Addition_With_IdenticalPeriodTypes()
{
Period p1 = Period.FromHours(3);
Period p2 = Period.FromHours(2);
Period sum = p1 + p2;
Assert.AreEqual(5, sum.Hours);
Assert.AreEqual(sum, Period.Add(p1, p2));
}
/// <summary>
/// Gets the unadjusted calculation date schedule.
/// </summary>
/// <param name="effectiveDate">The effective date.</param>
/// <param name="intervalToTerminationDate">The interval to termination date.</param>
/// <param name="periodInterval">The period interval.</param>
/// <returns></returns>
public List <CalculationPeriod> GetUnadjustedCalculationDateSchedule(DateTime effectiveDate, Period intervalToTerminationDate, Period periodInterval)
{
CalculationPeriodDates = null;
PeriodInterval = periodInterval;
_effectiveDate = effectiveDate;
_termDate = intervalToTerminationDate.Add(effectiveDate);
RollConvention = RollConventionEnum.NONE;
_unadjustedDateScheduleList = CalculationPeriodHelper.GenerateUnadjustedCalculationDates(effectiveDate, intervalToTerminationDate, periodInterval);
return(_unadjustedDateScheduleList);
}
/// <summary>
/// Process a PPD Grid. The result is a Market structure that camn be published.
/// </summary>
/// <param name="logger">The logger</param>
/// <param name="cache">The cache.</param>
/// <param name="swapCurve">The latest rate curve</param>
/// <param name="ppdGrid">The raw Points Per Day matrix supplied from the subscriber</param>
/// <param name="id">The id to use in publishing the curve</param>
/// <param name="nameSpace">The client namespace</param>
/// <returns></returns>
public static Market ProcessSwaption(ILogger logger, ICoreCache cache, Market swapCurve, SwaptionPPDGrid ppdGrid, string id, string nameSpace)
{
var mkt = swapCurve;
var curve = new SimpleRateCurve(mkt);
// List the values so we can build our ATM vols
var atmVols = new Dictionary <SimpleKey, decimal>();
// Create a calendar to use to modify the date
// default to be Sydney...
IBusinessCalendar bc = BusinessCenterHelper.ToBusinessCalendar(cache, new[] { "AUSY" }, nameSpace); //BusinessCalendarHelper("AUSY");
// Use some logic to get the spot date to use
// LPM Spot lag is 2 days (modfollowing)
DateTime spotDate = curve.GetSpotDate();
// Extract each surface and build an ATM engine therefrom
// Build a list of all possible engines
foreach (string e in ExpiryKeys)
{
// Assume frequency = 4 months until 3 years tenor is reached
Period expiration = PeriodHelper.Parse(e);
double expiryYearFraction = expiration.ToYearFraction();
foreach (string t in TenorKeys)
{
// Create a Swaprate for each expiry/tenor pair
// Assume frequency = 4 months until 3 years tenor is reached
double tenorYearFraction = PeriodHelper.Parse(t).ToYearFraction();
int frequency = tenorYearFraction < 4 ? 4 : 2;
// Calculation date
// Discount factors
// Offsets (elapsed days)
var rates = new SwapRate(logger, cache, nameSpace, "AUSY", curve.BaseDate, "ACT/365.FIXED", curve.GetDiscountFactors(), curve.GetDiscountFactorOffsets(), frequency, BusinessDayConventionEnum.MODFOLLOWING);
// Calculate the volatility given PPD and swap curve
DateTime expiry = bc.Roll(expiration.Add(spotDate), BusinessDayConventionEnum.FOLLOWING);
decimal vol = CalculateAtmVolatility(rates, expiry, ppdGrid, expiryYearFraction, tenorYearFraction);
atmVols.Add(new SimpleKey(e, t), vol);
}
}
var vols = new object[atmVols.Count + 1, 3];
var i = 1;
vols[0, 0] = "Expiry";
vols[0, 1] = "Tenor";
vols[0, 2] = "0";
foreach (var key in atmVols.Keys)
{
vols[i, 0] = key.Expiry;
vols[i, 1] = key.Tenor;
vols[i, 2] = atmVols[key];
i++;
}
DateTime buildDateTime = swapCurve.Items1[0].buildDateTime;
var volSurface = new VolatilitySurface(vols, new VolatilitySurfaceIdentifier(id), curve.BaseDate, buildDateTime);
return(CreateMarketDocument(volSurface.GetFpMLData()));
}
/// <summary>
/// Gets the first regular period start date.
/// </summary>
/// <param name="periodInterval">The period interval.</param>
/// <param name="rollConvention">The roll convention.</param>
/// <param name="startDate">The start date.</param>
/// <returns></returns>
public static DateTime GetFirstRegularPeriodStartDate(Period periodInterval, RollConventionEnum rollConvention, DateTime startDate)
{
DateTime advDate = periodInterval.Add(startDate);
DateTime regularPeriodStartDate = advDate;
if (rollConvention != RollConventionEnum.NONE)
{
regularPeriodStartDate = RollConventionEnumHelper.AdjustDate(rollConvention, advDate);
}
return(regularPeriodStartDate);
}
/// <summary>
/// Gets the unadjusted dates from effective date.
/// </summary>
/// <param name="effectiveDate">The effective date.</param>
/// <param name="terminationDate">The termination date.</param>
/// <param name="periodInterval">The period interval.</param>
/// <param name="rollConvention">The roll convention.</param>
/// <param name="firstRegularPeriodStartDate">The first regular period start date.</param>
/// <param name="lastRegularPeriodEndDate">The last regular period end date.</param>
/// <returns></returns>
public static DateTime[] GetUnadjustedDatesFromEffectiveDate(DateTime effectiveDate, DateTime terminationDate, Period periodInterval, RollConventionEnum rollConvention, out DateTime firstRegularPeriodStartDate, out DateTime lastRegularPeriodEndDate)
{
lastRegularPeriodEndDate = terminationDate;
DateTime firstRollDate = effectiveDate;
var periodDates = new List <DateTime> {
firstRollDate
};
DateTime nextRollDate = periodInterval.Add(firstRollDate);
DateTime rollConventionDate = ApplyRollConventionToDate(rollConvention, nextRollDate);
firstRegularPeriodStartDate = DateTime.Compare(nextRollDate, rollConventionDate) == 0 ? firstRollDate : rollConventionDate;
periodDates.Add(rollConventionDate);
Boolean reachedEnd = false;
while (!reachedEnd)
{
rollConventionDate = periodInterval.Add(rollConventionDate);
rollConventionDate = ApplyRollConventionToDate(rollConvention, rollConventionDate);
if (rollConventionDate <= terminationDate)
{
if (rollConventionDate.Month == terminationDate.Month && rollConventionDate.Year == terminationDate.Year)
{
periodDates.Add(terminationDate);
reachedEnd = true;
lastRegularPeriodEndDate = rollConventionDate.Day == terminationDate.Day ? periodDates[periodDates.Count - 1] : periodDates[periodDates.Count - 2];
}
else
{
periodDates.Add(rollConventionDate);
}
}
else
{
reachedEnd = true;
lastRegularPeriodEndDate = periodDates[periodDates.Count - 1];
periodDates.Add(terminationDate);
}
}
periodDates.Sort();
return(periodDates.ToArray());
}
/// <summary>
/// Initializes a new instance of the <see cref="PriceableZeroRate"/> class.
/// </summary>
/// <param name="id">The id.</param>
/// <param name="baseDate">The base date.</param>
/// <param name="amount">The amount of cash.</param>
/// <param name="term">The term.</param>
/// <param name="nodeStruct">The nodeStruct.</param>
/// <param name="paymentCalendar">The payment calendar. If null, a new is constructed based on the business calendars.</param>
/// <param name="fixedRate">The fixed rate.</param>
public PriceableZeroRate(string id, DateTime baseDate, Decimal amount, Period term, ZeroRateNodeStruct nodeStruct,
IBusinessCalendar paymentCalendar, BasicQuotation fixedRate)
: base(id, baseDate, amount, nodeStruct.BusinessDayAdjustments, fixedRate)
{
ModelIdentifier = "ZeroCouponRate";
Adjust = nodeStruct.AdjustDates;
DayCountFraction = nodeStruct.DayCountFraction;
RiskMaturityDate = !Adjust?term.Add(baseDate) : GetEffectiveDate(baseDate, paymentCalendar, term, nodeStruct.BusinessDayAdjustments.businessDayConvention);
CompoundingFrequency = nodeStruct.CompoundingFrequency;
AdjustedStartDate = baseDate;
YearFraction = GetYearFraction(DayCountFraction.Value, AdjustedStartDate, RiskMaturityDate);
}
/// <summary>
/// Gets the last regular period end date.
/// </summary>
/// <param name="periodInterval">The period interval.</param>
/// <param name="rollConvention">The roll convention.</param>
/// <param name="endDate">The end date.</param>
/// <returns></returns>
public static DateTime GetLastRegularPeriodEndDate(Period periodInterval, RollConventionEnum rollConvention, DateTime endDate)
{
int periodMultiplierAsInt = int.Parse(periodInterval.periodMultiplier);
if (periodMultiplierAsInt > 0)
{
periodMultiplierAsInt = periodMultiplierAsInt * -1;
}
periodInterval.periodMultiplier = periodMultiplierAsInt.ToString(CultureInfo.InvariantCulture);
DateTime advDate = periodInterval.Add(endDate);
DateTime regularPeriodEndDate = advDate;
if (rollConvention != RollConventionEnum.NONE)
{
regularPeriodEndDate = RollConventionEnumHelper.AdjustDate(rollConvention, advDate);
}
return(regularPeriodEndDate);
}
public void AddEnclosedPeriodShouldReturnSamePeriod()
{
// Arrange
var from = new DateTime(1111);
var to = new DateTime(3333);
var period = new Period(from, to);
ICollection expected = new Period[] { period };
// Act
IEnumerable <Period> actual1 = period + period;
IEnumerable <Period> actual2 = period.Add(period);
// Assert
CollectionAssert.AreEqual(expected, (ICollection)actual1.ToList());
CollectionAssert.AreEqual(expected, (ICollection)actual2.ToList());
}
/// <summary>
/// Generates the unadjusted calculation dates.
/// </summary>
/// <param name="effectiveDate">The effective date.</param>
/// <param name="intervalToTerminationDate">The interval to termination date.</param>
/// <param name="periodInterval">The period interval.</param>
/// <param name="rollConvention">The roll convention.</param>
/// <returns></returns>
public static List <CalculationPeriod> GenerateUnadjustedCalculationDates(DateTime effectiveDate, Period intervalToTerminationDate, Period periodInterval, RollConventionEnum rollConvention)
{
DateTime startDate = effectiveDate;
// Adjust the effective date
if (rollConvention != RollConventionEnum.NONE)
{
startDate = RollConventionEnumHelper.AdjustDate(rollConvention, effectiveDate);
}
Double divisor = IntervalHelper.Div(intervalToTerminationDate, periodInterval);
// The divisor has to be a whole number (i.e. the period must roll to the term date interval
if ((divisor % 1) != 0)
{
throw new ArithmeticException("The period frequency will not roll to the supplied termination date interval");
}
DateTime terminationDate = intervalToTerminationDate.Add(startDate);
StubPeriodTypeEnum?stubPeriodType = null;
return(GenerateUnadjustedCalculationDates(startDate, terminationDate, effectiveDate, periodInterval, rollConvention, stubPeriodType));
}
/// <summary>
/// Gets the unadjusted date schedule.
/// </summary>
/// <param name="effectiveDate">The effective date.</param>
/// <param name="intervalToTerminationDate">The interval to termination date.</param>
/// <param name="periodInterval">The period interval.</param>
/// <returns></returns>
public static List <DateTime> GetUnadjustedDateSchedule(DateTime effectiveDate,
Period intervalToTerminationDate, Period periodInterval)
{
Double divisor = IntervalHelper.Div(intervalToTerminationDate, periodInterval);
// The divisor has to be a whole number (i.e. the period must roll to the term date interval
if (System.Math.Abs(divisor % 1) > Tolerance)
{
throw new ArithmeticException("The period frequency will not roll to the supplied termination date interval");
}
DateTime termDate = intervalToTerminationDate.Add(effectiveDate);
var periodDates = new List <DateTime>();
//DateTime periodStartDate = effectiveDate;
int multiplier = periodInterval.GetPeriodMultiplier();
periodDates.Add(effectiveDate);
for (int i = 1; i < divisor; i++)
{
var periodEndDate = DateAdd(effectiveDate, periodInterval.period, multiplier * i);
periodDates.Add(periodEndDate);
}
periodDates.Add(termDate);
return(periodDates);
}
///<summary>
///</summary>
///<param name="discountCurve"></param>
///<param name="baseDate"></param>
///<param name="forwardRateTenor"></param>
///<param name="priceableXibor"></param>
///<returns></returns>
public TermCurve ToPriceableXiborForwardCurve(TermCurve discountCurve, DateTime baseDate,
Period forwardRateTenor, PriceableXibor priceableXibor) //TODO
{
//CompoundingFrequency frequency = CompoundingFrequencyHelper.Create("Annual");
var dates = discountCurve.GetListTermDates();
var yearFractions = new List <double>();
foreach (var date in dates)
{
var yearFraction = (date - baseDate).TotalDays / 365.0;//TODO extend this with a general daycountraction.
yearFractions.Add(yearFraction);
}
var midValues = discountCurve.GetListMidValues();
var discountFactors = new List <double>(Array.ConvertAll(midValues.ToArray(), Convert.ToDouble));
var forwardTermCurve = TermCurve.Create(new List <TermPoint>());
var index = 0;
foreach (var startOfPeriodDateTime in dates)
{
var yearFractionsbeginPeriod = yearFractions[index];
var endOfPeriodDateTime = forwardRateTenor.Add(startOfPeriodDateTime);
var yearFractionAtEndOfPeriod = (endOfPeriodDateTime - baseDate).TotalDays / 365.0;
//get df corresponding to end of period
//
IInterpolation interpolation = new LinearRateInterpolation();
interpolation.Initialize(yearFractions.ToArray(), discountFactors.ToArray());
var dfAtEndOfPeriod = interpolation.ValueAt(yearFractionAtEndOfPeriod, true);
var dfAtTheBeginingOfPeriod = discountFactors[index];
var forwardRate = (dfAtTheBeginingOfPeriod / dfAtEndOfPeriod - 1) /
(yearFractionAtEndOfPeriod - yearFractionsbeginPeriod);
var zeroPoint = TermPointFactory.Create(Convert.ToDecimal(forwardRate), startOfPeriodDateTime);
forwardTermCurve.Add(zeroPoint);
++index;
}
return(forwardTermCurve);
}
public void AddPeriodWithOverlappingToShouldReturnExtendedPeriod()
{
// Arrange
var from1 = new DateTime(1111);
var to1 = new DateTime(3333);
var period1 = new Period(from1, to1);
var from2 = new DateTime(2222);
var to2 = new DateTime(4444);
var period2 = new Period(from2, to2);
ICollection expected = new Period[] { new Period(from1, to2) };
// Act
IEnumerable <Period> actual1 = period1 + period2;
IEnumerable <Period> actual2 = period1.Add(period2);
// Assert
CollectionAssert.AreEqual(expected, (ICollection)actual1.ToList());
CollectionAssert.AreEqual(expected, (ICollection)actual2.ToList());
}
public void AddDistinctPeriodShouldReturnBothPeriods()
{
// Arrange
var from1 = new DateTime(1111);
var to1 = new DateTime(3333);
var period1 = new Period(from1, to1);
var from2 = new DateTime(4444);
var to2 = new DateTime(6666);
var period2 = new Period(from2, to2);
ICollection expected = new Period[] { period1, period2 };
// Act
IEnumerable <Period> actual1 = period1 + period2;
IEnumerable <Period> actual2 = period1.Add(period2);
// Assert
CollectionAssert.AreEqual(expected, (ICollection)actual1.ToList());
CollectionAssert.AreEqual(expected, (ICollection)actual2.ToList());
}
/// <summary>
/// Convert the cap/floor PPD values to an ATM parVols structure
/// This method then calls the bootstrapper <see cref="ProcessCapFloorPpd"/>
/// to generate the capvol curve
/// </summary>
/// <param name="logger">The logger</param>
/// <param name="cache">The cache.</param>
/// <param name="rateCurve"></param>
/// <param name="capFloor"></param>
/// <param name="nameSpace"></param>
/// <returns></returns>
private static Market ProcessCapFloorPpd(ILogger logger, ICoreCache cache, string nameSpace, Market rateCurve, CapFloorATMMatrix capFloor)
{
var expiry = capFloor.GetExpiries();
var vols = capFloor.GetVolatilities();
var mkt = rateCurve;
var curve = new SimpleRateCurve(mkt);
var rawOffsets = curve.GetDiscountFactorOffsets();
var offsets = Array.ConvertAll(rawOffsets, IntToDouble);
var discountFactors = curve.GetDiscountFactors();
var volType = capFloor.GetVolatilityTypes();
var atmVols = new Dictionary <string, decimal>();
var settings = CreateCapFloorProperties(capFloor.GetVolatilitySettings());
var bc = BusinessCenterHelper.ToBusinessCalendar(cache, new[] { "AUSY" }, nameSpace);
// Use some logic to get the spot date to use
// Step through each vol and convert ppd to ATM vol
for (var i = 0; i < expiry.Length; i++)
{
// Create a Swaprate for each expiry
// Assume frequency = 4 months until 4 years tenor is reached
Period tv = PeriodHelper.Parse(expiry[i]);
//double tvYearFraction = tv.ToYearFraction();
//int frequency = tvYearFraction < 4 ? 4 : 2;
const int frequency = 4;
var rates = new SwapRate(logger, cache, nameSpace, "AUSY", curve.GetBaseDate(), "ACT/365.FIXED", discountFactors, curve.GetDiscountFactorOffsets(), frequency, BusinessDayConventionEnum.MODFOLLOWING);
switch (volType[i])
{
case "ETO":
{
DateTime spotDate = settings.GetValue("Calculation Date", DateTime.MinValue);
var rollConvention = settings.GetValue("RollConvention", BusinessDayConventionEnum.MODFOLLOWING);
DateTime etoDate = bc.Roll(tv.Add(spotDate), rollConvention);
atmVols[expiry[i]] = CalculateATMVolatility(settings, spotDate, etoDate, offsets, discountFactors, vols[i][0]);
}
break;
case "Cap/Floor":
{
DateTime spotDate = settings.GetValue("Calculation Date", DateTime.MinValue);
var rollConvention = settings.GetValue("RollConvention", BusinessDayConventionEnum.MODFOLLOWING);
DateTime expiryDate = bc.Roll(tv.Add(spotDate), rollConvention);
string tenor = DateToTenor(spotDate, expiryDate);
double tenorYearFraction = PeriodHelper.Parse(tenor).ToYearFraction();
// Add the caplet maturity to the expiry and then calculate the vol
atmVols[expiry[i]] = CalculateCAPATMVolatility(rates, spotDate, tenorYearFraction, vols[i][0]);
}
break;
}
}
// Fudge to switch the PPD header to ATM
// We've converted so we want the new name
var headers = capFloor.GetHeaders();
for (var i = 0; i < headers.Length; i++)
{
if (!headers[i].Contains("PPD"))
{
continue;
}
headers[i] = "ATM";
break;
}
// Convert our lovely dictionary to a grubby array of arrays
var volatilities = new object[atmVols.Keys.Count][];
var row = 0;
foreach (var key in atmVols.Keys)
{
volatilities[row] = new object[3];
volatilities[row][0] = key;
volatilities[row][1] = atmVols[key];
volatilities[row][2] = volType[row++];
}
var convertedCapFloor = new CapFloorATMMatrix(headers, volatilities, capFloor.GetVolatilitySettings(),
capFloor.baseDate.Value, capFloor.id);
return(ProcessCapFloorATM(logger, cache, nameSpace, rateCurve, convertedCapFloor));
}
///<summary>
///</summary>
///<param name="directionDateGeneration"></param>
///<param name="effectiveDate"></param>
///<param name="terminationDate"></param>
///<param name="periodInterval"></param>
///<param name="rollDayConvention"></param>
///<returns></returns>
///<exception cref="ArgumentOutOfRangeException"></exception>
public static DateTime[] GetUnadjustedDates(int directionDateGeneration, DateTime effectiveDate, DateTime terminationDate, Period periodInterval, RollConventionEnum rollDayConvention)
{
DateTime firstRegularPeriodStartDate;
DateTime lastRegularPeriodEndDate;
switch (directionDateGeneration)
{
case 1:
{
var result =
new List <DateTime>(GetUnadjustedDatesFromEffectiveDate(effectiveDate,
terminationDate,
periodInterval,
rollDayConvention,
out
firstRegularPeriodStartDate,
out
lastRegularPeriodEndDate));
// remove extra(faulty-generated) date from the end if a swap is shorter than a period
//
if (periodInterval.Add(effectiveDate) > terminationDate)
{
result.RemoveAt(result.Count - 1); //remove last element
}
// if there is a long stub at the back
//
if (result[0] != lastRegularPeriodEndDate &&
periodInterval.Add(lastRegularPeriodEndDate) < result[result.Count - 1]) //
{
// it it is long - make it short
//
DateTime realLastRegularPeriodEndDate = periodInterval.Add(lastRegularPeriodEndDate);
result.Insert(result.Count - 1, realLastRegularPeriodEndDate);
}
return(result.ToArray());
}
case 2:
{
var result =
new List <DateTime>(GetUnadjustedDatesFromTerminationDate(effectiveDate,
terminationDate,
periodInterval,
rollDayConvention,
out
firstRegularPeriodStartDate,
out
lastRegularPeriodEndDate));
// if there is a long stub at the front
//
if (result[0] != firstRegularPeriodStartDate &&
periodInterval.Subtract(firstRegularPeriodStartDate) > result[0])
// add a check if a period is short ...
{
// it it is long - make it short
//
DateTime realFirstRegularPeriodStartDate = periodInterval.Subtract(firstRegularPeriodStartDate);
result.Insert(1, realFirstRegularPeriodStartDate);
}
return(result.ToArray());
}
default:
{
const string message =
"Argument value is out of range. Only 1 and 2 are the valid values for this argument";
throw new ArgumentOutOfRangeException(nameof(directionDateGeneration), directionDateGeneration,
message);
}
}
}
