// parses the swap
internal Swap parseSwap(FpmlDocument document, XmlElement tradeEl, TradeInfoBuilder tradeInfoBuilder)
{
XmlElement swapEl = tradeEl.getChild("swap");
ImmutableList <XmlElement> legEls = swapEl.getChildren("swapStream");
ImmutableList.Builder <SwapLeg> legsBuilder = ImmutableList.builder();
foreach (XmlElement legEl in legEls)
{
// calculation
XmlElement calcPeriodAmountEl = legEl.getChild("calculationPeriodAmount");
XmlElement calcEl = calcPeriodAmountEl.findChild("calculation").orElse(XmlElement.ofChildren("calculation", ImmutableList.of()));
PeriodicSchedule accrualSchedule = parseSwapAccrualSchedule(legEl, document);
PaymentSchedule paymentSchedule = parseSwapPaymentSchedule(legEl, calcEl, document);
// known amount or rate calculation
Optional <XmlElement> knownAmountOptEl = calcPeriodAmountEl.findChild("knownAmountSchedule");
if (knownAmountOptEl.Present)
{
XmlElement knownAmountEl = knownAmountOptEl.get();
document.validateNotPresent(legEl, "stubCalculationPeriodAmount");
document.validateNotPresent(legEl, "resetDates");
// pay/receive and counterparty
PayReceive payReceive = document.parsePayerReceiver(legEl, tradeInfoBuilder);
ValueSchedule amountSchedule = parseSchedule(knownAmountEl, document);
// build
legsBuilder.add(KnownAmountSwapLeg.builder().payReceive(payReceive).accrualSchedule(accrualSchedule).paymentSchedule(paymentSchedule).amount(amountSchedule).currency(document.parseCurrency(knownAmountEl.getChild("currency"))).build());
}
else
{
document.validateNotPresent(calcEl, "fxLinkedNotionalSchedule");
document.validateNotPresent(calcEl, "futureValueNotional");
// pay/receive and counterparty
PayReceive payReceive = document.parsePayerReceiver(legEl, tradeInfoBuilder);
NotionalSchedule notionalSchedule = parseSwapNotionalSchedule(legEl, calcEl, document);
RateCalculation calculation = parseSwapCalculation(legEl, calcEl, accrualSchedule, document);
// build
legsBuilder.add(RateCalculationSwapLeg.builder().payReceive(payReceive).accrualSchedule(accrualSchedule).paymentSchedule(paymentSchedule).notionalSchedule(notionalSchedule).calculation(calculation).build());
}
}
return(Swap.of(legsBuilder.build()));
}