/**
* Copyright (C) 2013 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.financial.analytics.model.forex.forward;
import java.util.Map;
import java.util.Set;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.opengamma.OpenGammaRuntimeException;
import com.opengamma.core.security.Security;
import com.opengamma.engine.ComputationTarget;
import com.opengamma.engine.function.AbstractFunction;
import com.opengamma.engine.function.FunctionCompilationContext;
import com.opengamma.engine.function.FunctionExecutionContext;
import com.opengamma.engine.function.FunctionInputs;
import com.opengamma.engine.target.ComputationTargetType;
import com.opengamma.engine.value.ComputedValue;
import com.opengamma.engine.value.ValueProperties;
import com.opengamma.engine.value.ValuePropertyNames;
import com.opengamma.engine.value.ValueRequirement;
import com.opengamma.engine.value.ValueRequirementNames;
import com.opengamma.engine.value.ValueSpecification;
import com.opengamma.financial.analytics.CurrencyLabelledMatrix1D;
import com.opengamma.financial.analytics.model.CalculationPropertyNamesAndValues;
import com.opengamma.financial.analytics.model.forex.ForexVisitors;
import com.opengamma.financial.currency.CurrencyMatrixSpotSourcingFunction;
import com.opengamma.financial.security.FinancialSecurity;
import com.opengamma.financial.security.FinancialSecurityTypes;
import com.opengamma.financial.security.swap.SwapSecurity;
import com.opengamma.util.async.AsynchronousExecution;
import com.opengamma.util.money.Currency;
/**
* Calculates Present Value on FX Forward instruments.
* @deprecated Deprecated
*/
@Deprecated
public class FXForwardPresentValueFunction extends AbstractFunction.NonCompiledInvoker {
@Override
public ComputationTargetType getTargetType() {
return FinancialSecurityTypes.FX_FORWARD_SECURITY.or(FinancialSecurityTypes.NON_DELIVERABLE_FX_FORWARD_SECURITY).or(FinancialSecurityTypes.SWAP_SECURITY);
}
@Override
public boolean canApplyTo(final FunctionCompilationContext context, final ComputationTarget target) {
final Security sec = target.getSecurity();
if (sec instanceof SwapSecurity) {
// Can only apply to cross currency swaps
final FinancialSecurity security = (FinancialSecurity) target.getSecurity();
try {
final Currency payCurrency = getPayCurrency(security);
if (payCurrency == null) {
return false;
}
final Currency receiveCurrency = getReceiveCurrency(security);
if (receiveCurrency == null) {
return false;
}
if (payCurrency.equals(receiveCurrency)) {
return false;
}
} catch (final UnsupportedOperationException e) {
return false;
}
}
return true;
}
@Override
public Set<ValueSpecification> getResults(final FunctionCompilationContext context, final ComputationTarget target) {
return ImmutableSet.of(new ValueSpecification(ValueRequirementNames.PRESENT_VALUE, target.toSpecification(), ValueProperties.all()));
}
@Override
public Set<ValueRequirement> getRequirements(final FunctionCompilationContext context, final ComputationTarget target, final ValueRequirement desiredValue) {
final ValueProperties constraints = desiredValue.getConstraints();
final Set<String> calculationMethod = constraints.getValues(ValuePropertyNames.CALCULATION_METHOD);
if (calculationMethod != null && calculationMethod.size() == 1) {
if (!CalculationPropertyNamesAndValues.DISCOUNTING.equals(Iterables.getOnlyElement(calculationMethod))) {
return null;
}
}
final ValueRequirement fxPvRequirement = new ValueRequirement(ValueRequirementNames.FX_PRESENT_VALUE, target.toSpecification(), constraints.copy().withoutAny(ValuePropertyNames.CURRENCY).get());
final FinancialSecurity security = (FinancialSecurity) target.getSecurity();
final Currency payCurrency = getPayCurrency(security);
final Currency receiveCurrency = getReceiveCurrency(security);
final ValueRequirement spotRateRequirement = CurrencyMatrixSpotSourcingFunction.getConversionRequirement(payCurrency, receiveCurrency);
return ImmutableSet.of(fxPvRequirement, spotRateRequirement);
}
@Override
public Set<ValueSpecification> getResults(final FunctionCompilationContext context, final ComputationTarget target, final Map<ValueSpecification, ValueRequirement> inputs) {
ValueProperties properties = null;
for (final Map.Entry<ValueSpecification, ValueRequirement> entry : inputs.entrySet()) {
if (entry.getKey().getValueName().equals(ValueRequirementNames.FX_PRESENT_VALUE)) {
properties = entry.getKey().getProperties();
break;
}
}
if (properties == null) {
return null;
}
final Currency currency = getPayCurrency((FinancialSecurity) target.getSecurity());
return ImmutableSet.of(new ValueSpecification(ValueRequirementNames.PRESENT_VALUE, target.toSpecification(), getResultProperties(currency, properties.copy())));
}
@Override
public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs, final ComputationTarget target,
final Set<ValueRequirement> desiredValues) throws AsynchronousExecution {
final FinancialSecurity security = (FinancialSecurity) target.getSecurity();
final Currency payCurrency = getPayCurrency(security);
final Currency receiveCurrency = getReceiveCurrency(security);
final ComputedValue input = inputs.getComputedValue(ValueRequirementNames.FX_PRESENT_VALUE);
final ValueSpecification inputSpec = input.getSpecification();
final CurrencyLabelledMatrix1D fxPresentValue = (CurrencyLabelledMatrix1D) input.getValue();
if (fxPresentValue.size() != 2) {
throw new OpenGammaRuntimeException("Expected " + ValueRequirementNames.FX_PRESENT_VALUE + " input to contain 2 currency values, but found " + fxPresentValue.size());
}
int payIndex = -1;
int receiveIndex = -1;
for (int i = 0; i < 2; i++) {
final Currency currency = fxPresentValue.getKeys()[i];
if (payCurrency.equals(currency)) {
payIndex = i;
} else if (receiveCurrency.equals(currency)) {
receiveIndex = i;
} else {
throw new OpenGammaRuntimeException(ValueRequirementNames.FX_PRESENT_VALUE + " contains unexpected currency " + currency + ". Expected " + payCurrency + " or " + receiveCurrency + ".");
}
}
final double payValue = fxPresentValue.getValues()[payIndex];
final double receiveValue = fxPresentValue.getValues()[receiveIndex];
final double spot = (Double) inputs.getValue(ValueRequirementNames.SPOT_RATE);
final double pv = payValue + spot * receiveValue;
return ImmutableSet.of(new ComputedValue(getResultSpec(target, inputSpec.getProperties().copy()), pv));
}
/**
* @param target The target
* @param fxPresentValueProperties The properties of the FX present value input
* @return The result specification
*/
protected ValueSpecification getResultSpec(final ComputationTarget target, final ValueProperties.Builder fxPresentValueProperties) {
final Currency currency = getPayCurrency((FinancialSecurity) target.getSecurity());
return new ValueSpecification(ValueRequirementNames.PRESENT_VALUE, target.toSpecification(), getResultProperties(currency, fxPresentValueProperties));
}
/**
* @param currency The currency of the result
* @param fxPresentValueProperties The properties of the FX present value input
* @return The result properties
*/
protected ValueProperties getResultProperties(final Currency currency, final ValueProperties.Builder fxPresentValueProperties) {
return fxPresentValueProperties.withoutAny(ValuePropertyNames.FUNCTION)
.with(ValuePropertyNames.FUNCTION, getUniqueId())
.with(ValuePropertyNames.CURRENCY, currency.getCode())
.get();
}
/**
* Gets the pay currency of the security.
* @param security The security
* @return The pay currency
*/
protected Currency getPayCurrency(final FinancialSecurity security) {
return security.accept(ForexVisitors.getPayCurrencyVisitor());
}
/**
* Gets the receive currency of the security.
* @param security The security
* @return The receive currency
*/
protected Currency getReceiveCurrency(final FinancialSecurity security) {
return security.accept(ForexVisitors.getReceiveCurrencyVisitor());
}
}