/**
* Copyright (C) 2013 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.financial.analytics.model.shiftedlognormal;
import static com.opengamma.engine.value.ValuePropertyNames.CURVE;
import static com.opengamma.engine.value.ValueRequirementNames.CURVE_BUNDLE;
import static com.opengamma.engine.value.ValueRequirementNames.PV01;
import java.util.Collection;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.threeten.bp.Instant;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import com.opengamma.OpenGammaRuntimeException;
import com.opengamma.analytics.financial.forex.method.FXMatrix;
import com.opengamma.analytics.financial.interestrate.InstrumentDerivative;
import com.opengamma.analytics.financial.interestrate.InstrumentDerivativeVisitor;
import com.opengamma.analytics.financial.provider.calculator.blackcap.PresentValueCurveSensitivityBlackSmileShiftCapCalculator;
import com.opengamma.analytics.financial.provider.calculator.discounting.PV01CurveParametersCalculator;
import com.opengamma.analytics.financial.provider.description.interestrate.BlackSmileShiftCapProviderInterface;
import com.opengamma.analytics.util.amount.ReferenceAmount;
import com.opengamma.engine.ComputationTarget;
import com.opengamma.engine.function.CompiledFunctionDefinition;
import com.opengamma.engine.function.FunctionCompilationContext;
import com.opengamma.engine.function.FunctionExecutionContext;
import com.opengamma.engine.function.FunctionInputs;
import com.opengamma.engine.value.ComputedValue;
import com.opengamma.engine.value.ValueProperties;
import com.opengamma.engine.value.ValueRequirement;
import com.opengamma.engine.value.ValueRequirementNames;
import com.opengamma.engine.value.ValueSpecification;
import com.opengamma.util.money.Currency;
import com.opengamma.util.tuple.Pair;
/**
* Calculates the PV01 of cap/floors using a Black surface and curves constructed using the discounting method.
*/
public class ShiftedLognormalDiscountingPV01CapFloorFunction extends ShiftedLognormalDiscountingCapFloorFunction {
/** The PV01 calculator */
private static final InstrumentDerivativeVisitor<BlackSmileShiftCapProviderInterface, ReferenceAmount<Pair<String, Currency>>> CALCULATOR = new PV01CurveParametersCalculator<>(
PresentValueCurveSensitivityBlackSmileShiftCapCalculator.getInstance());
/**
* Sets the value requirements to {@link ValueRequirementNames#PV01}
*/
public ShiftedLognormalDiscountingPV01CapFloorFunction() {
super(PV01);
}
@Override
public CompiledFunctionDefinition compile(final FunctionCompilationContext context, final Instant atInstant) {
return new ShiftedLognormalDiscountingCompiledFunction(getTargetToDefinitionConverter(context), getDefinitionToDerivativeConverter(context), true) {
@Override
protected Set<ComputedValue> getValues(final FunctionExecutionContext executionContext, final FunctionInputs inputs, final ComputationTarget target,
final Set<ValueRequirement> desiredValues, final InstrumentDerivative derivative, final FXMatrix fxMatrix) {
final BlackSmileShiftCapProviderInterface blackData = getBlackSurface(executionContext, inputs, target, fxMatrix);
final ValueRequirement desiredValue = Iterables.getOnlyElement(desiredValues);
final String desiredCurveName = desiredValue.getConstraint(CURVE);
final ValueProperties properties = desiredValue.getConstraints();
final ReferenceAmount<Pair<String, Currency>> pv01 = derivative.accept(CALCULATOR, blackData);
final Set<ComputedValue> results = new HashSet<>();
boolean curveNameFound = false;
for (final Map.Entry<Pair<String, Currency>, Double> entry : pv01.getMap().entrySet()) {
final String curveName = entry.getKey().getFirst();
if (desiredCurveName.equals(curveName)) {
curveNameFound = true;
}
final ValueProperties curveSpecificProperties = properties.copy().withoutAny(CURVE).with(CURVE, curveName).get();
final ValueSpecification spec = new ValueSpecification(PV01, target.toSpecification(), curveSpecificProperties);
results.add(new ComputedValue(spec, entry.getValue()));
}
if (!curveNameFound) {
throw new OpenGammaRuntimeException("Could not get sensitivities to " + desiredCurveName + " for " + target.getName());
}
return results;
}
@Override
protected Collection<ValueProperties.Builder> getResultProperties(final FunctionCompilationContext compilationContext, final ComputationTarget target) {
final Collection<ValueProperties.Builder> properties = super.getResultProperties(compilationContext, target);
for (ValueProperties.Builder builder : properties) {
builder.withAny(CURVE);
}
return properties;
}
@Override
protected boolean requirementsSet(final ValueProperties constraints) {
if (super.requirementsSet(constraints)) {
final Set<String> curves = constraints.getValues(CURVE);
if (curves == null) {
return false;
}
return true;
}
return false;
}
@Override
public Set<ValueSpecification> getResults(final FunctionCompilationContext compilationContext, final ComputationTarget target, final Map<ValueSpecification, ValueRequirement> inputs) {
Set<String> curveNames = null;
for (final Map.Entry<ValueSpecification, ValueRequirement> entry : inputs.entrySet()) {
final ValueSpecification key = entry.getKey();
if (key.getValueName().equals(CURVE_BUNDLE)) {
curveNames = key.getProperties().getValues(CURVE);
break;
}
}
if (curveNames == null) {
return null;
}
final Collection<ValueProperties.Builder> commonPropertiesSet = super.getResultProperties(compilationContext, target);
final Set<ValueSpecification> results = Sets.newHashSetWithExpectedSize(commonPropertiesSet.size() * curveNames.size());
for (ValueProperties.Builder commonProperties : commonPropertiesSet) {
for (String curveName : curveNames) {
final ValueProperties properties = commonProperties.withoutAny(CURVE).with(CURVE, curveName).get();
results.add(new ValueSpecification(PV01, target.toSpecification(), properties));
}
}
return results;
}
};
}
}