com.opengamma.financial.analytics.model.forex.option.callspreadblack.FXDigitalCallSpreadBlackVegaFunction.java Source code

Introduction

Here is the source code for com.opengamma.financial.analytics.model.forex.option.callspreadblack.FXDigitalCallSpreadBlackVegaFunction.java

Source

/**
 * Copyright (C) 2012 - present by OpenGamma Inc. and the OpenGamma group of companies
 * 
 * Please see distribution for license.
 */
package com.opengamma.financial.analytics.model.forex.option.callspreadblack;

import java.util.Collections;
import java.util.Set;

import com.google.common.collect.Iterables;
import com.opengamma.analytics.financial.forex.calculator.PresentValueBlackVolatilitySensitivityCallSpreadBlackForexCalculator;
import com.opengamma.analytics.financial.forex.method.PresentValueForexBlackVolatilitySensitivity;
import com.opengamma.analytics.financial.interestrate.InstrumentDerivative;
import com.opengamma.analytics.financial.model.option.definition.ForexOptionDataBundle;
import com.opengamma.engine.ComputationTarget;
import com.opengamma.engine.function.FunctionExecutionContext;
import com.opengamma.engine.function.FunctionInputs;
import com.opengamma.engine.value.ComputedValue;
import com.opengamma.engine.value.ValueRequirement;
import com.opengamma.engine.value.ValueRequirementNames;
import com.opengamma.engine.value.ValueSpecification;
import com.opengamma.financial.analytics.model.CalculationPropertyNamesAndValues;
import com.opengamma.util.money.CurrencyAmount;

/**
 * The function calculating the Black volatility sensitivity to each point to which the option is sensitive..
 */
public class FXDigitalCallSpreadBlackVegaFunction extends FXDigitalCallSpreadBlackSingleValuedFunction {

    public FXDigitalCallSpreadBlackVegaFunction() {
        super(ValueRequirementNames.VALUE_VEGA);
    }

    @Override
    protected Set<ComputedValue> getResult(final InstrumentDerivative fxDigital,
            final ForexOptionDataBundle<?> data, final ComputationTarget target,
            final Set<ValueRequirement> desiredValues, final FunctionInputs inputs, final ValueSpecification spec,
            final FunctionExecutionContext executionContext) {
        final String spreadName = Iterables.getOnlyElement(desiredValues)
                .getConstraint(CalculationPropertyNamesAndValues.PROPERTY_CALL_SPREAD_VALUE);
        final double spread = Double.parseDouble(spreadName);
        final PresentValueBlackVolatilitySensitivityCallSpreadBlackForexCalculator calculator = new PresentValueBlackVolatilitySensitivityCallSpreadBlackForexCalculator(
                spread);
        final PresentValueForexBlackVolatilitySensitivity result = fxDigital.accept(calculator, data);
        final CurrencyAmount vegaValue = result.toSingleValue();
        return Collections.singleton(new ComputedValue(spec, vegaValue.getAmount()));
    }

}