/**
* Copyright (C) 2012 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.analytics.financial.provider.description.forex;
import java.util.List;
import java.util.Set;
import org.apache.commons.lang.ObjectUtils;
import com.opengamma.analytics.financial.model.volatility.curve.BlackForexTermStructureParameters;
import com.opengamma.analytics.financial.provider.description.interestrate.MulticurveProviderInterface;
import com.opengamma.analytics.financial.provider.sensitivity.multicurve.ForwardSensitivity;
import com.opengamma.util.ArgumentChecker;
import com.opengamma.util.money.Currency;
import com.opengamma.util.tuple.DoublesPair;
import com.opengamma.util.tuple.Pair;
/**
* Interface for Forex Black with smile parameters provider for a currency pair.
*/
public class BlackForexFlatProvider implements BlackForexFlatProviderInterface {
/**
* The multicurve provider.
*/
private final MulticurveProviderInterface _multicurveProvider;
/**
* The volatility model for one currency pair.
*/
private final BlackForexTermStructureParameters _volatility;
/**
* The currency pair for which the volatility data are valid.
*/
private final Pair<Currency, Currency> _currencyPair;
/**
* Constructor from exiting multicurveProvider and volatility model. The given provider and parameters are used for the new provider (the same maps are used, not copied).
* @param multicurves The multi-curves provider, not null
* @param volatility Volatility, not null
* @param currencyPair The currency pair, not null
*/
public BlackForexFlatProvider(final MulticurveProviderInterface multicurves, final BlackForexTermStructureParameters volatility, final Pair<Currency, Currency> currencyPair) {
ArgumentChecker.notNull(multicurves, "multicurves");
ArgumentChecker.notNull(volatility, "volatility");
ArgumentChecker.notNull(currencyPair, "currencyPair");
_multicurveProvider = multicurves;
_volatility = volatility;
_currencyPair = currencyPair;
}
@Override
public BlackForexFlatProvider copy() {
final MulticurveProviderInterface multicurveProvider = _multicurveProvider.copy();
return new BlackForexFlatProvider(multicurveProvider, _volatility, _currencyPair);
}
@Override
public BlackForexTermStructureParameters getVolatility() {
return _volatility;
}
@Override
public Pair<Currency, Currency> getCurrencyPair() {
return _currencyPair;
}
@Override
public boolean checkCurrencies(final Currency ccy1, final Currency ccy2) {
if ((ccy1.equals(_currencyPair.getFirst())) && ccy2.equals(_currencyPair.getSecond())) {
return true;
}
if ((ccy2.equals(_currencyPair.getFirst())) && ccy1.equals(_currencyPair.getSecond())) {
return true;
}
return false;
}
@Override
public MulticurveProviderInterface getMulticurveProvider() {
return _multicurveProvider;
}
/**
* Returns volatility for a expiration, strike and forward. The volatility take into account the curerncy order.
* @param ccy1 The first currency.
* @param ccy2 The second currency.
* @param time The expiration time.
* @return The volatility.
*/
@Override
public double getVolatility(final Currency ccy1, final Currency ccy2, final double time) {
ArgumentChecker.isTrue(checkCurrencies(ccy1, ccy2), "Incompatible currencies");
return getVolatility().getVolatility(time);
}
@Override
public Double[] getVolatilityTimeSensitivity(final Currency ccy1, final Currency ccy2, final double time) {
ArgumentChecker.isTrue(checkCurrencies(ccy1, ccy2), "Incompatible currencies");
return getVolatility().getVolatilityTimeSensitivity(time);
}
@Override
public double[] parameterSensitivity(final String name, final List<DoublesPair> pointSensitivity) {
return _multicurveProvider.parameterSensitivity(name, pointSensitivity);
}
@Override
public double[] parameterForwardSensitivity(final String name, final List<ForwardSensitivity> pointSensitivity) {
return _multicurveProvider.parameterForwardSensitivity(name, pointSensitivity);
}
@Override
public Set<String> getAllCurveNames() {
return _multicurveProvider.getAllCurveNames();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + _currencyPair.hashCode();
result = prime * result + _multicurveProvider.hashCode();
result = prime * result + _volatility.hashCode();
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof BlackForexFlatProvider)) {
return false;
}
final BlackForexFlatProvider other = (BlackForexFlatProvider) obj;
if (!ObjectUtils.equals(_currencyPair, other._currencyPair)) {
return false;
}
if (!ObjectUtils.equals(_multicurveProvider, other._multicurveProvider)) {
return false;
}
if (!ObjectUtils.equals(_volatility, other._volatility)) {
return false;
}
return true;
}
}