/**
* Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.web.server.conversion;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.opengamma.analytics.financial.model.interestrate.curve.YieldCurve;
import com.opengamma.analytics.math.curve.FunctionalDoublesCurve;
import com.opengamma.analytics.math.curve.InterpolatedDoublesCurve;
import com.opengamma.analytics.math.curve.NodalDoublesCurve;
import com.opengamma.engine.value.ValueSpecification;
import com.opengamma.financial.analytics.ircurve.YieldCurveInterpolatingFunction;
/**
* Converter for {@link YieldCurve} objects.
*/
public class YieldCurveConverter implements ResultConverter<YieldCurve> {
@Override
public Object convertForDisplay(ResultConverterCache context, ValueSpecification valueSpec, YieldCurve value, ConversionMode mode) {
Map<String, Object> result = new HashMap<String, Object>();
if (value.getCurve() instanceof InterpolatedDoublesCurve) {
InterpolatedDoublesCurve interpolatedCurve = (InterpolatedDoublesCurve) value.getCurve();
// Summary view includes only the actual points of the curve
List<Double[]> data = new ArrayList<Double[]>();
double[] xData = interpolatedCurve.getXDataAsPrimitive();
double[] yData = interpolatedCurve.getYDataAsPrimitive();
for (int i = 0; i < interpolatedCurve.size(); i++) {
data.add(new Double[] {xData[i], yData[i]});
}
result.put("summary", data);
if (mode == ConversionMode.FULL) {
NodalDoublesCurve detailedCurve = YieldCurveInterpolatingFunction.interpolateCurve(interpolatedCurve);
List<Double[]> detailedData = getData(detailedCurve);
result.put("detailed", detailedData);
}
return result;
} else if (value.getCurve() instanceof FunctionalDoublesCurve) {
FunctionalDoublesCurve curve = (FunctionalDoublesCurve) value.getCurve();
int n = 34;
List<Double[]> data = new ArrayList<Double[]>();
double[] xData = new double[n];
double[] yData = new double[n];
for (int i = 0; i < n; i++) {
if (i == 0) {
xData[0] = 1. / 12;
} else if (i == 1) {
xData[1] = 0.25;
} else if (i == 2) {
xData[2] = 0.5;
} else if (i == 3) {
xData[3] = 0.75;
} else {
xData[i] = i - 3;
}
yData[i] = curve.getYValue(xData[i]);
data.add(new Double[]{xData[i], yData[i]});
}
result.put("summary", data);
if (mode == ConversionMode.FULL) {
NodalDoublesCurve detailedCurve = YieldCurveInterpolatingFunction.interpolateCurve(curve);
List<Double[]> detailedData = getData(detailedCurve);
result.put("detailed", detailedData);
}
return result;
}
result.put("summary", "Can only display InterpolatedDoublesCurve and FunctionalDoublesCurve");
return result;
}
private List<Double[]> getData(NodalDoublesCurve detailedCurve) {
List<Double[]> detailedData = new ArrayList<Double[]>();
Double[] xs = detailedCurve.getXData();
Double[] ys = detailedCurve.getYData();
for (int i = 0; i < ys.length; i++) {
detailedData.add(new Double[]{xs[i], ys[i]});
}
return detailedData;
}
@Override
public Object convertForHistory(ResultConverterCache context, ValueSpecification valueSpec, YieldCurve value) {
return null;
}
@Override
public String convertToText(ResultConverterCache context, ValueSpecification valueSpec, YieldCurve value) {
if (value.getCurve() instanceof InterpolatedDoublesCurve) {
StringBuilder sb = new StringBuilder();
InterpolatedDoublesCurve interpolatedCurve = (InterpolatedDoublesCurve) value.getCurve();
double[] xData = interpolatedCurve.getXDataAsPrimitive();
double[] yData = interpolatedCurve.getYDataAsPrimitive();
boolean isFirst = true;
for (int i = 0; i < interpolatedCurve.size(); i++) {
if (isFirst) {
isFirst = false;
} else {
sb.append("; ");
}
sb.append(xData[i]).append("=").append(yData[i]);
}
return sb.length() > 0 ? sb.toString() : null;
} else {
return value.getClass().getSimpleName();
}
}
@Override
public String getFormatterName() {
return "CURVE";
}
}