Java tutorial
/** * Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies * * Please see distribution for license. */ package com.opengamma.financial.analytics; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; import org.apache.commons.lang.Validate; import com.opengamma.core.position.Position; import com.opengamma.core.security.Security; import com.opengamma.engine.ComputationTarget; import com.opengamma.engine.ComputationTargetType; 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.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.fixedincome.YieldCurveNodeSensitivityDataBundle; import com.opengamma.util.money.Currency; import com.opengamma.util.money.MultipleCurrencyAmount; import com.opengamma.util.tuple.DoublesPair; /** * Able to scale values produced by the rest of the OG-Financial package. */ public class PositionScalingFunction extends AbstractFunction.NonCompiledInvoker { private final String _requirementName; public PositionScalingFunction(final String requirementName) { Validate.notNull(requirementName, "Requirement name"); _requirementName = requirementName; } @Override public String getShortName() { return "PositionScaling for " + _requirementName; } @Override public ComputationTargetType getTargetType() { return ComputationTargetType.POSITION; } @Override public boolean canApplyTo(final FunctionCompilationContext context, final ComputationTarget target) { return true; } @Override public Set<ValueSpecification> getResults(final FunctionCompilationContext context, final ComputationTarget target) { return Collections.singleton( new ValueSpecification(_requirementName, target.toSpecification(), ValueProperties.all())); } @Override public Set<ValueRequirement> getRequirements(final FunctionCompilationContext context, final ComputationTarget target, final ValueRequirement desiredValue) { final Position position = target.getPosition(); final Security security = position.getSecurity(); final ValueRequirement requirement = new ValueRequirement(_requirementName, ComputationTargetType.SECURITY, security.getUniqueId(), desiredValue.getConstraints().withoutAny(ValuePropertyNames.FUNCTION)); return Collections.singleton(requirement); } protected ValueProperties getResultProperties(final ValueSpecification input) { return input.getProperties().copy().withoutAny(ValuePropertyNames.FUNCTION) .with(ValuePropertyNames.FUNCTION, getUniqueId()).get(); } @Override public Set<ValueSpecification> getResults(final FunctionCompilationContext context, final ComputationTarget target, final Map<ValueSpecification, ValueRequirement> inputs) { final ValueSpecification input = inputs.keySet().iterator().next(); final ValueSpecification specification = new ValueSpecification(_requirementName, target.toSpecification(), getResultProperties(input)); return Collections.singleton(specification); } @Override public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs, final ComputationTarget target, final Set<ValueRequirement> desiredValues) { final ComputedValue input = inputs.getAllValues().iterator().next(); final Object value = input.getValue(); final ValueSpecification specification = new ValueSpecification(_requirementName, target.toSpecification(), getResultProperties(input.getSpecification())); ComputedValue scaledValue = null; if (value instanceof Double) { Double doubleValue = (Double) value; final double quantity = target.getPosition().getQuantity().doubleValue(); doubleValue *= quantity; scaledValue = new ComputedValue(specification, doubleValue); } else if (value instanceof MultipleCurrencyAmount) { final MultipleCurrencyAmount m = (MultipleCurrencyAmount) value; final double quantity = target.getPosition().getQuantity().doubleValue(); scaledValue = new ComputedValue(specification, m.multipliedBy(quantity)); } else if (value instanceof YieldCurveNodeSensitivityDataBundle) { final YieldCurveNodeSensitivityDataBundle nodeSensitivities = (YieldCurveNodeSensitivityDataBundle) value; final double quantity = target.getPosition().getQuantity().doubleValue(); final Currency ccy = nodeSensitivities.getCurrency(); final String name = nodeSensitivities.getYieldCurveName(); final DoubleLabelledMatrix1D m = nodeSensitivities.getLabelledMatrix(); final double[] scaled = getScaledMatrix(m.getValues(), quantity); scaledValue = new ComputedValue(specification, new YieldCurveNodeSensitivityDataBundle(ccy, new DoubleLabelledMatrix1D(m.getKeys(), m.getLabels(), scaled), name)); } else if (value instanceof DoubleLabelledMatrix1D) { final DoubleLabelledMatrix1D m = (DoubleLabelledMatrix1D) value; final double quantity = target.getPosition().getQuantity().doubleValue(); final double[] scaled = getScaledMatrix(m.getValues(), quantity); scaledValue = new ComputedValue(specification, new DoubleLabelledMatrix1D(m.getKeys(), m.getLabels(), scaled)); } else if (value instanceof LocalDateLabelledMatrix1D) { final LocalDateLabelledMatrix1D m = (LocalDateLabelledMatrix1D) value; final double quantity = target.getPosition().getQuantity().doubleValue(); final double[] scaled = getScaledMatrix(m.getValues(), quantity); scaledValue = new ComputedValue(specification, new LocalDateLabelledMatrix1D(m.getKeys(), m.getLabels(), scaled)); } else if (value instanceof ZonedDateTimeLabelledMatrix1D) { final ZonedDateTimeLabelledMatrix1D m = (ZonedDateTimeLabelledMatrix1D) value; final double quantity = target.getPosition().getQuantity().doubleValue(); final double[] scaled = getScaledMatrix(m.getValues(), quantity); scaledValue = new ComputedValue(specification, new ZonedDateTimeLabelledMatrix1D(m.getKeys(), m.getLabels(), scaled)); } else if (value instanceof CurrencyLabelledMatrix1D) { final CurrencyLabelledMatrix1D m = (CurrencyLabelledMatrix1D) value; final double quantity = target.getPosition().getQuantity().doubleValue(); final double[] scaled = getScaledMatrix(m.getValues(), quantity); scaledValue = new ComputedValue(specification, new CurrencyLabelledMatrix1D(m.getKeys(), m.getLabels(), scaled)); } else if (value instanceof StringLabelledMatrix1D) { final StringLabelledMatrix1D m = (StringLabelledMatrix1D) value; final double quantity = target.getPosition().getQuantity().doubleValue(); final double[] scaled = getScaledMatrix(m.getValues(), quantity); scaledValue = new ComputedValue(specification, new StringLabelledMatrix1D(m.getKeys(), scaled)); } else if (_requirementName.equals(ValueRequirementNames.PRESENT_VALUE_CURVE_SENSITIVITY)) { //TODO this should probably not be done like this @SuppressWarnings("unchecked") final Map<String, List<DoublesPair>> map = (Map<String, List<DoublesPair>>) value; final Map<String, List<DoublesPair>> scaled = new HashMap<String, List<DoublesPair>>(); for (final Map.Entry<String, List<DoublesPair>> entry : map.entrySet()) { final List<DoublesPair> scaledList = new ArrayList<DoublesPair>(); for (final DoublesPair pair : entry.getValue()) { scaledList.add(DoublesPair.of(pair.first, pair.second * target.getPosition().getQuantity().doubleValue())); } scaled.put(entry.getKey(), scaledList); } scaledValue = new ComputedValue(specification, scaled); } else if (value instanceof DoubleLabelledMatrix2D) { final DoubleLabelledMatrix2D matrix = (DoubleLabelledMatrix2D) value; final Double[] xKeys = matrix.getXKeys(); final Object[] xLabels = matrix.getXLabels(); final Double[] yKeys = matrix.getYKeys(); final Object[] yLabels = matrix.getYLabels(); final double[][] values = matrix.getValues(); final int n = values.length; if (n == 0) { return Collections.singleton(new ComputedValue(specification, value)); } final int m = values[0].length; final double[][] scaledValues = new double[n][m]; final double scale = target.getPosition().getQuantity().doubleValue(); for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { scaledValues[i][j] = values[i][j] * scale; } } scaledValue = new ComputedValue(specification, new DoubleLabelledMatrix2D(xKeys, xLabels, yKeys, yLabels, scaledValues)); } else if (value instanceof DoubleLabelledMatrix3D) { final DoubleLabelledMatrix3D matrix = (DoubleLabelledMatrix3D) value; final Double[] xKeys = matrix.getXKeys(); final Object[] xLabels = matrix.getXLabels(); final Double[] yKeys = matrix.getYKeys(); final Object[] yLabels = matrix.getYLabels(); final Double[] zKeys = matrix.getZKeys(); final Object[] zLabels = matrix.getZLabels(); final double[][][] values = matrix.getValues(); final int n = values.length; final int m = values[0].length; final int l = values[0][0].length; final double[][][] scaledValues = new double[n][m][l]; final double scale = target.getPosition().getQuantity().doubleValue(); for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { for (int k = 0; k < l; k++) { scaledValues[i][j][k] = values[i][j][k] * scale; } } } scaledValue = new ComputedValue(specification, new DoubleLabelledMatrix3D(xKeys, xLabels, yKeys, yLabels, zKeys, zLabels, scaledValues)); } else { //REVIEW emcleod 27-1-2011 aaaaaaaaaarrrrrrrrgggggghhhhhhhhh Why is nothing done here? scaledValue = new ComputedValue(specification, value); } return Collections.singleton(scaledValue); } private double[] getScaledMatrix(final double[] values, final double quantity) { final int n = values.length; final double[] scaled = new double[n]; for (int i = 0; i < n; i++) { scaled[i] = values[i] * quantity; } return scaled; } }