com.opengamma.financial.analytics.model.forex.AbstractForexSpotRateMarketDataFunction.java Source code

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Here is the source code for com.opengamma.financial.analytics.model.forex.AbstractForexSpotRateMarketDataFunction.java

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/**
 * 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;

import java.util.Set;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
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.ValueRequirement;
import com.opengamma.engine.value.ValueRequirementNames;
import com.opengamma.engine.value.ValueSpecification;
import com.opengamma.util.money.UnorderedCurrencyPair;

/**
 * 
 */
public abstract class AbstractForexSpotRateMarketDataFunction extends AbstractFunction.NonCompiledInvoker {

    private final ComputationTargetType _targetType = ComputationTargetType.PRIMITIVE;

    @Override
    public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs,
            final ComputationTarget target, final Set<ValueRequirement> desiredValues) {
        final ComputedValue inputValue = Iterables.getOnlyElement(inputs.getAllValues());
        final ValueSpecification outputSpec = new ValueSpecification(ValueRequirementNames.SPOT_RATE,
                target.toSpecification(), createValueProperties().get());
        return ImmutableSet.of(new ComputedValue(outputSpec, inputValue.getValue()));
    }

    @Override
    public ComputationTargetType getTargetType() {
        return _targetType;
    }

    @Override
    public boolean canApplyTo(final FunctionCompilationContext context, final ComputationTarget target) {
        if (target.getUniqueId() == null) {
            return false;
        }
        return target.getType() == _targetType
                && target.getUniqueId().getScheme().equals(UnorderedCurrencyPair.OBJECT_SCHEME);
    }

    @Override
    public Set<ValueSpecification> getResults(final FunctionCompilationContext context,
            final ComputationTarget target) {
        return ImmutableSet.of(new ValueSpecification(ValueRequirementNames.SPOT_RATE, target.toSpecification(),
                createValueProperties().get()));
    }

}