com.opengamma.engine.marketdata.manipulator.NoOpMarketDataSelector.java Source code

Introduction

Here is the source code for com.opengamma.engine.marketdata.manipulator.NoOpMarketDataSelector.java

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/**
 * Copyright (C) 2013 - present by OpenGamma Inc. and the OpenGamma group of companies
 *
 * Please see distribution for license.
 */
package com.opengamma.engine.marketdata.manipulator;

import java.util.Set;

import org.fudgemsg.FudgeMsg;
import org.fudgemsg.MutableFudgeMsg;
import org.fudgemsg.mapping.FudgeDeserializer;
import org.fudgemsg.mapping.FudgeSerializer;

import com.google.common.collect.ImmutableSet;

/**
 * A market data selector which never performs an extraction operation.
 */
public final class NoOpMarketDataSelector implements MarketDataSelector {

    private static final NoOpMarketDataSelector INSTANCE = new NoOpMarketDataSelector();

    private NoOpMarketDataSelector() {
    }

    /**
     * Return the singleton instance.
     *
     * @return the singleton instance
     */
    public static NoOpMarketDataSelector getInstance() {
        return INSTANCE;
    }

    @Override
    public DistinctMarketDataSelector findMatchingSelector(StructureIdentifier<?> structureId,
            String calculationConfigurationName, SelectorResolver resolver) {
        return null;
    }

    @Override
    public Set<StructureType> getApplicableStructureTypes() {
        return ImmutableSet.of();
    }

    @Override
    public boolean hasSelectionsDefined() {
        return false;
    }

    public MutableFudgeMsg toFudgeMsg(final FudgeSerializer serializer) {
        return serializer.newMessage();
    }

    public static NoOpMarketDataSelector fromFudgeMsg(final FudgeDeserializer deserializer, final FudgeMsg msg) {
        return INSTANCE;
    }
}