com.opengamma.engine.marketdata.live.MarketDataAvailabilityNotification.java Source code

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Here is the source code for com.opengamma.engine.marketdata.live.MarketDataAvailabilityNotification.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.live;

import java.util.Set;

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

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;
import com.opengamma.id.ExternalScheme;
import com.opengamma.util.ArgumentChecker;

/**
 * Notification that a market data provider has become available.
 */
public class MarketDataAvailabilityNotification {

    /** Field name for Fudge message. */
    private static final String SCHEMES = "schemes";

    /** Schemes handled by the provider. */
    private final Set<ExternalScheme> _schemes;

    /**
     * @param schemes Schemes handled by the provider.
     */
    public MarketDataAvailabilityNotification(Set<ExternalScheme> schemes) {
        ArgumentChecker.notEmpty(schemes, "schemes");
        _schemes = ImmutableSet.copyOf(schemes);
    }

    /**
     * @return The schemes handled by the market data provider that has become available.
     */
    public Set<ExternalScheme> getSchemes() {
        return _schemes;
    }

    public MutableFudgeMsg toFudgeMsg(final FudgeSerializer serializer) {
        MutableFudgeMsg msg = serializer.newMessage();
        MutableFudgeMsg schemesMsg = serializer.newMessage();
        for (ExternalScheme scheme : _schemes) {
            serializer.addToMessage(schemesMsg, null, null, scheme.getName());
        }
        serializer.addToMessage(msg, SCHEMES, null, schemesMsg);
        return msg;
    }

    public static MarketDataAvailabilityNotification fromFudgeMsg(final FudgeDeserializer deserializer,
            final FudgeMsg msg) {
        FudgeMsg schemesMsg = msg.getMessage(SCHEMES);
        Set<ExternalScheme> schemes = Sets.newHashSet();
        for (FudgeField field : schemesMsg) {
            String schemeName = deserializer.fieldValueToObject(String.class, field);
            schemes.add(ExternalScheme.of(schemeName));
        }
        return new MarketDataAvailabilityNotification(schemes);
    }

    @Override
    public String toString() {
        return "MarketDataAvailabilityNotification [_schemes=" + _schemes + "]";
    }
}