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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.blocks.mux;

import org.jgroups.*;
import org.jgroups.blocks.*;
import org.jgroups.stack.Protocol;
import org.jgroups.util.FutureListener;
import org.jgroups.util.RspList;

import java.util.Collection;

/**
 * A multiplexed message dispatcher.
 * When used in conjunction with a MuxUpHandler, allows multiple dispatchers to use the same channel.
 * 

 * Usage:

 * 
 * Channel c = new JChannel(...);

 * c.setUpHandler(new MuxUpHandler());

 * 

 * MessageDispatcher d1 = new MuxMessageDispatcher((short) 1, c, ...);

 * MessageDispatcher d2 = new MuxMessageDispatcher((short) 2, c, ...);

 * 

 * c.connect(...);

 * 
 * @author Paul Ferraro
 */
public class MuxMessageDispatcher extends MessageDispatcher {

    private final short scope_id;
    
    public MuxMessageDispatcher(short scopeId) {
        this.scope_id = scopeId;
    }

    public MuxMessageDispatcher(short scopeId, Channel channel, MessageListener messageListener, MembershipListener membershipListener, RequestHandler handler) {
        this(scopeId);
        
        setMessageListener(messageListener);
        setMembershipListener(membershipListener);
        setChannel(channel);
        setRequestHandler(handler);
        start();
    }

    private Muxer getMuxer() {
        UpHandler handler = channel.getUpHandler();
        return ((handler != null) && (handler instanceof MuxUpHandler)) ? (MuxUpHandler) handler : null;
    }

    @Override
    protected RequestCorrelator createRequestCorrelator(Protocol transport, RequestHandler handler, Address localAddr) {
        // We can't set the scope of the request correlator here since this method is called from start()
        // triggered in the MessageDispatcher constructor, when this.scope is not yet defined
        return new MuxRequestCorrelator(scope_id, transport, handler, localAddr);
    }

    @Override
    public void start() {
        super.start();
        Muxer muxer = this.getMuxer();
        if (muxer != null) {
            muxer.add(scope_id, this.getProtocolAdapter());
        }
   }

    @Override
    public void stop() {
        Muxer muxer = this.getMuxer();
        if (muxer != null) {
            muxer.remove(scope_id);
        }
        super.stop();
    }

    @Override
    protected  GroupRequest cast(Collection dests, Message msg, RequestOptions options,
                                       boolean blockForResults, FutureListener> listener) throws Exception {
        RspFilter filter = options.getRspFilter();
        return super.cast(dests, msg, options.setRspFilter(NoMuxHandlerRspFilter.createInstance(filter)), blockForResults, listener);
    }
}