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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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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2013, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.ejb.client.remoting;

import org.jboss.ejb.client.EJBReceiverInvocationContext;
import org.jboss.ejb.client.XidTransactionID;
import org.jboss.marshalling.MarshallerFactory;
import org.jboss.marshalling.Unmarshaller;

import javax.transaction.xa.Xid;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * Responsible for handling the response returned back for a transaction recovery request
 *
 * @author Jaikiran Pai
 */
class TransactionRecoveryResponseHandler extends ProtocolMessageHandler {

    private final ChannelAssociation channelAssociation;
    private final MarshallerFactory marshallerFactory;

    TransactionRecoveryResponseHandler(final ChannelAssociation channelAssociation, final MarshallerFactory marshallerFactory) {
        this.channelAssociation = channelAssociation;
        this.marshallerFactory = marshallerFactory;
    }

    @Override
    protected void processMessage(final InputStream inputStream) throws IOException {
        // read the invocation id
        final DataInputStream dataInputStream = new DataInputStream(inputStream);
        try {
            final short invocationId = dataInputStream.readShort();
            final int numXidsToRecover = PackedInteger.readPackedInteger(dataInputStream);
            if (numXidsToRecover > 0) {
                // prepare the unmarshaller
                final Unmarshaller unmarshaller = this.prepareForUnMarshalling(marshallerFactory, dataInputStream);
                final Xid[] xidsToRecover = new Xid[numXidsToRecover];
                for (int i = 0; i < numXidsToRecover; i++) {
                    final XidTransactionID xidTransactionID = (XidTransactionID) unmarshaller.readObject();
                    xidsToRecover[i] = xidTransactionID.getXid();
                }
                // finish unmarshalling
                unmarshaller.finish();
                // let the waiting invocation know that the result is ready
                this.channelAssociation.resultReady(invocationId, new TxRecoveryResultProducer(xidsToRecover));
            } else {
                // let the waiting invocation know that the result is ready
                this.channelAssociation.resultReady(invocationId, new TxRecoveryResultProducer(new Xid[0]));
            }
        } catch (ClassNotFoundException e) {
            throw new IOException(e);
        } finally {
            dataInputStream.close();
        }
    }

    private class TxRecoveryResultProducer implements EJBReceiverInvocationContext.ResultProducer {

        private Xid[] xidsToRecover;

        TxRecoveryResultProducer(final Xid[] xidsToRecover) {
            this.xidsToRecover = xidsToRecover;
        }

        @Override
        public Object getResult() throws Exception {
            return this.xidsToRecover;
        }

        @Override
        public void discardResult() {
        }
    }
}