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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 2011, 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 java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;

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

/**
 * @author Jaikiran Pai
 */
class InvocationExceptionResponseHandler extends ProtocolMessageHandler {

    private final MarshallerFactory marshallerFactory;

    private final ChannelAssociation channelAssociation;

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


    @Override
    protected void processMessage(InputStream inputStream) throws IOException {
        if (inputStream == null) {
            throw new IllegalArgumentException("Cannot read from null stream");
        }
        final DataInputStream input = new DataInputStream(inputStream);
        // read the invocation id
        final short invocationId = input.readShort();
        // create a ResultProducer which can unmarshall and return the result, later
        final EJBReceiverInvocationContext.ResultProducer resultProducer = new MethodInvocationExceptionResultProducer(input);
        // make it known that the result is available
        this.channelAssociation.resultReady(invocationId, resultProducer);
    }

    /**
     * A result producer which parses a input stream and returns a method invocation response as a result
     */
    private class MethodInvocationExceptionResultProducer implements EJBReceiverInvocationContext.ResultProducer {

        private final DataInputStream input;

        MethodInvocationExceptionResultProducer(final DataInputStream input) {
            this.input = input;
        }

        @Override
        public Object getResult() throws Exception {
            try {
                // prepare the unmarshaller
                final Unmarshaller unmarshaller = InvocationExceptionResponseHandler.this.prepareForUnMarshalling(InvocationExceptionResponseHandler.this.marshallerFactory, this.input);
                Object result = unmarshaller.readObject();

                // read the attachments
                final Map attachments = InvocationExceptionResponseHandler.this.readAttachments(unmarshaller);

                // finish unmarshalling
                unmarshaller.finish();

                // should never happen if the server implemented the protocol correctly
                // but let's just check - instead of running into a ClassCastException, we can provide a more
                // meaningful error message
                if (result instanceof Throwable == false) {
                    throw new RuntimeException("Method invocation failure message contained a payload: " + result + " which is *not* of type " + Throwable.class.getName());
                }
                final Throwable t = (Throwable) result;
                if (t instanceof Exception) {
                    // glue the client side exception with the server side
                    InvocationExceptionResponseHandler.this.glueStackTraces(t, Thread.currentThread().getStackTrace(), 1, "asynchronous invocation");
                    throw (Exception) t;
                } else {
                    throw new RuntimeException(t);
                }
            } finally {
                this.input.close();
            }
        }

        @Override
        public void discardResult() {
        }
    }
}