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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;

/**
 * An EJB client interceptor, possibly protocol-specific.  Client interceptors should not store any state locally since
 * they are shared between all threads.
 *
 * @author David M. Lloyd
 */
public interface EJBClientInterceptor {

    /**
     * Handle the invocation.  Implementations may short-circuit the invocation by throwing an exception.  This method
     * should process any per-interceptor state and return.
     *
     * @param context the invocation context
     * @throws Exception if an invocation error occurs
     */
    void handleInvocation(EJBClientInvocationContext context) throws Exception;

    /**
     * Handle the invocation result.  The implementation should generally call {@link EJBClientInvocationContext#getResult()}
     * immediately and perform any post-invocation cleanup task in a finally block.
     *
     * @param context the invocation context
     * @return the invocation result, if any
     * @throws Exception if an invocation error occurred
     */
    Object handleInvocationResult(EJBClientInvocationContext context) throws Exception;

    /**
     * An interceptor registration handle.
     */
    class Registration implements Comparable {
        private final EJBClientContext clientContext;
        private final EJBClientInterceptor interceptor;
        private final int priority;

        Registration(final EJBClientContext clientContext, final EJBClientInterceptor interceptor, final int priority) {
            this.clientContext = clientContext;
            this.interceptor = interceptor;
            this.priority = priority;
        }

        /**
         * Remove this registration.
         */
        public void remove() {
            clientContext.removeInterceptor(this);
        }

        EJBClientInterceptor getInterceptor() {
            return interceptor;
        }

        public int compareTo(final Registration o) {
            return Integer.signum(priority - o.priority);
        }
    }
}