com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project
There is a newer version: 7.2024.1.Alpha1
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.ejb.containers;

import java.io.IOException;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;

/**
 * This class is used as a "proxy" or adapter between the remote business 
 * interface proxy and the EJBObjectInvocationHandler. An instance of this 
 * class is created for each remote business interface of a bean. All 
 * java.lang.Object methods are handled by this InvocationHandler itself 
 * while the business interface methods are delegated to the delegate 
 * (which is the EJBObjectInvocaionHandler). 
 *   
 * @author Kenneth Saks
 *
 */
public class EJBObjectInvocationHandlerDelegate
    implements InvocationHandler {

    private Class remoteBusinessIntfClass;
    private EJBObjectInvocationHandler delegate;
    
    EJBObjectInvocationHandlerDelegate(Class intfClass, 
                                       EJBObjectInvocationHandler delegate) {
        this.remoteBusinessIntfClass = intfClass;
        this.delegate = delegate;
    }
    
    public Object invoke(Object proxy, Method method, Object[] args) 
        throws Throwable {
        
        Class methodClass = method.getDeclaringClass();
        Object result = null;
        if( methodClass == java.lang.Object.class ) {
            result = InvocationHandlerUtil.invokeJavaObjectMethod
                (this, method, args);
        } else {
            result = delegate.invoke(remoteBusinessIntfClass, method, args);
        }
        
        return result;
    }
    
    

}