alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Glassfish example source code file (EJBLocalObjectInvocationHandlerDelegate.java)

This example Glassfish source code file (EJBLocalObjectInvocationHandlerDelegate.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Glassfish tags/keywords

basecontainer, class, ejblocalobjectinvocationhandler, ejblocalobjectinvocationhandler, ejblocalobjectinvocationhandlerdelegate, ejblocalobjectinvocationhandlerdelegate, io, object, object, reflection, serializablelocalobjectdelegate, serializablelocalobjectdelegate, serializableobjectfactory, sfsbs, string, used

The Glassfish EJBLocalObjectInvocationHandlerDelegate.java source code

/*
 * 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;

import com.sun.ejb.spi.io.IndirectlySerializable;
import com.sun.ejb.spi.io.SerializableObjectFactory;

/**
 * This class is used as a "proxy" or adapter between the business interface
 *  proxy and the EJBLocalObjectInvocationHandler. An instance of this class
 *  is created for each business interface of a bean. All java.lang.Object
 *  methods and mthods of IndirectlySerializable are handled by this 
 *  InvocationHandler itself while the business interface methods are delegated
 *  to the delegate (which is the EJBLocalObjectInvocaionHandler). 
 *   
 * @author Mahesh Kannan
 *
 */
public class EJBLocalObjectInvocationHandlerDelegate
    implements InvocationHandler {

    private Class intfClass;
    private long containerId;
    private EJBLocalObjectInvocationHandler delegate;
    private boolean isOptionalLocalBusinessView;
    
    EJBLocalObjectInvocationHandlerDelegate(Class intfClass, long containerId,
            EJBLocalObjectInvocationHandler delegate) {
        this.intfClass = intfClass;
        this.containerId = containerId;
        this.delegate = delegate;
        this.isOptionalLocalBusinessView = delegate.isOptionalLocalBusinessView();
    }
    
    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 if( methodClass == IndirectlySerializable.class ) {
            result = this.getSerializableObjectFactory();
        }else {
            result = delegate.invoke(intfClass, method, args);
        }
        
        return result;
    }

    EJBLocalObjectInvocationHandler getDelegate() {
        return delegate;
    }
    
    public int hashCode() {
        return (int) containerId;
    }
    
    public boolean equals(Object other) {
        boolean result = false;
        
        if ((other != null)
        && (other instanceof EJBLocalObjectInvocationHandlerDelegate)) {
            EJBLocalObjectInvocationHandlerDelegate otherDelegate
                    = (EJBLocalObjectInvocationHandlerDelegate) other;
            if ((containerId == otherDelegate.containerId)
            && (intfClass == otherDelegate.intfClass)) {
                EJBLocalObjectInvocationHandler otherHandler
                    = otherDelegate.delegate;
                result = (delegate.getKey() != null)
                    ? delegate.getKey().equals(otherHandler.getKey())
                    : (otherHandler.getKey() == null);
            }
        }
        
        return result;
    }

    public String toString() {
        return intfClass.getName() + "_" + System.identityHashCode(this);
    }
    
    public SerializableObjectFactory getSerializableObjectFactory() {
        // Note: for stateful SessionBeans, the EJBLocalObjectImpl contains
        // a pointer to the EJBContext. We should not serialize it here.
        
        return new SerializableLocalObjectDelegate(
            containerId, intfClass.getName(), delegate.getKey(),
            isOptionalLocalBusinessView,
            delegate.getSfsbClientVersion());
    }
    
    private static final class SerializableLocalObjectDelegate
        implements SerializableObjectFactory
    {
        private long containerId;
        private String intfClassName;
        private Object primaryKey;
        private boolean isOptionalLocalBusinessView;
        private long version = 0L; //Used only for SFSBs
        
        SerializableLocalObjectDelegate(long containerId, 
                String intfClassName, Object primaryKey, boolean isOptionalLocalBusView, long version) {
            this.containerId = containerId;
            this.intfClassName = intfClassName;
            this.primaryKey = primaryKey;
            this.isOptionalLocalBusinessView = isOptionalLocalBusView;
            this.version = version;
        }
        
        public Object createObject()
            throws IOException
        {
            BaseContainer container = EjbContainerUtilImpl.getInstance().getContainer(containerId);
            EJBLocalObjectImpl ejbLocalBusinessObjectImpl = isOptionalLocalBusinessView ?
                container.getOptionalEJBLocalBusinessObjectImpl(primaryKey) :
                container.getEJBLocalBusinessObjectImpl(primaryKey);
            ejbLocalBusinessObjectImpl.setSfsbClientVersion(version);
            // Return the client EJBLocalObject.

            return isOptionalLocalBusinessView ?
                ejbLocalBusinessObjectImpl.getOptionalLocalBusinessClientObject() :
                ejbLocalBusinessObjectImpl.getClientObject(intfClassName);
        }
    }
}

Other Glassfish examples (source code examples)

Here is a short list of links related to this Glassfish EJBLocalObjectInvocationHandlerDelegate.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.