Glassfish example source code file (Remote30WrapperGenerator.java)

This example Glassfish source code file (Remote30WrapperGenerator.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

business, business, class, classloader, generatorexception, io, linkedlist, linkedlist, list, list, public, reflection, remote, remote30wrappergenerator, string, string, util

The Glassfish Remote30WrapperGenerator.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.codegen;

import java.lang.reflect.Method;
import java.io.*;
import java.util.*;


import static java.lang.reflect.Modifier.*;

import static com.sun.corba.ee.spi.orbutil.codegen.Wrapper.*;
import com.sun.corba.ee.spi.orbutil.codegen.Type;
import com.sun.corba.ee.spi.orbutil.codegen.Expression;

import com.sun.ejb.EJBUtils;
import com.sun.enterprise.util.LocalStringManagerImpl;

/**
 * 
 */

public class Remote30WrapperGenerator extends Generator 
    implements ClassGeneratorFactory {

    private static LocalStringManagerImpl localStrings =
	new LocalStringManagerImpl(WrapperGenerator.class);

    private String remoteInterfaceName;
    private Class businessInterface;
    private String remoteClientClassName;
    private String remoteClientPackageName;
    private String remoteClientSimpleName;
    private Method[] bizMethods;

    private ClassLoader loader;

    public String getGeneratedClass() {
        return remoteClientClassName;
    }
    
    // For corba codegen infrastructure
    public String className() {
        return getGeneratedClass();
    }

    /**
     * Construct the Wrapper generator with the specified deployment
     * descriptor and class loader.
     * @exception GeneratorException.
     */
    public Remote30WrapperGenerator
        (ClassLoader cl, String businessIntfName, String remoteIntfName)
	throws GeneratorException 
    {
	    super();

        remoteInterfaceName = remoteIntfName;

        loader = cl;

	    try {
	        this.businessInterface = cl.loadClass(businessIntfName);
	    } catch (ClassNotFoundException ex) {
	        throw new InvalidBean(
		    localStrings.getLocalString(
		    "generator.remote_interface_not_found",
		    "Business interface " + businessInterface + " not found "));
	    }

        if( javax.ejb.EJBObject.class.isAssignableFrom(businessInterface) ) {
            throw new GeneratorException("Invalid Remote Business Interface " +
                 businessInterface + ". A Remote Business interface MUST " +
                 "not extend javax.ejb.EJBObject.");
        }

        remoteClientClassName = EJBUtils.
            getGeneratedRemoteWrapperName(businessInterface.getName());

        remoteClientPackageName = getPackageName(remoteClientClassName);
        remoteClientSimpleName = getBaseName(remoteClientClassName);

	    bizMethods = removeDups(businessInterface.getMethods());

        // NOTE : no need to remove ejb object methods because EJBObject
        // is only visible through the RemoteHome view.

    }


    public void evaluate() {

        _clear();

        if (remoteClientPackageName != null) {
	    _package(remoteClientPackageName);
        } else {
            // no-arg _package() call is required for default package
            _package();
        }

        _class(PUBLIC, remoteClientSimpleName, 
               _t("com.sun.ejb.containers.RemoteBusinessWrapperBase"), 
               _t(businessInterface.getName()));
        
        _data(PRIVATE, _t(remoteInterfaceName), "delegate_");

        _constructor( PUBLIC ) ;
        _arg(_t(remoteInterfaceName), "stub");
        _arg(_String(), "busIntf");

        _body();
        _expr(_super(_s(_void(), _t("java.rmi.Remote"), _String()),
                     _v("stub"), _v("busIntf"))) ;
        _assign(_v("delegate_"), _v("stub"));
        _end();

        for(int i = 0; i < bizMethods.length; i++) {
	    printMethodImpl(bizMethods[i]);
	}

        _end();


        try {
            java.util.Properties p = new java.util.Properties();
            p.put("Wrapper.DUMP_AFTER_SETUP_VISITOR", "true");
            p.put("Wrapper.TRACE_BYTE_CODE_GENERATION", "true");
            p.put("Wrapper.USE_ASM_VERIFIER", "true");
            _byteCode(loader, p);
        } catch(Exception e) {
            System.out.println("Got exception when generating byte code");
            e.printStackTrace();
        }
       

        _classGenerator() ;

        return;

    }


    private void printMethodImpl(Method m)
    {

        List<Type> exceptionList = new LinkedList();
	for(Class exception : m.getExceptionTypes()) {
            exceptionList.add(Type.type(exception));
	}

        _method( PUBLIC, Type.type(m.getReturnType()),
                 m.getName(), exceptionList);

        int i = 0;
        List<Type> expressionListTypes = new LinkedList();
        List<Expression> expressionList = new LinkedList();
        for(Class param : m.getParameterTypes()) {
            String paramName = "param" + i;
            _arg(Type.type(param), paramName);
            i++;
            expressionListTypes.add(Type.type(param));
            expressionList.add(_v(paramName));
	}

        _body();


        _try();

        Class returnType = m.getReturnType();

        if( returnType == void.class ) {
            _expr( _call( _v("delegate_"), m.getName(), 
                          _s(Type.type(returnType), expressionListTypes), 
                          expressionList));
        } else {
            _return( _call( _v("delegate_"), m.getName(), 
                            _s(Type.type(returnType), expressionListTypes), 
                            expressionList) );
        }

        boolean doExceptionTranslation = 
            !java.rmi.Remote.class.isAssignableFrom(businessInterface);
        if( doExceptionTranslation ) {

            _catch( _t("javax.transaction.TransactionRolledbackException"),
                    "trex");

                _define( _t("java.lang.RuntimeException"), "r", 
                         _new( _t("javax.ejb.EJBTransactionRolledbackException"), 
                           _s(_void())));
                _expr( _call( _v("r"), "initCause",
                              _s(_t("java.lang.Throwable"), 
                                 _t("java.lang.Throwable")), 
                              _v("trex")));
                _throw(_v("r"));

            _catch( _t("javax.transaction.TransactionRequiredException"),
                    "treqex");

                _define( _t("java.lang.RuntimeException"), "r", 
                         _new( _t("javax.ejb.EJBTransactionRequiredException"), 
                           _s(_void())));
                _expr( _call( _v("r"), "initCause",
                              _s(_t("java.lang.Throwable"), 
                                 _t("java.lang.Throwable")), 
                              _v("treqex")));
                _throw(_v("r"));

            _catch( _t("java.rmi.NoSuchObjectException"),
                    "nsoe");

                _define( _t("java.lang.RuntimeException"), "r", 
                         _new( _t("javax.ejb.NoSuchEJBException"), 
                           _s(_void())));
                _expr( _call( _v("r"), "initCause",
                              _s(_t("java.lang.Throwable"), 
                                 _t("java.lang.Throwable")), 
                              _v("nsoe")));
                _throw(_v("r"));

            _catch( _t("java.rmi.AccessException"),
                    "accex");

                _define( _t("java.lang.RuntimeException"), "r",
                         _new( _t("javax.ejb.EJBAccessException"),
                           _s(_void())));
                _expr( _call( _v("r"), "initCause",
                              _s(_t("java.lang.Throwable"),
                                 _t("java.lang.Throwable")),
                              _v("accex")));
                _throw(_v("r"));

            _catch(_t("com.sun.ejb.containers.InternalEJBContainerException"),
                   "iejbcEx");

                // This wraps an EJBException. Pull out the cause and throw
                // it as is.  
                //_define( _t("java.lang.Throwable"), "r", _null());

                         
                // _throw(_cast(_t("javax.ejb.EJBException"), _v("r")));
                _throw(_cast(_t("javax.ejb.EJBException"),
                            _call( _v("iejbcEx"), "getCause",
                              _s(_t("java.lang.Throwable")))));


            _catch( _t("java.rmi.RemoteException"), "re");
            
                _throw( _new( _t("javax.ejb.EJBException"), 
                              _s(_void(), _t("java.lang.Exception")), 
                              _v("re")));
            
            _catch( _t("org.omg.CORBA.SystemException"), "corbaSysEx");
                _define( _t("java.lang.RuntimeException"), "r", 
                         _new( _t("javax.ejb.EJBException"), 
                           _s(_void())));
                _expr( _call( _v("r"), "initCause",
                              _s(_t("java.lang.Throwable"), 
                                 _t("java.lang.Throwable")), 
                              _v("corbaSysEx")));
                _throw(_v("r"));

            _end();

        } else {
            _catch(_t("com.sun.ejb.containers.InternalEJBContainerException"), "iejbcEx");
                _throw( _new( _t("com.sun.ejb.containers.InternalRemoteException"), 
                              _s(_void(), _t("com.sun.ejb.containers.InternalEJBContainerException")), 
                              _v("iejbcEx")));
            _end();
        }

        _end();
    }

}