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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2011 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]"
 *
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 * 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 com.sun.ejb.EJBUtils;

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

import static org.glassfish.pfl.dynamic.codegen.spi.Wrapper.*;
import org.glassfish.pfl.dynamic.codegen.spi.Type ;

import com.sun.enterprise.util.LocalStringManagerImpl;

/**
 * This class is used to generate the RMI-IIOP version of a 
 * remote business interface.
 */

public class RemoteGenerator extends Generator 
    implements ClassGeneratorFactory {

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


    private Class businessInterface;
    private Method[] bizMethods;
    private String remoteInterfacePackageName;
    private String remoteInterfaceSimpleName;
    private String remoteInterfaceName;

    /**
     * Get the fully qualified name of the generated class.
     * Note: the remote/local implementation class is in the same package 
     * as the bean class, NOT the remote/local interface.
     * @return the name of the generated class.
     */
    public String getGeneratedClass() {
        return remoteInterfaceName;
    }

    // For corba codegen infrastructure
    public String className() {
        return getGeneratedClass();
    }
    
    /**
     * Construct the Wrapper generator with the specified deployment
     * descriptor and class loader.
     * @exception GeneratorException.
     */
    public RemoteGenerator(ClassLoader cl, String businessIntf) 
	throws GeneratorException 
    {
	super();

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

        remoteInterfaceName = EJBUtils.getGeneratedRemoteIntfName
            (businessInterface.getName());

	    remoteInterfacePackageName = getPackageName(remoteInterfaceName);
        remoteInterfaceSimpleName = getBaseName(remoteInterfaceName);
	
	    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 (remoteInterfacePackageName != null) {
	        _package(remoteInterfacePackageName);
        } else {
            // no-arg _package() call is required for default package
            _package();
        } 

        _interface(PUBLIC, remoteInterfaceSimpleName,
                   _t("java.rmi.Remote"), 
                   _t("com.sun.ejb.containers.RemoteBusinessObject"));

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

        _end();

        _classGenerator() ;

        return;

    }


    private void printMethod(Method m)
    {

        boolean throwsRemoteException = false;
        List exceptionList = new LinkedList();
	    for(Class exception : m.getExceptionTypes()) {
            exceptionList.add(Type.type(exception));
            if( exception.getName().equals("java.rmi.RemoteException") ) {
                throwsRemoteException = true;
            }
	}
        if( !throwsRemoteException ) {
            exceptionList.add(_t("java.rmi.RemoteException"));
        }

        exceptionList.add(_t("com.sun.ejb.containers.InternalEJBContainerException"));
        _method( PUBLIC | ABSTRACT, Type.type(m.getReturnType()),
                 m.getName(), exceptionList);

        int i = 0;
        for(Class param : m.getParameterTypes()) {
            _arg(Type.type(param), "param" + i);
            i++;
	}

        _end();
    }


}




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