001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.corba;
018
019 import java.io.IOException;
020 import java.io.ObjectOutputStream;
021 import java.io.Serializable;
022 import java.rmi.RemoteException;
023 import javax.ejb.EJBHome;
024 import javax.ejb.HomeHandle;
025 import javax.ejb.spi.HandleDelegate;
026 import javax.naming.Context;
027 import javax.naming.InitialContext;
028 import javax.rmi.PortableRemoteObject;
029
030 import org.omg.CORBA.ORB;
031
032
033 /**
034 * EJB v2.1 spec, section 19.5.5.1
035 * <p/>
036 * The <code>javax.ejb.spi.HandleDelegate</code> service provider interface
037 * defines methods that enable portable implementations of <code>Handle</code>
038 * and <code>HomeHandle</code> that are instantiated in a different vendor’s
039 * container to serialize and deserialize EJBObject and EJBHome references.
040 * The <code>HandleDelegate</code> interface is not used by enterprise beans
041 * or J2EE application components directly.
042 *
043 * @version $Revision: 474745 $ $Date: 2006-11-14 03:30:38 -0800 (Tue, 14 Nov 2006) $
044 */
045 public class CORBAHomeHandle implements HomeHandle, Serializable {
046
047 private static final long serialVersionUID = -5537884768260058215L;
048
049 private String ior;
050
051 public CORBAHomeHandle(String ior) {
052 this.ior = ior;
053 }
054
055 public EJBHome getEJBHome() throws RemoteException {
056
057 try {
058 return (EJBHome) PortableRemoteObject.narrow(getOrb().string_to_object(ior), EJBHome.class);
059 } catch (Exception e) {
060 throw new RemoteException("Unable to convert IOR into home", e);
061 }
062
063 }
064
065 private void writeObject(ObjectOutputStream out) throws IOException {
066 HandleDelegate handleDelegate = getHandleDelegate();
067 handleDelegate.writeEJBHome(getEJBHome(), out);
068 }
069
070 private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException {
071 HandleDelegate handleDelegate = getHandleDelegate();
072 EJBHome home = handleDelegate.readEJBHome(in);
073
074 try {
075 ior = getOrb().object_to_string((org.omg.CORBA.Object) home);
076 } catch (Exception e) {
077 throw new RemoteException("Unable to convert object to IOR", e);
078 }
079 }
080
081 private static ORB getOrb() {
082 try {
083 Context context = new InitialContext();
084 ORB orb = (ORB) context.lookup("java:comp/ORB");
085 return orb;
086 } catch (Throwable e) {
087 throw (org.omg.CORBA.MARSHAL)new org.omg.CORBA.MARSHAL("Could not find ORB in jndi at java:comp/ORB", 0, org.omg.CORBA.CompletionStatus.COMPLETED_YES).initCause(e);
088 }
089 }
090
091 private static HandleDelegate getHandleDelegate() {
092 try {
093 Context context = new InitialContext();
094 HandleDelegate handleDelegate = (HandleDelegate) context.lookup("java:comp/HandleDelegate");
095 return handleDelegate;
096 } catch (Throwable e) {
097 throw (org.omg.CORBA.MARSHAL)new org.omg.CORBA.MARSHAL("Could not find handle delegate in jndi at java:comp/HandleDelegate", 0, org.omg.CORBA.CompletionStatus.COMPLETED_YES).initCause(e);
098 }
099 }
100 }