Source Code Cross Referenced for JHandleDelegate.java in  » J2EE » JOnAS-4.8.6 » org » objectweb » jonas_ejb » container » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » JOnAS 4.8.6 » org.objectweb.jonas_ejb.container 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * JOnAS: Java(TM) Open Application Server
003:         * Copyright (C) 1999-2004 Bull S.A.
004:         * Contact: jonas-team@objectweb.org
005:         *
006:         * This library is free software; you can redistribute it and/or
007:         * modify it under the terms of the GNU Lesser General Public
008:         * License as published by the Free Software Foundation; either
009:         * version 2.1 of the License, or any later version.
010:         *
011:         * This library is distributed in the hope that it will be useful,
012:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014:         * Lesser General Public License for more details.
015:         *
016:         * You should have received a copy of the GNU Lesser General Public
017:         * License along with this library; if not, write to the Free Software
018:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
019:         * USA
020:         *
021:         * --------------------------------------------------------------------------
022:         * $Id: JHandleDelegate.java 6673 2005-04-28 16:53:00Z benoitf $
023:         * --------------------------------------------------------------------------
024:         */package org.objectweb.jonas_ejb.container;
025:
026:        import java.io.IOException;
027:        import java.io.ObjectInputStream;
028:        import java.io.ObjectOutputStream;
029:
030:        import javax.ejb.EJBHome;
031:        import javax.ejb.EJBObject;
032:        import javax.ejb.spi.HandleDelegate;
033:        import javax.rmi.PortableRemoteObject;
034:
035:        import org.objectweb.carol.rmi.util.RmiMultiUtility;
036:        import org.objectweb.util.monolog.api.BasicLevel;
037:
038:        /**
039:         * Implementation for HandleDelegate SPI.
040:         * @author durieuxp
041:         */
042:        public class JHandleDelegate implements  HandleDelegate {
043:
044:            // -----------------------------------------------------------------------
045:            // HandleDelegate implementation
046:            // ------------------------------------------------------------------------
047:
048:            /**
049:             * Serialize the EJBObject reference corresponding to a Handle. This method
050:             * is called from the writeObject method of portable Handle implementation
051:             * classes. The ostream object is the same object that was passed in to the
052:             * Handle class's writeObject.
053:             * @param ejb The EJBObject reference to be serialized.
054:             * @param out The output stream.
055:             * @throws IOException The EJBObject could not be serialized because of a
056:             *         system-level failure.
057:             */
058:            public void writeEJBObject(EJBObject ejb, ObjectOutputStream out)
059:                    throws IOException {
060:                if (TraceEjb.isDebugIc()) {
061:                    TraceEjb.interp.log(BasicLevel.DEBUG, "");
062:                }
063:                out.writeObject(ejb);
064:            }
065:
066:            /**
067:             * Deserialize the EJBObject reference corresponding to a Handle.
068:             * readEJBObject is called from the readObject method of portable Handle
069:             * implementation classes. The istream object is the same object that was
070:             * passed in to the Handle class's readObject. When readEJBObject is called,
071:             * istream must point to the location in the stream at which the EJBObject
072:             * reference can be read. The container must ensure that the EJBObject
073:             * reference is capable of performing invocations immediately after
074:             * deserialization.
075:             * @param in The input stream.
076:             * @return The deserialized EJBObject reference.
077:             * @throws IOException The EJBObject could not be deserialized because of a
078:             *         system-level failure.
079:             * @throws ClassNotFoundException The EJBObject could not be deserialized
080:             *         because some class could not be found.
081:             */
082:            public EJBObject readEJBObject(ObjectInputStream in)
083:                    throws IOException, ClassNotFoundException {
084:                if (TraceEjb.isDebugIc()) {
085:                    TraceEjb.interp.log(BasicLevel.DEBUG, "");
086:                }
087:                Object ejb = in.readObject();
088:                RmiMultiUtility.reconnectStub2Orb(ejb);
089:                return (EJBObject) PortableRemoteObject.narrow(ejb,
090:                        EJBObject.class);
091:            }
092:
093:            /**
094:             * Serialize the EJBHome reference corresponding to a HomeHandle. This
095:             * method is called from the writeObject method of portable HomeHandle
096:             * implementation classes. The ostream object is the same object that was
097:             * passed in to the Handle class's writeObject.
098:             * @param home The EJBHome reference to be serialized.
099:             * @param out The output stream.
100:             * @throws IOException The EJBObject could not be deserialized because of a
101:             *         system-level failure.
102:             */
103:            public void writeEJBHome(EJBHome home, ObjectOutputStream out)
104:                    throws IOException {
105:                if (TraceEjb.isDebugIc()) {
106:                    TraceEjb.interp.log(BasicLevel.DEBUG, "");
107:                }
108:                out.writeObject(home);
109:            }
110:
111:            /**
112:             * Deserialize the EJBHome reference corresponding to a HomeHandle.
113:             * readEJBHome is called from the readObject method of portable HomeHandle
114:             * implementation classes. The istream object is the same object that was
115:             * passed in to the HomeHandle class's readObject. When readEJBHome is
116:             * called, istream must point to the location in the stream at which the
117:             * EJBHome reference can be read. The container must ensure that the EJBHome
118:             * reference is capable of performing invocations immediately after
119:             * deserialization.
120:             * @param in The input stream.
121:             * @return The deserialized EJBHome reference.
122:             * @throws IOException The EJBHome could not be deserialized because of a
123:             *         system-level failure.
124:             * @throws ClassNotFoundException The EJBHome could not be deserialized
125:             *         because some class could not be found.
126:             */
127:            public EJBHome readEJBHome(ObjectInputStream in)
128:                    throws IOException, ClassNotFoundException {
129:                if (TraceEjb.isDebugIc()) {
130:                    TraceEjb.interp.log(BasicLevel.DEBUG, "");
131:                }
132:                Object home = in.readObject();
133:                RmiMultiUtility.reconnectStub2Orb(home);
134:                return (EJBHome) PortableRemoteObject.narrow(home,
135:                        EJBHome.class);
136:            }
137:        }
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