1 /***
2 *
3 * Copyright 2004 Protique Ltd
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 **/
18
19 package org.codehaus.activemq.message;
20
21 import org.codehaus.activemq.util.JMSExceptionHelper;
22
23 import javax.jms.JMSException;
24 import java.io.Externalizable;
25 import java.io.IOException;
26 import java.io.ObjectInput;
27 import java.io.ObjectOutput;
28
29 /***
30 * A helper class for using Packet instances with object serialization
31 *
32 * @version $Revision: 1.4 $
33 */
34 public class PacketFacade implements Externalizable {
35
36 private static final WireFormat wireFormat = new DefaultWireFormat();
37
38 private transient Packet packet;
39
40 public PacketFacade() {
41 }
42
43 public PacketFacade(Packet packet) {
44 this.packet = packet;
45 }
46
47 public Packet getPacket() {
48 return packet;
49 }
50
51 public void writeExternal(ObjectOutput out) throws IOException {
52 try {
53 wireFormat.writePacket(packet, out);
54 }
55 catch (JMSException e) {
56 throw JMSExceptionHelper.newIOException(e);
57 }
58 }
59
60 public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
61 int type = in.readByte();
62 packet = wireFormat.readPacket(type, in);
63 }
64 }