1 /*
2 * Copyright 2009 Red Hat, Inc.
3 *
4 * Red Hat licenses this file to you under the Apache License, version 2.0
5 * (the "License"); you may not use this file except in compliance with the
6 * License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.handler.codec.serialization;
17
18 import java.io.IOException;
19 import java.io.ObjectOutputStream;
20 import java.io.ObjectStreamClass;
21 import java.io.OutputStream;
22
23 /**
24 * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
25 * @author <a href="http://gleamynode.net/">Trustin Lee</a>
26 *
27 * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
28 *
29 */
30 class CompactObjectOutputStream extends ObjectOutputStream {
31
32 static final int TYPE_FAT_DESCRIPTOR = 0;
33 static final int TYPE_THIN_DESCRIPTOR = 1;
34
35 CompactObjectOutputStream(OutputStream out) throws IOException {
36 super(out);
37 }
38
39 @Override
40 protected void writeStreamHeader() throws IOException {
41 writeByte(STREAM_VERSION);
42 }
43
44 @Override
45 protected void writeClassDescriptor(ObjectStreamClass desc) throws IOException {
46 Class<?> clazz = desc.forClass();
47 if (clazz.isPrimitive() || clazz.isArray()) {
48 write(TYPE_FAT_DESCRIPTOR);
49 super.writeClassDescriptor(desc);
50 } else {
51 write(TYPE_THIN_DESCRIPTOR);
52 writeUTF(desc.getName());
53 }
54 }
55 }