1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.example.sumup.codec;
21
22 import java.util.Collections;
23 import java.util.HashSet;
24 import java.util.Set;
25
26 import org.apache.mina.common.ByteBuffer;
27 import org.apache.mina.common.IoSession;
28 import org.apache.mina.example.sumup.message.AbstractMessage;
29 import org.apache.mina.example.sumup.message.ResultMessage;
30 import org.apache.mina.filter.codec.demux.MessageEncoder;
31
32 /**
33 * A {@link MessageEncoder} that encodes {@link ResultMessage}.
34 *
35 * @author The Apache Directory Project (mina-dev@directory.apache.org)
36 * @version $Rev: 555855 $, $Date: 2007-07-13 12:19:00 +0900 (Fri, 13 Jul 2007) $
37 */
38 public class ResultMessageEncoder extends AbstractMessageEncoder {
39 private static final Set<Class<?>> TYPES;
40
41 static {
42 Set<Class<?>> types = new HashSet<Class<?>>();
43 types.add(ResultMessage.class);
44 TYPES = Collections.unmodifiableSet(types);
45 }
46
47 public ResultMessageEncoder() {
48 super(Constants.RESULT);
49 }
50
51 protected void encodeBody(IoSession session, AbstractMessage message,
52 ByteBuffer out) {
53 ResultMessage m = (ResultMessage) message;
54 if (m.isOk()) {
55 out.putShort((short) Constants.RESULT_OK);
56 out.putInt(m.getValue());
57 } else {
58 out.putShort((short) Constants.RESULT_ERROR);
59 }
60 }
61
62 public Set<Class<?>> getMessageTypes() {
63 return TYPES;
64 }
65
66 public void dispose() throws Exception {
67 }
68
69 }