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1   /*
2    *   @(#) $Id: AddMessageEncoder.java 332218 2005-11-10 03:52:42Z trustin $
3    *
4    *   Copyright 2004 The Apache Software Foundation
5    *
6    *   Licensed under the Apache License, Version 2.0 (the "License");
7    *   you may not use this file except in compliance with the License.
8    *   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, software
13   *   distributed under the License is distributed on an "AS IS" BASIS,
14   *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   *   See the License for the specific language governing permissions and
16   *   limitations under the License.
17   *
18   */
19  package org.apache.mina.examples.sumup.codec;
20  
21  import java.util.Collections;
22  import java.util.HashSet;
23  import java.util.Set;
24  
25  import org.apache.mina.common.ByteBuffer;
26  import org.apache.mina.examples.sumup.message.AbstractMessage;
27  import org.apache.mina.examples.sumup.message.AddMessage;
28  import org.apache.mina.protocol.ProtocolSession;
29  import org.apache.mina.protocol.codec.MessageEncoder;
30  
31  /***
32   * A {@link MessageEncoder} that encodes {@link AddMessage}.
33   *
34   * @author The Apache Directory Project
35   * @version $Rev: 332218 $, $Date: 2005-11-10 12:52:42 +0900 $
36   */
37  public class AddMessageEncoder extends AbstractMessageEncoder
38  {
39      private static final Set TYPES;
40     
41      static
42      {
43          Set types = new HashSet();
44          types.add( AddMessage.class );
45          TYPES = Collections.unmodifiableSet( types );
46      }
47  
48      public AddMessageEncoder()
49      {
50          super( Constants.ADD );
51      }
52  
53      protected void encodeBody( ProtocolSession session, AbstractMessage message, ByteBuffer out )
54      {
55          AddMessage m = ( AddMessage ) message;
56          out.putInt( m.getValue() );
57      }
58  
59      public Set getMessageTypes()
60      {
61          return TYPES;
62      }
63  }