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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;
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38 public class ResultMessageEncoder extends AbstractMessageEncoder {
39 private static final Set TYPES;
40
41 static {
42 Set types = new HashSet();
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 getMessageTypes() {
63 return TYPES;
64 }
65
66 public void dispose() throws Exception {
67 }
68
69 }