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.filter.codec.netty;
21
22 import net.gleamynode.netty2.Message;
23
24 import org.apache.mina.core.buffer.IoBuffer;
25 import org.apache.mina.core.session.IoSession;
26 import org.apache.mina.filter.codec.ProtocolEncoder;
27 import org.apache.mina.filter.codec.ProtocolEncoderException;
28 import org.apache.mina.filter.codec.ProtocolEncoderOutput;
29
30 /**
31 * A MINA <tt>ProtocolEncoder</tt> that encodes Netty2 {@link Message}s
32 * into buffers.
33 *
34 * @author The Apache MINA Project (dev@mina.apache.org)
35 * @version $Rev: 671827 $, $Date: 2008-06-26 10:49:48 +0200 (jeu, 26 jun 2008) $,
36 */
37 public class NettyEncoder implements ProtocolEncoder {
38 /**
39 * Creates a new instance.
40 */
41 public NettyEncoder() {
42 }
43
44 public void encode(IoSession session, Object message,
45 ProtocolEncoderOutput out) throws Exception {
46 if (!(message instanceof Message)) {
47 throw new ProtocolEncoderException(
48 "This encoder can decode only Netty Messages.");
49 }
50
51 for (;;) {
52 IoBuffer buf = IoBuffer.allocate(8192);
53 Message m = (Message) message;
54 try {
55 if (m.write(buf.buf())) {
56 break;
57 }
58 } finally {
59 buf.flip();
60 if (buf.hasRemaining()) {
61 out.write(buf);
62 }
63 }
64 }
65 }
66
67 public void dispose(IoSession session) throws Exception {
68 }
69 }