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.common;
21
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
24
25
26 /**
27 * An abstract adapter class for {@link IoHandler}. You can extend this
28 * class and selectively override required event handler methods only. All
29 * methods do nothing by default.
30 *
31 * @author The Apache MINA Project (dev@mina.apache.org)
32 * @version $Rev: 616100 $, $Date: 2008-01-29 07:58:32 +0900 (화, 29 1월 2008) $
33 */
34 public class IoHandlerAdapter implements IoHandler {
35
36 private final Logger logger = LoggerFactory.getLogger(getClass());
37
38 public void sessionCreated(IoSession session) throws Exception {
39 }
40
41 public void sessionOpened(IoSession session) throws Exception {
42 }
43
44 public void sessionClosed(IoSession session) throws Exception {
45 }
46
47 public void sessionIdle(IoSession session, IdleStatus status)
48 throws Exception {
49 }
50
51 public void exceptionCaught(IoSession session, Throwable cause)
52 throws Exception {
53 if (logger.isWarnEnabled()) {
54 logger.warn("EXCEPTION, please implement "
55 + getClass().getName()
56 + ".exceptionCaught() for proper handling:", cause);
57 }
58 }
59
60 public void messageReceived(IoSession session, Object message)
61 throws Exception {
62 }
63
64 public void messageSent(IoSession session, Object message) throws Exception {
65 }
66 }