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 package org.apache.mina.api;
20
21 import org.apache.mina.filterchain.ReadFilterChainController;
22 import org.apache.mina.filterchain.WriteFilterChainController;
23 import org.apache.mina.session.WriteRequest;
24
25 /**
26 * A convenient {@link IoFilter} implementation to be sub-classed for easier IoFilter implementation.
27 *
28 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
29 */
30 public abstract class AbstractIoFilter implements IoFilter {
31
32 /**
33 * {@inheritDoc}
34 */
35 @Override
36 public void sessionOpened(final IoSession session) {
37 }
38
39 /**
40 * {@inheritDoc}
41 */
42 @Override
43 public void sessionClosed(final IoSession session) {
44 }
45
46 /**
47 * {@inheritDoc}
48 */
49 @Override
50 public void sessionIdle(final IoSession session, final IdleStatus status) {
51 }
52
53 /**
54 * {@inheritDoc}
55 */
56 @Override
57 public void messageReceived(final IoSession session, final Object message,
58 final ReadFilterChainController controller) {
59 controller.callReadNextFilter(message);
60 }
61
62 /**
63 * {@inheritDoc}
64 */
65 @Override
66 public void messageWriting(IoSession session, WriteRequest message, WriteFilterChainController controller) {
67 controller.callWriteNextFilter(message);
68 }
69
70 /**
71 * {@inheritDoc}
72 */
73 @Override
74 public void messageSent(final IoSession session, final Object message) {
75 }
76 }