1 /*
2 * Copyright 2009 Red Hat, Inc.
3 *
4 * Red Hat licenses this file to you under the Apache License, version 2.0
5 * (the "License"); you may not use this file except in compliance with the
6 * License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.channel;
17
18 import java.net.SocketAddress;
19
20 /**
21 * A skeletal server-side {@link Channel} implementation. A server-side
22 * {@link Channel} does not allow the following operations:
23 * <ul>
24 * <li>{@link #connect(SocketAddress)}</li>
25 * <li>{@link #disconnect()}</li>
26 * <li>{@link #getInterestOps()}</li>
27 * <li>{@link #setInterestOps(int)}</li>
28 * <li>{@link #write(Object)}</li>
29 * <li>{@link #write(Object, SocketAddress)}</li>
30 * <li>and the shortcut methods which calls the methods mentioned above
31 * </ul>
32 *
33 * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
34 * @author <a href="http://gleamynode.net/">Trustin Lee</a>
35 *
36 * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
37 *
38 */
39 public abstract class AbstractServerChannel extends AbstractChannel implements ServerChannel {
40
41 /**
42 * Creates a new instance.
43 *
44 * @param factory
45 * the factory which created this channel
46 * @param pipeline
47 * the pipeline which is going to be attached to this channel
48 * @param sink
49 * the sink which will receive downstream events from the pipeline
50 * and send upstream events to the pipeline
51 */
52 protected AbstractServerChannel(
53 ChannelFactory factory,
54 ChannelPipeline pipeline,
55 ChannelSink sink) {
56 super(null, factory, pipeline, sink);
57 }
58
59 @Override
60 public ChannelFuture connect(SocketAddress remoteAddress) {
61 return getUnsupportedOperationFuture();
62 }
63
64 @Override
65 public ChannelFuture disconnect() {
66 return getUnsupportedOperationFuture();
67 }
68
69 @Override
70 public int getInterestOps() {
71 return OP_NONE;
72 }
73
74 @Override
75 public ChannelFuture setInterestOps(int interestOps) {
76 return getUnsupportedOperationFuture();
77 }
78
79 @Override
80 protected void setInterestOpsNow(int interestOps) {
81 // Ignore.
82 }
83
84 @Override
85 public ChannelFuture write(Object message) {
86 return getUnsupportedOperationFuture();
87 }
88
89 @Override
90 public ChannelFuture write(Object message, SocketAddress remoteAddress) {
91 return getUnsupportedOperationFuture();
92 }
93
94 public boolean isConnected() {
95 return false;
96 }
97 }