1 /*
2 * Copyright 2012 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the 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 /**
19 * A {@link ChannelEvent} which represents the notification of the state of
20 * a child {@link Channel}. This event is for going upstream only. Please
21 * refer to the {@link ChannelEvent} documentation to find out what an upstream
22 * event and a downstream event are and what fundamental differences they have.
23 */
24 public interface ChildChannelStateEvent extends ChannelEvent {
25
26 /**
27 * Returns the <strong>parent</strong> {@link Channel} which is associated
28 * with this event. Please note that you should use {@link #getChildChannel()}
29 * to get the {@link Channel} created or accepted by the parent {@link Channel}.
30 */
31 Channel getChannel();
32
33 /**
34 * Returns the child {@link Channel} whose state has been changed.
35 */
36 Channel getChildChannel();
37 }