1 /***
2 *
3 * Copyright 2004 Hiram Chirino
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.activeio;
18
19 import java.io.IOException;
20 import java.net.URI;
21
22
23 /***
24 * A SynchChannelFilter can be used as a filter another {@see org.activeio.SynchChannel}
25 * Most {@see org.activeio.SynchChannel} that are not directly accessing the network will
26 * extends the SynchChannelFilter since they act as a filter between the client and the network.
27 *
28 * @version $Revision$
29 */
30 public class FilterSynchChannelServer implements SynchChannelServer {
31
32 private final SynchChannelServer next;
33
34 public FilterSynchChannelServer(SynchChannelServer next) {
35 this.next = next;
36 }
37
38 /***
39 * @see org.activeio.Disposable#dispose()
40 */
41 public void dispose() {
42 next.dispose();
43 }
44
45 /***
46 * @see org.activeio.Service#start()
47 */
48 public void start() throws IOException {
49 next.start();
50 }
51
52 /***
53 * @see org.activeio.Service#stop(long)
54 */
55 public void stop(long timeout) throws IOException {
56 next.stop(timeout);
57 }
58
59 /***
60 * @return Returns the next.
61 */
62 public SynchChannelServer getNext() {
63 return next;
64 }
65
66 /***
67 * @see org.activeio.SynchChannelServer#accept(long)
68 */
69 public Channel accept(long timeout) throws IOException {
70 return next.accept(timeout);
71 }
72
73 /***
74 * @see org.activeio.ChannelServer#getBindURI()
75 */
76 public URI getBindURI() {
77 return next.getBindURI();
78 }
79
80 /***
81 * @see org.activeio.ChannelServer#getConnectURI()
82 */
83 public URI getConnectURI() {
84 return next.getConnectURI();
85 }
86
87 public Object narrow(Class target) {
88 if( target.isAssignableFrom(getClass()) ) {
89 return this;
90 }
91 return next.narrow(target);
92 }
93
94 public String toString() {
95 return next.toString();
96 }
97 }