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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.adapter;
18  
19  import java.io.IOException;
20  
21  import org.activeio.Packet;
22  import org.activeio.RequestChannel;
23  import org.activeio.RequestListener;
24  import org.activeio.SynchChannel;
25  
26  
27  /***
28   * Creates a {@see org.activeio.RequestChannel} out of a {@see org.activeio.SynchChannel}.
29   * Does not support handing requests.  It can only be used to send requests.  
30   * 
31   * @version $Revision$
32   */
33  final public class AsynchChannelToClientRequestChannel implements RequestChannel {
34      
35      private final SynchChannel next;
36      
37      public AsynchChannelToClientRequestChannel(SynchChannel next) {
38          this.next = next;
39      }
40  
41      public Packet request(Packet request, long timeout) throws IOException {
42          next.write(request);
43          next.flush();
44          return next.read(timeout);
45      }
46  
47      public void setRequestListener(RequestListener requestListener) throws IOException {
48          throw new IOException("Operation not supported.");
49      }
50  
51      public RequestListener getRequestListener() {
52          return null;
53      }
54  
55      public Object narrow(Class target) {
56          return next.narrow(target);
57      }
58  
59      public void dispose() {
60          next.dispose();
61      }
62  
63      public void start() throws IOException {
64          next.start();
65      }
66  
67      public void stop(long timeout) throws IOException {
68          next.stop(timeout);
69      }
70  }