1 //========================================================================
2 //Copyright 2006-2007 Mort Bay Consulting Pty. Ltd.
3 //------------------------------------------------------------------------
4 //Licensed under the Apache License, Version 2.0 (the "License");
5 //you may not use this file except in compliance with the License.
6 //You may obtain a copy of the License at
7 //http://www.apache.org/licenses/LICENSE-2.0
8 //Unless required by applicable law or agreed to in writing, software
9 //distributed under the License is distributed on an "AS IS" BASIS,
10 //WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 //See the License for the specific language governing permissions and
12 //limitations under the License.
13 //========================================================================
14 package org.mortbay.jetty.client;
15
16 import java.io.IOException;
17
18 import org.mortbay.io.Buffer;
19 import org.mortbay.jetty.HttpFields;
20
21 /**
22 * An exchange that caches response status and fields for later use.
23 *
24 * @author gregw
25 *
26 */
27 public class CachedExchange extends HttpExchange
28 {
29 int _responseStatus;
30 HttpFields _responseFields;
31
32 public CachedExchange(boolean cacheFields)
33 {
34 if (cacheFields)
35 _responseFields = new HttpFields();
36 }
37
38 /* ------------------------------------------------------------ */
39 public int getResponseStatus()
40 {
41 if (_status < HttpExchange.STATUS_PARSING_HEADERS)
42 throw new IllegalStateException("Response not received");
43 return _responseStatus;
44 }
45
46 /* ------------------------------------------------------------ */
47 public HttpFields getResponseFields()
48 {
49 if (_status < HttpExchange.STATUS_PARSING_CONTENT)
50 throw new IllegalStateException("Headers not complete");
51 return _responseFields;
52 }
53
54 /* ------------------------------------------------------------ */
55 protected void onResponseStatus(Buffer version, int status, Buffer reason) throws IOException
56 {
57 _responseStatus = status;
58 super.onResponseStatus(version,status,reason);
59 }
60
61 /* ------------------------------------------------------------ */
62 protected void onResponseHeader(Buffer name, Buffer value) throws IOException
63 {
64 if (_responseFields != null)
65 _responseFields.add(name,value);
66 super.onResponseHeader(name,value);
67 }
68
69 }