01 /*
02 * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
03 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04 *
05 * This code is free software; you can redistribute it and/or modify it
06 * under the terms of the GNU General Public License version 2 only, as
07 * published by the Free Software Foundation. Sun designates this
08 * particular file as subject to the "Classpath" exception as provided
09 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package java.net;
27
28 import java.io.InputStream;
29 import java.util.Map;
30 import java.util.List;
31 import java.io.IOException;
32
33 /**
34 * Represent channels for retrieving resources from the
35 * ResponseCache. Instances of such a class provide an
36 * InputStream that returns the entity body, and also a
37 * getHeaders() method which returns the associated response headers.
38 *
39 * @version 1.1, 03/09/22
40 * @author Yingxian Wang
41 * @since 1.5
42 */
43 public abstract class CacheResponse {
44
45 /**
46 * Returns the response headers as a Map.
47 *
48 * @return An immutable Map from response header field names to
49 * lists of field values. The status line has null as its
50 * field name.
51 * @throws IOException if an I/O error occurs
52 * while getting the response headers
53 */
54 public abstract Map<String, List<String>> getHeaders()
55 throws IOException;
56
57 /**
58 * Returns the response body as an InputStream.
59 *
60 * @return an InputStream from which the response body can
61 * be accessed
62 * @throws IOException if an I/O error occurs while
63 * getting the response body
64 */
65 public abstract InputStream getBody() throws IOException;
66 }
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