1/*
2 * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package java.net;
27
28import java.util.List;
29import java.util.Map;
30
31/**
32 * A CookieStore object represents a storage for cookie. Can store and retrieve
33 * cookies.
34 *
35 * <p>{@link CookieManager} will call {@code CookieStore.add} to save cookies
36 * for every incoming HTTP response, and call {@code CookieStore.get} to
37 * retrieve cookie for every outgoing HTTP request. A CookieStore
38 * is responsible for removing HttpCookie instances which have expired.
39 *
40 * @author Edward Wang
41 * @since 1.6
42 */
43public interface CookieStore {
44    /**
45     * Adds one HTTP cookie to the store. This is called for every
46     * incoming HTTP response.
47     *
48     * <p>A cookie to store may or may not be associated with an URI. If it
49     * is not associated with an URI, the cookie's domain and path attribute
50     * will indicate where it comes from. If it is associated with an URI and
51     * its domain and path attribute are not specified, given URI will indicate
52     * where this cookie comes from.
53     *
54     * <p>If a cookie corresponding to the given URI already exists,
55     * then it is replaced with the new one.
56     *
57     * @param uri       the uri this cookie associated with.
58     *                  if {@code null}, this cookie will not be associated
59     *                  with an URI
60     * @param cookie    the cookie to store
61     *
62     * @throws NullPointerException if {@code cookie} is {@code null}
63     *
64     * @see #get
65     *
66     */
67    public void add(URI uri, HttpCookie cookie);
68
69
70    /**
71     * Retrieve cookies associated with given URI, or whose domain matches the
72     * given URI. Only cookies that have not expired are returned.
73     * This is called for every outgoing HTTP request.
74     *
75     * @return          an immutable list of HttpCookie,
76     *                  return empty list if no cookies match the given URI
77     *
78     * @param uri       the uri associated with the cookies to be returned
79     *
80     * @throws NullPointerException if {@code uri} is {@code null}
81     *
82     * @see #add
83     *
84     */
85    public List<HttpCookie> get(URI uri);
86
87
88    /**
89     * Get all not-expired cookies in cookie store.
90     *
91     * @return          an immutable list of http cookies;
92     *                  return empty list if there's no http cookie in store
93     */
94    public List<HttpCookie> getCookies();
95
96
97    /**
98     * Get all URIs which identify the cookies in this cookie store.
99     *
100     * @return          an immutable list of URIs;
101     *                  return empty list if no cookie in this cookie store
102     *                  is associated with an URI
103     */
104    public List<URI> getURIs();
105
106
107    /**
108     * Remove a cookie from store.
109     *
110     * @param uri       the uri this cookie associated with.
111     *                  if {@code null}, the cookie to be removed is not associated
112     *                  with an URI when added; if not {@code null}, the cookie
113     *                  to be removed is associated with the given URI when added.
114     * @param cookie    the cookie to remove
115     *
116     * @return          {@code true} if this store contained the specified cookie
117     *
118     * @throws NullPointerException if {@code cookie} is {@code null}
119     */
120    public boolean remove(URI uri, HttpCookie cookie);
121
122
123    /**
124     * Remove all cookies in this cookie store.
125     *
126     * @return          {@code true} if this store changed as a result of the call
127     */
128    public boolean removeAll();
129}
130