1/*
2 * Copyright (c) 2000, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/* @test
25 * @bug 4311991
26 *
27 * @clean Write Read Foo Bar
28 * @compile Write.java
29 * @run main Write
30 * @clean Write Read Foo Bar
31 * @compile Read.java
32 * @run main Read
33 *
34 * @summary Test ObjectOutputStream.writeUnshared/readUnshared functionality.
35 */
36
37import java.io.*;
38
39class Foo implements Serializable {
40    private static final ObjectStreamField[] serialPersistentFields =
41        new ObjectStreamField[] {
42            new ObjectStreamField("shared1", String.class),
43            new ObjectStreamField("shared2", String.class, false),
44            new ObjectStreamField("unshared1", String.class, true),
45            new ObjectStreamField("unshared2", String.class, true)
46        };
47
48    String shared1, shared2, unshared1, unshared2;
49
50    Foo() {
51        shared1 = shared2 = unshared1 = unshared2 = "foo";
52    }
53}
54
55class Bar implements Serializable {
56    private static final long serialVersionUID = 0L;
57    Object obj;
58
59    Bar(Object obj) {
60        this.obj = obj;
61    }
62}
63
64public class Write {
65    public static void main(String[] args) throws Exception {
66        String str1 = "foo";
67        ByteArrayOutputStream bout = new ByteArrayOutputStream();
68        ObjectOutputStream oout = new ObjectOutputStream(bout);
69
70        oout.writeObject(str1);
71        oout.writeObject(str1);
72        oout.writeUnshared(str1);
73        oout.writeUnshared(str1);
74        oout.writeObject(new Foo());
75        oout.close();
76
77        ByteArrayInputStream bin =
78            new ByteArrayInputStream(bout.toByteArray());
79        ObjectInputStream oin = new ObjectInputStream(bin);
80        str1 = (String) oin.readObject();
81        if (oin.readObject() != str1) {
82            throw new Error();
83        }
84        String str2 = (String) oin.readObject();
85        String str3 = (String) oin.readObject();
86        if (str2 == str1 || str3 == str1 || str2 == str3) {
87            throw new Error();
88        }
89        if (! (str1.equals(str2) && str1.equals(str3))) {
90            throw new Error();
91        }
92
93        Foo foo = (Foo) oin.readObject();
94        if ((foo.shared1 != foo.shared2) ||
95            (foo.shared1 == foo.unshared1) ||
96            (foo.shared1 == foo.unshared2) ||
97            (foo.shared2 == foo.unshared1) ||
98            (foo.shared2 == foo.unshared2) ||
99            (foo.unshared1 == foo.unshared2))
100        {
101            throw new Error();
102        }
103
104        // write out object to be read by Read.main()
105        oout = new ObjectOutputStream(new FileOutputStream("tmp.ser"));
106        oout.writeObject(new Bar(str1));
107        oout.writeObject(str1);
108        oout.close();
109    }
110}
111