1/*
2 * Copyright (c) 1998, 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
24package extension;
25
26import java.util.Hashtable;
27import java.io.*;
28
29public class ExtendedObjectInputStream extends ObjectInputStream {
30
31    private static Hashtable renamedClassMap;
32
33    public ExtendedObjectInputStream(InputStream si)
34        throws IOException, StreamCorruptedException
35    {
36        super(si);
37    }
38
39    protected Class resolveClass(ObjectStreamClass v)
40        throws IOException, ClassNotFoundException
41    {
42        if (renamedClassMap != null) {
43            //      System.out.println("resolveClass(" + v.getName() + ")");
44            Class newClass = (Class)renamedClassMap.get(v.getName());
45            if (newClass != null) {
46                v = ObjectStreamClass.lookup(newClass);
47            }
48        }
49        return super.resolveClass(v);
50    }
51
52    public static void addRenamedClassName(String oldName, String newName)
53        throws ClassNotFoundException
54    {
55        Class cl = null;
56
57        if (renamedClassMap == null)
58            renamedClassMap = new Hashtable(10);
59        if (newName.startsWith("[L")) {
60            //      System.out.println("Array processing");
61            Class componentType =
62                Class.forName(newName.substring(2));
63            //System.out.println("ComponentType=" + componentType.getName());
64            Object dummy =
65                java.lang.reflect.Array.newInstance(componentType, 3);
66
67            cl = dummy.getClass();
68            //      System.out.println("Class=" + cl.getName());
69        }
70        else
71            cl = Class.forName(newName);
72        //System.out.println("oldName=" + oldName +
73        //                   " newName=" + cl.getName());
74        renamedClassMap.put(oldName, cl);
75    }
76
77}
78