0N/A/*
2362N/A * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A/* @test
0N/A * @bug 4461737
0N/A * @summary Verify that serialization functions properly for externalizable
0N/A * classes if ObjectInputStream.readClassDescriptor() returns a local
0N/A * class descriptor.
0N/A */
0N/A
0N/Aimport java.io.*;
0N/Aimport java.util.*;
0N/A
0N/Aclass LoopbackOutputStream extends ObjectOutputStream {
0N/A LinkedList descs;
0N/A
0N/A LoopbackOutputStream(OutputStream out, LinkedList descs)
0N/A throws IOException
0N/A {
0N/A super(out);
0N/A this.descs = descs;
0N/A }
0N/A
0N/A protected void writeClassDescriptor(ObjectStreamClass desc)
0N/A throws IOException
0N/A {
0N/A descs.add(desc);
0N/A }
0N/A}
0N/A
0N/Aclass LoopbackInputStream extends ObjectInputStream {
0N/A LinkedList descs;
0N/A
0N/A LoopbackInputStream(InputStream in, LinkedList descs) throws IOException {
0N/A super(in);
0N/A this.descs = descs;
0N/A }
0N/A
0N/A protected ObjectStreamClass readClassDescriptor()
0N/A throws IOException, ClassNotFoundException
0N/A {
0N/A return (ObjectStreamClass) descs.removeFirst();
0N/A }
0N/A}
0N/A
0N/Apublic class ExternLoopback implements Externalizable {
0N/A
0N/A String a, b, c;
0N/A
0N/A public ExternLoopback() {
0N/A }
0N/A
0N/A ExternLoopback(String a, String b, String c) {
0N/A this.a = a;
0N/A this.b = b;
0N/A this.c = c;
0N/A }
0N/A
0N/A public void writeExternal(ObjectOutput out) throws IOException {
0N/A out.writeBoolean(false);
0N/A out.writeObject(a);
0N/A out.writeObject(b);
0N/A out.writeObject(c);
0N/A }
0N/A
0N/A public void readExternal(ObjectInput in)
0N/A throws IOException, ClassNotFoundException
0N/A {
0N/A in.readBoolean();
0N/A a = (String) in.readObject();
0N/A b = (String) in.readObject();
0N/A c = (String) in.readObject();
0N/A }
0N/A
0N/A public boolean equals(Object obj) {
0N/A if (!(obj instanceof ExternLoopback)) {
0N/A return false;
0N/A }
0N/A ExternLoopback other = (ExternLoopback) obj;
0N/A return streq(a, other.a) && streq(b, other.b) && streq(c, other.c);
0N/A }
0N/A
0N/A static boolean streq(String s1, String s2) {
0N/A return (s1 != null) ? s1.equals(s2) : (s2 == null);
0N/A }
0N/A
0N/A public static void main(String[] args) throws Exception {
0N/A ExternLoopback lb = new ExternLoopback("foo", "bar", "baz");
0N/A LinkedList descs = new LinkedList();
0N/A ByteArrayOutputStream bout = new ByteArrayOutputStream();
0N/A LoopbackOutputStream lout = new LoopbackOutputStream(bout, descs);
0N/A lout.writeObject(lb);
0N/A lout.close();
0N/A
0N/A LoopbackInputStream lin = new LoopbackInputStream(
0N/A new ByteArrayInputStream(bout.toByteArray()), descs);
0N/A ExternLoopback lbcopy = (ExternLoopback) lin.readObject();
0N/A if (!lb.equals(lbcopy)) {
0N/A throw new Error();
0N/A }
0N/A }
0N/A}