Name: avC70361 Date: 10/20/99



  The java.beans.beancontext.BeanContextSupport is incorrectly deserialized
in kestrel if it has been serialized in jdk 1.2.

Here is a test demonstrating the bug.
----------BeanContextSupportTest.java-------
import java.beans.beancontext.*;
import java.io.*;

public class BeanContextSupportTest {

  public static void main(String args[]) {

    BeanContextSupport bcs = new BeanContextSupport();

    if (args[0].equals("write")) {

      ObjectOutputStream stream = null;

      try {

        stream = new ObjectOutputStream(new FileOutputStream(args[1]));
        stream.writeObject(bcs);
        stream.close();

      } catch(IOException e) {
        System.out.println("Couldn't write to " + args[1] + " : " + e);
        System.exit(1);
      }

      System.out.println(args[1] + " written successfully");

    } else if (args[0].equals("read")) {

      ObjectInputStream stream = null;

      try {

        stream = new ObjectInputStream(new FileInputStream(args[1]));
        bcs = (BeanContextSupport)stream.readObject();

      } catch(InvalidClassException e) {
        System.out.println("Failed:" + e);
        System.exit(1);
      } catch(Exception e) {
        System.out.println(
          "Failed: couldn't read from " + args[1] + " : " + e
        );
        System.exit(1);
      }

      System.out.println("Passed");

    }

    System.exit(0);

  }

}
----------The test output----------
<avv@mozart(pts/3).485> jdk 1.2
<avv@mozart(pts/3).486> java -version
java version "1.2"
Classic VM (build JDK-1.2-V, green threads, sunwjit)
<avv@mozart(pts/3).487> java BeanContextSupportTest write file.ser
file.ser written successfully
<avv@mozart(pts/3).488> java BeanContextSupportTest read file.ser
Passed
<avv@mozart(pts/3).489> jdk 1.3
<avv@mozart(pts/3).490> java -version
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-K)
Java HotSpot (TM) Client VM (build 1.3-K, interpreted mode)
<avv@mozart(pts/3).491> java BeanContextSupportTest read file.ser
Failed:java.io.InvalidClassException: java.beans.beancontext.BeanContextSupport; Local class not compatible: stream classdesc serialVersionUID=-4879613978649577204 local class serialVersionUID=4976122088882138962

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mark.davidson@Eng 1999-11-15