FULL PRODUCT VERSION :
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_01-b08)
Java HotSpot(TM) Client VM (build 1.5.0_01-b08, mixed mode)


A DESCRIPTION OF THE PROBLEM :
When Enums are passed over RMI IIOP, they are not serialized/deserialized correctly.

They fail the equals() test. This is quite major.

I have an application that serializes an enumeration across a socket connection. When I read one and do an equals against one of the local Enum objects, it fails. However, enum.name().equals(deserializedEnum.name()) returns true and so does enum.getClass().equals(deserializedEnum.name()).

I am doing an import static com.foo.bar.MyEnum.* when I set my items to be serialized, I don't know if that causes a problem or not.

However, I can't reproduce the error simply. Creating a local ByteArrayOutput/Input streams works ok. This seems to be happening over a socket connection.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
javac EnumIIOPBreakage.java
rmic -classpath . -iiop Server
java -classpath . EnumIIOPBreakage


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
equal?                 true
classes equal? true
names equal?   true
ACTUAL -
equal?                 false
classes equal? true
names equal?   true

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.rmi.*;
import java.util.*;

import javax.rmi.*;
import javax.naming.*;

enum MyEnum { ONE, TWO, THREE };

public class EnumIIOPBreakage
{
  public static void main(String[] args)
    throws Throwable
  {
    Hashtable properties = new Hashtable();
    properties.put("java.naming.factory.initial",
                   "com.sun.jndi.cosnaming.CNCtxFactory");
    properties.put("java.naming.provider.url", "iiop://localhost:1099");

    new Server(properties);

    Context context = new InitialContext(properties);
    Object ref = context.lookup("server");
    RServer server = (RServer) PortableRemoteObject.narrow(ref, RServer.class);

    System.out.println("equal?         " +
                       MyEnum.ONE.equals(server.get(MyEnum.ONE.name())));
    System.out.println("classes equal? " +
                       MyEnum.ONE.getClass().equals(
                           server.get(MyEnum.ONE.name()).getClass()));
    System.out.println("names equal?   " +
                       MyEnum.ONE.name().equals(
                           server.get(MyEnum.ONE.name()).name()));
  }
}

class Server
  implements RServer
{
  public Server(Hashtable properties)
    throws Throwable
  {
    PortableRemoteObject.exportObject(this);

    Context context = new InitialContext(properties);
    context.rebind("server", this);
  }

  public MyEnum get(String name)
  {
    return MyEnum.valueOf(name);
  }
}


interface RServer
  extends Remote
{
  MyEnum get(String name)
    throws RemoteException;
}

---------- END SOURCE ----------
###@###.### 2005-05-30 05:28:17 GMT