Type-safe enum in CMP EJB field...

Question

Is it possible to use a type-safe enum like this in an EJB CMP field?
I have tried to do that but although the code compiles I get errors.
package dataBeansPkg;
import java.io.Serializable;
import java.io.ObjectStreamException;
import java.util.HashMap;
public final class Estado implements Serializable
private static final String ACTIVODESC = "Activo";
private static final String INACTIVODESC = "Inactivo";
private static final String ELIMINADODESC = "Eliminado";
private static final String BLOQUEADODESC = "Bloqueado";
private static HashMap VALUES = new HashMap();
private final String status;
private final String descripcion;
public static final Estado ACTIVO = new Estado("A", ACTIVODESC);
public static final Estado INACTIVO = new Estado("I", INACTIVODESC);
public static final Estado ELIMINADO = new Estado("E", ELIMINADODESC);
public static final Estado BLOQUEADO = new Estado("B", BLOQUEADODESC);
protected Estado()
this.status = null;
this.descripcion = null;
protected Estado(String estado, String descripcion)
this.status = estado;
this.descripcion = descripcion;
VALUES.put(estado, this);
public String getValor() { return status; }
public String getEstado() { return status; }
public String getDescripcion() { return descripcion; }
public String toString() { return getValor(); }
public final boolean equals(Object o) { return super.equals(o); }
public final int hashCode() { return super.hashCode(); }
public static Estado find(String estado)
if(VALUES.containsKey(estado)) {
return (Estado)VALUES.get(estado);
return null;
public Object readResolve()
Object result = find(status);
if(result != null)
return result;
else
return INACTIVO; // valor por omision
Whenever I run a client using the bean with a field associated to this enum, I get...
java.io.StreamCorruptedException: Caught EOFException while reading the stream header
and
Error loading state: java.io.StreamCorruptedException: Caught EOFException while reading the stream header
Is it possible to use a type-safe enum as a field in an CMP bean?

Answer 1

Yep... I think that's what I found. By using public methods in my enum class to map it's string member to the EJB field I was able to effectively use my enum in the EJB. The container does it work with a String but the EJB's clients only deal with a enum field. That's what I originally intended so, thanks for your response.