Polymorphism support with Web Services?

[Jim Hazen]

I have a simple class (listed below).  I would expect it to be a trivial
case to determine which method to call.  After all the signature is
nothing alike (either type wise nor number of args wise).

Axis Beta 2 is able to generate WSDL for this class without error. 
However the stubs generated by WSDL2Java are broken.  Is this a bug in
WSDL2Java or an inherent problem with Web Services?

-Jim

---------- Java class

public class Calculator
{
   public Calculator(){}

   public int calculate(int a, int b){ return a+b;}
   public int calculate(String s){return s.length();}
}

---------- Generated interface

/**
 * Calculator.java
 *
 * This file was auto-generated from WSDL
 * by the Apache Axis Wsdl2java emitter.
 */

package DefaultNamespace;

public interface Calculator extends java.rmi.Remote {
    public int calculate(java.lang.String s) throws
java.rmi.RemoteException;
    public int calculate(java.lang.String s) throws
java.rmi.RemoteException;
}