public Context getInitialContext(Hashtable env) throws NamingException 
{
        String providerURL = (String) env.get(Context.PROVIDER_URL);
        Name prefix = null;
        /** This may be a comma separated list of provider urls in which
          case we do not parse the urls for the requested context prefix name
        */
        int comma = providerURL != null ? providerURL.indexOf(',') : -1;
        if( providerURL != null && comma <  0 )
        {
            Name name = new CompoundName(providerURL, NamingParser.syntax);
            String serverInfo = NamingContext.parseNameForScheme(name, env);
            if( serverInfo != null )
            {
               env = (Hashtable) env.clone();
               // Set hostname:port value for the naming server
               env.put(Context.PROVIDER_URL, serverInfo);
               // Set the context prefix to name
               Name parsedName = (Name) env.get(NamingContext.JNP_PARSED_NAME);
               if( parsedName != null )
                  prefix = parsedName;
               else
                  prefix = name;
            }
        }
        return new NamingContext(env, prefix, null);
}

 public Object getObjectInstance(Object obj,
    Name name,
    Context nameCtx,
    Hashtable environment) throws Exception 
{
//      System.out.println(obj+" "+name+" "+nameCtx+" "+environment);
      Context ctx = getInitialContext(environment);
      Reference ref = (Reference)obj;
      return ctx.lookup((String)ref.get("URL").getContent());
}