ServerContext ctx = ( ServerContext ) InvocationStack.getInstance().peek().getCaller(); LdapPrincipal user = ctx.getPrincipal(); Name userGroupName = null;
    public void add( NextInterceptor next, String upName, Name normName, Attributes entry ) throws NamingException    {        next.add( upName, normName, entry );        cache.subentryAdded( upName, normName, entry );    }