class Categorize2Real extends Categorize<RealParameter, RealLiteral> implements RealParameter {

        @Override
        public Double getValue(ResultSet rs, long fid) throws ParameterException{
            if (rs == null){
                throw new ParameterException("No feature");
            }
            return getParameter(rs, fid).getValue(rs, fid);
        }

        public  Categorize2Real(RealParameter initialClass, RealLiteral fallback, RealParameter lookupValue);
        public  Categorize2Real(CategorizeType expr);

}