public static JREvaluator loadEvaluator(JasperReport jasperReport, JRCrosstab crosstab)
      throws JRException {
    JRCompiler compiler = getCompiler(jasperReport);

    return compiler.loadEvaluator(jasperReport, crosstab);
  }
  public static JREvaluator loadEvaluator(JasperReport jasperReport, JRDataset dataset)
      throws JRException {
    JRCompiler compiler = getCompiler(jasperReport);

    return compiler.loadEvaluator(jasperReport, dataset);
  }