code: @Override
      public void orderRows(final OrderBy ob) {
          if (ob != null) {
              ob.setMetaData(getMetaData());
              ob.setParser(parser);
              Collections.sort(rows, ob);
              goTop();
          }
      }
docs: /*
  (non-Javadoc)
  
  @see net.sf.flatpack.DataSet#orderRows(net.sf.flatpack.ordering.OrderBy)