@Override
 public void finish() {
   super.finish();
   if (reader != null) { // we are configuring an operator
     state.getTranslationConfiguration().setParameters(reader);
     state.getDataResultSetFactory().setParameters(reader);
     getState().getDataResultSetFactory().close();
   }
 }
 @Override
 public void cancel() {
   super.cancel();
   getState().getDataResultSetFactory().close();
 }