@Override
 public void initialize(URL location, ResourceBundle resources) {
   try {
     initGrains();
     initProviders();
   } catch (DataBaseException e) {
     Utils.showErrorDialog("Ошибка базы данных!", e);
   }
 }
  public void HandlerCalcPriceButton(ActionEvent event) {
    try {
      grain = getGrain(selectGrainCb.getValue());
      System.out.println("> " + grain.getName());

      try {
        grain.setWeight(Double.parseDouble(weightTf.getText()));
      } catch (NumberFormatException e) {
        weightTf.requestFocus();
        throw new NumberFormatException("Вес партии зерна");
      }

      for (Entry<String, TextField> entry : propertiesTf.entrySet()) {
        TextField tf = entry.getValue();
        String propertyName = entry.getKey();
        System.out.println("\t> " + propertyName);

        if (!tf.isDisable()) {
          try {
            grain.getProperty(propertyName).setValue(Double.parseDouble(tf.getText()));

          } catch (NumberFormatException e) {
            tf.requestFocus();
            throw new NumberFormatException(grain.getProperty(propertyName).getDescription());
          }

          grain.getProperty(propertyName).setEnabled(true);

        } else {
          grain.getProperty(propertyName).setEnabled(false);
        }
      }

      System.out.println("> before calculator");

      PriceCalculator calculator = new PriceCalculator(grain, dao);
      calculator.calculatePrice();
      infoTa.setText(calculator.toString());

      Supply supply = new Supply();
      supply.setProvider(selectProviderCb.getValue());
      supply.setDate(new Date(Calendar.getInstance().getTimeInMillis()));
      //            supply.setGrain(grain.getName());
      supply.setGrain(grain.getDescription());
      supply.setWeight(grain.getWeight());
      supply.setPrice(calculator.getPrice());

      dao.saveSupply(supply);

    } catch (RestrictiveConditionException e) {
      Utils.showErrorDialog("Ограшичительные кондиции!", e);
      infoTa.clear();
    } catch (DataBaseException e) {
      Utils.showErrorDialog("Обшибка базы данных!", e);
      infoTa.clear();
    } catch (NumberFormatException e) {
      Utils.showErrorDialog("Неверный ввод!", e);
      infoTa.clear();
    } catch (Exception ex) {
      Utils.showErrorDialog("Ошибка!", ex);
      infoTa.clear();
    }
  }