Bean validation and master details grid

Vaadin 6 / 7 / 8 Framework Data Binding
1

Hi to all,

I am trying to implement a component made of the following elements:

  2. A table
  3. Some text fields, one for each bean property
  4. A button to save the changes
  5. A button to discard the changes

Basically, the user clicks on a row of the table and automatically the fields are feeded with the clicked item.
I have implemented this feature by using a BeanItemContainer for the table and a BeanFieldGroup for the text fields; in addition, I have caught the ValueChangeEvent event of the table to set the bean to the BeanFieldGroup.

Wheneven I click on a row, I set the item data source to the field, but this way Vaadin adds the validators each time I click a row. As a result, if I have a validation error, the message results as duplicate.
To solve the problem, I had to manually remove the validators. Is there any other solution? Am I missing something?
It would be nice if the BeanFieldGroup would clear its validators before setting the new bean.

I am using Vaadin 7 nightly build (2012/12/01).

Thank you.

Here it is a snippet of code:


                final BeanFieldGroup<LocaleVO> form2 = new BeanFieldGroup<LocaleVO>(LocaleVO.class);
		form2.setBuffered(true);
		
		table.addValueChangeListener(new Property.ValueChangeListener() {
			
			@Override
			public void valueChange(ValueChangeEvent event) {
				final LocaleVO item = (LocaleVO) table.getValue();
				for (Field f : form2.getFields()) {
					f.removeAllValidators();
				}
				
				form2.setItemDataSource(new BeanItem<LocaleVO>(item));
			}
			
			
		});
		table.setSelectable(true);
		table.setImmediate(true);

I have found the problem in this snippet of code from BeanFieldGroup:


protected void configureField(Field<?> field) {
        super.configureField(field);
        // Add Bean validators if there are annotations
        if (isBeanValidationImplementationAvailable()) {
            BeanValidator validator = new BeanValidator(beanType,
                    getPropertyId(field).toString());
            field.addValidator(validator); // This will add a lot of validators...
            if (field.getLocale() != null) {
                validator.setLocale(field.getLocale());
            }
        }
    }