JSF 2 - Bean Validation: validation failed -> empty values are replaced with last valid values from managed bean

Question

I do not understand the behaviour of JSF2 during valdation. Hope someone can help me.

I have a form where the fields are validated after (ajax) submit - ok

Answer 1

Had a similar issue where a value loaded in from the backing bean would get reset when the field was blanked out and another component failed validation. I had to make a slight addition to BalusC's code to make it work.

protected String getCurrentValue(FacesContext context,
                                     UIComponent component) {

        if (component instanceof UIInput && !((UIInput) component).isValid()) {
            Object submittedValue = ((UIInput) component).getSubmittedValue();
            if (submittedValue != null) {
                // value may not be a String...
                return submittedValue.toString();
            } else {
                return null;
            }
        }


        String currentValue = null;
        Object currentObj;

        if ( component instanceof UIInput && ((UIInput)component).isLocalValueSet() )
        {
           currentObj = ((UIInput)component).getLocalValue();
        }
        else {
            currentObj = getValue(component);
        }

        if (currentObj != null) {
            currentValue = getFormattedValue(context, component, currentObj);
        }
        return currentValue;


    }