empty EL expression on JSF datatable var attribute's field always false

Question

I have the following EL expression which references a property on the var attribute: `empty _item.addressLine1` `addressLine1` is a String property on the Address bean, which is accessed via the `personBean.person.addresses` property which returns a `Set

`. Here is the EL expression in context: ```
.... ``` The problem is the expression always returns false, regardless of whether addressLine1 is the empty string or not. As if to confirm this, The facelet Validator in Eclipse produces the following warning: This empty expre…

Accepted Answer

The code looks fine so far. This warning is invalid. Turn off EL validation in Eclipse if it bothers you.

As to the concrete problem, most likely the `#{_item.addressLine1}` itself is really empty. You need to make sure that this is not empty.

empty EL expression on JSF datatable var attribute's field always false

Solution

Problem