Sorting a column according to LOV displayattribute's value?

Question

Hi,
a quick question over an issue that probably some of you have already encountered.
How to sort an af:column in a table according to the content (displayname) of the LOV associated with the FK attribute?
e.g. field Orders.CustomerId with a LOV that takes values from a Customers table, LOV value: Customers.Id, LOV display attribute: Customers.Name
If I click on the CustomerId column on the parent af:table (Orders), the column gets ordered according to Orders.CustomerID (or Customers.Id, they're the same of course) which is meaningless to the user.
How to actually make the column ordered according to what the user actually sees, thus Customers.Name?
Tried fiddling with af:column's sortProperty but got nowhere.
Is there a way to get this behaviour?
thx in advance

Answer 1

Hi,
Sorry. I overlooked the question. In this case, you might want to modify the VO query to include the FK attribute as well and change the sortProperty of the table to the new attribute.
For ex.
Emp (with Dname) VO query
select emp.empno......dept.dname
from emp emp, dept dept
where emp.deptno=dept.deptnoFor the deptno column in the af:table, change something like
<af:column sortProperty="Dname"  headerText="#{bindings.DeptView1.hints.Deptno.label}" id="c3">Also make sure, you set the Updatable property of the Dname attribute in the vo to never.
-Arun
Untested