Question

I’m using ejb 2.1 BMP, JBoss 7.1 AS
I need to get List ordered by some field(it depends on user choice)
from database using ORDER BY in SQL statement.
Home Interface:

public interface AliveHome {  
    ...  
    Collection<Alive> findAllConstraint(...) [exceptions];  
    ...
}

When i change return type to List i get exception:

java.lang.ClassCastException: java.util.HashSet cannot be cast to java.util.List
$Proxy13.findAllConstraint(Unknown Source)

But i need List (because with HashSet there is no sense in ORDER BY)
How to get List?

Answer 1

There is no solution for JBoss 7. I just install JBoss 6
and it works with return type List !
=)