Do I need to add an import for QueryHome? Also, what is query home?

I got the bottom code for dynamic QL on a bea website, but it doesn't 
work in giving me problem for QueryHome (can not resolve symbol). How do 
I implement dynamic QL in weblogic 7.0. 

InitialContext ic = new InitialContext();
RolesHome rHome = (RolesHome)ic.lookup("");
QueryHome qh = (QueryHome)rHome;
						
String ejbQL = "SELECT DISTINCT OBJECT(o) FROM users AS o," + " IN
(o.forRoleID) AS r" + " WHERE r.iD = " + getID() + 
filter + orderBy;

Query query = qh.createQuery();

Thank you
Ronak Parekh