Derby db named query causes parse error when using derby db MONTH function

Question

Hi all!
I'm trying to create an application using the persistance api and beans binding. I have created my database and entity classes.
My problem is creating a named query that uses some of the functionality from the derby database (which is embedded in the application).
I have a named query:
@NamedQuery(name = "Vehicles.findbymotmonth", query = "SELECT v FROM Vehicles v WHERE MONTH(v.lastmotdate) = :monthnumber") The actual query works fine when I send it directly to the db (with the parameter filled in) but causes an exception when used as a named query:
Local Exception Stack:
Exception [TOPLINK-8025] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.EJBQLException
Exception Description: Syntax error parsing the query [Vehicles.findbymotmonth: SELECT v FROM Vehicles v WHERE MONTH(v.lastmotdate) = :monthnumber], line 1, column 32: unexpected token [MONTH].
Internal Exception: line 1:32: unexpected token: MONTH
        at oracle.toplink.essentials.exceptions.EJBQLException.unexpectedToken(EJBQLException.java:389)
... I've tried looking for solutions online but it seems evryone just writes up the original java db application example provided by sun and no one has tried doing more than "select c from customers c".
I'm using the netbeans ide (6.5).
Please tell me there is a simple solution to this and the persistance API can handle complex queries!
Thanks in advance.

Answer 1

one solution: assume the toplink library to be so full of bugs as to be unusable and switch to the hibernate persistance manager where it works fine.
Edited by: pointer2null on Feb 17, 2009 11:02 AM