gistfile1.txt

// Find all employees older than 31
Query q = pm.newQuery("Native", new NativeQuery()
    {
        public boolean match(Object e)
        {
            if (!(e instanceof Employee))
            {
                return false;
            }
            return ((Employee)e).getAge() >= 32;
        }
        public Class getObjectType()
        {
            return Employee.class;
        }
    });

List results = (List)q.execute();