private EntityManager manager;

String sql = "select max(wm.id) as maxId, min(wm.id) as minId from wm_dayloan_fund as wm ";
Query query = manager.createNativeQuery(sql);
if (query != null && query.getResultList() != null
&& query.getResultList().size() > 0) {
Object[] obj = (Object[]) query.getSingleResult();
if (obj != null && obj.length > 0) {
IDRange idRange = new IDRange((BigInteger) obj[0],
(BigInteger) obj[1]);
return idRange;
}
}