Delete a list in one shot

Question

Hi,
I'm using Hibernate 3 with Oracle 10, and in my next query I delete a list of objects one by one; I was wondering if it's possible to optimize my delete method so I delete the complete set of objects in one shot instead iterating my list of retrieved objects.
Please consider that I'm requested to maintain an ORM style so writing a delete sentence is not an option.
Thanks a lot.
public void deleteClientOrder(final Address userAddress, final ClientID clientID) throws HibernateException {
HibernateCommand command = new HibernateCommand() {
public Object execute(Session hibernateSession) {
List<String> list = hibernateSession
.createCriteria(ClientOrder.class)
.add(eq("userAddress", userAddress))
.add(eq("clientID", clientID))
.setProjection(Projections.projectionList()
.add(Projections.property("id")))
.setCacheable(false)
.list();
for (String persistenID : list) {
ClientOrder tmp = (ClientOrder) hibernateSession.get(ClientOrder.class, persistenID);
if (tmp != null) {
hibernateSession.delete(tmp);
return null;
}

Answer 1

TopLink provides bulk delete operations.
JPA:
em.createQuery("DELETE FROM Employee WHERE firstName LIKE 'D%' AND address = :ADDRESS")
     .setParameter("ADDRESS", address)
     .executeUpdate();Native:
DeleteAllQuery query = new DeleteAllQuery(Employee.class);
ExpressionBuilder eb = query.getExpressionBuilder();
Expression fnExp = eb.get("firstName").like("D%");
Expression aExp = eb.get("address").equal(address);
query.setSelectionCriteria(fnExp.and(aExp));
uow.executeQuery(query);Doug