public void deleteObsThatReference(Order order) {
		int orderId;

		Session session = sessionFactory.openSession();
		Transaction tx = session.beginTransaction();

		if (order.getOrderId() != null) {
			orderId = order.getOrderId();

			String hqlDelete = "delete Obs where orderId = :order_id";
			int deletedEntities = session.createQuery(hqlDelete).setInteger("order_id", orderId).executeUpdate();
			tx.commit();
			session.close();
		}
	}