private static boolean handleCustCreditAndProdQuant(Session session, SalesOrder s) { Customer c = (Customer) session.get(Customer.class, s.getCustomer().getCode()); if (s.getTotalPrice() > (c.getCreditLimit() - c.getCurrentCredit())) { return false; } else { Double curCredit = c.getCreditLimit() - s.getTotalPrice() - c.getCurrentCredit(); c.setCurrentCredit(curCredit); session.saveOrUpdate(c); } for (OrderLines ol : s.getOrderLinesList()) { Product p = (Product) session.get(Product.class, ol.getProduct().getCode()); int remQuantity = p.getQuantity() - ol.getQuantity(); if (remQuantity < 0) { return false; } else { p.setQuantity(remQuantity); session.saveOrUpdate(p); } } return true; }