Java项目中使用Hibernate处理数据

// ... Configuration cfg = new Configuration()                     .addClass(Product.class)                     .addClass(Order.class)                     .addClass(OrderItem.class); // ... Order order = new Order(); order.addProduct(milk, 3); order.addProduct(coffee, 5); // ... sess = sf.openSession(); Transaction t = sess.beginTransaction(); sess.save(order); t.commit(); sess.close(); System.out.println(order); // ... 

// ... String query = "select o from o "     + "in class test.hibernate.Order "     + "where o.priceTotal ＞ :priceTotalLower "     + "and o.priceTotal ＜ :priceTotalUpper"; // ...                 Query q = sess.createQuery(query); q.setDouble("priceTotalLower",               Double.parseDouble(args[0])); q.setDouble("priceTotalUpper",               Double.parseDouble(args[1])); List list = q.list(); // ... sess.close(); // ... 

// ... String query = "select o from o "     + "in class test.hibernate.Order "     + "where o.priceTotal ＞ :priceTotalLower "     + "and o.priceTotal ＜ :priceTotalUpper"; Transaction tx = sess.beginTransaction(); sess.delete(query,      new Object[]{new Double(args[0]),                   new Double(args[1])},      new Type[]{Hibernate.DOUBLE,                 Hibernate.DOUBLE}            );        tx.commit(); sess.close();