[英]Spring transient annotation work for save but don't work for select
I am showing a grid table whit the service names with the last price register. 我正在显示带有最后价格寄存器的服务名称的网格表。 The problem is happen when I use the @Transient in my Service class. 当我在Service类中使用@Transient时,就会发生问题。
In this case: 在这种情况下:
I do this: 我这样做:
public List<Service> findAllWithPrice() {
NativeQuery<Service> query =
this.getCurrentSession()
.createSQLQuery(
"select s.*, FORMAT((select ps.price from priceServices ps where ps.idService = s.id order by ps.dateRegister DESC limit 1),2) as currentPrice from service s");
query.addEntity( Service.class );
return query.getResultList();
}
/*********************/
@Entity
@Table(name = "service")
public class Service {
/****/
@Transient
private String currentPrice;
public String getCurrentPrice() {
if ( currentPrice == null ) {
return "$ 0.0";
}
return currentPrice;
}
}
If I leave @Transient both save and select work but ALL prices come as zero. 如果我离开@Transient,则保存并选择工作,但所有价格均为零。 The currentPrice is coming null. currentPrice将变为空。
If I remove @Transient the select comes right. 如果我删除@Transient,则选择正确。 It loads the services with the last registered price for each one. 它以每个服务的最后注册价格加载服务。
But when I save to the bank, it returns an error saying that it did not find the currentPrice column (Because it really doesn't exist). 但是当我存到银行时,它返回一个错误,表明它找不到currentPrice列(因为它确实不存在)。
I searched here in the forum and on the internet but I didn't find a solution. 我在论坛和Internet上进行了搜索,但没有找到解决方案。
How can I solve this problem? 我怎么解决这个问题?
Thanks to the @M.Prokhorov Tip, I was able to solve my problem as follows: 感谢@ M.Prokhorov技巧,我能够如下解决我的问题:
In my ServiceDaoImpl class, I stopped using the findAllWithPrice method to use findAll only: 在ServiceDaoImpl类中,我停止使用findAllWithPrice方法来仅使用findAll :
public List<Service> findAll() {
return this.getCurrentSession().createQuery("from Service", Service.class).getResultList();
}
In my Service class I created a formula to fetch the last recorded price 在服务类中,我创建了一个公式来获取最近记录的价格
@Entity
@Table(name = "service")
public class Service {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "id")
private int id;
/****/
@Formula("(FORMAT((select ps.price from priceServices ps where ps.idService = id order by ps.dataRegister DESC limit 1),2))")
private String currentPrice;
public String getCurrentPrice() {
if ( currentPrice == null ) {
return "$ 0.0";
}
return currentPrice;
}
}
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