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In spring boot how to update a field with OneToMany relationship(在Spring Boot中如何使用OneToMany关系更新字段)

转载 作者:bug小助手 更新时间:2023-10-28 09:49:26 26 4
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I am new to spring boot. I am trying to do some examples to learn.

我是新来的。我试着做一些例子来学习。


I have 2 entitles user "profile" and "address".
profile can have many addresses.

我有2个授权用户“个人资料”和“地址”。配置文件可以有多个地址。


public class Address {

@Id
private UUID id;


private boolean primaryAddress;
}

and the profile

而这份档案


@Entity
public class UserProfile {

@Id
private UUID id;


@OneToMany(
fetch = FetchType.EAGER, orphanRemoval = true, cascade = CascadeType.REMOVE
)
@JoinColumn(
name = "profile_id",
foreignKey = @ForeignKey(name = "fk_address_userprofile")
)
private Set<Address> addressList = new HashSet<>();


}

when the user enter an address and if it is the primary address, i need to set primaryAddress field of all the other address of this user to false

当用户输入地址并且如果它是主要地址时,我需要将该用户的所有其他地址的PrimiyAddress字段设置为False


The problem I have is in my address repository how to write this query. I tried the native query but it does not seems to work.

我遇到的问题是在我的地址存储库中如何编写这个查询。我尝试了原生查询,但似乎不起作用。


@Repository
public interface AddressRepository extends JpaRepository<Address, UUID> {

@Modifying
//@Query(value = "UPDATE Address SET primary_address = false WHERE profile_id = ?1", nativeQuery = true)
@Query("UPDATE Address SET primaryAddress=false where UserProfile.id = ?1 ")
void resetPrimaryByUserProfileId(UUID userProfileId);
}

can anyone provide some help on how to do this?

有人能就如何做到这一点提供一些帮助吗?


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优秀答案推荐

The point of using ORM is allow us to use the OOP technique to update the DB tables. So you can think it with OOP mindset , just update the required Address object to the correct state and hibernate will figure out what is the update SQL , but not writing the update SQL by yourself.

使用ORM的目的是允许我们使用面向对象技术来更新数据库表。因此,您可以按照面向对象的思维方式来思考,只需将所需的Address对象更新到正确的状态,Hibernate就会找出什么是更新SQL,而不是自己编写更新SQL。


You can do something likes :

你可以做一些类似的事情:


@Entity
public class UserProfile {

public void addAddress(Address addr){
if(addr.primaryAddress){
addressList.forEach(addr->addr.setPrimaryAddress(false));
}
addressList.add(addr);
}
}

UserProfile userProfile = userProfileRepository.getById(1);
userPrfile.addAddress(someAddress);

By the way , I have the following code review comments for your reference :

顺便提一下,我有以下代码审查意见供您参考:



  • FetchType.EAGER is a bad idea.

  • Mapping one-to-many as the bi-directional may be more efficient .


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