JPA 与具有继承的实体共享 pk 关系

如何解决JPA 与具有继承的实体共享 pk 关系

是否可以通过共享密钥与具有 TABLE_PER_CLASS 继承的实体建立一对一关系？

我有 UserEntity 和 DetailsEntity，它们是一对一的。 UserEntity 与 DetailsEntity 共享 pk（没有 UserEntity，DetailsEntity 没有意义，反之亦然）。 DetailsEntity 是不同类型 Details 的父类。

@Entity
@Table(schema = "USERS",name = "USER")
data class UserEntity(
    @Id
    @Column(name = "ID")
    var id: String,@OnetoOne(mappedBy = "user",cascade = [CascadeType.ALL],orphanRemoval = true)
    var details: DetailsEntity?
)

@Entity
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
abstract class DetailsEntity(
    @Id
    @Column(name = "ID")
    var id: String,@MapsId
    @OnetoOne
    @JoinColumn(name = "ID")
    var user: UserEntity
)

@Entity
@Table(schema = "USERS",name = "USER_DETAILS")
class UserDetailsEntity(
    id: String,user: UserEntity,): DetailsEntity(id,user)

@Entity
@Table(schema = "USERS",name = "CUSTOMER_DETAILS")
class CustomerDetailsEntity(
    id: String,@Column(name = "CUSTOMER_ID")
    var customerId: Long
): DetailsEntity(id,user)

除非一种 Details 被另一种替代，否则这种结构可以正常工作。

例如

UserEntity user = UserEntity("id")
Details details = UserDetailsEntity("id")

user.details = details
details.user = user

repo.save(user) //This works fine. User and details are persisted.

Details newDetails = CustomerDetailsEntity("id")
user.details = newDetails
newDetails.user = user

repo.save(user) // This leads to "A different object with the same identifier value was already associated with the session : [ru.raiffeisen.rmcp.user.adapter.out.persistence.entity.CustomerDetailsEntity#id]"

我了解问题的性质 - 来自单个层次结构的两个实体同时出现在 PersistenceContext 中：UserDetailsEntity("id") 和 CustomerDetailsEntity("id")。

我曾尝试在替换之前分离旧的 UserDetailsEntity，但在合并 UserEntity 期间，它将 UserDetailsEntity("id") 加载回处于 MANAGED 状态的 PersistenceContext，并且发生了相同的错误。

有没有办法用可替换的细节来组织这种关系？