Java JPA：相关记录不会被删除

我对数据库设计有问题

有一个实体用户

public class User implements UserDetails, Serializable {

    // ...

    @OneToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @JoinColumn(name = "MANAGER_ID")
    private Manager manager;

    // ...

}

有一个相关的管理者实体与用户实体关联

public class Manager {

    // ...

    @OneToMany(mappedBy = "manager", orphanRemoval = true)
    @LazyCollection(LazyCollectionOption.FALSE)
    private List<ExpertAndRequest> requests;

    @OneToOne(mappedBy = "manager", orphanRemoval = true)
    private User user;


    @OneToMany(mappedBy = "manager")
    private List<ParticipantRequest> participantRequests;


    // ...

}

public class ExpertAndRequest implements Serializable {

    // ...

    @ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @JoinColumn(name = "managerId", updatable = false, insertable = false, referencedColumnName = "id")
    private Manager manager;


    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "requestId", updatable = false, insertable = false, referencedColumnName = "id")
    private ParticipantRequest request;

    // ...

}


public class ParticipantRequest {

    // ...

    @OneToMany(mappedBy = "request", cascade = CascadeType.ALL)
    @LazyCollection(LazyCollectionOption.FALSE)
    private List<ExpertAndRequest> experts;

    @ManyToOne
    @JoinColumn(name = "manager_id")
    private Manager manager;

    // ...

}

我希望使用右侧的管理器和相关的用户删除ExpertAndRequest行。但这并没有发生，出现了一个错误

org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : my.package.name.model.Manager.user -> my.package.name.model.User

我做错了什么？谢谢

---

更新这是我删除之前所做的全部操作。除了搬家什么都没有

public ManagerApiResult deleteManager(@RequestParam(name = "id") Long id) {
    if(!this.isUserManager()) {
        return null;
    }

    ManagerApiResult res = new ManagerApiResult();

    Manager manager = this.managerRepository.findOne(id);

    if(manager == null) {
        res.errors.add(String.format("Manager id \"%s\" do not exist", id));
        return res;
    }
    this.managerRepository.delete(manager);
    this.managerRepository.flush();
    return res;
}

---

例外是自我解释的

---

在实体图的某个地方（管理者的用户），您有一个

用户

的实例，该实例在

管理者

之前的删除操作中未被保存？您是否在删除之前提交了保存实体的事务？@FiloménaPetržlénováno，我不是在事务中这样做的。而repository impl？@antoniosss，您是什么意思？是否要查看存储库代码？这是否与数据库设计有关？必须首先持久化/获取用户，或在删除之前从管理器中删除用户。我是否可以确保在删除管理器时，该用户会自动删除？我必须为此做些什么？持久化或获取。

public ManagerApiResult deleteManager(@RequestParam(name = "id") Long id) {
    if(!this.isUserManager()) {
        return null;
    }

    ManagerApiResult res = new ManagerApiResult();

    Manager manager = this.managerRepository.findOne(id);

    if(manager == null) {
        res.errors.add(String.format("Manager id \"%s\" do not exist", id));
        return res;
    }
    this.managerRepository.delete(manager);
    this.managerRepository.flush();
    return res;
}