Java JPA-更新后OneToOne关系中断

Question

I have two tables (entities) named User and Profile in JPA what are syncing with MySQL database. Relation between them is OneToOne and bidirectional.

Here is how I made relation in model:

User:

@OneToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL, optional = false)
private Profile profile;

Profile:

@OneToOne(cascade = CascadeType.ALL, mappedBy = "profile", optional = false)
private User user;

I am building REST API and my problem is when I update profile by his ID from controller.

Before I update data in Profile I am able to getUser from this profile.

After I update data in Profile (by profileService.update(profile); ) I am not able to getUser for this profile.

Seems like the relation was broken.

In database there is no USER_ID on Profile table, just table 'User' have PROFILE_ID column.

Relation is working fine until I update it.

Answer 1

I fixed problem. It was caused by not setting User into Profile before updating, because 'dao.update()' just replacing data, not actually updating them.