PUT creates new records for @OneToOne association [DATAREST-1428]

Carlos Guzman opened DATAREST-1428 and commented

Let's say these are the entities and repository configurations:

@Entity
class Customer {
 @Id @GeneratedValue
 Long id;
 String name;
 @OneToOne(cascade = CascadeType.ALL)
 Info info;
}
@Entity
class Info {
 @Id @GeneratedValue
 Long id;
 String theInfo;
}
@RepositoryRestResource
interface CustomerRepository extends CrudRepository<Customer, Long> {
}

Nothing complex here. *Info* entity needs to be embedded in Costumer and persisted together. Only *Costumer* repository is exposed/created.

After creating a *Costumer* with POST, the records are stored as expected:

{
   "name": "John",
   "info": {
      "theInfo": "the info here"
   }
}

Customer table:

ID	NAME	INFO_ID
1	John	2

Info table:

ID	THE_INFO
2	the info here

 

But when an update is made to *Costumer*, a new record is created for *Info* and the new ID assigned to *Costumer*:

{
   "name": "John Doe",
   "info": {
      "theInfo": "updated info"
   }
}

Customer table:

ID	NAME	INFO_ID
1	John Doe	3

Info table:

ID	THE_INFO
2	the info here
3	updated info

Which is incorrect. A duplicated record is created in the *Info* table.
I'm expecting the same *Info* record and only the data being updated.
Something like this:

Customer table:

ID	NAME	INFO_ID
1	John Doe	2

Info table:

ID	THE_INFO
2	updated info

The sample project is in https://github.com/cguZZman/put-issue-spring-data-rest.git

Also, I have the fix ready if the bug is confirmed

---

Affects: 3.1.10 (Lovelace SR10)

Reference URL: https://github.com/cguZZman/put-issue-spring-data-rest.git