Spring Boot OneToOne referencedColumnName not applied - spring-data-jpa

Question

I have 2 tables:
CREATE TABLE user_profile (
id VARCHAR(36) PRIMARY KEY,
first_name VARCHAR(255) NOT NULL
);
CREATE TABLE user_phone (
id VARCHAR(36) PRIMARY KEY,
user_id VARCHAR(36),
phone_number VARCHAR(255) NOT NULL,
code VARCHAR(10) NOT NULL,
validated_at DATETIME NULL
);
ALTER TABLE user_phone ADD CONSTRAINT user_phone_FK FOREIGN KEY (user_id) REFERENCES user_profile(id) ON DELETE CASCADE;
so child has ID reference to his parent, because if I will delete parent I want this child to be deleted also.
In User class I have:
#Entity
#Table(name = "user_profile")
public class UserProfile {
...
#OneToOne
#JoinColumn(name = "id", referencedColumnName = "user_id")
private UserPhone phoneNumber;
but then when I run it I see in JPA logs:
from
user_profile userprofil0_
where
userprofil0_.id=?
why it looks there by ID ? should be by user_id field. Or I missunderstood smth there..
thanks!

Answer 1

One day later and finally I found the solution.
Its pretty tricky in spring and not maybe so intuitive.
So - from user_phone table Ive removed additional ID column, and now user_id is there primary key, only 1 change in sql.
Then in spring:
in UserProfile:
#OneToOne(mappedBy = "userProfile", cascade = CascadeType.ALL)
#PrimaryKeyJoinColumn
private UserPhone userPhone;
and in UserPhone:
#Id
#Column(name = "user_id", nullable = false)
#Type(type = "uuid-char")
private UUID id;
#OneToOne(fetch = FetchType.LAZY)
#MapsId
#JoinColumn(name = "user_id")
private UserProfile userProfile;
#PrimaryKeyJoinColumn annotation indicates that the primary key of the UserProfile is used as the foreign key value for the associated UserPhone.