Question

I got in DB tables:
a) rb_user:
id_user, username, …
b) rb_user_password:
id, user_id, password.

How to annotate this in my java classes? I got:

@Entity
@Table(name="rb_users")
@SecondaryTable(name="rb_user_password")
public class User {

    @Id
    @Column(name="id_user")
    private int id;
    private String name;
    ...
    @Column(table="rb_user_password", name="password")
    private String password

I got these exception:

org.postgresql.util.PSQLException: ERROR: column user0_1_.id_user does
not exist

I know its because I got primary key “id_user”, and in my table with password column name is “user_id”

Answer 1

You can specifiy the name of the attribute in the secondary table with the pkJoinColumns attribute on @SecondaryTable.

@Entity
@Table(name="rb_users")
@SecondaryTable(name="rb_user_password", pkJoinColumns=@PrimaryKeyJoinColumn(name="user_id"))
public class User {
...
}