Best way to instantiate objects in one to one mapping.

Question

Hi,
I have two objects with this basic definition:
@Entity
@Table(name="siteuser")
public class SiteUser {
     @Id
     @GeneratedValue(strategy=TABLE, generator = "UserAndSiteGen")
     @TableGenerator(name="UserAndSiteGen", table = "userandsitegen")
     long id;
@OneToOne(cascade=ALL)
     UserPointSummary pointSummary;
@Entity
@Table(name="userpointsummary")
public class UserPointSummary {
     @Id
     @Column(name = "USERID", insertable=false, updatable=false)
     long userID;
     @OneToOne
     @JoinColumn(name="USERID")
     SiteUser user;
Since the UserID is generated but is the primary key of the summary object is it possible for me to create the userpointtransaction for a user in a single transaction? If so how?
Even doing it in two separate transactions it doesn't seem to work. I tried having a constructor:
     public UserPointSummary(SiteUser user)
          this.user = user;
and code:
     user.setPointSummary(new UserPointSummary(user));
     service.persistSiteUser(user);
But I keep getting an error when trying to insert the UserPointSummary row that UserID cannot be null...
Please let me know if you have suggestions on the right way to approach this.
Thanks.

Answer 1

I think the issue was just that I didn't have one of the two set the mappedBy attribute. Now things seem to be working.