OneToOne « Association « JPA Q&A

1. Custom OneToOne Hibernate/JPA Association

I have a database that can have different types of relatinships based upon what data was updated during the last business transaction. An example would be in a policy writing ...

2. Secondarytables or OnetoOne associations?

Considering the following "model":

    Long: PK
    String: firstName
    String: lastName

    Long: PK
    String: moreInfo

3. Confusion over the Hibernate Bi-Direction OneToOne Association

Hi, I've just been reading Cameron McKenzie's Hibernate Made Easy (a great read, and hugely more entertaining than the very dry 'Hibernate in Action' book) but have hit a point of confusion that I'm hoping someone here could assist me with. When Cameron describes the uni-directional 1-to-1 mapping, I'm completely 'with' everything that is going on... The Exam class has-a ExamDetail ...

4. Overiding onetoone association

Hi, I have a parent class @MappedSuperclass public abstract class UserAssociated extends Persistant { @OneToOne(optional = false, cascade = CascadeType.ALL) @JoinColumn(name = "fk_user") private User user; .. } like this however in the child class, I need to over ride the defiantion @OneToOne(optional = false, cascade = CascadeType.ALL) to @ManyToOne(optional = false, cascade = CascadeType.ALL) is this possible.. I see similar ...

5. Auto saving OnetoOne association with annotations

@Entity @Table(name="TM_CUST") public class Member{ @GenericGenerator(name="generator", strategy="increment") @Id @GeneratedValue(generator="generator") @Column(name="CUSTNO") private int no; @OneToOne(mappedBy="member", cascade = CascadeType.ALL, fetch = FetchType.LAZY) ...