[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - Re: Two Entity has @OneToMany to the same Entity

[claudio_br]

You can resolve this with:

@Entity
  | public class A implements Serializable{
  | 
  |   @Id
  |   @GeneratedValue(strategy = GenerationType.IDENTITY)
  |   @Column(name="id_a")
  |   private int id;
  | 
  |   @OneToMany(mappedBy="a", fetch = FetchType.EAGER)
  |   @Cascade(CascadeType.ALL)
  |   private Set<C> cs = new HashSet<C>();
  |   
  |   .
  |   .
  |   .
  | 
  | }
  | 
  | @Entity
  | public class B implements Serializable{
  | 
  |   @Id
  |   @GeneratedValue(strategy = GenerationType.IDENTITY)
  |   @Column(name="id_b")
  |   private int id;
  | 
  |   @OneToMany(mappedBy="b", fetch = FetchType.EAGER)
  |   @Cascade(CascadeType.ALL)
  |   private Set<C> cs = new HashSet<C>();
  |   
  |   .
  |   .
  |   .
  | 
  | }
  | 
  | @Entity
  | public class C implements Serializable{
  | 	
  |   @ManyToOne(fetch = FetchType.EAGER)
  |   @JoinColumn(name="id_a", insertable=true, updatable=true)
  |   @Fetch(FetchMode.JOIN)
  |   @Cascade(CascadeType.SAVE_UPDATE)
  |   private A a;
  | 	
  |   @ManyToOne(fetch = FetchType.EAGER)
  |   @JoinColumn(name="id_b", insertable=true, updatable=true)
  |   @Fetch(FetchMode.JOIN)
  |   @Cascade(CascadeType.SAVE_UPDATE)
  |   private B b;
  | 	
  |   .
  |   .
  |   .
  | }

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