One2One Uni-directional Problem

[S Subbu]

Hi , I am Using JPA Annotation .

My Problem is i associate One2One Uni - directional Relation. My Actual Problem is

In Table1

@Entity
public class Table1{

            @Id
            private Integer id;

           @OneToOne(cascade=CascadeType.ALL,fetch=FetchType.LAZY)
           @PrimaryKeyJoinColumn
           private Table2 mappingEntity;

          gettter and setter...........

}

@Entity
public class Table2{

            @Id
            private Integer id;

           private String   name;

           gettter and setter...........



}

Insert Code

......Getting Session Object 

Table1 t1 = new Table1();
t1.setId(101);

Table2 t2 = new Table2();
t2.setName("SomeName");

t1.setMappingEntity(t2);

session.save(t1);

But When was insert Record , i got exception like assign value to id in com.entity.Table2 before calling save()



I dont want to assign id value , it will get From Table1 Id value . What i have to do for this.


Thanks

[Prabaharan Gopalan]

The id in Table2 is the primary key for table2. Unless you have a generation strategy specified for that Id, you'd have to manually set the id.