Problem with @OneToOne relationship in EJB 3.0

Question

Hi,
I'm new to EJB 3.0. If i done any stupid thing please forgive me. Here is my doubt.
I would like to use one-to-one relationship between two entities like USER and ADDRESS.
I just did like this (the below code)to enable the relationship between these two entities.
@Entity
@Table(name="internalUser")
public class InternalUser implements Serializable{
.........//field entries of the User
private Address userAddress;// Field for address entity.
.......//setters and getters
@OneToOne(cascade={CascadeType.ALL})
@JoinColumn(name="id",table="user_address")
public Address getUserAddress() {
return userAddress;
public void setUserAddress(Address userAddress) {
this.userAddress = userAddress;
} and Here is the Address EntityBean
@Table(name="user_address")
@Entity
public class Address implements Serializable{
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
//setters and getters..
}Entire Ejb application is deployed success fully. But when i try to add a User entry along with address, it is not able to save the address entry, but able to save the User entry correctly. And also it is not able to build a relationship with Address table.
Here is my code which i write to save the User
InternalUser user=new InternalUser();
user.setName("Bharat");
user.setSignnum("bhak");
user.setDescription("Patel");
Address address= new Address();
address.setAreaCode("500032");
address.setState("AP");
address.setStreet("Prashanthi Nagar");
user.setUserAddress(address);
remote.saveUser(user); Here remote is SessionBeanInterface
I'm using Postgres as a database.
Please help me in this. What necessary steps need to follow in order to use @OneToOne relationship
Edited by: chanti12345 on Apr 29, 2009 12:09 AM
Edited by: chanti12345 on Apr 29, 2009 12:11 AM

Answer 1

hi i solved this query.
I made few changes in Both the entity classes. Here is the code for the Entites USER and ADDRESS
@Entity
@Table(name="internalUser")
public class InternalUser implements Serializable{
.......//field entries
private Address userAddress;//address entry
......//setters and getters
@OneToOne(cascade={CascadeType.ALL})
public Address getUserAddress() {
     return userAddress;
public void setUserAddress(Address userAddress) {
     this.userAddress = userAddress;
@Table(name="user_address")
@Entity
public class Address implements Serializable{
....//fields and setters and getters
}see the difference in the code . after making this change i'm able to save the User with relation ship with Address. No changes needed in client code.
Thanks a lot to every one.
Edited by: chanti12345 on Apr 29, 2009 2:22 AM