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Re: [eclipselink-users] Entity relationship issue
|
It doesn't look like your relationship is defined in both entities. In
JPA you always need to make sure you do this. You need to have the
@ManyToOne annotation back in your CpMsg entity.
Check: http://en.wikibooks.org/wiki/Java_Persistence/OneToMany
for more info.
./tch
On Tue, Dec 2, 2008 at 6:20 PM, khaskett <khaskett@xxxxxxxxxxx> wrote:
>
> I am having an issue with creating a relationship between 2 entities, where
> the parent entity was created from a Stored Procedure. When I try to use the
> @OneToMany annotation it tries to join the two entities.
>
> @Entity
> public class CpUser extends BaseDomain {
>
> // Attributes
> @Id
> @Column(name = "paramUserID")
> private String userId;
>
> @Column(name = "paramInitials")
> private String initials;
>
> @Column(name = "paramFirstName")
> private String firstName;
>
> @Column(name = "paramLastName")
> private String lastName;
>
> .....
>
> /*
> * List of user messages
> */
> private Set<CpMsg> messages = new HashSet<CpMsg>(0);
>
> .....
> @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy =
> "userId")
> public Set<CpMsg> getMessages() {
> return messages;
> }
> } // End CpUser
>
> @Entity
> @Table(name = "CP_MSG")
> public class CpMsg extends BaseDomain {
>
> // Fields
> @Id
> @GeneratedValue(strategy = GenerationType.IDENTITY)
> @Column(name = "MSG_ID", unique = true, nullable = false, precision = 11,
> scale = 0)
> private Long msgId;
> @Column(name = "MSG_TEXT", nullable = false)
> private String msgText;
>
> private CpUser cpUser;
> ....
> public CpUser getCpUser() {
> return this.cpUser;
> }
> } //End CpMsg
>
> I removed some fields for brevity.
> When I try and get the messages for that user by calling getMessages() I get
> this in the logs -
> Call: SELECT t1.MSG_ID, t1.MSG_TEXT, t1.USER_ID FROM CPUSER_CP_MSG t0,
> CP_MSG t1 WHERE ((t0.CpUser_paramUserID = ?) AND (t1.MSG_ID =
> t0.messages_MSG_ID))
> bind => [USER123]
>
> And the error is that CPUSER_CP_MSG doesnt exist, which is correct.
>
> I guess I assumed it would just do a select on the child table passing in
> the value from the parent.
>
> Thanks in advance
>
> --
> View this message in context: http://www.nabble.com/Entity-relationship-issue-tp20803337p20803337.html
> Sent from the EclipseLink - Users mailing list archive at Nabble.com.
>
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>