[hibernate-issues] [Hibernate-JIRA] Commented: (ANN-381) Make possible to specify an @EmbeddedId's field in a @OneToMany's mappedBy property

[John Schneider (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/ANN-381?page=comments#action_23854 ] 

John Schneider commented on ANN-381:
------------------------------------

I strugled with this problem for hours before I found this post.  The workaround of creating delegate getters and setters for composite key fields is ugly.

> Make possible to specify an @EmbeddedId's field in a @OneToMany's mappedBy property
> -----------------------------------------------------------------------------------
>
>          Key: ANN-381
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-381
>      Project: Hibernate Annotations
>         Type: Improvement

>   Components: binder
>  Environment: Hibernate's annotations packaged in JBoss EJB 3.0 RC8- FD
> Microsoft SQL Server 2000
>     Reporter: Pierre Fourès
>      Fix For: 3.2.0

>
>
> As described in hibernate forum (http://forum.hibernate.org/viewtopic.php?t=960763) and discussed with Emmanuel, it would be very nice to be able to specify in an @OneToMany's mappedBy property the field of an @EmbeddedId.
> For example, i would like to be able run this example :
> @Entity
> public class Card {
>    @OneToMany(cascade=CascadeType.ALL, fetch=FetchType.EAGER, mappedBy="primaryKey.card")
>    private Set<CardField> fields; 
> }
> @Entity
> public class CardField implements Field {
>    @EmbeddedId
>    private PrimaryKey primaryKey = new PrimaryKey();
>    
>    @Embeddable
>    class PrimaryKey implements Serializable {
>       @ManyToOne(optional = false)
>       private Card card;
>       
>       @ManyToOne(optional = false)
>       private Key key;
>    }
> }
> @Entity
> public class Key {}

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