[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - FK - with Composite Key
avihaimar
do-not-reply at jboss.com
Wed Aug 20 16:24:31 EDT 2008
Hey,
I have a composite key to user table.
so i have class for the composite-id - UserID (first,second)
I have class XXX like this:
1- the same pk like user
2- many to one to user.
in the many-to-one to the user i use in joincolumns like this:
@JoinColumns( { @JoinColumn(name = "first",referencedColumnName="first", @JoinColumn(name = "second",referencedColumnName="second") })
i get an exception:
repeated column for column- first
The same clumns are the PK and FK.
Can you please advice.
@Entity
| public class Animal {
| @EmbeddedId PK pk = new PK();
| @ManyToOne
| @JoinColumns( { @JoinColumn(name = "first",referencedColumnName="first"), @JoinColumn(name = "second",referencedColumnName="second") })
| Owner owner;
| }
|
| @Entity
| public class Owner {
| @EmbeddedId PK pk = new PK();
| }
|
| public class PK implements Serializable{
| public String first;
| public String second;
| }
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