Hi,
I figured this out with some help from the persistence-glassfish folks (who
can make JPA do back flips, and are terrific helpers!)
Here's the solution, in case anyone's interested:
@ManyToMany
@JoinTable(
name="parent_child_category",
[EMAIL PROTECTED](name="child_id", referencedColumnName="id"),
[EMAIL PROTECTED](name="parent_id",
referencedColumnName="id")
)
private List<ToyCategory> parentCategories = new
ArrayList<ToyCategory>();
@ManyToMany(mappedBy = "parentCategories")
private List<ToyCategory> childCategories = new
ArrayList<ToyCategory>();
Now my categories can have multiple parents. Sweet!
Cheers,
Greg
gederer wrote:
>
> Hi,
>
> This is really a JPA question. But, I think someone around here might have
> a quick, simple answer.
>
> I have a Category class. According to my model, a Category can have many
> parent Categorys and many child Categorys. I'm having trouble getting the
> (JPA) annotations right for this relationship. I'm sure that this must be
> trivially easy.
>
> Does anyone know the correct way to do this?
>
> Thanks!
>
> Greg
>
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