Can someone please answer it. I appreciate it.

On Sep 14, 5:09 pm, Arash <aras...@gmail.com> wrote:
> I have a class which has a collection of itself as its children. It is
> mapped as :
>
> @Persistent
>     private Group parent;
> @Persistent(mappedBy= "parent")
>     private List<Group> children;
>
> The problem is I cannot insert the root object. The call to
> makePersistent comes back successfully, but the entity is not in the
> database.  I guess this object with this mapping can not have null
> parents. Is there anyway I can make the parent nullable?
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