Wt

Hi all,

I'm just starting to use Wt::Dbo, seeing if it will work in a project I'm involved in. I suspect I'm running up against a Dbo limitation, and I'd appreciate confirmation.

I have a class A which is recursive, through a class B; i.e. A has-an-optional B (implemented with hasMany because there's no one-to-one mapping type), and B has-many A. Effectively then, A can have zero or more A.

I create a transient A with no B children, then try to session~~add() it. When I flush() the resulting Dbo::ptr~~ I'm flushing because I want to log the id() - I get "A collection for 'A:0' is already in use. Reentrant [etc.]".

I'm not explicitly using a collection in a reentrant way, but is the recursive relationship causing Dbo to do so under the hood?

If so, is there some other way to accomplish the same thing? I know I can map the foreign key relationships as integers and manage them manually, but that's a bletcherous hack I'd rather avoid.

Thanks,

Sean