Hi Sylvain,

Yes, then class A instead has a reference to a class QualifiedARef (or a collection of these). QualifiedARef holds the relation info and a reference to the target A. If bidirectionality is important, it can hold a reference to both of the As in the relation.

Phil

[EMAIL PROTECTED] wrote:
Hi Phil,

Thank you for your answer.
Is it also possible if you qualified this self reference (add information about relation)?

For example if class A have a reference to another instance of class A and this reference has information like reference_name or something like that.

Regards
Sylvain

-----Message d'origine-----
De: Phil Warrick [mailto:[EMAIL PROTECTED]]
Date: lundi, 16. d�cembre 2002 15:14
�: OJB Users List
Objet: Re: OJB and recursive relationship


Hi Sylvain,

OJB handles self references fine. In other words class A can have a reference to another instance of class A or a collection of class As. You may need to make these proxies if the graph is very large and you need to control the hits to the db.

Phil

[EMAIL PROTECTED] wrote:

Hello,

I have a situation with recursive relationship:

I have a class Software that represents the softwares that could be installed on my machine. Some of these softwares must have other softwares installed before to be able to be installed.
So, I have a recurvive relationship here.

How do you implement this relationship with OJB?

Thank you
Sylvain

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