Hi Charles & Fernando,
Carles Rico wrote:
> Hello,
>
> We are testing objectbridge, for we intend to use it in our aplication.
thanks, for your interest.
> We have some questions about
> the mapping associations. We need to express an association ( for
> instance 1:n or 1:1 ) between two fields which are not primary keys.
> Can I do this with ObjectBridge? If so, how?
Depends!
OJB automatically maps foreign keys (in the detail) on primary keys (in
the master table). OJB does not check if a field is a primary key in the
database. It is sufficient to declare it as PK in the xml repository.
So, if it is safe to use your non-PK column as a PK column (i.e. its
values are unique accross the table) it will be possible to use OJB for
this scenario.
Are you going to implement
> this in the future?
There have been no request in this direction until now. I don't think
that it will get high priority on the todo list as this situation
clearly violates basic ER design principles.
> In case there
> was need for it, we would be willing to help you with the implementation.
>
thanks for your offer to help! If you implement this kinf of thing I
will integrate it into the distribution,
thanks,
Thomas
> Best regards,
>
>
> Carles & Fernando.
>
>
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