Or perhaps use <join> if it is reasonable that tables A and B end up in the same class.
/Oskar 2009/4/26 Thomas Koch <[email protected]> > > Hi Gustavo - thank you for your reply. :-) > > I have investigated the one-to-one mapping tag, but from what I can > understand the parent class "A" would have to slave its id property to > its child class "B" and I do not want that. > > Reading this link I got an idea: > > http://sdesmedt.wordpress.com/2006/07/24/nhibernate-part-3-mapping-techniques-for-aggregation-one-to-one-mapping/ > > In it Serge suggests mapping this relationship as one-to-many > association where the "B" entity is reduced to a component. Currently > that seems to be the most promising path. Either that or I'll have to > convince the rest of the team to add a propery "Id" column to the "B" > table. > > Thomas > > > > On 25 Apr., 23:07, Gustavo Ringel <[email protected]> wrote: > > I never used one-to-one relations, but it seems to be a case for this > right? > > > > Gustavo. > > > > On Sat, Apr 25, 2009 at 11:49 PM, Thomas Koch <[email protected]> wrote: > > > > > Hi - I have a "funny" association between two tables in a legacy > > > database we are moving to NHibernate: > > > > > A > > > Id:int > > > ... > > > > > B: > > > AId:int > > > ... > > > > > What it says is that the primary key of B is both primary key of B and > > > a foreign key to A, thus sharing the same values as A. > > > B is not required thus I guess you would call it a 0-1. > > > > > I cannot get my head around mapping this. If only B had an extra Id > > > column for the primary key, it would be easy enough. > > > > > Any suggestions? > > > > > Regards > > > Thomas Koch > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nhusers?hl=en -~----------~----~----~----~------~----~------~--~---
