I think I might have a solution actually but I'll ask on nhibernate's list anyway. Thanks for replying
On Aug 3, 10:15 pm, Paul Batum <[email protected]> wrote: > Since this is a question about mapping complex hierarchies and is not about > fluent nhibernate's behavior per se, I suggest you also ask on the > nhibernate mailing list. > > On Mon, Aug 3, 2009 at 6:23 PM, JamesSpibey <[email protected]> wrote: > > > Hi, > > > I'm trying to map quite a complex hierarchy and I was hoping someone > > here might be able to give me some guidance? I've tried to represent > > it below but note that I am not using the real class names to make it > > clearer. > > > Class Grandparent > > Property Parents As IList(Of Parent) > > End Class > > > Class Parent > > Property Children As IList(Of Child) > > Property Parent As GrandParent > > End Class > > > Class MustInherit Child > > Property GrandParent As GrandParent > > Property Parent As Parent > > End Class > > > Class Boy > > Inherits Child > > End Class > > > Class Girl > > Inherits Child > > End Class > > > OK, simple enough. This is mapped successfully using FNH, with the > > only complexity being that Boy and Girl are mapped using > > DiscriminateSubClassesOnColumn. > > > Having done all that, I now need to do something like the following > > > Class SpecialGrandparent > > Inherits Grandparent > > Public Property AdditionalInfo As String > > End Class > > > Class SpecialParent > > Inherits Parent > > Public Property AdditionalInfo As String > > End Class > > > Class SpecialChild > > Inherits Child > > Public Property AdditionalInfo As String > > End Class > > > The complexity comes from the fact that I need the SpecialGrandParent > > to look and behave like a normal GrandParent class, but also be able > > to access the 'AdditionalInfo' when needed. > > > So, I thought I'd solved this, and this is how I did it. (I'll just > > show the example for one class but you'll get the idea) > > > Public Interface IGrandParent > > Property Parents As IList(Of IParent) > > End Interface > > > Class Grandparent > > Implements IGrandParent > > Property Parents As IList(Of IParent) Implements > > IGrandParent.Parents > > End Class > > > Class SpecialGrandparent > > Implements IGrandParent > > > Private _innerGrandParent As IGrandParent = New GrandParent > > > Property Parents As IList(Of IParent) Implements > > IGrandParent.Parents > > Return _innerGrandParent.Parents > > End Property > > > Public Property AdditionalInfo As String > > End Class > > > This all works great but when I come to the mapping, I can't figure > > out what's best to do. The way I have it now is that the > > _innerGrandParent property is exposed as a public Property which I can > > then map using map.References(). This ensures that the > > _innerGrandParent field gets populated ok which is then used to proxy > > all the fields in the interface. > > > However, if I then write a query which uses SpecialGrandParent.Parents > > for example, I get an error because the Parents property hasn't been > > explicitly mapped (it's being proxied from the _innerGrandParent > > field). > > > Sorry for the long post but I'm so close to having this work, but yet > > so far! > > > Thanks > > > James --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Fluent NHibernate" 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/fluent-nhibernate?hl=en -~----------~----~----~----~------~----~------~--~---
