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 -~----------~----~----~----~------~----~------~--~---
