I've asked similar questions in the past but haven't gotten any concrete
answers, and I'm hitting this over and over. I've tried a ton of different
options, and would be willing to create a separate solution to show others
what the problem is. Last time I asked it as doughnut classes and we got off
on a tangent and didn't solve it... so I'll avoid that this time.
Say I've got some Products, here's the four classes:
Product
ProductData
SpecialProduct : Product
SpecialProductData : ProductData
Product has a bag of ProductData
SpecialProduct has a bag of SpecialProductData
In the ProductData class I want a property called "Parent" that points to
the Product:
public virtual Product Parent {get;set;}
In the SpecialProductData class I want that same Parent property to instead
point to the SpecialProductData
public new virtual SpecialProduct Parent { get;set;}
I've tried defining the Parent property only in the base class and in both
classes. I've tried referencing the base class inside the inherited class
(get{ return base.Parent;}) instead of an automatic property. If I define it
only in the base class hbm and I load a SpecialProductData as ProductData it
will SOMETIMES error out as:
[NHibernate.PropertyAccessException] = {"Invalid Cast (check your mapping
for property type mismatches); setter of
Domain.Entities.SpecialProductData"}
But only sometimes! Seriously, I can run this same code 10 times and it will
error about 50% of the time. Driving me crazy. Any recommendations? Seems
that someone should have tackled an inheritance model like this one.
-Will
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