Hi,

I've a problem with table-per-concrete-class mapping and NHibernate 1.0.3.
I've a IMaterialiContainer interface and a Prodotto and Film classes that derive from the original interface. I've mapped the Prodotto and Film classes (all works when I use mapping for the two concrete classes) but when I try to do a query like this :

from MyApp.IMaterialiContainer as mc where :Materiale in elements(mc.Materiali)

I received this exception :

undefined alias or unknown mapping: Nitrotech [from MyApp.IMaterialiContainer as mc where :Materiale in elements(mc.Materiali)]


I can't understand why...It says to me that the super-class (my IMaterialiContainer interface) si not mapped, but in the sample on the documentation the IPayment interface is not declared in any mapping file....

Thanks!!!

Table per concrete class has limitations in regard to querying...There's a chart in section 9.2. Limitations in the documentation at http://www.hibernate.org/hib_docs/v3/re ... ml_single/ detailing these limitations.
I suspect you are running up against the lack of support for polymorphic joins in this strategy since you are using the 'in elements' clause.
That's my guess...
MIKE