Mapping A Base Class With Generics

colinjack · **Joined:** Fri Sep 08, 2006 2:55 am **Posts:** 21

I'm using NHibernate 1.2.0.1001 and have a mapping issue.

I have an abstract baseclass MyBase<TMyType> and subclasses replace the type parameter MyType.

I thus have MyDerived<AnotherClass> and MySecondDerived<YetAnotherClass>. AnotherClass and YetAnotherClass share an interface ISharedInterface.

I want to map this as a class with subclasses and I've tried a mapping like this:

<class name="Domain.MyBase'1[ISharedInterface], Domain" table="ThrTable" lazy="false" polymorphism="explicit">

This doesn't work and I've found nothing about whether what I'm doing is possible so I really wondered if anyone had any ideas.

sergey · **Posted:** Sun Feb 04, 2007 6:16 am

No, this is currently not supported, there are many places in NHibernate that do not handle generic types correctly (mostly in the HQL parser).

colinjack · **Joined:** Fri Sep 08, 2006 2:55 am **Posts:** 21

Thanks for replying and answering my question, can I ask whether its something that is likely to be supported in the near future or is it quite far down the priority list?

sergey · **Posted:** Sun Feb 04, 2007 10:01 am

I haven't yet thought about what the future versions of NHibernate will or will not include, right now I am focused on finishing 1.2.0. Enter a JIRA issue about this and you will get informed eventually.

colinjack · **Joined:** Fri Sep 08, 2006 2:55 am **Posts:** 21

Will do thanks, and thanks for all your work on NHibernate.

dkehring · **Joined:** Mon Jul 07, 2008 8:03 pm **Posts:** 1

Has this issue / shortcoming ever been resolved?

wolli · **Posted:** Tue Jul 08, 2008 2:42 am

I think you're looking for that issue:

http://jira.nhibernate.org/browse/NH-960

Seems to be only a partial solution for generic collections.