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merge_s.rottem
 Post subject: IUserType as meta-type in <any> mapping?
PostPosted: Mon Apr 10, 2006 10:59 am 
Expert
Expert

Joined: Tue Aug 23, 2005 5:52 am
Posts: 335
I recently read in the NHibernate documentation...

Quote:
In this case, a polymorphic association to IPayment is mapped using <any>.

<any name="Payment"
meta-type="class"
id-type="Int64">
<column name="PAYMENT_CLASS"/>
<column name="PAYMENT_ID"/>
</any>
It would be better if we defined an IUserType as the meta-type, to handle the mapping from type discriminator strings to IPayment subclass.


...but I can't find any literature on HOW to define the IUserType. Can anyone explain this in a little more detail?

Symon.
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Balagan
 Post subject:
PostPosted: Mon Apr 10, 2006 12:54 pm 
Beginner
Beginner

Joined: Wed Oct 05, 2005 5:35 am
Posts: 47
Location: France
Hi Symon,
Very often when I read your posts it seems you are working on similar things I work on. And it seems you are in France too - if you wish we could get together somehow to exchange experineces. You can drop me a line on alex_public2006 at yahoo.com.
Alex
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merge_s.rottem
 Post subject:
PostPosted: Sun Apr 16, 2006 6:42 pm 
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Expert

Joined: Tue Aug 23, 2005 5:52 am
Posts: 335
Can anyone help? The issue at hand is that I'm running into the problem described in the following thread, but I *still* haven't figured it out and all the replies I've seen on the subject have worked out to be a little cryptic and assume I have some knowledge which I patently seem to be mising:

http://forum.hibernate.org/viewtopic.php?t=952982

Is there anyone out there who can enlighten me on IUserType and how it can be implemented to solve the problem of persisting only the Type name rather than the fully qualified type name for <any> mappings as suggested in the documentation? Without this I have to manually enter the values into my mapping files which is truly nasty.

I figure this can't be *that* difficult to do, but I'm completely in the dark here.

Symon.
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