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Asked: 2026-05-21T16:27:05+00:00

I have the following DB schema: Users -Id (uniqueidentifier) -FirstName -LastName -Email AuthProviders -Id

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I have the following DB schema:

Users
-Id (uniqueidentifier)
-FirstName
-LastName
-Email

AuthProviders
-Id (smallint)
-Name

UserAuthProviders
-Id (uniqueidentifier)
-User (uniqueidentifier, FK)
-AuthProvider (smallint, FK)
-Identity (nvarchar)

I need to map all AuthProviders to the User object. I started with an idbag, but it looks like that only allows me to have an Id, User relationship, and AuthProvider relationship. I need to be able to include the Identity as well.

What else can I use to map it?

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1 Answer

  1. Editorial Team

    You need to use a many-to-one and a one-to-many, which ends up with 3 classes instead of two. You can eliminate the joining class from your public API, but you’ll still have to deal with it in the POCO class internals.

    A more complete answer can be found here:

    NHibernate many-to-many – how to retrieve property from join table and associate it with a child?

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