[Mono-aspnet-list] FluentNHibernate InvalidCastException at creating SessionFactory

gajcz gajczewski at gmail.com
Fri Aug 26 11:01:56 EDT 2011

Ok, it seems I resolved this problem by myself. This is what I found (maybe
it will help someone):

Going deeper to NHibernate sources I noticed that only when
*setting.IsKeywordsImportEnabled* is set the crashing part is fired
There the SuppliedConnectionProviderConnectionHelper tries to cast some type
to DbConnection, this type is probably NpgsqlConnection class which doesn't
derive from DbConnection, however it implements IDbConnection.

How to disable IsKeywordImportEnabled?

sessionFactory = Fluently.Configure() 
                .Mappings(m => 
                *.ExposeConfiguration(c =>
                        c.SetProperty(Environment.Hbm2ddlKeyWords, "none");

Actually I don't know what this setting will cause, but retrieving and
inserting entities seem to work fine.

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