Setting CollectionTypeFactory must be done before adding mappings
assemblies.
Have a look at my following request:
https://groups.google.com/forum/?fromgroups#!topic/nhusers/BWjeHAiu4h4
On Wednesday, May 11, 2011 5:49:30 PM UTC+2, NeoDarque wrote:
>
> I'm looking into José Romaniello's Net4Collections class to use the
> BCL HashSet instead of the iesi HashedSet, but I'm getting an
> exception when my model looks like this:
>
> public class Survey
> {
> public virtual string Name { get; set; }
> public virtual ISet<Question> Questions { get; set; }
>
> public Survey() {
> this.Questions = new HashSet<Question>();
> }
> }
>
> Whenever I try to save a new Survey with a populated Questions
> collection I get an exception saying:
> {"Unable to cast object of type
> 'NHibernate.Collection.Generic.PersistentGenericSet`1[Demo.Models.Question]'
>
> to type 'System.Collections.Generic.ISet`1[Demo.Models.Question]'."}
>
> But if I expose my Questions property like "ICollection<Question>" it
> works fine.
>
> And yes, I have
> "configure.Properties[NHibernate.Cfg.Environment.CollectionTypeFactoryClass]
>
> = typeof(Net4CollectionTypeFactory).AssemblyQualifiedName;".
>
> This is with the latest alpha of NHibernate 3.2.
>
> I have no problems sticking with ICollection<> but just wondering if
> I'm missing something to get it to work.
>
> Cheers!
>
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