Perfect.  Now I know.  I thought maybe there was some magic that could
be done with transactions or locking or guid.comb.  Thank you so much!

On Apr 27, 5:14 pm, Ramon Smits <[email protected]> wrote:
> It starts on the database level. How can one record be added when the
> other is not inserted yet? There is a chicken/egg problem here that
> NHibernate cannot solve for you. It would result in referential
> integrety problems when only one record would got inserted.
>
> On 27 apr, 22:56, nicklang <[email protected]> wrote:
>
>
>
>
>
> > Also, here are the Fluent NHibernate mappings:
>
> > public class Tester1Map : ClassMap<Tester1>
> > {
> >     public Tester1Map()
> >     {
> >         Id(x => x.Tester1Id)
> >             .GeneratedBy.GuidComb();
> >         Map(x => x.Name);
> >         References<Tester2>(x => x.Tester2)
> >             .Column("Tester2Id")
> >             .Cascade.SaveUpdate()
> >             .Not.Nullable();
> >     }
>
> > }
>
> > public class Tester2Map : ClassMap<Tester2>
> > {
> >     public Tester2Map()
> >     {
> >         Id(x => x.Tester2Id)
> >             .GeneratedBy.GuidComb();
> >         Map(x => x.Name);
> >         References<Tester1>(x => x.Tester1)
> >             .Column("Tester1Id")
> >             .Cascade.SaveUpdate()
> >             .Not.Nullable();
> >     }
>
> > }
>
> > Thanks for any inside you may have!
>
> > On Apr 27, 4:36 pm, nicklang <[email protected]> wrote:
>
> > > Hi,
>
> > > I have 2 entities, each referencing each other (cyclical dependency)
> > > via many-to-one relationships (I'm using FluentNHibernate so they are
> > > actually References calls)
>
> > > Now what I'm trying to do is:
>
> > > Tester1 tester1 = new Tester1();
> > > tester1.Name = "the tester1";
>
> > > Tester2 tester2 = new Tester2();
> > > tester2.Name = "the tester2";
>
> > > tester1.Tester2 = tester2;
> > > tester2.Tester1 = tester1;
>
> > > session.Save(tester1);
>
> > > The error I keep getting is on the last line:
>
> > > NHibernate.PropertyValueException: not-null property references a null
> > > or transient value DataTransfer.Tester.Tester2.
>
> > > I'm using Guid.Comb for my Ids.
>
> > > I thought NHibernate worked out these details - I'm clearly missing a
> > > big piece of the puzzle!
>
> > > Any ideas why this doesn't work?
>
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