This happens if you have not create a hilo table, or have created the hilo table but it is not seeded it with an initial value.
NHibernate is complaining (in a non-obvious way) that it couldn't generate the next hi value. On May 30, 5:45 am, Paul Batum <paul.ba...@gmail.com> wrote: > Maybe someone that has used hilo will pipe up with a suggestion, but in the > meantime I suggest you ask on the nhibernate > users<http://groups.google.com/group/nhusers/> mailing > list. Your question is more about NH usage than the FNH mappings. > > > > On Sat, May 29, 2010 at 2:23 AM, Sosh <bgs...@gmail.com> wrote: > > Hi, > > > I've been building an app with Native Ids initially, and am now > > switching to HiLos. > > > However, I've come across a strange problem, and don't understand > > what's happening. > > > With native ids everything is working fine. However, if I one of the > > entity mappings to HiLo, new objects will not persist in the database > > (using SaveOrUpdate). I don't receive any errors and no exception is > > thrown - everything acts like it's working, but no new db records. > > > I'm just using default hilo settings. I'm recreating the DB with > > SchemaUpdate/Export beforehand, and the Hibernate_Unique_Key table > > with the next_hi column is being created correctly. > > > Here's the original mapping line that works: > > > Id(c => c.Id).GeneratedBy.Native(); > > > And the one that breaks everything: > > > Id(c => c.Id).GeneratedBy.HiLo("100"); > > > If I try to SaveOrUpdate() a new object, all I get in the sql logs is: > > > 2010-05-28 18:15:09,703 DEBUG 4 NHibernate.SQL - Reading high > > value:select next_hi from hibernate_unique_key for update > > 2010-05-28 18:15:09,718 DEBUG 4 NHibernate.SQL - Updating high > > value:update hibernate_unique_key set next_hi = ?p0 where next_hi = ? > > p1;?p0 = 4, ?p1 = 3 > > > And in the nhibernate log: > > > 2010-05-28 18:18:33,734 DEBUG 8 NHibernate.Impl.SessionImpl - [session- > > id=a948d92d-3edc-4f15-aa5a-3b7d461cb455] opened session at timestamp: > > 634106675137, for session factory: [/046fd6ce97f547aeb8a9edb8ddf6e2ef] > > 2010-05-28 18:18:33,734 DEBUG 8 NHibernate.Engine.IdentifierValue - > > unsaved-value: 0 > > 2010-05-28 18:18:33,734 DEBUG 8 > > NHibernate.Event.Default.AbstractSaveEventListener - transient > > instance of: xxxx.BusinessEvent > > 2010-05-28 18:18:33,734 DEBUG 8 > > NHibernate.Event.Default.DefaultSaveOrUpdateEventListener - saving > > transient instance > > 2010-05-28 18:18:33,734 DEBUG 8 > > NHibernate.Event.Default.AbstractSaveEventListener - generated > > identifier: 304, using strategy: NHibernate.Id.TableHiLoGenerator > > 2010-05-28 18:18:33,734 DEBUG 8 > > NHibernate.Event.Default.AbstractSaveEventListener - saving > > [xxxx.BusinessEvent#304] > > 2010-05-28 18:18:33,734 DEBUG 8 NHibernate.Impl.SessionImpl - [session- > > id=a948d92d-3edc-4f15-aa5a-3b7d461cb455] running ISession.Dispose() > > 2010-05-28 18:18:33,734 DEBUG 8 NHibernate.Impl.SessionImpl - [session- > > id=a948d92d-3edc-4f15-aa5a-3b7d461cb455] executing real Dispose(True) > > 2010-05-28 18:18:33,734 DEBUG 8 NHibernate.Impl.SessionImpl - closing > > session > > 2010-05-28 18:18:33,734 DEBUG 8 NHibernate.AdoNet.AbstractBatcher - > > running BatcherImpl.Dispose(true) > > > Any ideas what the problem might be? Or what to check? > > > Thanks > > > -- > > You received this message because you are subscribed to the Google Groups > > "Fluent NHibernate" group. > > To post to this group, send email to fluent-nhibern...@googlegroups.com. > > To unsubscribe from this group, send email to > > fluent-nhibernate+unsubscr...@googlegroups.com<fluent-nhibernate%2Bunsubscr > > i...@googlegroups.com> > > . > > For more options, visit this group at > >http://groups.google.com/group/fluent-nhibernate?hl=en. -- You received this message because you are subscribed to the Google Groups "Fluent NHibernate" group. To post to this group, send email to fluent-nhibern...@googlegroups.com. To unsubscribe from this group, send email to fluent-nhibernate+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/fluent-nhibernate?hl=en.
