IdMap
On Wed, Apr 20, 2011 at 9:02 AM, Øyvind <[email protected]> wrote:
> Hello,
>
> I've got a user and a place entity, and a relationship mapped between
> them using a 'UserPlace' entity (A user can belong to many places).
> The mapping, with FluentNH, is below. This works fine, but I've
> noticed that every time I modify a User's UserPlace (setting a place
> as default or selected) the entire collection of UserPlace is first
> deleted from the database, and then reinserted. I assume it's because
> NHibernate doesn't know enough about what distinguishes one row from
> another, so how can I change my mapping to prevent a complete deletion
> and re-insertion of all rows?
>
> public class UserMap : ClassMap<User>
> {
> HasMany(x => x.Neighbourhood)
> .Component(c =>
> {
> c.Map(x => x.IsDefault).Not.Nullable();
> c.Map(x => x.Selected).Not.Nullable().Default("0");
> c.References(x => x.Place).Fetch.Join();
> }
> ).Not.LazyLoad().Cascade.SaveUpdate();
> }
>
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>
--
Fabio Maulo
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