hi, Fabio

I have corrected my scenario like this:
mapper.Class<Activity>(map =>
                                       {
                                        map.Discriminator(dm =>
                                           {
 
dm.Column("DISCRIMINATOR_TYPE");
 
dm.Type(typeof(System.Int32));
                                               dm.NotNullable(true);
                                           });
                                       });
mapper.Subclass<FormActivity>(map=>map.DiscriminatorValue(ActivityType.Form ));

Now discriminator is not a Property anymore. But I get same error.

On May 4, 12:59 pm, Fabio Maulo <[email protected]> wrote:
> The discriminator *can't* be a property.
>
>
>
>
>
>
>
>
>
> On Wed, May 4, 2011 at 6:18 AM, Luka <[email protected]> wrote:
> > Hi,
> > I have this scenarion:
>
> > A table:
>
> > Activity
> > .Id : Guid
> > .Type: int
> > .Title: nvarchar(20)
> > ...
>
> > Classes
> > public class Activity: Entity
> > {
> >    public virtual ActivityType Type {get;set;}
> >    public virtual string Title {get;set;}
> > }
>
> > public class FormActivity: Activity
> > {
>
> > }
>
> > and a mapping:
> > mapper.Class<Activity>(map =>
> >                                       {
>
> > map.Discriminator(dm=>dm.Column("TYPE"));
> >                                       });
>
> > mapper.Subclass<FormActivity>(map=>map.DiscriminatorValue(ActivityType.Form 
> > ));
>
> > When building SessionFactory I get Exception
>
> > System.InvalidOperationException: Sequence contains more than one
> > matching element
> > It throws when get on this line:
>
> > mapper.Subclass<FormActivity>(map=>map.DiscriminatorValue(ActivityType.Form 
> > ));
>
> > what am I doing wrong?
>
> > --
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> --
> Fabio Maulo

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