DiscriminateSubClassesOnColum<int>

On Thu, Jul 16, 2009 at 11:06 AM, Corey Coogan <[email protected]>wrote:

>
> Thanks James.  That won't compile.
>
> Argument '2': cannot convert from 'int' to
> 'S2sol.Rpo.Core.Domain.User.UserRole'
>
> I'm storing the string value of the enum in my User table.  I actually
> don't have a table designed yet, so I could make changes to my
> mappings if that would help.
>
>
>
> On Jul 16, 10:37 am, James Gregory <[email protected]> wrote:
> > This shouldn't be necessary, but try explicitly casting your enum to an
> int.
> > mapping.DiscriminateSubClassesOnColumn<UserRole>("Role",
> > (int)UserRole.Teacher)
> >
> > On Thu, Jul 16, 2009 at 4:31 PM, Corey Coogan <[email protected]>
> wrote:
> >
> > > I've searched everywhere and can't find an example that fits this. I
> > > really could use some help I keep getting the error:
> >
> > > "Could not format discriminator value to SQL string of entity..."
> >
> > > I have a User class with an enum property, UserRole, that I want to be
> > > my discriminator.
> >
> > > public abstract class User
> > > {
> > >   public string Name;
> > >   public virtual UserRole Role { get; protected set; }
> > > }
> >
> > > I then have a subclass for each role:
> >
> > > public class Teacher : User
> > >    {
> > >        public Teacher()
> > >        {
> > >            Role = UserRole.Teacher;
> > >        }
> >
> > >    }
> >
> > > I don't have any property on Teacher referring to Role because I don't
> > > need it.  This is different from what I've seen in other examples.
> > > Here's how I tried to map it on my User mapping:
> >
> > > mapping.DiscriminateSubClassesOnColumn<UserRole>("Role",
> > > UserRole.Teacher)
> > >                .SubClass<Teacher>(t =>
> > >                    {
> > >                        t.Map(x => x.Role);
> > >                    }
> > >            );
> >
> > > Here's my mapping output:
> >
> > > <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-
> > > access="">
> > >  <class name="S2sol.Rpo.Core.Domain.User.User, S2sol.Rpo.Core,
> > > Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" table="Users"
> > > xmlns="urn:nhibernate-mapping-2.2" discriminator-value="Teacher">
> > >    <id name="Id" type="Int32" unsaved-value="0" column="Id">
> > >      <generator class="identity" />
> > >    </id>
> > >    <discriminator column="Role"
> > > type="S2sol.Rpo.Core.Domain.User.UserRole, S2sol.Rpo.Core,
> > > Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
> > >    <property name="Email" type="String" unique-
> > > key="IX_Unique_EmailAddress">
> > >      <column name="Email" />
> > >    </property>
> > >    <property name="Role"
> > > type="FluentNHibernate.Mapping.GenericEnumMapper`1
> > > [[S2sol.Rpo.Core.Domain.User.UserRole, S2sol.Rpo.Core,
> > > Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]],
> > > FluentNHibernate, Version=0.1.0.0, Culture=neutral,
> > > PublicKeyToken=8aa435e3cb308880">
> > >      <column name="Role" />
> > >    </property>
> >
> > >    <property name="Name" type="String">
> > >      <column name="Name" />
> > >    </property>
> >
> > >    <subclass name="S2sol.Rpo.Core.Domain.User.Teacher,
> > > S2sol.Rpo.Core, Version=1.0.0.0, Culture=neutral,
> > > PublicKeyToken=null">
> > >      <property name="Role" type="S2sol.Rpo.Core.Domain.User.UserRole,
> > > S2sol.Rpo.Core, Version=1.0.0.0, Culture=neutral,
> > > PublicKeyToken=null">
> > >        <column name="Role" />
> > >      </property>
> > >    </subclass>
> > >  </class>
> > > </hibernate-mapping>
> >
>


-- 
- Hudson
http://www.bestguesstheory.com
http://twitter.com/HudsonAkridge

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