I've tried searching for information on this all over the place, but no one seems to quite cover this issue. I've reduced it to the following example.
This is my database :
create table ThingTypes
(
Id int,
Name varchar(50) not null
constraint PK_ThingTypes primary key (Id)
)
go
insert into ThingTypes(Id, Name) Values(1, 'ThingTypeOne')
insert into ThingTypes(Id, Name) Values(2, 'ThingTypeTwo')
create table Things
(
Id int identity,
Name varchar(50) not null,
ThingTypeId int not null
constraint PK_Things primary key (Id),
constraint FK_Things_ThingTypes foreign key (ThingTypeId) references ThingTypes(Id)
)
go
This is my model :
public abstract class Thing
{
public virtual int Id { get; set; }
public virtual string Name { get; set; }
}
public class ThingTypeOne : Thing { }
public class ThingTypeTwo : Thing { }
These are my mappings :
public class ThingOverride : IAutoMappingOverride<Thing>
{
public void Override(AutoMapping<Thing> mapping)
{
mapping.DiscriminateSubClassesOnColumn("ThingTypeId", 0);
}
}
public class ThingTypeOneMap : SubclassMap<ThingTypeOne>
{
public ThingTypeOneMap()
{
DiscriminatorValue(1);
}
}
public class ThingTypeTwoMap : SubclassMap<ThingTypeTwo>
{
public ThingTypeTwoMap()
{
DiscriminatorValue(2);
}
}
This is my ISessionFactory builder :
public static ISessionFactory GetFactory(string connectionString)
{
var configuration = new Configuration().AddProperties(new Dictionary<string, string>
{
{Environment.ConnectionDriver, typeof (SqlClientDriver).FullName},
{Environment.Dialect, typeof (MsSql2008Dialect).FullName},
{Environment.ConnectionProvider, typeof (DriverConnectionProvider).FullName},
{Environment.ConnectionString, connectionString},
{Environment.ShowSql, "true"},
{Environment.BatchSize, "100"},
{Environment.Isolation, "ReadCommitted"}
});
return Fluently.Configure(configuration)
.Mappings(m =>
{
m.FluentMappings.AddFromAssemblyOf<ThingTypeOneMap>();
m.AutoMappings.Add(AutoMap.AssemblyOf<Thing>(new DefaultAutomappingConfiguration())
.UseOverridesFromAssemblyOf<ThingOverride>()
);
})
.BuildSessionFactory();
}
And this is my failing test :
var sessionFactory = SessionFactoryBuilder.GetFactory(@"Data Source=localhost;Initial Catalog=ThingDatabase;Trusted_Connection=True;");
using (var session = sessionFactory.OpenSession())
{
session.BeginTransaction();
session.SaveOrUpdate(new ThingTypeOne
{
Name = "New Thing Type One"
});
session.Transaction.Commit();
}
It fails because it tries to insert into table "ThingTypeOne", which obviously doesn't exist. What do I need to do to get Fluent NHibernate to actually pay attention to the DiscriminateSubClassesOnColumn property that I've set?