Hey Everyone,
I've asked the question on the FluentNHibernate list already, so if
you're a member of both I apologize for the dupe.
I have an abstract base class that has 3 concrete implementations.
I've setup the mapping using Joined-SubClass and cannot get any of the
objects to persist. Whenever I do a Session.Save(obj) for an object of
one of the concrete types I get this exception:
NHibernate.PropertyAccessException: Exception occurred getter of
Domain.Entities.BaseEntity.Id
and the target exception is
System.Reflection.TargetException: Object does not match target type.
Which is weird because that same Id is being used for all the other
types that extend BaseEntity.
Here's a pseudo coded smaple:
// Classes
public abstract class BaseEntity
{
public virtual int Id { get; protected set; }
}
public class User : BaseEntity
{
public User()
{
Items = new List<Item>();
}
public virtual string Name { get; set; }
public virtual IList<Item> Items { get; set; }
}
public abstract class Item : BaseEntity
{
public virtual string Name { get; set; }
public virtual User User { get; set; }
}
And here are the maps. I used FluentNH but I checked the mapping
files that were created and everything looks correct.
public class UserMap : ClassMap<User>
{
public UserMap()
{
Id(x => x.Id).GeneratedBy.Native();
Map(x => x.Name);
HasMany(x => x.Items).Cascade.AllDeleteOrphan();
}
}
public class ItemMap : ClassMap<Item>
{
public ItemMap()
{
Id(x => x.Id).ColumnName("ItemId").GeneratedBy.Native();
Map(x => x.IsActive);
References(x => x.User);
JoinedSubClass<Item_A>("ItemId", sub => sub.Map(x =>
x.A_property));
JoinedSubClass<Item_B>("ItemId", sub => sub.Map(x =>
x.B_property));
JoinedSubClass<Item_C>("ItemId", sub => sub.Map(x =>
x.C_property));
}
}
Many thanks,
Rob
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