Fluent NHibernate automap a HasManyToMany using a generic type
- by zulkamal
I have a bunch of domain entities that can be keyword tagged (a Tag is also an entity.)
I want to do a normal many-to-many (Tag - TagReview <- Review) table relationship
but I don't want to have to create a new concrete relationship on both the Entity and Tag every single time I add a new entity.
I was hoping to do a generic based Tag and do this:
// Tag
public class Tag<T>
{
public virtual int Id { get; private set; }
public virtual string Name { get; set; }
public virtual IList<T> Entities { get; set; }
public Tag()
{
Entities = new List<T>();
}
}
// Review
public class Review
{
public virtual string Id { get; private set; }
public virtual string Title { get; set; }
public virtual string Content { get; set; }
public virtual IList<Tag<Review>> Tags { get; set; }
public Review()
{
Tags = new List<Tag<Review>>();
}
}
Unfortunately I get an exception:
----> System.ArgumentException : Cannot create an instance of FluentNHibernate.Automapping.AutoMapping`1[Example.Entities.Tag`1[T]] because Type.ContainsGenericParameters is true.
I anticipate there will be maybe 5-10 entities so mapping normally would be ok
but is there a way to do something like this?
