Hi,

I’m dealing with an exotic mapping I can’t get straight, and would
appreciate any help!

Consider the types Entity, Key, OtherEntity. I’m trying to map the
following scenario:

class Entity  {
  public IDictionary<Key, IList<OtherEntity>> Property { get; set; }
}

On the database, Entity, Key and OtherEntity each have a table, and a
fourth one does the ternary association. I’ve been using the following
mapping, but to no avail:

<map name="Property" cascade="all" lazy="true"
table="Entity_Key_OtherEntity">
  <key column="[Entity]" />
  <index-many-to-many column="[Key]" class=" Key" />
  <many-to-many column="[OtherEntity]" class="”OtherEntity”/>
</map>

When I try to update an instance of Entity, for some reason I get a
System.Reflection.TargetException. Do you have any idea about what I’m
missing?

Thanks!
-Duarte

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