How to map IDictionary in Fluent NHibernate

Question

I have an class with an IDictionary on it.

Answer 1

I have a working example, this should make it clear to you.

Classes:

public class Customer : Entity
{        
    public IDictionary FavouriteBooks { get; set; }
}

public class Book : Entity
{
    public string Name { get; set; }
}

And then the map:

HasManyToMany(x => x.FavouriteBooks)
            .Table("FavouriteBooks")                
            .ParentKeyColumn("CustomerID")
            .ChildKeyColumn("BookID")
            .AsMap("Nickname")                
            .Cascade.All();

Resulting xml:

Generated SQL:

create table "Customer" (
    "Id"  integer,
   "FirstName" TEXT,
   primary key ("Id")
)

create table FavouriteBooks (
    "CustomerID" INTEGER not null,
   "BookID" INTEGER not null,
   "Nickname" TEXT not null,
   primary key ("CustomerID", "Nickname")
)

create table "Book" (
    "Id"  integer,
   "Name" TEXT,
   primary key ("Id")
)