[fluent-nhib] List<>.Remove() won't delete on Many-To-Many

[Corey Coogan]

I can't figure out what's wrong here.  I've got a Many To Many between
2 classes with an association class in the middle.  When I remove the
association class from the list and save, it's still there.

It would seem to be a cascade issue, but these should be right.  I can
add with no problem, just not delete.  I'm trying to delete form the
Customer class right now.

I am following the config from this post,
http://www.aaronstannard.com/post/2010/12/24/fluent-nhibernate-bidirectional-many-to-many.aspx,
which talks about my exact situation.

Classes:
--------------

    public class Customer
    {
          protected virtual IList<CustomerCarrier> _carriers { get;
set; }

        public virtual void AddCarrier(Carrier carrier)
        {
            var cc = new CustomerCarrier()
            {
                Customer = this,
                Carrier = carrier
            };
            this._carriers.Add(cc);
        }

        public virtual void RemoveCarrier(Carrier carrier)
        {
            var customerCarrier = _carriers.FirstOrDefault(x =>
x.Carrier == carrier);

            if (customerCarrier != null)
            {
                _carriers.Remove(customerCarrier);
            }
        }

        public virtual ReadOnlyCollection<Carrier> Carriers
        {
            get
            {
                return new ReadOnlyCollection<Carrier>(
    _carriers.Select(x => x.Carrier).ToList());

            }
        }
    }

    public class Carrier
    {
    protected virtual IList<CarrierSetting> _carrierSettings { get;
set; }

    public virtual ReadOnlyCollection<Customer> Customers
        {
            get
            {
                return new ReadOnlyCollection<Customer>(
                    _customerCarriers.Select(x => x.Customer).ToList()
                    );
            }
        }

        public virtual void AddCustomer(Customer customer)
        {
            var customerCarrier = new CustomerCarrier()
            {
                Customer = customer,
                Carrier = this
            };
            _customerCarriers.Add(customerCarrier);
        }

        public virtual void RemoveCustomer(Customer customer)
        {
            var customerCarrier = _customerCarriers.Where(x =>
x.Customer == customer)
                .FirstOrDefault();
            if (customerCarrier != null)
            {
                _customerCarriers.Remove(customerCarrier);
            }

        }

     }

    public partial class CustomerCarrier : TrackableEntity {
            public CustomerCarrier() { }
            public virtual int CustomerCarrierID { get; protected
set; }
            public virtual Customer Customer { get; set; }
            public virtual Carrier Carrier { get; set; }
        }

Here's the relevant mapping for these classes:

CustomerMap

     HasMany<CustomerCarrier>(
                        Reveal.Member<Customer>("_carriers")
                    )
                    .Cascade.AllDeleteOrphan()
                    .Fetch.Join()
                    .Inverse()
                    .KeyColumn("CustomerID")
                    ;

CarrierMap

    HasMany<CustomerCarrier>(
                       Reveal.Member<Carrier>("_customerCarriers")
                   )
                   .Cascade.AllDeleteOrphan()
                   .Fetch.Join()
                   .Inverse()
                   .KeyColumn("CarrierID")
                   ;

CustomerCarrierMap

    References(x => x.Customer)
                    .Not.Nullable()
                    .Cascade.SaveUpdate()
                    .Column("CustomerID")
                    ;
                References(x => x.Carrier)
                    .Not.Nullable()
                    .Cascade.SaveUpdate()
                    .Column("CarrierID")
                    ;

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