Where to raise persistence-dependent domain events - service, repository, or UI?

Question

My ASP.NET MVC3 / NHibernate application has a requirement to fire off and handle a variety of events related to my domain objects. For example, an Order object mig

Answer 1

Domain Events should be raised in... the Domain. That's why they are Domain Events.

public void ExecuteCommand(MakeCustomerGoldCommand command)
{
    if (ValidateCommand(command) == ValidationResult.OK)
    {
        Customer item = CustomerRepository.GetById(command.CustomerId);
        item.Status = CustomerStatus.Gold;
        CustomerRepository.Update(item);
    }
}

(and then in the Customer class, the following):

public CustomerStatus Status
{
    ....
    set
    {
        if (_status != value)
        {
            _status = value;
            switch(_status)
            {
                case CustomerStatus.Gold:
                    DomainEvents.Raise(CustomerIsMadeGold(this));
                    break;
                ...
            }
        }
    }

The Raise method will store the event in the Event Store. It may also execute locally-registered event handlers.