I am spiking an example of CQRS as described by Udi. I am using rhino
service bus to process commands and then fire events in the domain.
I'm using a 'To Do List' for the spike
public void Consume(NewQuickTask message)
{
var task=
session.Get<User>(message.UserId).AddTask(message.Title);
domainEvents.Raise(new QuickTaskAdded{Task= task});
}
where domainEvents.Raise() will resolve all the Handles<T> from the
container and execute against each one. for example
class InsertNewQuickTaskIntoPersisentViewModel:
Handles<QuickTaskAdded>
{
public void Handle(QuickTaskAdded arg)
{
var pvm = mapper.Map<Task, ListOfItemsToDo>(arg.Task);
session.Save(pvm);
}
}
ListOfItemsToDo uses the assigned POID. this way it has the same id as
the Task in the domain. Task uses HiLo POID. I know I can call
session.Save(new Task()); to get the id, but I'm adding the Task to
the User to avoid the explicit call to session.
however I need the id from Task to insert new records into the PVM
(persistent view model). Is there another way to do this with HiLo? I
could probably use Guid.Comb, but I prefer numbers since they are
easier to read when logging and generating urls. I'm trying to avoid
database POID strategies for now.
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