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On Wed, Mar 17, 2010 at 4:07 PM, Jan Limpens <[email protected]> wrote:

> On Mon, Mar 15, 2010 at 11:33 PM, Jan Limpens <[email protected]>
> wrote:
>
> >> 1/ bus.DelaySend
> >
> > how could I cancel this, in case the payment arrives?
> I could of course, upon state change delaysend a
> CheckIfIsStillInStateMessage, that would either be answered with a
> AbendondedWarningMessage or nothing. Would this be the way to go? (A
> bit non-obvious in my eyes)
>
> Not following what you are doing here


> >> 3/ A saga is just a way to encapsulate a state machine, it is pretty
> >> common to have the current state flag in the saga state.
>
> Ah, I see so the saga would actually be _the_ place where the state is
> saved.
>

Yes


> But this would somewhat transgress the borders between domain and
> services, wouldn't it?
>

No. Saga is for maintaining state over multiple messages easily.
Otherwise you have to roll your own state maintainence.


> If my order object is an entity (persited via nhib), the saga would
> have to become its component and subsequently have to move into the
> domain (not doing domain like things, being persistence conscious).
>

Store the OrderId, not the Order itself.


> I had imagined that the Order exposes a state setter, that the service
> would be able to change from the outside.
>

Hm, I don't really like it.


> On impl level I have no idea how this could work. A message becoming
> part of the entity?
> After all, I have to query for that state quite often...
>
> >> On Tue, Mar 16, 2010 at 1:17 AM, Jan Limpens <[email protected]>
> >> wrote:
> >>>
> >>> hello,
> >>>
> >>> a few more question on how to implement things in a nice way :)
> >>>
> >>> I have an OrderSaga and I want it to send a message if n days went by
> and
> >>> the customer has not yet paid for the order. I suppose it is no good
> idea to
> >>> Thread.Sleep for n days :)
> >>> How does one implement such a thing?
> >>> Is the saga kept alive for the whole period of its non-conclusion or is
> >>> it brought to live every now and then and checked, if there is
> something
> >>> that needs to be done?
> >>>
> >>> Should I reference the persisted Order in the Saga (via it's id)?
> >>>
> >>> If the Order has an enum State of possible states, should my
> OrderStates
> >>> class (the one I pass to the Saga via ISaga<OrderState>) wrap the enum
> and
> >>> the order to conclude which the current state is? Or should I better
> keep
> >>> this decoupled (and duplicated)
> >>>
> >>> Sorry for spamming the list & thanks!!
> >>>
> >>> --
> >>> Jan
> >>>
> >>> --
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> >
> >
> > --
> > Jan
> >
>
>
>
> --
> Jan
>
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