Re: Designing my finite state machine

From: Remi Bastide (FirstName.LastName_at_irit.fr)
Date: 03/14/05 

Date: Mon, 14 Mar 2005 12:58:27 +0100

Robert C. Martin <unclebob@objectmentor.com> wrote:

>On Thu, 10 Mar 2005 21:37:14 +0100, "Matthias Hofmann"
><hofmann@anvil-soft.com> wrote:
>
>Matthias,
>
>It is generally a good idea to separate event identification from the
>finite state machine itself. The firing of a transition is a boolean
>event. That event can be given a name (e.g. start, done, complete).
>
>What you have described are a set of flags and conditions that have to
>be boiled down into single events. I strongly suggest you do this
>boiling outside of the FSM proper, so that the FSM sees only the
>boolean events.
>
>As an aid, I suggest you download SMC from:
>http://www.objectmentor.com/resources/downloads/index
>

I'm surprised that you suggest to transform these "flags and
conditions" into events. To me, it appears that they would better be
modelled as (sub-)states. A boolean flag to me is just one part of the
state space, that should be modelled as a state as much as it remains
convenient.

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