Re: [Boost-users] [statechart] Pass event data to state constructor?

Subject: Re: [Boost-users] [statechart] Pass event data to state constructor?
From: Andreas Huber (ahd6974-spamboostorgtrap_at_[hidden])
Date: 2009-09-02 17:00:24

> In the scenario I'm thinking of, we have an event which says "data is
> available" from a data source. We don't want to put the data itself in the
> event, because it's very large and/or very expensive to obtain, and it 
> might
> or might not be of interest. Instead, the event contains a token that can 
> be
> used to request the data if it turns out to be needed. So on receipt of 
> that
> "data is available" event, we'll transition to a new state that can
> determine whether it needs to obtain the data or not, and if so, to use 
> the
> token to get it. But as it stands now, the new state doesn't have access 
> to
> the token.

Ok. How do you determine whether you'll query the data source? Do you need 
to wait for more events or can this be determined with the token only?

-- 
Andreas Huber
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