Re: Question regarding scxmlgui tool

[Rahul Akolkar <ra...@gmail.com>]

On Wed, Jun 20, 2012 at 4:22 AM, Nir Shemesh <ni...@gmail.com> wrote:
> Hi Apache Users,
>
> I need your help regarding my question below
>
<snip/>

See inline below.


> Many thanks
>
> Nir
>
>
> ---------- Forwarded message ----------
> From: Fabrizio Morbini <fm...@gmail.com>
> Date: Tue, Jun 19, 2012 at 11:48 PM
> Subject: Re: Question regarding scxmlgui tool
> To: Nir Shemesh <ni...@gmail.com>
>
>
> Hi, first i have to say that this question is really a question you
> should ask the Apache SCXML folks given that it's an executor question
> as opposed to a interface question.
>
> Going to the question, transitions are treatment the same, even if
> they are loops (i.e. source and target nodes are the same). When one
> takes the transitions you leave the source node and you execute the
> OnExit. When you enter the same node you execute the OnEntry.
>
> Hope it helps, but please ask the Apache SCXML mailing list.
>
> best
>
> On Tue, Jun 19, 2012 at 1:42 PM, Nir Shemesh <ni...@gmail.com> wrote:
>> Hi Fabrizio,
>>
>> I"m using your tool to evaluate scxml concept for my hobby.
>>
>> I made a simple model with two states ("inactive" and "active") wherethere
>> is transition from inactive to active and active has a transition to
> itself.
>>
>> Now, when statemachine is in "active" and its self transitin iignite i
>> noticed that execution occure of the transition(has expected)
>>
>> BUT also onExit and OnEntry execution content of "active" state also
> occure.
>>
>> My question is why - since we are in self transition (stayes on save
> state)
>> there is no need to establish onEntry and onExit execution.
>>
>> Opinun? :)
>>
<snap/>

If you want the onexit and onentry to execute, then specify the parent
state as the target state to the transition (via the "target"
attribute of the <transition> element). Such a transition is referred
to as a self transition.

If you do not want the onexit and onentry to execute, then leave the
transition targetless (do not specify a "target" attribute on the
<transition> element). Such a transition is referred to as a stay
transition.

-Rahul


>> Thanks
>>
>> Nir

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