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From Rahul Akolkar <rahul.akol...@gmail.com>
Subject Re: [SCXML] Assign with the wildcard "*"
Date Fri, 31 Jul 2009 21:35:17 GMT
On Fri, Jul 31, 2009 at 4:47 PM, Mehdi KENNANI<mehdi.kennani@etu.upmc.fr> wrote:
> Hi all
>
> I'm trying to use SCXML for a project (i have to realise an implementation
> of the MMI w3C spec).
>
> In my example, I want to assign the name of the event at a var.
>
> Somethink like this :
>
> <state id="getCity">
>     <transition event ="*" target="checkCity" name="evt">
>       <assign location="${Data(city,'root/mycity')}" expr="${event}" />
>     </transition>
> </state>
>
> Somebody know how can i do this ? and is it possible to do this ?
>
<snip/>

In the latest release (v0.9), a little bit of work is required to do
such a thing. Add the event name (a bit redundantly) as a property of
the event payload when you create the TriggerEvent. Say that property
is called "name", then it can be accessed in the <assign> above with
the following expr attribute:

    expr="${_eventdata.name}"

In subsequent (future) releases, this information will be available
using the new "_event" variable specified in the latest SCXML Working
Draft like so:

    expr="${_event.name}"

There will be no need to rely on the payload to transmit the name at that point.

-Rahul


>
> Mehdi
>
>

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