[news.eclipse.modeling.mdt.ocl] Re: OCL in Transition's Guard to access

[Ed Willink <ed@xxxxxxxxxxxxx>]

Hi Timothy

Please ask UML questions on the UML newsgroup.

You will need to privide much more context to identify 'self' to allow 
anyone not teleppathic to understand. The use of 
Transition.Trigger.Signal looks really wierd. They look like class not 
property names, but what is 'self'? Also do you mean to do so many 
implicit collects?

	Regards

		Ed Willink

Timothy Marc wrote:
> Hi all,
>
> i have a problem concerning guards and transitions and triggers. The 
> semnatics of an UML StateMachine is, that it is possible to access the 
> information carried by an event within the expression of a guard. In my 
> case, i want to compare a signal value with a value of the context 
> classifier of my transition's guard. My current approach is
>
> self.data = self.Transition.Trigger.Signal.data
>
> But i think this is not correct. Unfortunately, there is no convenient 
> example for this, mostly the example state only pseudo-ocl.
>
> Thanks
>
> Timothy