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I also fully support this idea. Another use case, I detected during development of simulation models.
In SysML the choice pseudo state (in Rhapsody Condition Connector) decides the outgoing transition to take by dynamic, run-time conditions. Also I would expect that the corresponding actions are evaluated at run time. If I have a sequence of transitions with choices then I would expect that the action of transition INTO a choice would effect the guards of the OUTGOING transitions of that choice. This sees to be currently not the case.
E.g. in my example I have an INGOING transition into a choice with event(value)/(params->value; LocalVar=value;)
I would expect that in the OUTGOING transition I could have a guard [LocalVar == someCondition] and this is taking the up-to-date value from the ingoing transition. Indeed this is NOT the case. There will be a delay of 1 tick. To take the up-to-date value I would always need to use params->value. This is for my understanding not in line with SysML, so I really strongly support the enhancement (not only for GUI).
Hi,
Thank you for bringing this to our notice.
We had an internal discussion on the way it was design.
State machines in Rhapsody are event driven and are compliant with UML definition.
Currently there is no plan to support guards and execution trigger.
Hence, we cannot take this suggestion forward.
Regards,
Suneel…
PS:
It is possible to create such a system by customizing code/framework.
I suggest you take this up with IBM Services Team.
Upload of models is not supported, so I add only a screenshot of the model.
I fully support this idea.
Let's assume a state chart is active and a guard with a condition on a variabel prevents transition to an other state. If you change that variable via GUI knob (so that the transition should happen), in fact nothing happens. Currently, the state has to be re-entered to recognize the changed guard condition! This not expected behavior.
See attach model for reference.