State Machine and Internal State Event

[christophefournier]

Hi,
I have a problem I can not solve alone.

A transition can be due to an event, there can be a guard condition, and the resul is an action, linked to the transition it self.

I would like to do the same INSIDE a State, and without exiting and re-entering the same State.
To do that, I use the "operations" of a State.
The problem is that :
- the event is call : "action"
- i am obliged to cheat and the guard condition is included in the "action" field.
- the result of the event is called "name"

Is there a better way of doing that ?

Chris

[«Midnight»]

Try using substates. Then model the parent state such that the transition out occurs when any (single or combination of) substates exit. [The conditions for exiting the parent would be determined by the internal structure, as per UML.

[KP]

Or... use a transition but give it the stereotype «internal».

[Paolo F Cantoni]

Or... use a transition but give it the stereotype «internal».

Yes Neil,  but it MUST be between internal substates (by definition); No?

I think David's hit the nail on the head.  If you can't define substates then you need to query whether a transition should exist.

Paolo

[christophefournier]

Hi all,
I thank you for your help.
I think I will use the stereotype "internal", that stereotype that will mean "do not execute the entry nor the exit functions".
Good job !