exec.go(); should only be called once. It will start the state machine and it will go through all steps that meets the criteria (event cond).
Regards Jocke. 2011/5/3 Dario D <[email protected]>: > Hello all, > > I've just started using SCXML and it's great. However, I've hit a brick wall > and I can't seem to figure out something. I have the following XML file: > > <scxml xmlns="http://www.w3.org/2005/07/scxml"; > version="1.0" > initialstate="state1"> > > <state id="state1"> > <onentry> > <log expr="State 1"/> > </onentry> > <transition target="state2" /> > </state> > > <state id="state2"> > <onentry> > <log expr="State 2"/> > </onentry> > <transition target="state3" cond="1 = 2" /> > </state> > > <state id="state3" final="true"> > <onentry> > <log expr="State 3"/> > </onentry> > </state> > > </scxml> > > Now, I execute the state machine like this: > > SCXMLExecutor exec = null; > exec = new SCXMLExecutor(new ELEvaluator(), new SimpleDispatcher(), > new SimpleErrorReporter()); > Context ctx = new ELContext(); > exec.setRootContext(ctx); > exec.setStateMachine(scxml); > exec.setSuperStep(true); > // Start execution > try { > exec.go(); > exec.go(); > } catch (ModelException e) { > e.printStackTrace(); > } > > As you can see I call exec.go() two times. I would expect that in the first > time, the state machine will stop in the "state2" state and remain there, > because condition is not satisfied for going into "state3". However, when > exec.go() is called the second time, it goes from the start. Effectively, it > acts as exec.reset()? Following output is provided: > > 03.05.2011. 14:01:32 org.apache.commons.scxml.model.Log execute > INFO: null: State 1 > 03.05.2011. 14:01:32 org.apache.commons.scxml.model.Log execute > INFO: null: State 2 > 03.05.2011. 14:01:32 org.apache.commons.scxml.model.Log execute > INFO: null: State 1 > 03.05.2011. 14:01:32 org.apache.commons.scxml.model.Log execute > INFO: null: State 2 > > Could you explain this behavior? > -- Joakim Eriksson Albatross Holländargatan 20, 111 60 Stockholm Sweden +46 8 51160773 | Mobile +46 708 507 480 [email protected] | www.albatross.com --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
