2010/9/16 Thiébault Benoît <d...@artenum.com>: > Thank you, it works very well (the first option, because I don't know a > priori the event name so it is hard to use the second). > > When you say "When using v0.9", is this API planned to change in future > version or is it just to say "it works in 0.9 but might not work forever" > <snip/>
The latest draft includes more meta-data for events (in addition to payload). Though the change hasn't been implemented yet, there will be an _event variable and the payload will be at _event.data in subsequent releases. -Rahul > Kind regards > Ben > > Le 16 sept. 2010 à 16:38, Rahul Akolkar a écrit : > >> 2010/9/16 Thiébault Benoît <d...@artenum.com>: >>> Hi everyone, >>> >>> I'm using SCML with custom actions. I followed the Custom Actions tutorial >>> successfully (http://commons.apache.org/scxml/guide/custom-actions.html), >>> but the Hello action only uses parameters provided in the SCXML file. >>> >>> What I want to do is to provide a payload to the triggering event and >>> retrieve it in my custom action. Is this possible ? >>> >>> // In the method firing the event >>> TriggerEvent[] evts = {new TriggerEvent(event.getId(), >>> TriggerEvent.SIGNAL_EVENT, myPayload)}; >>> try { >>> engine.triggerEvents(evts); >>> } catch (ModelException me) { >>> logError(me); >>> } >>> >>> // In the custom action class >>> public void execute(EventDispatcher evtDispatcher, ErrorReporter errRep, >>> SCInstance scInstance, Log appLog, Collection derivedEvents) throws >>> ModelException, SCXMLExpressionException { >>> // Here I want to retrieve myPayload >> <snip/> >> >> When using v0.9, for the above external trigger: >> >> Object payload = scInstance.getRootContext().get("_eventdata"); >> >> When processing internal / derived events, the following: >> >> Object payload = >> scInstance.getRootContext().get("_eventdatamap").get("my.event.name"); >> >> For examples which may illustrate where the payload resides in the >> root context, see the eventdata-*.xml files here (this may help to see >> how the values may be retrieved programmatically within a custom >> action): >> >> http://svn.apache.org/repos/asf/commons/proper/scxml/tags/SCXML_0_9/src/test/java/org/apache/commons/scxml/env/jexl/ >> >> -Rahul >> >> >>> } >>> >>> Kind regards >>> Ben >>> >> --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@commons.apache.org For additional commands, e-mail: user-h...@commons.apache.org
