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Posted to dev@commons.apache.org by "Rahul Akolkar (JIRA)" <ji...@apache.org> on 2006/12/08 00:09:25 UTC
[jira] Updated: (SCXML-22) The engine must report error/warning
when invalid events are triggered
[ http://issues.apache.org/jira/browse/SCXML-22?page=all ]
Rahul Akolkar updated SCXML-22:
-------------------------------
Fix Version/s: 1.0
(was: 0.6)
> The engine must report error/warning when invalid events are triggered
> ----------------------------------------------------------------------
>
> Key: SCXML-22
> URL: http://issues.apache.org/jira/browse/SCXML-22
> Project: Commons SCXML
> Issue Type: Improvement
> Affects Versions: 0.5
> Environment: Win XP Professional, jdk 1.4.02
> Reporter: Raj Rao
> Fix For: 1.0
>
>
> The semantics must report an error/warning/notification when an invalid event is triggered, instead of silently discarding it. An invalid event is one that is not specified for the current state.
> Here's an excerpt of a converstaion, where the suggested workaround was not applicable. This requirement is crucial for me.
> --
> Raj
> --------------------------------------------------------------------------------------------------------------------------------------
> > Hello,
> >
> > I tried sending an invalid event to the state machine
> > and didn't see any error being reported. By invalid I
> > mean this event was not expected in the current state.
> >
> > Does the SCXMLSemanticsImpl report an error (via the
> > the ErrorReporter) when such an event is silently
> > discarded?
> >
> <snip/>
> No, because the semantics treat it as simply an inconsequential
> trigger (causing no change to the state machine), rather than an
> error.
> One of the ways you could track this is to register a SCXMLListener on
> the executor and track onTransition() callbacks (if you get none, the
> trigger is "invalid" -- per your definition above).
> -Rahul
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