How about wrapping your statechart in a state with transition(s) that will
handle the 'invalid' events? Something like
<state ...>
<... your 'original' statechart, where e1 is invalid in s1 and e2
in s2 .../>
<transition event="e1" cond="in(s1)">
... execontent that will report the error or whatever ...
</transition>
<transition event="e2" cond="in(s2)">
... execontent that will report the error or whatever ...
</transition>
</state>
Or have I misunderstood the nature of your problem?
Regards,
Torbjörn
On 9/28/06, Raj Rao (JIRA) <[EMAIL PROTECTED]> wrote:
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
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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