#31 NullPointerException

[Giovanni Azua]

Hi,

I defined a model that well because of the previously explained defects generates code that does not compile so I tried running the FSM from a memory model loaded from XML. It seems to work fine as my controlled printer is notified of the state change.

The problem is in the calling of:

engine.getEventManager().handleAndWait(event, context);

produces an unchecked exception:

Caused by: java.lang.NullPointerException
at com.evelopers.unimod.runtime.interpretation.InterpretationEventProcessor.transiteToStableState(InterpretationEventProcessor.java:99)
at com.evelopers.unimod.runtime.interpretation.InterpretationEventProcessor.process(InterpretationEventProcessor.java:148)
at com.evelopers.unimod.runtime.AbstractEventProcessor.process(AbstractEventProcessor.java:119)
at com.evelopers.unimod.runtime.AbstractEventProcessor.process(AbstractEventProcessor.java:81)
at com.evelopers.unimod.runtime.ModelEngine.process(ModelEngine.java:199)
at com.evelopers.unimod.runtime.StrictHandler.handle(StrictHandler.java:45)
at com.evelopers.unimod.runtime.StrictHandler.handleAndWait(StrictHandler.java:52)

If I just catch the exception and ignore then I get the result I wanted from the context produced from my controlled printer. Seems there is a situation not being handled correctly in the UniMod core.

I am willing to provide the example project if required.

Regards,
Giovanni

[Maxim Mazin]

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Please, provide us with the project. You may attached it zipped to this bug.

[Giovanni Azua]

Eclipse project that demonstrates the defect

[Giovanni Azua]

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Execute the defect.Start class, Exception occurs in line 126

Great work! many thanks!

Best Regards,
Giovanni
File Added: Bug1612327NullPointerException.zip

[Giovanni Azua]

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Hi,

Have you received the demo project? feasible solving the bug
for next release?

Best regards,
Giovanni