Re: [Jolie-devel] java.lang.NullPointerException on WhileProcess-NDChoiceProcess

[Matthias D. W. <mwa...@ya...>]

Yes, this one is fixed. I will try to get a short example for the other bug.

Cheers,
Matthias

Fabrizio Montesi schrieb:
> Hi Matthias,
> I've found a bug which was probably causing your exception, could you
> try out the latest version in trunk please?
> 
> Cheers,
> Fabrizio.
> 
> On Sun, Jan 12, 2014 at 6:21 PM, Matthias Dieter Wallnöfer
> <mwa...@ya...> wrote:
>> Hi Fabrizio & devs,
>>
>> during development of my current Jolie-based project which is some kind
>> of Formula 1 simulator I stumbled across the following issue:
>>
>>> Exception in thread "tinyClient.ol-JolieThread-2" java.lang.NullPointerException
>>>         at jolie.process.NDChoiceProcess.run(NDChoiceProcess.java:95)
>>>         at jolie.process.WhileProcess.run(WhileProcess.java:55)
>>>         at jolie.process.SequentialProcess.run(SequentialProcess.java:59)
>>>         at jolie.process.DefinitionProcess.run(DefinitionProcess.java:46)
>>>         at jolie.SessionThread.run(SessionThread.java:461)
>>
>> This exception occurs randomly when I run my client software (with input
>> and output ports) - currently still very basic (see attachment). The
>> real simulation happens on the server side and sends events in a push
>> manner ("genericEvent", "simFinished").
>>
>> If I change the client to look like this the problem does no longer
>> appear but I have no way to shut it down remotely.
>>
>>> execution { sequential }
>>>
>>> main
>>> {
>>>     [ genericEvent(event) ] {
>>>       println@Console(event)()
>>>     }
>>>     [ simFinished() ] {
>>>       nullProcess
>>>     }
>>> }
>>
>> But according to the example under
>> http://www.jolie-lang.org/?top_menu=documentation&sideMenuAction=basics/sessions
>> the "while" loop approach should work.
>> To me the exception looks very close to some sort of race condition.
>>
>> Cheers,
>> Matthias
>>