Hi Adam, Jim

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On 
> Behalf Of Adam Groszer
> Sent: Monday, September 11, 2006 4:27 PM
> To: Jim Fulton
> Cc: zope3-dev
> Subject: Re[2]: [Zope3-dev] possible bug in zope.wfmc
> 
> Hello Jim,
> 
> My specific usecase is:
> 
>                         ---------
>                   ----->| Final |
>       ---------- /      ---------
> ...-->| Update |-       ---------
>       ---------- \----->| Issue |-->...
>           ^       \     ---------
>           |        \    ----------
>           |         \-->| Review |
>           |             ----------
>           |                  |
>           +------------------+
>           
> Update -> Final is guarded by "review_result == 'accepted'"
> Update -> Issue is guarded by "transitionName == 'update_issue'"
> Update -> Review is guarded by "transitionName == 'update_review'"
> On the UI I put up every possible transition. Now if my crazy 
> user chooses Final if review_result != 'accepted' then bang, 
> the process gets finished. No errors, no messages, no exceptions.
> I already thought of filtering the possible transitions on 
> the UI, but how? transitionName still forces the other 
> conditions to false. A kind of transition-precondition is not 
> available as I know.
> In this usecase raising an exception and thus not letting any 
> transition to fire fits me perfectly.

Is this (Update -> Final) not a end transaction?
Do you mean that the end transaction concept istn't correct
working?

> XPDL would give the options
> - exception
> - default exception
> - otherwise
> but none of these are implemented in zope.wfmc.
> 
> I think finishing the whole process is definitely bad behaviour.
> But what's correct? Please give a hint what should be done.

Sorry, I don't know. but I agree that it should be a difference 
if we finsih a transaction with a Fslse or True guard.

Regards
Roger Ineichen

> Monday, September 11, 2006, 4:00:01 PM, you wrote:
> 
> JF> On Sep 10, 2006, at 9:00 AM, Adam Groszer wrote:
> 
> >> Hello,
> >>
> >> I think I found a bug in zope.wfmc.
> >> Let's say the Review>Publish and Review>Reject transitions are 
> >> guarded by conditions.
> >>                               -----------
> >>                            -->| Publish |
> >>   ----------   ---------- /   -----------
> >>   | Author |-->| Review |-    ----------
> >>   ----------   ---------- \-->| Reject |
> >>                               ----------
> >>
> >> If at Review.workItemFinished() both conditions are still 
> _FALSE_ the 
> >> wfmc package finishes the whole process.
> >> I think the correct behaviour should be to not to allow to 
> finish the 
> >> workitem.
> 
> JF> I don't think that would be correct.
> 
> 
> >> Maybe an exception should be raised?
> 
> JF> You can actually model that in xpdl using an exception, 
> although I 
> JF> don't reflect off-hand  if that is supported in zope.wfmc.
> 
> JF> Jim
> 
> JF> --
> JF> Jim Fulton                      mailto:[EMAIL PROTECTED]       
>       Python Powered!
> JF> CTO                             (540) 361-1714            
>       http://www.python.org
> JF> Zope Corporation        http://www.zope.com             
> http://www.zope.org
> 
> 
> 
> 
> --
> Best regards,
>  Groszer Adam
> --
> Quote of the day:
> Money, not morality, is the principle commerce of civilized 
> nations.  -  Thomas Jefferson -
> 
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