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From Chris Ma <...@ipm.edu.mo>
Subject Re: Problem in compensation instances group
Date Tue, 10 Feb 2009 07:11:47 GMT

I upload the BPEL  http://www.nabble.com/file/p21928772/instance_group.txt
program . Thanks a lot..

Chris Ma



mriou wrote:
> 
> On Sun, Feb 8, 2009 at 8:05 PM, Chris Ma <cma@ipm.edu.mo> wrote:
> 
>>
>> Hi all,
>>
>>    I am doing a survey on BPEL's compensation instances group and I found
>> some strange nature which is not specific in the BPEL specification 2.0,
>> I
>> am not sure if it is normal or not in all BPEL server, or anyone has the
>> practical example to support the strange nature?
>>
>> As the following program, a while loop count x from 0 to 5, it contains a
>> scope, the scope increase X by 1, the compensation of the scope decrease
>> X
>> by 1.
>>
>> the strange is, if a throw inside the while loop is called(e.g. throw_1),
>> the last compensation instance is executed. X will finally be 2. on the
>> other hand, if a throw outside the while loop is called(throw_2), all
>> compensation instances are invoked and X will finally be 0. It is strange
>> that the throw_1 can not call all the compenstion instances...Please
>> comment. Thanks!
>>
> 
> Interesting. Do you have the BPEL process implementing this? I like
> pseudo-code but to comment on such a specific behavior, I'd like to see
> the
> exact code.
> 
> Thanks,
> Matthieu
> 
> 
>>
>>
>> X=0
>> While X < 5
>>
>>   { A  ?  C  , F }  where A has activity X= X + 1, C is compensation X=X
>> -1, F is the fault handler.
>>
>>   if x >2 then (throw_1-> compensate)
>>
>> loop
>>
>> (throw_2 -> compensate)
>>
>>
>> Chris Ma.
>>
>> --
>> View this message in context:
>> http://www.nabble.com/Problem-in-compensation-instances-group-tp21906836p21906836.html
>> Sent from the Apache Ode User mailing list archive at Nabble.com.
>>
>>
> 
> 

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