RE: [wsbpel] Issue - 166 - Let's try it again

["Eckenfels. Bernd" <B.Eckenfels@seeburger.de>]

Hello Dieter and Yaron, 

I guess one of the main considerations was, that the effects of single copys should not be visible to the outside AND it means that the accessed variables do not change while executing (the later is actually an additional requirement but I think in our shared data model really helpfull for the implementors) - even if it is pretty serializing.

Mit freundlichen Grüßen
Bernd Eckenfels
Chief Architect
--
SEEBURGER AG - Edisonstr.1 , D-75015 Bretten, Germany
Fax: +49 (0)7252 96-2400 - Phone: +49 (0)7252 96-1256
mailto:b.eckenfels@seeburger.de - http://www.seeburger.de


-----Original Message-----
From: Dieter Roller [mailto:ROL@de.ibm.com]
Sent: Tuesday, October 05, 2004 8:12 AM
To: ygoland@bea.com
Cc: wsbpeltc
Subject: Re: [wsbpel] Issue - 166 - Let's try it again






I don't think that the meaning of atomic is ambigous. It means that the
assign is executed has the properties of an ACID transaction. Requiring
that an assign is executed as the only activity in a process is far too
restrictive (and not necessary)...

Cheers,

dieter


Dieter Roller
IBM Senior Technical Staff Member (STSM)
IBM Academy of Technology Emeritus
Phone :                 +49-7031-164476
Fax :                    +49-7031-164890
e-mail                   rol@de.ibm.com



                                                                           
             "Yaron Y. Goland"                                             
             <ygoland@bea.com>                                             
                                                                        To 
             10/05/2004 01:54          wsbpeltc                            
             AM                        <wsbpel@lists.oasis-open.org>       
                                                                        cc 
                                                                           
             Please respond to                                     Subject 
                  ygoland              [wsbpel] Issue - 166 - Let's try it 
                                       again                               
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Problem: The meaning of the term atomic in the BPEL specification's
definition of assign is ambiguous.

Proposed Change Of Language: The assign activity is atomic, that is, the
assign activity MUST be executed as if, for the duration of its
execution, it was the only activity in the process being executed. The
mechanisms used to implement the previous requirement are implementation
dependent.

             Thoughts?

                         Yaron

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