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Subject: Re: [wsbpel] Issue - 103 - Moving Forward






That works for me also, although process wise I still it would be clearer
having a separate bug issue for the XPath binding.

Paco



                                                                       
                      "Yaron Y. Goland"                                
                      <ygoland@bea.com>        To:       Satish Thatte <satisht@microsoft.com>
                                               cc:       Danny van der Rijn <dannyv@tibco.com>, wsbpeltc
                      09/29/2004 07:55          <wsbpel@lists.oasis-open.org>
                      PM                       Subject:  Re: [wsbpel] Issue - 103 - Moving Forward
                      Please respond to                                
                      ygoland                                          
                                                                       




That commitment sits fine with me. Paco, does it work for you?

             Yaron

Satish Thatte wrote:
>
>
> This is OK with me if we make a commitment that the eventual complete
> resolution will either drop $ syntax or make it possible to use it with
> all XML content in all variables including messagetype variables.
>
> -----Original Message-----
> From: Yaron Y. Goland [mailto:ygoland@bea.com]
> Sent: Monday, September 27, 2004 5:50 PM
> To: Satish Thatte
> Cc: Danny van der Rijn; wsbpeltc
> Subject: Re: [wsbpel] Issue - 103 - Moving Forward
>
> The proposal would specify that the $ syntax would be available for
> non-messageType variables only. For the moment I don't intend to
> restrict getVariableData for messageType only variables because I hope
> we will come up with a resolution for the messageType issue that allows
> us to get rid of getVariableData.
>
> The point of having a partial proposal is to let us make progress. We
> can agree on the parts we agree on and get them voted on and then use
> that as a foundation for moving forward on the issues of messageType and
> property access.
>
>         Yaron
>
> Satish Thatte wrote:
>  >
>  >
>  > So if I understand this correctly, you are proposing that we do two
>  > things with the partial resolution
>  >
>  > 1.  Allow BPEL variables of XML types/elements to be bound into XPath
>  > using the $ notation
>  >
>  > 2.  Define the BPEL context for XPath more precisely including
>  > differentiating normal vs join expressions
>  >
>  > I certainly support 2.  I am a bit concerned about a schizophrenic
>  > resolution of variable binding.  One of the reasons I liked the $
>  > notation was that it clearly defined the point of binding, eliminating
>  > any races (at least in my na´ve understanding of XPath) in cases of
>  > multiple occurrences of getVariableData in an expression, which is
>  > evaluated concurrently with updates to those variables.  Now we would
>  > have a split brain on this issue.
>  >
>  > Satish
>  >
>  > -----Original Message-----
>  > From: Danny van der Rijn [mailto:dannyv@tibco.com]
>  > Sent: Monday, September 27, 2004 9:27 AM
>  > Cc: wsbpeltc
>  > Subject: Re: [wsbpel] Issue - 103 - Moving Forward
>  >
>  > +1
>  >
>  > Alex Yiu wrote:
>  >
>  >  >
>  >  > A big +1 from me.
>  >  >
>  >  > Regards,
>  >  > Alex Yiu
>  >  >
>  >  >
>  >  > Yaron Y. Goland wrote:
>  >  >
>  >  >> Any time a proposal gets too big it can be difficult to make
> progress
>  >  >> because too many issues get mixed up together. As such I propose
> that
>  >  >> we break issue 103 into separate proposals, much as we did with
> issue
>  >  >> 10.
>  >  >>
>  >  >> The first proposal I think should go out for a vote would be a
>  >  >> modified version of the current 103 proposal that removes the WSDL
>  >  >> binding to XPATH variables, keeps the getVariableData function and
>  >  >> doesn't change the current from-specs and to-specs.
>  >  >>
>  >  >> This proposal would just include the binding of non-WSDL BPEL
>  >  >> variables to XPATH variables along with defining the XPATH
>  >  >> environment in which various BPEL expressions execute.
>  >  >>
>  >  >> Then when we settle exactly how we would like to model WSDL
> variables
>  >  >> we can decide the future of getVariableData(), how WSDL variables
>  >  >> will appear in XPATH (including any special forms for doc/lit),
> if we
>  >  >> would like to allow properties to be bound to variables, what
>  >  >> from-spec and to-specs we want to use, etc.
>  >  >>
>  >  >> I believe that by breaking this problem up into discrete issues we
>  >  >> can make more rapid progress.
>  >  >>
>  >  >> What does the group think?
>  >  >>
>  >  >>     Thanks,
>  >  >>
>  >  >>         Yaron
>  >  >>
>  >  >> To unsubscribe from this mailing list (and be removed from the
> roster
>  >  >> of the OASIS TC), go to
>  >  >>
>  >
>
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.
>
>  >
>  >  >>
>  >  >>
>  >  >
>  >  >
>  >  >
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