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Subject: RE: Fwd: RE: [ws-caf] Statement for WS-Transactions workshop
Hi Alistair, I guess that must have been where you got confused. We were not proposing a merger but a collaborative activity in which we'd explore the best way to combine our efforts. We did not give any specific proposals for what it would look like to combine WS-At with the WS-CAF ACID transaction model. We simply said (on behalf of all WS-CAF members, yourself included, of course) that we'd like to have a conversation to find the best way forward. I mentioned one possible scenario for how we might combine our efforts, but it was a starting point for the conversation. It was also not part of the official WS-CAF TC statement, and I made that clear. And I did not and never would say anything about throwing anyone's work away -- that would not be a polite suggestion at all. I hope this helps. Thanks, Eric -----Original Message----- From: Green, Alastair J. [mailto:Alastair.Green@choreology.com] Sent: Thursday, March 18, 2004 1:56 PM To: Newcomer, Eric; Pete Wenzel Cc: ws-caf@lists.oasis-open.org Subject: RE: Fwd: RE: [ws-caf] Statement for WS-Transactions workshop Hi Eric, I guess I was assuming that in any merger there is an acquirer and a target. What would be left from WS-CAF? WS-CTX and WS-TXM BP, at most. That was the basic message I got. No issues were raised with respect to specific WS-AT/Acid or WS-BA/LRA differences, or points made about the distinctive contributions or features of those two specs that would add to or alter the shape of WS-AT and WS-BA, other than the need for heuristic reporting in WS-AT (which I certainly agree with). I'm actually very interested in canvassing opinion in the CAF group about the key points I highlighted in my additional notes on the Feedback workshop, with respect to WS-BA (see my earlier message in this thread). Are these seen as important, correct, incorrect and/or inconsequential? Obviously it's the start of a process with WS-C+T, so we'll have to see what happens. The biggest question in my mind is: how open to well-founded, informed argument will the author companies be? I think that a successful standard in this area needs the backing of the WS-C+T author companies, and it would be good to see what is valuable and distinct in the prior work in BTP, and the current work in CAF, reflected. My final point would be that the field of business transaction management, application coordination, call it what you will, is emerging. In this field the existence of multiple protocols is going to confuse and hamper, rather than foster, market development. We think WS-BA, appropriately modified in a rather incremental way, and kept relatively narrow, can provide the platform for a wide spread of applications and models, going well beyond the (important but limited) role of support for BPEL compensations. Alastair -----Original Message----- From: Newcomer, Eric [mailto:Eric.Newcomer@iona.com] Sent: 17 March 2004 16:16 To: Green, Alastair J.; Pete Wenzel Cc: ws-caf@lists.oasis-open.org Subject: RE: Fwd: RE: [ws-caf] Statement for WS-Transactions workshop Alistair, I'd like to be clear on these points. What I said was the question of authorship should be considered in any discussion about merging the specs. I did not suggest that any specs be dropped. The suggestion was to look at merging the similar specs and add new specs where similarities don't currently exist (i.e. in WS-Context and the BP transaction model). Thanks, Eric -----Original Message----- From: Green, Alastair J. [mailto:Alastair.Green@choreology.com] Sent: Wednesday, March 17, 2004 10:25 AM To: Newcomer, Eric; Pete Wenzel Cc: ws-caf@lists.oasis-open.org Subject: RE: Fwd: RE: [ws-caf] Statement for WS-Transactions workshop Eric suggested that the primary authors of the WS-CAF specs would like to become authors of WS-C+T in the process of bringing WS-TXM BP into the fold. The indication was that WS-TXM Acid and LRA are duplicative of AT and BA, and would be dropped. WS-Context was suggested as an aspect to be retained, by contrast. In his statement he suggested that pretty much all of the original author companies of CAF were supportive of this approach. We in Choreology made the statement that we considered BTP to be dead, i.e. not a contender as leading specification for Web Services transactions. (We have held this view since it became clear that IBM and Microsoft introduced their own specs in this space, but now seems like a sensible time to emphasize the point. We believe BTP is like a transition relationship: it's necessary in the absence of more durable or authorative solutions; it's good while it lasts, it fills the gap while the other solution gets sorted, and it's not going to last. We would like to see WS-BA emerge as the vanguard spec, drawing on other and prior work, e.g. BTP and CAF.) We raised a whole series of issues relating to details of WS-AT, and more substantive methodological ones relating to WS-BA. There was not time to discuss or even raise all of our points and we were invited to submit a detailed, prescriptive account in writing for further consideration, which we will do. The key items are: need to align business promises (e.g. reservations) with protocol promises (PREPARED); equality of treatment for the positive and negative final signals (CONFIRM/CANCEL in BTP-speak, CLOSE/COMPENSATE in WS-BA speak); need to allow selective confirmation of prepared participants (do not introduce a rule that ensures a uniform outcome across the whole pool). We also believe that an interoperable control protocol (terminator-coordinator) protocol is very important (although not strictly critical) for a selective confirmation protocol. We are also interested in the checkpointing and notification aspects in WS-TXM BP. Alastair -----Original Message----- From: Newcomer, Eric [mailto:Eric.Newcomer@iona.com] Sent: 17 March 2004 13:50 To: Pete Wenzel Cc: ws-caf@lists.oasis-open.org Subject: RE: Fwd: RE: [ws-caf] Statement for WS-Transactions workshop Pete, My apologies to you and everyone else on the list. I should have thought to send an email right after the meeting. There was no formal reaction to our statement. The workshop was set up as a feedback workshop, and the WS-CAF statement was taken in that context. We (Mark Little and I) also proposed a "straw horse" proposal for merging WS-CAF with WS-AT, WS-BA, and WS-C. I understand it's being evaluated. Overall the meeting consisted primarily of presentations on the BEA/IBM/MSFT specifications with some discussion about them that resulted in about a dozen issues being raised. I think it was a good opportunity to let everyone know what's going on in WS-CAF, make the point about common ancestry and technical similarities, and highlight where WS-CAF provides extensions to the BEA/IBM/MSFT specs, especially around generic context management and the business process transaction model. We will have to wait for a more formal reaction. Eric -----Original Message----- From: Pete Wenzel [mailto:pete@seebeyond.com] Sent: Tuesday, March 16, 2004 2:10 PM To: Newcomer, Eric Cc: ws-caf@lists.oasis-open.org Subject: Re: Fwd: RE: [ws-caf] Statement for WS-Transactions workshop Eric, are you able to report anything about the workshop, or was it held under nondisclosure? Any response to your proposal? Thanks. --Pete Pete Wenzel <pete@seebeyond.com> Senior Architect, SeeBeyond Standards & Product Strategy +1-626-471-6311 (US-Pacific) Thus spoke James Bryce Clark (jamie.clark@oasis-open.org) on Mon, Mar 08, 2004 at 10:36:30PM -0800: > >> --- Below this line is a copy of the message. > >> > >> Date: Mon, 8 Mar 2004 19:24:08 -0800 (PST) > >> From: Eric Newcomer > >> Subject: RE: [ws-caf] Statement for WS-Transactions > >> workshop > >> To: ws-caf@lists.oasis-open.org > >> > >> Apologies - I typed this in much earlier today, but > >> our email system has been out since noon, and is > >> apparently still down. So I'm posting from my > >> private account. Eric > >> ------ > >> > >> Hi, > >> > >> Per today's concall, here is the edited version of the > >> statement I plan to give on behalf of the WS-CAF TC at > >> the Microsoft/IBM/BEA WS-Transactions feedback > >> workshop Wednesday March 10. Please let me know if > >> there are any further comments or suggestions. > >> > >> The WS-CAF TC would like to recognize the common > >> ancestry and technical similarities across the WS-T, > >> WS-C, WS-BA and WS-CAF sets of specifications. During > >> our work we've discovered the benefits of separating > >> out context management as a generic mechanism, and > >> have developed a key additional protocol called the > >> Business Process transaction model. We think the > >> WS-T, WS-C, and WS-BA specifications would benefit > >> from including these major concepts. > >> > >> We propose a discussion on finding the best way to > >> move forward and bring our work together. > >> > >> Thanks - > >> > >> Eric
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