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RE: Co-ordination protocol and BPEL

From: Ricky Ho <riho@cisco.com>
Date: Thu, 22 May 2003 09:45:59 -0700
Message-Id: <4.3.2.7.2.20030522093943.01c68700@franklin.cisco.com>
To: "Furniss, Peter" <Peter.Furniss@choreology.com>
Cc: <public-ws-chor@w3.org>

Peter


>The general case is
>         perform provisional work such that you can later:
>
>         make it not so, if so instructed
>         make it finally so, if so instucted
>
>(slot in as many synonyms for provisional, make it not so, make it so as
>you please)
>
>so, I agree, you need at least two "handlers". Whether these are defined
>as mainstream and exception, or both as event handlers is mostly a
>matter of how the language works, I think.

But in BA of WS-Tx, there is no "provisional" concept.  The case is ...

         Do and commit.
         If error
                 Undo by compensate

I don't see where is the "co-ordination" which I'm assuming some sort of 
2-phase message exchange.

Rgds, Ricky
Received on Thursday, 22 May 2003 14:26:27 GMT

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