The key benefit here is the ability to associate/link
a BPSS sematic node with both 1) its implementation and 2) its role in the
business-agreement/contract layer. How that is implemented with respect
to a backend system event is not my concern, what is my concern is the
semantic-definition that can be USED to implement a backend monitor.
<JJ>If I
understand this paragraph correctly, beginsWhen is not used in the sense of a
“guard” (can only begins when the condition is true and other things have to
happen before this guard flips its value), but rather in the sense of
expressing a state (i.e. when this BTA begins, then we are in the “product
delivered state” provided that there is a delivery date, … Is that correct? In
that case, it would mean that the beginsWhen and endsWhen have no influence on
the choreography, they are really state
representations
</JJ>
-----Original Message-----
From:
martin.me.roberts@bt.com [mailto:martin.me.roberts@bt.com]
Sent:
Tuesday, June 15, 2004 8:35 AM
To: david@drrw.info; Monica.Martin@Sun.COM;
anderst@toolsmiths.se; Yunker, John; nagahashi@fla.fujitsu.com;
jeanjadu@Attachmate.com
Cc: ebxml-bp@lists.oasis-open.org
Subject: RE:
[ebxml-bp] [ebBP] Tell 6/14/2004: Business Contract Requirements for State
Alignment
Hi,
I know
I am not partaking much these days but on this subject I have some
views.
beginsWhen and
endWhen were effectively comments on the transaction in 1.01 and the CEFACT
1.1. Moving away from this to show some other flow or usage needs to be
very, very carefully thought through. I would be unhappy to see that
these are used as a back door event based solution. I know that is what
they were aimed at originally, it is just that the implications of this are to
make the processes more complex.
Martin Roberts
xml designer,
BT
Exact
e-mail: martin.me.roberts@bt.com
tel: +44(0) 1473 609785
clickdial
fax: +44(0) 1473 609834
Intranet Site :http://twiki.btlabs.bt.co.uk/twiki
-----Original
Message-----
From: David RR Webber [mailto:david@drrw.info]
Sent: 15 June
2004 15:29
To: Monica J. Martin; Anders W. Tell; Yunker, John; Kenji
Nagahashi; Jean-Jacques Dubray
Cc: ebXML BP
Subject: Re: [ebxml-bp]
[ebBP] Tell 6/14/2004: Business Contract Requirements for State
Alignment
Monica,
Not wanting to preempt discussion on
Friday - but just wanting to throw out some technical ideas.
What if we
linked the signals to the begins/endsWhen conditionals on a BT?
Just
like with my proposal around linkage to context statements using a nameRefID -
we could easily point to a named signal (it has that attribute already) and it
would be either then boolean true or false.
eg:
beginsWhen="#mysignal-Is-On"
This still leaves how the signal itself
gets set of course! Seems like Dales post earlier may fit / hint into
that category...since the only attribute in the signal right now is the URI -
how does one actually turn a signal on?!
If we can crack that "glue"
then I believe we can provide
what we need here.
Am I also right in
thinking that essentially used in this way the signals actually constitute the
equivalent of an immediate "break" command so familiar in procedural languages
to escape into/out of the current logical block. In our case that is of
course a BT.
DW
----- Original Message -----
From: "Monica J.
Martin" <Monica.Martin@Sun.COM>
To: "Anders W. Tell"
<anderst@toolsmiths.se>; "Yunker, John" <yunker@amazon.com>;
"Kenji Nagahashi" <nagahashi@fla.fujitsu.com>; "Jean-Jacques
Dubray" <jeanjadu@Attachmate.com>
Cc: "ebXML BP"
<ebxml-bp@lists.oasis-open.org>
Sent: Tuesday, June 15, 2004 1:53
AM
Subject: [ebxml-bp] [ebBP] Tell 6/14/2004: Business Contract
Requirements for State Alignment
> Today's ebBP call surrounded
how we ensure (as much as practical)
> state alignment. Kenji Nagahashi
proposed we provide additional
> constraints on web services (top-down
approach - business process to
> web services). We would like to
more fully discuss the business
> contract requirements related to:
State alignment and business
> signals. Here are some of the
questions that arose (from John Yunker
>
particularly):
>
> * How do signals give
you state alignment? How do we get
certainty
> from a business
perspective?
> * How does the contract layer use
the state alignment will help us
>
relate the special business timeouts to the technical
signal
> receipt.BPSS provides a
semantic to the contract layer.
The
> business level timeouts in
addition to the protocol level
have
to
> be
recognized.
> * How does the contract layer use
the state alignment. This will
>
help us relate the special business timeouts to the
technical
> signal receipt.
[1]
>
> The bullets above can form the agenda (subject to team
input). Any
> member is welcomed to attend. Those expressing an
interest today were:
> Yunker, Dubray, Nagahashi and Moberg (and
myself).
>
> You have indicated you would be available Friday and
Monday (6/21).
> Let's try, as
discussed:
>
> * 877 330 9868,
international 909 472 3386, when prompted hit
**,
> then passcode
09868.
> * Time: 9 a.m. PDT, 6 p.m. CET, 18 June
2004.
> * Agenda above.
>
>
Thanks.
> [1] Steve Capell, RedWahoo
question.
>
>
>