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Subject: Re: [sca-policy] Is there a need for direct attachment?
Eric,
A nice piece of detective work. The charts attached to the proposal email
certainly outline the reasons why we might want to eliminate the use of
direct attachment in favor of supporting only external attachment. I'll
note that this will cause a fairly major rev to an essentially complete
Assembly spec, so we should do this with our eyes open.
The charts also mention the possibility of moving binding attachment to a
similar external mechanism. While I have always been a proponent of this,
I'd prefer to wait until the next spec versions (1.2 is fine) to tackle the
binding aspect of the proposal.
Dave Booz
STSM, BPM and SCA Architecture
Co-Chair OASIS SCA-Policy TC and SCA-J TC
"Distributed objects first, then world hunger"
Poughkeepsie, NY (845)-435-6093 or 8-295-6093
e-mail:booz@us.ibm.com
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|"Eric Wells" <eric.wells@hitachisoftware.com> |
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|"OASIS SCA Policy List" <sca-policy@lists.oasis-open.org> |
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| Date: |
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|02/01/2010 04:48 AM |
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|[sca-policy] Is there a need for direct attachment? |
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During the last teleconference I took an action to "trace" the discussion
of external attachments to see if I could find where we had discussed
removing the "direct" attachment mechanism, retaining only "external"
attachments. This topic has been mentioned off & on several times and
Sanjay and Anish actually put together a proposal. However it does not seem
to have been discussed beyond its introduction on 2008-8-25.
Minutes for 2008-08-25
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/29260/SCA%20Policy%20minutes%202008-08-25.pdf
Proposal:
http://lists.oasis-open.org/archives/sca-policy/200808/msg00012.html
I think what happened is that we got tied up with the "Push" vs. "Pull"
debate and the proposal to remove "direct" attachment did not get
incorporated into that proposal. POLICY-15 was open for very nearly 1 year
and discussed/mentioned during virtually every teleconference - there were
a LOT of issues that needed sorting out. I think the "direct" attachment
discussion just fell through the cracks.
It would probably be better to open a new issue for this and review Sanjay
and Anish's proposal again.
Best Regards,
Eric.
Eric Wells
Consulting Engineer
Hitachi Computer Products (America) Inc.
San Francisco, CA
+1 (415) 672-2594
Brief history of the "External Attachment" issue opened as POLICY-15
1) Opened as one of a batch of new issues on 22-Oct-07
2) Derived from OSOA issue SCA-164 (Dave Booz)
3) Original E-mail from Ashok Malhotra:
http://lists.oasis-open.org/archives/sca-policy/200710/msg00048.html
4) JIRA entry: http://www.osoa.org/jira/browse/POLICY-15
5) Much discussion over a long period and resolved during October 2008 F2F
in Boston, MA.
2008-04-14 Initial mention of removing direct attachments (and
"Pull" mechanism)
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/28038/SCA%20Policy%20minutes%202008-04-14.pdf
2008-04-21 "Push" vs. "Pull" debate
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/28116/SCA%20Policy%20minutes%202008-04-21.pdf
2008-05-05 Process polictSets and Intents separately?
http://www.oasis-open..org/apps/org/workgroup/sca-policy/download.php/28264/SCA%20Policy%20minutes%202008-05-05.html
2008-05-19 Mike Edwards proposal to remove "Pull" mechanism
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/28579/SCA%20Policy%20minutes%202008-05-19.pdf
2008-06-05 F2F at SAP, Walldorf, Germany.
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/28580/SCA%20Policy%20minutes%202008-06-06.pdf
2008-07-07 Mike Edwards revised proposal - "Push" only. Direct
(explicit) attachment "only used for simple cases" - not expected to be
common use case.
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/28902/SCA%20Policy%20minutes%202008-07-07.pdf
2008-07-28 Entire telecon devoted to POLICY-15.
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/29040/SCA%20Policy%20minutes%202008-07-28.pdf
2008-08-11 Final agreement to remove "Pull" mechanism.
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/29199/SCA%20Policy%20minutes%202008-08-11.pdf
*** 2008-08-25 Sanjay Patil & Anish Karmarkar's proposal to remove
direct (AKA in-line, explicit) attachment.
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/29260/SCA%20Policy%20minutes%202008-08-25.pdf
Proposal:
http://lists.oasis-open.org/archives/sca-policy/200808/msg00012.html
2008-10-02 F2F, Boston, MA - POLICY-15 resolved.
http://www.oasis-open.org/apps/org/workgroup/sca-policy/download.php/29648/SCA%20Policy%20minutes%202008-10-02.pdf
No further discussion of this topic.
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