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RE: Workspaces, Baseline-Control und auto-version, MKCOL

From: Clemm, Geoff <gclemm@rational.com>
Date: Fri, 11 Jan 2002 14:33:15 -0500
Message-ID: <3906C56A7BD1F54593344C05BD1374B103F8AE83@SUS-MA1IT01>
To: ietf-dav-versioning@w3.org
   From: Tim Ellison [mailto:Tim_Ellison@uk.ibm.com]

   "Clemm, Geoff" <gclemm@rational.com> wrote:

   > If it is a change that results in a change to the DAV:checked-in
   > property of any member of the baseline controlled collection
   > (e.g. CHECKIN, UPDATE, MERGE), then it is considered a change to
   > the version-controlled configuration, and such a change MUST be
   > rejected unless the VCCn is checked out, or if auto-versioning is
   > appropriately set for the VCCn.

   I'm left wondering why this is so.  On the face of it, these
   postconditions mean that where a baseline-controlled collection has
   a checked-in version-controlled configuration there is a guarantee
   that the membership of the configuration (rooted at the
   baseline-controlled collection) is the same as that represented by
   the checked-in version-controlled configuration -- however, that
   only covers the checked-in version-controlled members of the
   configuration ... there can be variance by non-version-controlled
   members and/or checked-out version-controlled members.  So what is
   the value of this postcondition?

The purpose of these postconditions is so that you can get some
default baselining behavior for a baselining-unaware client,
just as DAV:auto-version on a VCR gives you default versioning
behavior for a versioning-unaware client.  In particular,
the reasonable time to automatically create a new baseline would
be when it would capture a different value than the current baseline,
(i.e. when the DAV:checked-in version of one of the version-controlled
members has changed).

Cheers,
Geoff
Received on Friday, 11 January 2002 14:34:18 GMT

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