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AW: UPDATE semantics for checked-out resources

From: Manfred Baedke <manfred.baedke@greenbytes.de>
Date: Fri, 27 Sep 2002 15:20:33 +0200
To: "Clemm, Geoff" <gclemm@rational.com>, <ietf-dav-versioning@w3.org>
Message-ID: <OHENICDONOELEOHDPIDHOEKGCAAA.manfred.baedke@greenbytes.de>
RE: UPDATE semantics for checked-out resourcesThis is true, but it does not
apply to the more general case of an UPDATE
of a version.controlled collection containing a checked-out resource which
is not identified
by the DAV:version-controlled-binding-set of the update source.

Cheers, Manfred
  -----Ursprüngliche Nachricht-----
  Von: ietf-dav-versioning-request@w3.org
[mailto:ietf-dav-versioning-request@w3.org]Im Auftrag von Clemm, Geoff T
  Gesendet: Freitag, 27. September 2002 14:00
  An: ietf-dav-versioning@w3.org
  Betreff: RE: UPDATE semantics for checked-out resources

  I agree with your conclusion, but I believe this follows from
  the DAV:no-overwrite-by-auto-update precondition for CHECKIN, i.e.:

   If the DAV:auto-update property for the checked-out resource
   identifies a version-controlled resource, at least one of the
   versions identified by the DAV:predecessor-set property of the
   checked-out resource MUST identify a version that is either the same
   as or a descendant of the version identified by the DAV:checked-in
   property of that version-controlled resource.

  If the VCR is checked-out, there is no DAV:checked-in version,
  which means this precondition would not be satisfied.


  -----Original Message-----
  From: Stefan Eissing [mailto:stefan.eissing@greenbytes.de]
  Sent: Friday, September 27, 2002 4:48 AM
  To: Clemm, Geoff
  Cc: ietf-dav-versioning@w3.org
  Subject: Re: UPDATE semantics for checked-out resources

  While we're at this topic: we have a similar issue with auto-update of
  version controlled collections.

  - checkout a versioned collection with apply-to-version
  - remove a member from the working collection
  - checkout in-place the member of the versioned controlled collection
  - checkin the working collection

  -> the version controlled collection should be updated an remove
     the binding to the checked-out resource.

  I think the checkin should fail in this case, as the removal of
  a checked-out member might cannot be permitted.

  Do you agree?
Received on Friday, 27 September 2002 09:21:08 UTC

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