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Re: [Ietf-caldav] Re: CalDAV draft Informal Last-Call

From: Bernard Desruisseaux <bernard.desruisseaux@oracle.com>
Date: Wed, 15 Mar 2006 21:35:52 -0500
Message-ID: <4418CF08.7090300@oracle.com>
To: CalDAV DevList <ietf-caldav@osafoundation.org>
CC: Calsify WG <ietf-calsify@osafoundation.org>, WebDAV WG <w3c-dist-auth@w3.org>, Ted Hardie <hardie@qualcomm.com>

I thought it would be worthwhile to update everybody on the
changes we are planning to make in draft -11 based on the
issues that have been brought up so far:

- Added new preconditions:
    * CALDAV:number-of-recurrences-within-limits for PUT;
    * CALDAV:calendar-collection-location-ok for MOVE and COPY.
- Redefined the CALDAV:no-uid-conflict precondition.
- Minor editorial changes.
- Update to references.
- Added element CALDAV:is-not-defined.
- Added new attribute "negate-condition" to the
   CALDAV:text-match element.

The last two changes were required to be able to query the to-dos
that are *not* completed and *not* cancelled. The issue is that
the CALDAV:calendar-query REPORT does not provide support for a
"not" operator. To be able to address the above use case without
increasing the complexity of the CALDAV:calendar-query REPORT
significantly we have decided to add a new condition "is-not-defined" 
and to add a "negate-condition" attribute to be able to negate the
"text-match" condition.

Here's the DTD declarations that will be added to the draft:

   <!ELEMENT is-not-defined EMPTY>

   <!ATTLIST text-match negate-condition (yes | no) #IMPLIED "no">

Here's an example for the to-dos use case:

    REPORT /bernard/work/ HTTP/1.1
    Host: cal.example.com
    Depth: 1
    Content-Type: application/xml; charset="utf-8"
    Content-Length: xxxx

    <?xml version="1.0" encoding="utf-8" ?>
    <C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav">
      <D:prop xmlns:D="DAV:">
        <D:getetag/>
        <C:calendar-data/>
      </D:prop>
      <C:filter>
        <C:comp-filter name="VCALENDAR">
          <C:comp-filter name="VTODO">
            <C:prop-filter name="COMPLETED">
              <C:is-not-defined/>
            </C:prop-filter>
            <C:prop-filter name="STATUS">
              <C:text-match
                 negate-condition="yes">CANCELLED</c:text-match>
            </C:prop-filter>
          </C:comp-filter>
        </C:comp-filter>
      </C:filter>
    </C:calendar-query>

Please continue to send us feedback/questions/comments.

Thanks,
Bernard

Bernard Desruisseaux wrote:
> Quick update.  We will submit the CalDAV draft for Last Call when
> Internet-Draft posting will resume after the next IETF meeting.
> That will give more time to people to review the draft.
> 
> Cheers,
> Bernard
> 
> Bernard Desruisseaux wrote:
> 
>>
>> We submitted CalDAV draft -10 to the IETF yesterday. The draft has
>> not been officially announced yet, but it is already available for
>> you to review at the following URL:
>>
>> http://ietf.webdav.org/caldav/draft-dusseault-caldav-10.txt
>>
>> We would like to submit the CalDAV draft for Last Call in time for
>> the 65th IETF Meeting in Dallas (i.e., really soon!). Before we do
>> so, we would like to get as much feedback as possible from the
>> participants of the "ietf-caldav" mailing list as well as from the
>> members of the WebDAV and Calsify Working Groups.
>>
>> Once officially announced the draft should be available at:
>>
>>   http://www.ietf.org/internet-drafts/draft-dusseault-caldav-10.txt
>>
>> Previous versions of the draft are available at:
>>
>>   http://ietfreport.isoc.org/idref/draft-dusseault-caldav/
>>
>> Discussion on CalDAV is taking place on the "ietf-caldav" mailing list:
>>
>>   mailto:ietf-caldav@osafoundation.org
>>
>> which is archived at:
>>
>>   http://lists.osafoundation.org/mailman/listinfo/ietf-caldav
>>
>> Reports on the 4 CalDAV Interoperability Events organized by the
>> Calendaring and Scheduling Consortium (CalConnect) can be found at:
>>
>>   http://www.calconnect.org/ioppast.html
>>
>> Finally, additional information on CalDAV can also be found at:
>>
>>   http://ietf.webdav.org/caldav/
>>
>> Please review draft -10 and send us feedback/questions/comments.
>>
>> Thanks for you help!
>>
>> Cheers,
>> Bernard
>>
>> -- 
>>
>> C.1.  Changes in -10
>>
>>    a.  Added new section about support for X- items when storing data.
>>
>>    b.  Added new precondition to allow servers to reject queries on
>>        unsupported X- items, and a new example.
>>
>>    c.  Added new text about always supporting X- in calendar-data.
>>
>>    d.  Created new section for PUT, COPY and MOVE preconditions.
>>
>>    e.  Report examples re-done with full listing of calendar data in
>>        Appendix.
>>
>>    f.  Removed description of using UID, SUMMARY etc as resource name.
>>
>>    g.  Indicate that calendar object resource may contain only
>>        overridden components.
>>
>>    h.  Add security consideration about not expose details in resource
>>        names.
>>
>>    i.  Add constraint that free-busy-query can only be run on a
>>        collection.
>>
>>    j.  Add preconditions for calendar-timezone property/elements in
>>        MKCALENDAR, PROPPATCH and calendar-query REPORT.
>>
>>    k.  Fix principal-match example.
>>
>>
>>
> 
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Received on Thursday, 16 March 2006 02:36:04 GMT

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