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Re: AW: Issue: ALLPROP_AND_COMPUTED

From: <Tim_Ellison@uk.ibm.com>
Date: Fri, 4 May 2001 10:33:56 +0100
To: "Julian Reschke" <julian.reschke@gmx.de>, w3c-dist-auth@w3.org
Message-ID: <80256A42.00348F20.00@d06mta07.portsmouth.uk.ibm.com>


"Julian Reschke" <julian.reschke@gmx.de> wrote:

> > Von: w3c-dist-auth-request@w3.org
> > [mailto:w3c-dist-auth-request@w3.org]Im Auftrag von
> > Tim_Ellison@uk.ibm.com
> > Gesendet: Freitag, 4. Mai 2001 10:17
> > An: w3c-dist-auth@w3.org
> > Betreff: Re: Issue: ALLPROP_AND_COMPUTED
> >
> > I think the key part of Geoff's post is "the subset that it can use".
The
> > problem with allprop is that it will return all the live properties
> > irrespective of whether the client is aware of the properties'
semantics.
> > Sometimes this is what the client wants, say if it is naively
displaying a
> > property sheet; but most likely it is not since there is no way for the
> > client to interpret the values or know if/how they can be changed.
>
> If agree with "to know if they can be changed". But, if they CAN be
changed,
> the way to do that is pretty obvious, isn't it????

Causing the update of a live property is usually not obvious.  For example,
changing the DAV:getlastmodified value is achieved by PUT-ing new content,
changing the DAV:successor-set of a version is achieved by creating a
version whose DAV:predecessor-set identifies that version, and so on.

My point is that if, say, a versioning unaware client uses PROPFIND with
DAV:allprop and retrieves the name and value of the DAV:successor-set
property, the best the client can likely do is to render the XML value some
way that is not going to be very meaningful; and the client certainly isn't
going to know how to change that value.

Tim
Received on Friday, 4 May 2001 05:35:42 GMT

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