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XML valued datatypes

From: Wallmer, Martin <Martin.Wallmer@softwareag.com>
Date: Tue, 7 Oct 2003 11:20:07 +0200
Message-ID: <DFF2AC9E3583D511A21F0008C7E62106063A906F@daemsg02.software-ag.de>
To: www-webdav-dasl@w3.org
Hi,

when we're talking about datatypes, what about xml value'd properties? 

Example:

You have two resources, one you PROPPATCHed with:

<?xml version="1.0" encoding="utf-8"?>
<D:propertyupdate xmlns:D="DAV:">
  <D:set>
    <D:prop xmlns:Z="http://www.w3.com/standards/z39.50">
      <Z:authors>
        <Z:Author>Jim Whitehead</Z:Author>
        <Z:Author>Roy Fielding</Z:Author>
        <Z:Co-author>Lieschen Mueller</Z:Co-author>
      </Z:authors>
    </D:prop>
  </D:set>
</D:propertyupdate>

the second with

<?xml version="1.0" encoding="utf-8"?>
<D:propertyupdate xmlns:D="DAV:">
  <D:set>
    <D:prop xmlns:Z="http://www.w3.com/standards/z39.50">
      <Z:authors>
        <Z:Author>Lieschen Mueller</Z:Author>
      </Z:authors>
    </D:prop>
  </D:set>
</D:propertyupdate>

How to find all resources, where Lieschen Mueller was author, not Co-author?
Currently you have to define something like:

<like>
  <prop>
    <Z:authors/>
  </prop>
  <literal>%Lieschen Mueller%</literal>
</like>

but of course you will find both resources. Relying on formatting won't
work. So what about something like:

<xpath>
  <prop>
    <Z:authors/>
  </prop>
  <literal>[Z:author="Lieschen Mueller"]</literal>
</xpath>

or finding all resources, where a Co-author is defined:

<xpath-is-defined>
  <prop>
    <Z:authors/>
  </prop>
  <literal>./Z:Co-author</literal>
</xpath-is-defined>

where the literal is an xpath expression relative to the property (root
element).

Regards,
Martin

__________________________
Martin Wallmer
Research & Development
Software AG    ++49 6151 92 1831
Uhlandstr. 12
D 64297 Darmstadt
Received on Tuesday, 7 October 2003 05:21:13 GMT

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