Re: [xml-dev] Schema constructs

[ht@inf.ed.ac.uk (Henry S. Thompson)]

"James, David" <david.james@invensys.com> writes:


> The all group (All the elements in the group may appear once or not
> at all, and they may appear in any order.) appears to be just what I
> want but it seems that it cannot be nested within a sequence
> group.

So the other possibility for XML Schema is to nest your flexible tags
in another element, so the <all> group can be used:

  <modify>
    <tag>PT456</tag>
    <mods>
     <lowscale>10.0</lowscale>
    </mods>
  </modify>
  <modify>
    <tag>PT789</tag>
    <mods>
     <hiscale>100.0</hiscale>
     <lowscale>10.0</lowscale>
    </mods>
  </modify>

Perhaps cleaner, move the tag _up_ to an attribute:

  <modify tag="PT456">
    <lowscale>10.0</lowscale>
  </modify>
  <modify tag="PT789">
    <hiscale>100.0</hiscale>
    <lowscale>10.0</lowscale>
  </modify>

Hope one of these will work for you.

ht
-- 
 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                     Half-time member of W3C Team
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