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Re: Problem using <xsd:all>

  • From: Dennis Sterzenbach <lists@r...>
  • To: Paul Stepowski <paul.stepowski@i...>
  • Date: Tue, 02 Oct 2007 13:13:22 +0200

Re:  Problem using <xsd:all>
Hi Paul,

Paul Stepowski wrote:
> That is, I require either:
> <tasklist>
>  <success/>
>  <failure/>
> </tasklist>
> or:
> <tasklist>
>  <failure/>
>  <success/>
> </tasklist>
I think your schema definition then should look something like:
<xsd:element name="tasklist">
      <xsd:element ref="success" minOccurs="1" maxOccurs="1" />
      <xsd:element ref="failure" minOccurs="1" maxOccurs="1" />

The <xsd:all> should do the job here, as to that one requirement.
The problem with your first XSD was that you defined an <xsd:all> inside
some <xsd:sequence>, where nesting <xsd:all> inside <xsd:sequence>
doesn't work.

If your <tasklist> may also contain other elements which you don't want
to apply the rules of <xsd:all>, it could be a lot easier to wrap your
special <success> and <failure> elements inside another element like:

  <foo />
  <bar />
    <failure />
    <success />

This enables you to use desired <xsd:sequence> for <tasklist> and use
the <xsd:all> for <status> containing only <failure> and <success>, each
occurring once.

Best Regards
-- Dennis Sterzenbach

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