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Re: XML Schema (sequence) and MSXMLDOM question.

• To: xml-dev@l...
• Subject: Re: XML Schema (sequence) and MSXMLDOM question.
• From: Eric van der Vlist <vdv@d...>
• Date: Wed, 26 Nov 2003 19:13:55 +0100
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• Organization: Dyomedea (http://dyomedea.com)
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On Wed, 2003-11-26 at 19:07, Rodrigo Pinho Pereira de Souza wrote:

> In theory, the XML above, is it ok?

The XML is perfectly OK, but the schema isn't!

When you write:

             <xs:sequence>

                    <xs:element ref="nsSDSGeneral:PlugIn" minOccurs="0"
maxOccurs="unbounded"/>

                    <xs:element ref="nsSDSGeneral:SDSMenuItem"
minOccurs="0" maxOccurs="unbounded"/>

                    <xs:element ref="nsSDSGeneral:PlugIn" minOccurs="0"
maxOccurs="unbounded"/>

             </xs:sequence>

A schema processor can't tell if a sequence composed of only a single
"nsSDSGeneral:PlugIn" element matched the first or the second occurrence
and this type of "non determinism" is forbidden by the W3C XML Schema
rec.

>  I think yes, and XMLSpy load and validate this normally, but when I
> want to load this in MSXMLDOM, I get a fail.
>
> Any suggestions?

1) Don't use tools that are not conform to the rec ;-) 

2) either rewrite your schema to make it deterministic or use a schema
language that doesn't require that (ie RELAX NG).

Eric
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(W3C) XML Schema ISBN:0-596-00252-1 http://oreilly.com/catalog/xmlschema
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• References:
  • XML Schema (sequence) and MSXMLDOM question.
    • From: "Rodrigo Pinho Pereira de Souza" <rpinho@f...>

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