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I think your schema should be:
<xs:complexType name="contentiddef">
<xs:sequence>
<xs:element ref="x:major" minOccurs="0" maxOccurs="unbounded"/>
<xs:choice>
<xs:sequence>
<xs:element ref="x:minor"/>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="x:major"/>
<xs:element ref="x:minor"/>
<xs:element ref="x:version"/>
</xs:choice>
</xs:sequence>
<xs:sequence>
<xs:element ref="x:version"/>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="x:major"/>
<xs:element ref="x:minor"/>
<xs:element ref="x:version"/>
</xs:choice>
</xs:sequence>
<xs:sequence>
<xs:element ref="x:externalid"/>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="x:major"/>
<xs:element ref="x:externalid"/>
</xs:choice>
</xs:sequence>
</xs:choice>
</xs:sequence>
</xs:complexType>
This makes you think about your data model. Usually when it's hard to
write a schema for a certain xml flavor, you might want to reconsider
the xml. What are you trying to achieve?
Best,
Laurens van den Oever
Q42
-----Original Message-----
From: Niels Peter Strandberg [mailto:nielspeter@n...]
Sent: Friday, December 16, 2005 4:53 PM
To: xml-dev@l...
Subject: XML schema cos-nonambig problem
This error message below is reported back from Xerces. The problem is
the "major" element. How can I reconstruct my XML Schema so that I
can avoid this error?
cos-nonambig: "http://www.polopoly.com/polopoly/cm/app/xml":major and
"http://www.polopoly.com/polopoly/cm/app/xml":major (or elements from
their substitution group) violate "Unique Particle Attribution".
During validation against this schema, ambiguity would be created for
those two particles.
<xs:complexType name="contentiddef">
<xs:choice>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="x:major"/>
<xs:element ref="x:externalid"/>
</xs:choice>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="x:major"/>
<xs:element ref="x:minor"/>
<xs:element ref="x:version"/>
</xs:choice>
</xs:choice>
</xs:complexType>
Thanks!
Niels Peter
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