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Home » Boards » Stylus Studio Developer Network » XQuery Help and Discussion » XSD: Structure definition depending on element or attribute value
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Alexander BecherSubject: XSD: Structure definition depending on element or attribute value
Author: Alexander Becher
Date: 18 Nov 2011 11:52 AM
Originally Posted: 18 Nov 2011 11:50 AM
Dear support,

i want to define a structure depending on element or attribute value. F.i. following structures should be valid.

<Reply>
<RC>0</RC>
</Reply>
or
<Reply>
<RC>1</RC>
<Exception>
<ExceptioID>123</ExceptioID>
<ExceptioText>blah</ExceptionText>
</Exception>
</Reply>

It means the Substructure Exception should be only valid if the value of the Element (or alternatively Attribute) RC is "0".

I try to enable it with following.
<xs:assert test="if (@RC eq 0) then Exception else false()"/> but ASSERT isn't recognized by Stylus Studio 2011 as a valid option. Can you help me?

Thanks
StylusUser
Posttop
Ivan PedruzziSubject: XSD: Structure definition depending on element or attribute value
Author: Ivan Pedruzzi
Date: 18 Nov 2011 05:44 PM
Hi Alexander,

The Saxon schema processor is capable to validate a schema like the following, but unfortunately Stylus Studio does not enable XSD 1.1 validation. If you own a license of Saxon Enterprise Edition you will be able to use it.

As alternative you may consider to design a program in XSLT or XQuery to assert your rules.

Hope this helps
Ivan Pedruzzi
Stylus Studio Team


<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
<xs:element name="Reply">
<xs:complexType>
<xs:sequence>
<xs:element ref="RC"/>
<xs:element ref="Exception" minOccurs="0"/>
</xs:sequence>
<xs:assert test="( RC eq '1' and count(./Exception) gt 0 ) or ( RC eq '0' and count(./Exception) = 0)"/>
</xs:complexType>
</xs:element>
<xs:element name="RC" type="xs:integer"/>
<xs:element name="Exception">
<xs:complexType>
<xs:sequence>
<xs:element ref="ExceptioID"/>
<xs:element ref="ExceptionText"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="ExceptioID" type="xs:integer"/>
<xs:element name="ExceptionText" type="xs:NCName"/>
</xs:schema>
   
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