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[idan]

Hi,

I have an xml element A which based on his value I want to do couple thing:
If A=1 I want to make element B optional element.
If A=2 I want to make element B required and his values to be one of 3,4 or 5. and etc.

This is my new xsd :

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"  

    xmlns:sch="http://www.ascc.net/xml/schematron"    

    elementFormDefault="qualified" >


 <xs:element name="books"> 

  <xs:complexType>

   <xs:sequence>  

    <xs:element name="book" type="bookType" maxOccurs="unbounded">

      <xs:annotation>

       <xs:appinfo>

        <sch:pattern id="onLoanTests" xmlns:sch="http://purl.oclc.org/dsdl/schematron">

          <sch:rule context="book">

           <sch:report test="@on-loan and not(@return-date)">

           Every book that is on loan must have a return date

           </sch:report>

          </sch:rule>

        </sch:pattern>

       </xs:appinfo>

      </xs:annotation>

    </xs:element>

   </xs:sequence> 

  </xs:complexType>

 </xs:element>


 <xs:complexType name="bookType">

  <xs:sequence>

   <xs:element name="title" type="xs:string" />

   <xs:element name="author" type="xs:string" />

   <xs:element name="publication-date" type="xs:string" />

  </xs:sequence>

  <xs:attribute name="publisher" type="xs:string" use="required" />

  <xs:attribute name="on-loan" type="xs:string"  use="required" />

  <xs:attribute name="return-date" type="xs:string"  use="optional" />

 </xs:complexType>


</xs:schema>

I tried to write a little example which suppose to fail like this :

<books>

<book publisher="ddd" on-loan="sdsd">

<title> idan title </title>

<author> idan author </author>

<publication-date> idan date </publication-date>

</book>

</books>

Now, using the xml I provided I don't get validation error. I assumed I will get the message "Every book that is on loan must have a return date" And that the xml won't be valid. Suggestions as to why ?

Thanks