How can I empty this schema content model?

**robbobratt** · May 6 '11, 07:36 PM

I have the following base schema definition:

Code:

<xs:group name="learningSummaryRef.content">
 <xs:sequence>
  <xs:sequence>
   <xs:group ref="topicmeta" minOccurs="0" maxOccurs="1"/>
  </xs:sequence>
 </xs:sequence>
</xs:group>

I try to redefine as:

Code:

<xs:group name="learningSummaryRef.content">
 <xs:sequence>
  <xs:sequence>
   <xs:group ref="topicmeta" minOccurs="0" maxOccurs="0"/>
  </xs:sequence>
 </xs:sequence>
</xs:group>

Xerces gives the following error:

Code:

rcase-Recurse.2: There is not a complete functional mapping between the particles.

Code:

src-redefine.6.2.2: Group 'learningSummaryRef.content' does not properly restrict the group it redefines; constraint violated:  'rcase-Recurse.2'.

Can someone please tell me how to properly redefine this model as empty since the topicmeta element is emptiable.

Thanks.