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Recursive elements in XML. How do i create a XSD for this?


I am trying to create a XML schema to validate a XML document. The XML document has recursive <Section> elements (as shown below). Can someone help me create the XSD for the recursive part (Section One and the children)

<?xml version="1.0" encoding="UTF-8"?>
<MenuHelp sectionHeading="" menuSpace="">
<Section name="Application Help" url="" helpFileName="" isLegacy="1" code="">
<Section name="Section One Help" url="" helpFileName="" isLegacy="1" code="">
<Section name="Section One SubHelp" url="" helpFileName="" isLegacy="1" code="">
<Section name="Section One SubSubHelp" url="" helpFileName="" isLegacy="1" code="">
<Section name="SubSubSubHelp " url="" helpFileName="" isLegacy="1" code=""/>
<Section name="Header " url="" helpFileName="" isLegacy="1" code=""/>
<Section name="Saved Search Help" url="" helpFileName="" isLegacy="1" code=""/>
<Section name="Changes Help" url="" helpFileName="" isLegacy="1" code=""/>
<Section name="Login Help" url="" helpFileName="" isLegacy="1" code="">
<Section name="Login Sub Help" url="" helpFileName="" isLegacy="1" code=""/>
Jan 31 '08 #1
1 7787
2,057 Expert 2GB
The key is to use the ref attribute.
When you initially reference the Section element inside the sections, use a ref:
Expand|Select|Wrap|Line Numbers
  1. <xs:element name="Sections">
  2.     <xs:complexType>
  3.         <xs:sequence>
  4.             <xs:element ref="Section" minOccurs="0" maxOccurs="unbounded"/>
  5.         </xs:sequence>
  6.     </xs:complexType>
  7. </xs:element>
Then declare the Section element, and have it reference itself.
Expand|Select|Wrap|Line Numbers
  1. <xs:element name="Section">
  2.     <xs:complexType>
  3.         <xs:sequence>
  4.             <xs:element ref="Section" minOccurs="0" maxOccurs="unbounded"/>
  5.         </xs:sequence>
  6.         <xs:attribute name="code"/>
  7.         <xs:attribute name="url"/>
  8.         <xs:attribute name="isLegacy"/>
  9.         <xs:attribute name="name"/>
  10.         <xs:attribute name="helpFileName"/>
  11.     </xs:complexType>
  12. </xs:element>
Feb 4 '08 #2

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