xml - XSD restrictions based on open/closed elements -


is there way in schema indicate requirement of attributes determined open or closed nature of element. example have element if open has no requirement attribute 'test', if closed required.

<element name="employee" >     blah! </element>

ok

<element name="employee" />

fail - attribute 'test' required.

i guess using "open" mean element has text node child, , "closed" mean hasn't. you're saying element should either have text node child or attribute not both (?) , not neither.

that's classified co-occurrence constraint, , can't done in xsd 1.0. can done assertions in xsd 1.1

<xs:element name="employee" type="...">   <xs:assert test="string(.) or @name"/> </xs:element>

xsd 1.1 support available in xerces , saxon.


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