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Description

Contents models can be open (it means that any other element can be also used) or closed (no other element can be used) .

Schema


<schema xmlns="http://www.ascc.net/xml/schematron" >
     <pattern name="Open model">
          <rule context="AAA">
               <assert test="BBB"> BBB element is not present</assert>
               <assert test="CCC"> CCC element is not present</assert>
          </rule>
     </pattern>
     <pattern name="Closed model">
          <rule context="AAA">
               <assert test="BBB"> BBB element is not present</assert>
               <assert test="CCC"> CCC element is not present</assert>
               <assert test="count(BBB|CCC) = count (*)">There is an extra element</assert>
          </rule>
     </pattern>
</schema>

Sources and outputs

Source (XML 1)Output

<AAA>
     <BBB/>
</AAA>
 Pattern: Open model
/AAA: CCC element is not present

 Pattern: Closed model
/AAA: CCC element is not present


Source (XML 2)Output

<AAA>
     <BBB/>
     <DDD/>
</AAA>
 Pattern: Open model
/AAA: CCC element is not present

 Pattern: Closed model
/AAA: CCC element is not present
/AAA: There is an extra element