<schema xmlns="http://www.ascc.net/xml/schematron" >
     <pattern name="Select empty elements CCC">
          <rule context="CCC">
               <assert test="normalize-space(.) and *">Source contains an empty element CCC </assert>
               <report test="normalize-space(.) = ''">[1]An element CCC does not contain any text</report>
               <assert test="normalize-space(.)">[2]An element CCC does not contain any text</assert>
               <report test="not(*)">[1]An element CCC does not contain any child element</report>
               <assert test="*">[2]An element CCC does not contain any child element</assert>
          </rule>
     </pattern>
</schema>

