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functx:has-empty-content

Whether an element has empty content

Description

The functx:has-empty-content function returns true if the element has no content at all (not even whitespace.) This is in contrast to the fn:empty function, which will return true for any element regardless of whether it has any content.

To test whether an element has any content besides whitespace, see the functx:all-whitespace function.

Arguments and Return Type

XQuery Function Declaration

declare namespace functx = "http://www.functx.com";
declare function functx:has-empty-content
  ( $element as element() )  as xs:boolean {

   not($element/node())
 } ;

Examples

<in-xml>
   <a></a>
   <b/>
   <c>   </c>
   <d>xml</d>
   <e><x>xml</x></e>
   <f>mixed <x>xml</x></f>
   <g> <x>xml</x>  </g>
</in-xml>

functx:has-empty-content($in-xml/a)

true

functx:has-empty-content($in-xml/b)

true

functx:has-empty-content($in-xml/c)

false

functx:has-empty-content($in-xml/d)

false

functx:has-empty-content($in-xml/e)

false

functx:has-empty-content($in-xml/f)

false

functx:has-empty-content($in-xml/g)

false

See Also

History