I need to create an XML document from data in BaseX 11.5 inside basexgui. The data in the database does not use any namespaces. The document I am creating must have a default namespace set. Here is a stripped down example of my XQuery:

 

for $w in /json/workouts/_/header[uuid='123'] return
<gpx xmlns="http://www.topografix.com/GPX/1/1" >
  <title>{$w/title/text()}</title>
</gpx>

 

Strangely all XPaths inside and outside the gpx-element will not match anything as long as I have the default namespace on the gpx-element defined. It works if I drop the xmlns attribute or I define the namespace explicitly, like:

 

for $w in /json/workouts/_/header[uuid='123'] return
<g:gpx xmlns:g="http://www.topografix.com/GPX/1/1" >
  <g:title>{$w/title/text()}</g:title>
</g:gpx>

let $doc := document {
  <json>
    <workouts>
      <_>
        <header>
          <uuid>123</uuid>
          <title>title 1</title>
        </header>
      </_>
      <_>
        <header>
          <uuid>123</uuid>
          <title>title 2</title>
        </header>
      </_>
    </workouts>
  </json>
}
let $gpx1 :=
  for $w in $doc/json/workouts/_/header[uuid='123']
  let $title := $w/title/text()
  return
    <gpx xmlns="http://www.topografix.com/GPX/1/1" >
      <title>{$w/title/text()}</title>
      <titlex>{$w/*:title/text()}</titlex>
      <titley>{$title}</titley>
    </gpx>
let $gpx2 :=
  for $w in $doc/json/workouts/_/header[uuid='123'] return
    <g:gpx xmlns:g="http://www.topografix.com/GPX/1/1" >
      <g:title>{$w/title/text()}</g:title>
    </g:gpx>
return
( $gpx1
, $gpx2
)

<gpx xmlns="http://www.topografix.com/GPX/1/1"><title/><titlex>title 1</titlex><titley>title 1</titley></gpx>
<gpx xmlns="http://www.topografix.com/GPX/1/1"><title/><titlex>title 2</titlex><titley>title 2</titley></gpx>
<g:gpx xmlns:g="http://www.topografix.com/GPX/1/1"><g:title>title 1</g:title></g:gpx>
<g:gpx xmlns:g="http://www.topografix.com/GPX/1/1"><g:title>title 2</g:title></g:gpx>