problem with parse-xml function - BaseX-Talk - mailman.uni-konstanz.de

14 Mar 2013


      Hi,
Let me show you a simple example that shows strange behaviour of
parse-xml() function:
-----------------------------------------------
declare function local:transform($nodes as node()*) as item()* {
    for $node in $nodes
    return
        typeswitch($node)
        case text() return parse-xml-fragment($node)
        case element(b) return element b {local:transform($node/node())}
         default return local:transform($node/node())
};
let $textdoc :=
<doc>&lt;a&gt;content 1&lt;/a&gt;
  <b>&lt;a&gt;content 2&lt;/a&gt;</b>
</doc>
let $doc :=
<doc>{
for $node in $textdoc/node()
    return local:transform($node)
}</doc>
let $doc2 :=
<doc>{
for $node in $doc/node()
   return $node
}</doc>
return $doc
----------------------------------------------------
After running it on baseX 7.6 the result is:
$doc =
<doc>
  <a>content 1</a>
  <b>
    <a>content 2</a>
  </b>
</doc>
but it differs from doc2:
$doc2 =
<doc>
  <b>
    <a>content 2</a>
  </b>
  <a>content 1</a>
</doc>
Why does using parse-xml() function change the order of the elements?
I ran this simple code on zorba and eXist (using util:parse() function)
and $doc2 was the same as $doc.
Regards
Bartosz Marciniak