…a bug fix snapshot is available [1]. Once again, I’d recommend you to skip
the explicit namespace construction if it’s not really needed.
[1] https://files.basex.org/releases/latest/
On Mon, Sep 25, 2023 at 2:48 PM Christian Grün <christian.gr...@gmail.com>
wrote:
> Thanks, Hans-Jürgen,
>
> looks like a bug; we’ll track that down.
>
> I assume you can simply omit the following line, as the necessary
> namespace declarations will automatically be added (unless you want to
> enforce the adoption of namespace declarations that are not required):
>
> in-scope-prefixes($n) ! namespace {.} {namespace-uri-for-prefix(., $n)},
>
> Best,
> Christian
>
>
> On Wed, Sep 20, 2023 at 6:34 PM Hans-Juergen Rennau <hren...@yahoo.de>
> wrote:
>
>> Dear BaseX folks,
>>
>> constructing elements, I encounter a problem with namespaces which I do
>> not understand. Is it a bug or do I overlook something?
>>
>> To reproduce the problem you need to create an XML file "doc.xml" with
>> this content:
>>
>> <doc xmlns="http://basex.org/simply/the/best";>
>> <foo bar="1">
>> <peng/>
>> </foo>
>> </doc>
>>
>> And here's the query:
>>
>> declare namespace f="http://basex.org/does/its/thing";;
>>
>> declare function f:pretty($n as node())
>> as node()? {
>> typeswitch($n)
>> case document-node() return document {$n/node() ! f:pretty(.)}
>> case element() return
>> element {node-name($n)} {
>> in-scope-prefixes($n) ! namespace {.}
>> {namespace-uri-for-prefix(., $n)},
>> $n/@* ! f:pretty(.),
>> $n/node() ! f:pretty(.)
>> }
>> default return $n
>> };
>>
>> let $doc := doc('doc.xml')
>> return f:pretty($doc)
>>
>> What I get is this error:
>>
>> Stopped at
>> C:/projects/tableman/prototype/thieme-showcase/xq/demo-namespace-problem.xq,
>> 8/33:
>> [XQDY0102] *Duplicate declaration of namespace* '
>> http://basex.org/simply/the/best'.
>>
>> Stack Trace:
>> -
>> C:/projects/tableman/prototype/thieme-showcase/xq/demo-namespace-problem.xq,
>> 11/33
>> -
>> C:/projects/tableman/prototype/thieme-showcase/xq/demo-namespace-problem.xq,
>> 11/33
>> -
>> C:/projects/tableman/prototype/thieme-showcase/xq/demo-namespace-problem.xq,
>> 6/63
>> -
>> C:/projects/tableman/prototype/thieme-showcase/xq/demo-namespace-problem.xq,
>> 17/16
>>
>> Strangely enough, you do not get the error if you copy the contents of
>> doc.xml into the query:
>>
>> let $doc := <doc .../>
>> return f:pretty($doc)
>>
>> You also do not get the error if you remove the @bar attribute in the
>> document.
>>
>> Kind regards,
>> Hans-Jürgen
>>
>
