[xquery-talk] Namespace conflict ?

[Christian Grün]

Hi Leo,

the reason is that the XML document in your first example does not
have any namespace; so there won't be any conflicts. Instead, the new
namespace will be assigned to the addressed element.

This is different in the second case. The specification [1] says that
"If the namespace binding of $QName conflicts with any namespace
binding in the namespaces property of $target, a dynamic error is
raised [err:XUDY0023].". This is why an error is raised if a namespace
already exists.

Hope this helps,
Christian

[1] http://www.w3.org/TR/xquery-update-10/#id-rename



>> The problem is that your original document
>> uses the default namespace "http://www.mygym.com", and your query uses
>> "http://www.gym.com". In other words, the error is raised because the
>> namespace binding of your target name conflicts with the existing
>> namespace binding.
>
> That I don't get.
>
> This works
> let $i:=(doc("FitnessCenter.xml")//Name)[1]
>
> return rename node $i as QName('http://www.gym.com', "Name")
> with
> <?xml version="1.0" encoding="UTF-8"?>
>
> <FitnessCenter>
>    <Member Level="platinum">
>        <Name>Jeff</Name>
>        <FavoriteColor>lightgrey</FavoriteColor>
>    </Member>
> </FitnessCenter>
>
> This not
>
> declare namespace gym='http://www.mygym.com';
>
> let $i:=(doc("FitnessCenter.xml")//gym:Name)[1]
>
> return rename node $i as QName('http://www.gym.com', "Name")
> with
> <?xml version="1.0" encoding="UTF-8"?>
>
> <FitnessCenter xmlns="http://www.mygym.com">
>    <Member Level="platinum">
>        <Name>Jeff</Name>
>        <FavoriteColor>lightgrey</FavoriteColor>
>    </Member>
> </FitnessCenter>
>
>
>
> Why should that conflict?
> Always
> Leo
>
>
>
>
>>
>> Here is a recursive approach to change the default namespace of a document:
>> ______________________________________
>>
>> declare function local:update($root as node(), $ns as xs:string) {
>> if($root instance of element()) then (
>>   element { QName($ns, local-name($root)) } {
>>     $root/@*,
>>     for $node in $root/node()
>>     return local:update($node, $ns)
>>   }
>> ) else (
>>   $root
>> )
>> };
>>
>> let $ns := 'http://www.gym.com'
>> let $root := doc("FitnessCenter.xml")/*
>> let $updated := local:update($root, $ns)
>> return replace node $root with $updated
>> ______________________________________
>>
>> Hope this helps,
>> Christian
>>
>>
>>
>> On Tue, Sep 16, 2014 at 12:10 PM, Leo Studer <leo.studer at varioweb.ch> wrote:
>>> Hello
>>>
>>> I use the following query with Saxon-EE xQuery 9.5.1.5 in Oxygen.
>>>
>>> for $i in doc('FitnessCenter.xml')//*
>>>       return rename node $i as QName('http://www.gym.com', local-name($i))
>>>
>>>
>>> on the following file:
>>>
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <FitnessCenter xmlns="http://www.mygym.com">
>>>       <Member Level="platinum">
>>>               <Name>Jeff</Name>
>>>               <FavoriteColor>lightgrey</FavoriteColor>
>>>       </Member>
>>>       <Member Level="gold">
>>>               <Name>David</Name>
>>>               <FavoriteColor>lightblue</FavoriteColor>
>>>       </Member>
>>> </FitnessCenter>
>>>
>>> and get the following error: new name conflicts with existing namespace binding
>>>
>>>
>>> I thought the function local-name() produces an output  without namespace binding? Can anyone explain?
>>>
>>> Thanks in advance
>>> Leo
>>>
>>>
>>> _______________________________________________
>>> talk at x-query.com
>>> http://x-query.com/mailman/listinfo/talk
>
>
> _______________________________________________
> talk at x-query.com
> http://x-query.com/mailman/listinfo/talk