RE: [xsl] How to change namespace prefixes in a import file hierarchy? Or at least append som pattern?

["Ben Stover" <bxstover@xxxxxxxxxxx>]

Hello Mike,

thank you for your sample code but the the closing tags seem not to fit together. I completed your code as follows and removed one "</"

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:strip-space elements="*"/>
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"></xsl:output>
  
<xsl:template match="*">
  <xsl:element name="{local-name()}" namespace="{namespace-uri()}">
    <xsl:for-each select="namespace::*">
       <xsl:namespace name="{if (local-name() = 'oldprefix') then 'newprefix' else local-name()}" select="string(.)"/>
       </xsl:for-each>
    </xsl:element>
    <xsl:apply-templates select="@*, node()"/>
  </xsl:template>

<xsl:template match="attribute(*, xs:QName)">
  <xsl:attribute name="{name()}" select="concat(if (get-prefix-from-QName(.) = 'oldprefix' then 'newprefix' else get-prefix-from-QName(.), ':', get-local-name-from-QName(.))"/>
</xsl:template>

</xsl:stylesheet>

But got the following compiling errors:

Saxon 9.1.0.7J from Saxonica
Java version 1.5.0_06
Error at xsl:template on line 18 column 46 of renameNamespacesKay.xsl:
  XPST0081: XSLT Pattern syntax error at char 13 on line 18 in {attribute(*, xs:QName)}:
    Undeclared namespace prefix {xs}
Error at xsl:attribute on line 19 column 177 of renameNamespacesKay.xsl:
  XPST0017: XPath syntax error at char 36 on line 19 in {...ix-from-QName(.) = 'oldpref...}:
    Unknown system function get-prefix-from-QName()
Failed to compile stylesheet. 2 errors detected.
XSLT run finished

How can I complete the code successfully?

Thank you
Ben




On Mon, 21 Dec 2009 12:50:31 -0000, Michael Kay wrote:


>You need to do two things: (a) change the namespace nodes to use a different
>prefix, and (b) change the QName-valued attributes to use a different
>prefix.

>For (a):

><xsl:template match="*">
>  <xsl:element name="{local-name()}" namespace="{namespace-uri()}">
>    <xsl:for-each select="namespace::*">
>       <xsl:namespace name="{if (local-name() = 'oldprefix') then
>'newprefix' else local-name()}"
>            select="string(.)"/>
>       </
>    </
>    <xsl:apply-templates select="@*, node()"/>
>  </
></ 

>For (b)

><xsl:template match="attribute(*, xs:QName)">
>  <xsl:attribute name="{name()}" select="concat(if (get-prefix-from-QName(.)
>= 'oldprefix' then 'newprefix' else get-prefix-from-QName(.), ':',
>get-local-name-from-QName(.))"/>

>That's assuming a schema-aware transformation (using the schema-for-schemas)
>so you can detect the QName-valued attributes by type. The alternative is to
>match them all explicitly by name.

>Not tested (and probably has bugs) but I hope it suggests a way forward.

>Regards,

>Michael Kay
>http://www.saxonica.com/
>http://twitter.com/michaelhkay 


>> -----Original Message-----
>> From: Ben Stover [mailto:bxstover@xxxxxxxxxxx] 
>> Sent: 21 December 2009 12:36
>> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>> Subject: [xsl] How to change namespace prefixes in a import 
>> file hierarchy? Or at least append som pattern?
>> 
>> How to append a pattern to a namespace prefix? How to change 
>> a namespace prefix in a import file hierarchy?
>> 
>> Assume there is a directory (tree) of XSD schema files which 
>> start with ONE single "root" XSD schema file "root.xsd" and 
>> which in turn imports other, related XSD schema files.
>> 
>> Regarding the used, embedded namespaces and their prefix it 
>> looks like similar to:
>> 
>> root.xsd:
>> 
>> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";
>>      xmlns:mypref1="http://www.somedomain.com/foo/bar/";
>>      ...
>>      xmlns:other22="http://www.somedomain.com/blah/";
>>      ....>
>>      
>>      <xsd:import namespace="http://www.somedomain.com/foo/bar/"; 
>>                  schemaLocation="myfoobar/subschema1.xsd"/>
>>      ....
>>      <xsd:import namespace="http://www.somedomain.com/blah/";
>>                  schemaLocation="myblah/subschema22.xsd"/>
>>                  
>>      <xsd:element name="..."  type="mypref1:myelement111Type"/>
>>      <xsd:element name="..."  type="other22:myelement222Type"/>
>>      ...
>>      
>> 
>> Keep in mind that this is a simplified sample. In real life I 
>> could have a system of dozends of imports, hundreds of 
>> namespace prefixes and thousands of elements. 
>> 
>> Now I want to change all prefixes "mypref1" to "newpre7". I 
>> could this manually but due to the amount of occurencies and 
>> the necessary changes this is not feasible. 
>> Furthermore I dont want to use an text editor replace 
>> function because this could be ambigious and not much simpler.
>> 
>> I would like to use a XLST script which would do the job for 
>> me (after changing just a "from" and a "to" pattern inside 
>> this XSLT script.
>> 
>> Is this possible somehow?
>> 
>> All the prefix occurencies should be changed in the prefix 
>> definition and the usage places (e.g. <xsd:element>) in all 
>> files of the import hierarchy.
>> 
>> How can I do this?
>> 
>> If a pure change is not possible: Can I at least append some 
>> postfix to a prefix (e.g. add
>> 
>> from: mypref1
>> to:   mypref1new
>> 
>> Thank you
>> Ben