change the xlmns value without modifying the prefix using xslt (with built in templates) - xslt-2.0

Question

Source XML Document:
<?xml version="1.0" encoding="UTF-8"?>
<PREMIS:premis xmlns:PREMIS="info:lc/xmlns/premis-v2" version="2.2">
<PREMIS:object xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="PREMIS:file">
<PREMIS:objectIdentifier>
<PREMIS:objectIdentifierType>Docuteam</PREMIS:objectIdentifierType>
<PREMIS:objectIdentifierValue>_20161027171024801</PREMIS:objectIdentifierValue>
</PREMIS:objectIdentifier>
<PREMIS:objectCharacteristics>
<PREMIS:compositionLevel>0</PREMIS:compositionLevel>
<PREMIS:fixity>
<PREMIS:messageDigestAlgorithm>SHA-512</PREMIS:messageDigestAlgorithm>
<PREMIS:messageDigest>2b9be7ebeae4135b0002cfcd7ee4ee2f5d93e80bfabebf6d5d409e504ad1cbd920487f56726362c2a2979b68d96b1c26f37a73e68c30dd9f8cf11502c634ff5a</PREMIS:messageDigest>
</PREMIS:fixity>
<PREMIS:size>32783388</PREMIS:size>
<PREMIS:format>
<PREMIS:formatDesignation>
<PREMIS:formatName>Tagged Image File Format</PREMIS:formatName>
</PREMIS:formatDesignation>
<PREMIS:formatRegistry>
<PREMIS:formatRegistryName>PRONOM</PREMIS:formatRegistryName>
<PREMIS:formatRegistryKey>fmt/353</PREMIS:formatRegistryKey>
</PREMIS:formatRegistry>
</PREMIS:format>
</PREMIS:objectCharacteristics>
<PREMIS:originalName xmlns:xlink="http://www.w3.org/1999/xlink" xlink:type="simple"
>12448399.tif</PREMIS:originalName>
</PREMIS:object>
<PREMIS:event>
<PREMIS:eventIdentifier>
<PREMIS:eventIdentifierType>Docuteam</PREMIS:eventIdentifierType>
<PREMIS:eventIdentifierValue>_20161027171025082</PREMIS:eventIdentifierValue>
</PREMIS:eventIdentifier>
<PREMIS:eventType>Creation</PREMIS:eventType>
<PREMIS:eventDateTime>2016-10-27T17:10:25</PREMIS:eventDateTime>
<PREMIS:eventDetail>Performed by: &apos;INGEST-01$&apos;</PREMIS:eventDetail>
<PREMIS:eventOutcomeInformation>
<PREMIS:eventOutcome>Success</PREMIS:eventOutcome>
</PREMIS:eventOutcomeInformation>
<PREMIS:linkingObjectIdentifier xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:type="simple">
<PREMIS:linkingObjectIdentifierType>Docuteam</PREMIS:linkingObjectIdentifierType>
<PREMIS:linkingObjectIdentifierValue>_20161027171024801</PREMIS:linkingObjectIdentifierValue>
</PREMIS:linkingObjectIdentifier>
</PREMIS:event>
<PREMIS:event>
<PREMIS:eventIdentifier>
<PREMIS:eventIdentifierType>Docuteam</PREMIS:eventIdentifierType>
<PREMIS:eventIdentifierValue>_20161027171031973</PREMIS:eventIdentifierValue>
</PREMIS:eventIdentifier>
<PREMIS:eventType>Fixity Check</PREMIS:eventType>
<PREMIS:eventDateTime>2016-10-27T17:10:31</PREMIS:eventDateTime>
<PREMIS:eventDetail>Based on sa_ub-erara-01_dss-01. Performed by:
&apos;INGEST-01$&apos;</PREMIS:eventDetail>
<PREMIS:eventOutcomeInformation>
<PREMIS:eventOutcome>Success</PREMIS:eventOutcome>
</PREMIS:eventOutcomeInformation>
<PREMIS:linkingObjectIdentifier xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:type="simple">
<PREMIS:linkingObjectIdentifierType>Docuteam</PREMIS:linkingObjectIdentifierType>
<PREMIS:linkingObjectIdentifierValue>_20161027171024801</PREMIS:linkingObjectIdentifierValue>
</PREMIS:linkingObjectIdentifier>
</PREMIS:event>
</PREMIS:premis>
My XSLT:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:PREMIS="info:lc/xmlns/premis-v2"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:xlink="http://www.w3.org/1999/xlink" xlink:type="simple"
>
<xsl:output method="xml"/>
<xsl:template match="/">
<rdf:RDF>
<xsl:value-of select="'
'"/>
<xsl:value-of select="'
'"/>
<xsl:apply-templates/>
</rdf:RDF>
</xsl:template>
<xsl:template match="PREMIS:premis">
<xsl:apply-templates select="PREMIS:object"/>
<xsl:value-of select="'
'"/>
<xsl:apply-templates select="PREMIS:event"/>
<xsl:value-of select="'
'"/>
</xsl:template>
<xsl:template match="PREMIS:object">
<!-- Verknüpfung zwischen Fedora- und PREMIS-Objekt -->
<!-- Der Identifikator des Fedoraobjektes "info:fedora/CH-001898-1:X" ist nicht im PREMIS-XML gespeichert, sondern muss irgendwie extern eingefügt werden -->
<rdf:Description rdf:about="info:fedora/CH-001898-1:7">
<PREMIS:hasObject><xsl:value-of select="PREMIS:objectIdentifier/PREMIS:objectIdentifierValue"/></PREMIS:hasObject>
</rdf:Description>
<xsl:value-of select="'
'"/>
<!-- PREMIS:object -->
<!-- Ebene1 -->
<rdf:Description>
<xsl:attribute name="rdf:about">
<xsl:value-of select="PREMIS:objectIdentifier/PREMIS:objectIdentifierValue"/>
</xsl:attribute>
<PREMIS:hasIdentifier><xsl:value-of select="PREMIS:objectIdentifier/PREMIS:objectIdentifierValue"/><xsl:text>objectIdentifier</xsl:text></PREMIS:hasIdentifier>
<PREMIS:hasOriginalName><xsl:value-of select="PREMIS:originalName"/></PREMIS:hasOriginalName>
</rdf:Description>
<xsl:value-of select="'
'"/>
<!-- Ebene2 -->
<rdf:Description>
<xsl:attribute name="rdf:about">
<xsl:value-of select="PREMIS:objectIdentifier/PREMIS:objectIdentifierValue"/><xsl:text>objectIdentifier</xsl:text></xsl:attribute>
<PREMIS:hasIdentifierType><xsl:value-of select="PREMIS:objectIdentifier/PREMIS:objectIdentifierType"/></PREMIS:hasIdentifierType>
<PREMIS:hasIdentifierValue><xsl:value-of select="PREMIS:objectIdentifier/PREMIS:objectIdentifierValue"/></PREMIS:hasIdentifierValue>
</rdf:Description>
<xsl:value-of select="'
'"/>
</xsl:template>
<!-- Events -->
<!-- Ebene1 -->
<xsl:template match="PREMIS:event">
<rdf:Description>
<xsl:attribute name="rdf:about">
<xsl:value-of select="PREMIS:eventIdentifier/PREMIS:eventIdentifierValue"/></xsl:attribute>
<PREMIS:hasIdentifier><xsl:value-of select="PREMIS:eventIdentifier/PREMIS:eventIdentifierValue"/></PREMIS:hasIdentifier>
<PREMIS:EventDateTime><xsl:value-of select="PREMIS:eventDateTime"/></PREMIS:EventDateTime>
<PREMIS:EventDetail><xsl:value-of select="PREMIS:eventDetail"/></PREMIS:EventDetail>
<PREMIS:hasEventOutcomeInformation><xsl:value-of select="PREMIS:eventIdentifier/PREMIS:eventIdentifierValue"/><xsl:text>eventOutcomeInformation</xsl:text></PREMIS:hasEventOutcomeInformation>
<PREMIS:hasEventLinkingObjectIdentifier><xsl:value-of select="PREMIS:eventIdentifier/PREMIS:eventIdentifierValue"/><xsl:text>eventLinkingObjectIdentifier</xsl:text></PREMIS:hasEventLinkingObjectIdentifier>
</rdf:Description>
<xsl:value-of select="'
'"/>
<!-- Ebene2 -->
<rdf:Description>
<xsl:attribute name="rdf:about">
<xsl:value-of select="PREMIS:eventIdentifier/PREMIS:eventIdentifierValue"/><xsl:text>eventIdentifier</xsl:text></xsl:attribute>
<PREMIS:hasIdentifierType><xsl:value-of select="PREMIS:eventIdentifier/PREMIS:eventIdentifierType"/></PREMIS:hasIdentifierType>
<PREMIS:hasIdentifierValue><xsl:value-of select="PREMIS:eventIdentifier/PREMIS:eventIdentifierValue"/></PREMIS:hasIdentifierValue>
</rdf:Description>
<xsl:value-of select="'
'"/>
<rdf:Description>
<xsl:attribute name="rdf:about">
<xsl:value-of select="PREMIS:eventIdentifier/PREMIS:eventIdentifierValue"/><xsl:text>eventOutcomeInformation</xsl:text></xsl:attribute>
<PREMIS:hasEventOutcome><xsl:value-of select="PREMIS:eventOutcomeInformation/PREMIS:eventOutcome"/></PREMIS:hasEventOutcome>
</rdf:Description>
<xsl:value-of select="'
'"/>
<rdf:Description>
<xsl:attribute name="rdf:about">
<xsl:value-of select="PREMIS:eventIdentifier/PREMIS:eventIdentifierValue"/><xsl:text>eventLinkingObjectIdentifier</xsl:text></xsl:attribute>
<PREMIS:linkingObjectIdentifierType><xsl:value-of select="PREMIS:linkingObjectIdentifier/PREMIS:linkingObjectIdentifierType"/></PREMIS:linkingObjectIdentifierType>
<PREMIS:hasLinkingObjectIdentifierValue><xsl:value-of select="PREMIS:linkingObjectIdentifier/PREMIS:linkingObjectIdentifierValue"/></PREMIS:hasLinkingObjectIdentifierValue>
</rdf:Description>
<xsl:value-of select="'
'"/>
</xsl:template>
</xsl:stylesheet>
In the output xml document I want the value of xmlns:PREMIS to be changed to "http://www.loc.gov/premis/rdf/v1#". So the opening root element should look like this:
<rdf:RDF xmlns:PREMIS="info:lc/xmlns/premis-v2"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:xlink="http://www.w3.org/1999/xlink">
I've tried several things, also posts I've discovered in here. But I don't get it. Any ideas? Thanks.
Post-Process XSLT:
<?xml version="1.0"?>
<!-- sample_2.xsl -->
<xsl:stylesheet version="2.0"
exclude-result-prefixes="PREMIS"
xmlns:PREMIS="info:lc/xmlns/premis-v2"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:xlink="http://www.w3.org/1999/xlink" xlink:type="simple"
>
<xsl:template match="*">
<xsl:copy>
<xsl:copy-of select="namespace::* except namespace::PREMIS"/>
<xsl:namespace name="PREMIS" select="'http://www.loc.gov/premis/rdf/v1#'"/>
<xsl:copy-of select="#*"/>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
<xsl:template match="PREMIS:*">
<xsl:element name="PREMIS:{local-name()}" namespace="http://www.loc.gov/premis/rdf/v1#">
<xsl:copy-of select="namespace::* except namespace::PREMIS"/>
<xsl:copy-of select="#*"/>
<xsl:apply-templates/>
</xsl:element>
</xsl:template></xsl:stylesheet>

Answer 1

I'm assuming that your desired output is a typo, and that you actually want this:
<rdf:RDF xmlns:PREMIS="http://www.loc.gov/premis/rdf/v1#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:xlink="http://www.w3.org/1999/xlink">
...
</rdf:RDF>
In your stylesheet, using the same prefix PREMIS to refer to different namespaces depending on whether you are reading or writing is going to be extremely difficult. Does the prefix in the output really have to be PREMIS, or will some other prefix do? If it does have to be the same (and perhaps anyway) I think my preferred approach would be to post-process the output using:
<xsl:stylesheet exclude-result-prefixes="PREMIS"...>
<xsl:template match="*">
<xsl:copy>
<xsl:copy-of select="namespace::* except namespace::PREMIS"/>
<xsl:namespace name="PREMIS" select="'http://www.loc.gov/premis/rdf/v1#'"/>
<xsl:copy-of select="#*"/>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
<xsl:template match="PREMIS:*">
<xsl:element name="PREMIS:{local-name()}" namespace="http://www.loc.gov/premis/rdf/v1#">
<xsl:copy-of select="namespace::* except namespace::PREMIS"/>
<xsl:copy-of select="#*"/>
<xsl:apply-templates/>
</xsl:element>
</xsl:template>