Alex Rivera | Logout

XSLT to remove tags/attributes belonging to a namespace

Asked 2011-06-10T20:43:39.667
10

I'm trying to use XSLT to remove tags/attributes belonging to a namespace. The difficulty is that tags from differnt namespaces can be embedded in each other.

Sample:

<?xml version="1.0" encoding="utf-8"?>
<Collection xmlns="http://s0" xmlns:ns1="http://s1">
  <Identifier Name="CollectionX"
          ns1:GlobalID="{E436833B-B0A6-4E0D-804B-60052B767AE3}"
          ns1:LocalID="{0130C866-7A91-4544-A82B-E0C0F2E3BCB2}"  />

  <Properties>
    <ns1:Collectible>1982</ns1:Collectible>
    <Displayed>Reserved</Displayed>
    <Picture>Reserved.jpeg</Picture>
  </Properties>

  <WeakLinks>
    <Link Type="resource" Language="en-us"/>
  </WeakLinks>

</Collection>

I want to filter all tags/properties that do not belong to ns1 as long as they do not have any ns1 children.

So the result should be:

<?xml version="1.0" encoding="utf-8"?>
<Collection xmlns="http://s0" xmlns:ns1="http://s1">
  <Identifier 
      ns1:GlobalID="{E436833B-B0A6-4E0D-804B-60052B767AE3}"
      ns1:LocalID="{0130C866-7A91-4544-A82B-E0C0F2E3BCB2}"  />

  <Properties>
    <ns1:Collectible>1982</ns1:Collectible>
  </Properties>

</Collection>

How can I accoplish this with XSLT? Any help?

xslt
Edit
Report

1 Answer

6

This transformation:

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:ns1="http://s1">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

 <xsl:template match="node()|@*">
  <xsl:copy>
   <xsl:apply-templates select="node()|@*"/>
  </xsl:copy>
 </xsl:template>

 <xsl:template match=
 "*[not(attribute::ns1:*)
  and
    not(descendant-or-self::ns1:*)
   ]
 |
  @*[not(namespace-uri()='http://s1')]
 "/>
</xsl:stylesheet>

when applied on the provided XML document:

<Collection xmlns="http://s0" xmlns:ns1="http://s1">
    <Identifier Name="CollectionX"
      ns1:GlobalID="{E436833B-B0A6-4E0D-804B-60052B767AE3}"
      ns1:LocalID="{0130C866-7A91-4544-A82B-E0C0F2E3BCB2}"  />
    <Properties>
        <ns1:Collectible>1982</ns1:Collectible>
        <Displayed>Reserved</Displayed>
        <Picture>Reserved.jpeg</Picture>
    </Properties>
    <WeakLinks>
        <Link Type="resource" Language="en-us"/>
    </WeakLinks>
</Collection>

produces the wanted, correct result:

<Collection xmlns="http://s0" xmlns:ns1="http://s1">
   <Identifier ns1:GlobalID="{E436833B-B0A6-4E0D-804B-60052B767AE3}"
   ns1:LocalID="{0130C866-7A91-4544-A82B-E0C0F2E3BCB2}"/>
   <Properties>
      <ns1:Collectible>1982</ns1:Collectible>
   </Properties>
</Collection>

Explanation:

  1. The identity rule (template) copies every node "as-is".

  2. There is just one template overriding the identity rule. This templates has no body -- meaning that it effectively filters (deletes) any matched node from being copied to the output. T

answered 2011-06-11T03:00:57.187

Your Answer