XSLT 2.0 Modifying element values based on an external xml file

Question

I'm trying to replace/modify some of the text nodes in an XML document by matching them with an elements attribute in an external file.

That's my XML File:

<root>
    <level_1>
        <item_1>xxxxx</item_1>
        <item_2>yyyyy</item_2>
        <item_3>zzzzz</item_3>
    </level_1>
</root>

XSLT code:

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:functx="http://www.functx.com">
    <xsl:param name="additionalInfoPath"/>
    <xsl:output indent="yes" />
    <xsl:function name="functx:contains-any-of" as="xs:boolean" 
              xmlns:functx="http://www.functx.com" >
  <xsl:param name="arg" as="xs:string?"/> 
  <xsl:param name="searchStrings" as="xs:string*"/> 

  <xsl:sequence select=" 
   some $searchString in $searchStrings
   satisfies contains($arg,$searchString)
 "/>
</xsl:function>
    <xsl:variable name="additionalInfo" select="doc($additionalInfoPath)"/>
    <xsl:template match="@* | node()">
        <xsl:copy>
            <xsl:apply-templates select="@* | node()"/>
        </xsl:copy>
    </xsl:template>
    <xsl:template match="*[functx:contains-any-of(string-join(ancestor-or-self::*/upper-case(local-name()),'/'),$additionalInfo//AdditionalInfoData[@Type='ExtraInfo']/InfoDataValue/@TargetElement)]/text()">
                <xsl:value-of select="$additionalInfo//AdditionalInfoData[@Type='ExtraInfo']/InfoDataValue[contains(string-join(current()/ancestor-or-self::*/upper-case(local-name()),'/'),@TargetElement)]/text()"/>
    </xsl:template>
</xsl:stylesheet>

And the external XML document providing the values to for replacing:

  <AdditionalInfoRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <AdditionalInfoData Type="ExtraInfo">
    <InfoDataValue Name="ITEM_1" TargetElement="ITEM_1" TargetElementValue="">111111</InfoDataValue>
    <InfoDataValue Name="LEVEL_1$ITEM_3" TargetElement="LEVEL_1/ITEM_3" TargetElementValue="">333333</InfoDataValue>
  </AdditionalInfoData>
</AdditionalInfoRoot>

Note that in the external document the name of the target elements are in upper case and I don't have control over that, and I need to use contains in a full xpath to the root because of things like "LEVEL_1/ITEM_3".

This solution is working but it's somehow cumbersome and I think there must be a better solution I'm not able to devise...

Any suggestions or hints to improve this are very welcome!

Thxs Vlax

So, what is the wanted result from the transformation? Please, edit the question and provide this. — Dimitre Novatchev
@Dimitre: Thanks for answer you got the result right, sorry for the delayed answer. — Vlax

Dimitre Novatchev Dimitre Novatchev · Accepted Answer · 2012-08-11T16:09:44

This might be simpler:

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

 <xsl:variable name="vLookupDoc">
   <t>
     <e path="ITEM_1">111111</e>
     <e path="LEVEL_1/ITEM_3">333333</e>
   </t> 
 </xsl:variable>

 <xsl:template match="node()[not(self::text())]|@*">
   <xsl:copy>
     <xsl:apply-templates select="node()|@*"/>
   </xsl:copy>
 </xsl:template>

 <xsl:template match="text()">
  <xsl:variable name="vRep" select=
   "$vLookupDoc/*/e
      [ends-with(
        string-join(current()/ancestor::*[parent::*]/lower-case(name(.)), '/'),
        lower-case(@path)
                 )
      ]
       /string(.)
   "/>

   <xsl:sequence select="(., $vRep)[last()]"></xsl:sequence>
 </xsl:template>
</xsl:stylesheet>

When this transformation is applied on the provided XML document:

<root>
    <level_1>
        <item_1>xxxxx</item_1>
        <item_2>yyyyy</item_2>
        <item_3>zzzzz</item_3>
    </level_1>
</root>

the wanted, correct result is produced:

<root>
      <level_1>
            <item_1>111111</item_1>
            <item_2>yyyyy</item_2>
            <item_3>333333</item_3>
      </level_1>
</root>

XSLT 2.0 Modifying element values based on an external xml file

1 Answers