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Tuesday, February 16, 2016

Useful xslt code

How to convert XML list into comma seperated list


 <xsl:for-each select="/ns0:UserId">
            <xsl:text>'</xsl:text>
            <xsl:value-of select="."/>
            <xsl:text>'</xsl:text>
            <xsl:if test="position() != last()">
              <xsl:text>,</xsl:text>
            </xsl:if>
          </xsl:for-each>

Example:

<UserId>1</UserId>
<UserId>2</UserId>
<UserId>3</UserId>

Into
'1','2','3'


How to strip of empty elements from xml


This xslt code work with any XML types, so it could be saved in a common location and used everywhere.

<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" exclude-result-prefixes="fn xs">
        <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
        <xsl:template match="node()|@*">
                <xsl:if test="normalize-space(string(.)) != ''">
                        <xsl:copy>
                                <xsl:apply-templates select="node()|@*"/>
                        </xsl:copy>
                </xsl:if>
        </xsl:template>
</xsl:stylesheet>


How to find distinct values and group in XSLT

This xslt will groups the xml elements by distinct UserID

 <xsl:key name="UserId" match="/ns0:queryResponse/ns0:QueryResults/ns0:records/ns0:UserId/text()"
           use="."/>
  <xsl:template match="/">
    <tns:TransformationResults>
      <xsl:for-each select="/ns0:queryResponse/ns0:QueryResults/ns0:records/ns0:UserId/text()[generate-id() = generate-id(key('UserId',.)[1])]">
        <tns:User>
          <tns:UserId>
            <xsl:value-of select="."/>
          </tns:UserId>
          <xsl:call-template name="getResponsibility">
            <xsl:with-param name="UserId" select="."/>
            <xsl:with-param name="records" select="/ns0:queryResponse/ns0:QueryResults/ns0:records"/>
          </xsl:call-template>
        </tns:User>
      </xsl:for-each>
    </tns:TransformationResults>
  </xsl:template>
  <xsl:template name="getResponsibility">
    <xsl:param name="UserId"/>
    <xsl:param name="records"/>
    <xsl:for-each select="$records[ns0:UserId/text() = $UserId]">
      <tns:Responsibility>
        <tns:ResponsibilityId>
          <xsl:value-of select="ns0:rId"/>
        </tns:ResponsibilityId>
        <tns:ResponsibilityName>
          <xsl:value-of select="ns0:rName"/>
        </tns:ResponsibilityName>
      </tns:Responsibility>
    </xsl:for-each>
  </xsl:template>
 

Input 


<records>
<UserId>1</UserId>
<rId>1001</rId>
<rName>Responsibility1</rName>
</records>
<records>
<UserId>1</UserId>
<rId>1002</rId>
<rName>Responsibility2</rName>
</records>
<records>
<UserId>2</UserId>
<rId>1001</rId>
<rName>Responsibility1</rName>
</records>
<records>
<UserId>2</UserId>
<rId>1002</rId>
<rName>Responsibility2</rName>
</records>

Output

<TransformationResults>
<User>
<UserId>1</UserId>
<Responsibility>
<ResponsibilityId>1001</ResponsibilityId>
<ResponsibilityName>Responsibility1</ResponsibilityName>
</Responsibility>
<Responsibility>
<ResponsibilityId>1002</ResponsibilityId>
<ResponsibilityName>Responsibility2</ResponsibilityName>
</Responsibility>
</User>
<User>
<UserId>2</UserId>
<Responsibility>
<ResponsibilityId>1001</ResponsibilityId>
<ResponsibilityName>Responsibility1</ResponsibilityName>
</Responsibility>
<Responsibility>
<ResponsibilityId>1002</ResponsibilityId>
<ResponsibilityName>Responsibility2</ResponsibilityName>
</Responsibility>
</User>
</TransformationResults>



List out all the XML elements

I needed this for XSD documentation work. Generate a sample XML from the xsd and use that as  input to this xslt. It prints out all the elements in xpath format relative to root element.

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

    <xsl:output method="text" indent="no" />

    <xsl:template match="*[not(*)]">
   <xsl:text>response</xsl:text>
        <xsl:for-each select="ancestor-or-self::*">
            <xsl:value-of select="concat('.', substring-after(name(),':'))"/>

            <xsl:if test="count(preceding-sibling::*[name() = name(current())]) != 0">
                <xsl:value-of select="concat('[', count(preceding-sibling::*[name() = name(current())]) + 1, ']')"/>
            </xsl:if>
        </xsl:for-each>
        <xsl:text>&#xA;</xsl:text>
        <xsl:apply-templates select="*"/>
    </xsl:template>

    <xsl:template match="*">
        <xsl:apply-templates select="*"/>
    </xsl:template>

</xsl:stylesheet>
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