Append element to existing set

fixit · September 23rd, 2009, 11:43 AM

I have the following input xml and want to insert a new <ADDON> container with new elements inside. The input xml may have one or many <ADDON> containers already, in which case I want to add another <ADDON> container some static data. Can you assist?

Input XML:

Code:

<ROOT>
<MANYOTHERELEMENTS>
<PARENTOFADDON>
<ADDON>
<Aelement>ExisingData</Aelement>
</ADDON>
</PARENTOFADDON>
</MANYOTHERELEMENTS>
</ROOT>

Desired output xml:

Code:

<ROOT>
<MANYOTHERELEMENTS>
<PARENTOFADDON>
<ADDON>
<Aelement>ExisingData</Aelement>
</ADDON>
<ADDON>
<Aelement>MyData</Aelement>
</ADDON>
</PARENTOFADDON>
</MANYOTHERELEMENTS>
</ROOT>

Martin Honnen · September 23rd, 2009, 12:05 PM

You can simply use the identity transformation template

Code:

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

plus one template

Code:

<xsl:template match="PARENTOFADDON">
  <xsl:copy>
     <xsl:apply-templates select="@ | node()"/>
     <ADDON>
         <Aelement>MyData</Aelement>
     </ADDON>
   </xsl:copy>
</xsl:template>