XML parent child concatenation using XSLT

Question

INPUT XML :

<?xml version="1.0" encoding="ISO-8859-1"?>
<system>
<map name="Map">
    <map name="Map1">
        <color>Map1 is red colored</color>
        <shape>Map1 is square shaped</shape>
    </map>
    <map name="Map2">
        <color>Map2 is green colored</color>
        <map name="Tap1">
            <color>Tap1 is yellow colored</color>
            <speed>Tap1 is very fast</speed>
        </map>
        <map name="Tap2">
            <speed>Tap2 is very slow</speed>
        </map>
    </map>
</map>
</system>

DESIRED OUTPUT:

<?xml version="1.0" encoding="ISO-8859-1"?>
<system>
<map name="Map+Map1">
    <color>Map1 is red colored</color>
    <shape>Map1 is square shaped</shape>
</map>
<map name="Map+Map2">
    <color>Map2 is green colored</color>
</map>
<map name="Map+Map2+Tap1">
    <color>Tap1 is yellow colored</color>
    <speed>Tap1 is very fast</speed>
</map>
<map name="Map+Map2+Tap2">
    <speed>Tap2 is very slow</speed>
</map>

Current OUTPUT :

<system>
    <map name="Map1"/>
    <map name="Map1"/>
    <map name="Map2"/>  
    <map name="Map2.Tap1"/>
    <map name="Map2.Tap1"/>
    <map name="Map2.Tap2"/>
</system>

Current XSL Stylesheet :

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="map[@name]">
    <xsl:apply-templates mode="next">
       <xsl:with-param name="name" select="''" />
    </xsl:apply-templates>
</xsl:template>

<xsl:template match="map[@name]" mode="next">
    <xsl:param name="name" />
    <xsl:apply-templates mode="next">
    <xsl:with-param name="name" select="concat($name,'.',@name)" />
    </xsl:apply-templates>
</xsl:template>


<xsl:template match="*[not(*)]" mode="next">
    <xsl:param name="name" />
    <xsl:element name="map">
    <xsl:attribute name="name">
        <xsl:variable name="nameLength" select="string-length($name)-1"/>
            <xsl:value-of select="substring($name,2,$nameLength)"/>
    </xsl:attribute>
    </xsl:element>
</xsl:template>

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

</xsl:stylesheet>

I am just a beginner in XSL. I referred a lot online and tried to solve this problem. But i was failed. Somebody please help me to get the right xsl code for achieving the same. Please.

Answer 1

You may try something like this:

<?xml version="1.0" encoding="utf-8" ?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" indent="yes"/>
    <xsl:template match="map" mode="concat" >
        <xsl:param name="names" select="''" />
        <xsl:variable name="newName" select="concat($names,@name)" />
        <xsl:copy>
            <xsl:attribute name ="name">
                <xsl:value-of select="$newName"/>
            </xsl:attribute>
            <xsl:copy-of select="*[name() != 'map']"/>
        </xsl:copy>
        <xsl:apply-templates select="map" mode ="concat">
            <xsl:with-param name="names" select="concat($newName,'+')" />
        </xsl:apply-templates>

    </xsl:template>

    <xsl:template match="*" >
        <xsl:copy>
            <xsl:apply-templates select="map" />
        </xsl:copy>
    </xsl:template>
    <xsl:template match="/*/map">
        <xsl:apply-templates select="map" mode="concat">
            <xsl:with-param name ="names" select="concat(@name,'+')" />
        </xsl:apply-templates>  
    </xsl:template>

</xsl:stylesheet>

In this small example the mode my not be necessary but would be helpful if the xlst file grows. Otuput:

<?xml version="1.0"?>
<system>
  <map name="Map+Map1">
    <color>Map1 is red colored</color>
    <shape>Map1 is square shaped</shape>
  </map>
  <map name="Map+Map2">
    <color>Map2 is green colored</color>
  </map>
  <map name="Map+Map2+Tap1">
    <color>Tap1 is yellow colored</color>
    <speed>Tap1 is very fast</speed>
  </map>
  <map name="Map+Map2+Tap2">
    <speed>Tap2 is very slow</speed>
  </map>
</system>

Answer 2

Here's another 1.0 option...

XML Input

<map name="Map">
    <map name="Map1">
        <color>Map1 is red colored</color>
        <shape>Map1 is square shaped</shape>
    </map>
    <map name="Map2">
        <color>Map2 is green colored</color>
        <map name="Tap1">
            <color>Tap1 is yellow colored</color>
            <speed>Tap1 is very fast</speed>
        </map>
        <map name="Tap2">
            <speed>Tap2 is very slow</speed>
        </map>
    </map>
</map>

XSLT 1.0

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

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

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

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

    <xsl:template match="map[*[not(self::map)]]">
        <xsl:copy>
            <xsl:apply-templates select="@*"/>
            <xsl:attribute name="name">
                <xsl:for-each select="ancestor-or-self::map[@name]">
                    <xsl:if test="ancestor::map[@name]">+</xsl:if>
                    <xsl:value-of select="@name"/>
                </xsl:for-each>
            </xsl:attribute>
            <xsl:apply-templates select="node()[not(self::map)]"/>
        </xsl:copy>
        <xsl:apply-templates select="map"/>
    </xsl:template>

</xsl:stylesheet>

XML Output

<system>
   <map name="Map+Map1">
      <color>Map1 is red colored</color>
      <shape>Map1 is square shaped</shape>
   </map>
   <map name="Map+Map2">
      <color>Map2 is green colored</color>
   </map>
   <map name="Map+Map2+Tap1">
      <color>Tap1 is yellow colored</color>
      <speed>Tap1 is very fast</speed>
   </map>
   <map name="Map+Map2+Tap2">
      <speed>Tap2 is very slow</speed>
   </map>
</system>

Also, if you can use XSLT 2.0, you can replace the xsl:attribute with this:

<xsl:attribute name="name" select="string-join(ancestor-or-self::map/@name,'+')"/>