Moving and renaming contents of an XML node - xslt

Question

i am a newbie when it comes to XSLT translations, and have been searching with this question for a while, but did not find any answher to it. I have an XML file looking like this:
<item>
<code>I001</code>
<description>DEF</description>
<properties>
<line1>
<key>key 1</key>
<value>value 1</value>
</line1>
<line2>
<key>key 2</key>
<value>value 2</value>
</line2>
</properties>
</item>
The label-software that i need to process this data with does not cope with this kind of leveled xml, so i have to transform it to something like this
<?xml version="1.0" encoding="utf-8"?>
<item>
<code>I001</code>
<description>DEF</description>
<P1_key>key 1</P1_key>
<P1_value>value 1</P1_value>
<P2_key>key 1</P2_key>
<P2_value>value</P2_value>
</item>
So far i have come up with an xsl-file that looks like this:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"
>
<xsl:output method="xml" indent="yes"/>
<!-- Identity rule -->
<xsl:template match="node() | #*">
<xsl:copy>
<xsl:apply-templates />
</xsl:copy>
</xsl:template>
<!-- special rules ... -->
<xsl:template match="properties/line1/*">
<xsl:element name="P1_{local-name()}">
<xsl:apply-templates/>
</xsl:element>
</xsl:template>
<xsl:template match="properties/line2/*">
<xsl:element name="P2_{local-name()}">
<xsl:apply-templates/>
</xsl:element>
</xsl:template>
</xsl:stylesheet>
This does only partly what i need (renaming the elements), wit a result looking like this:
<?xml version="1.0" encoding="utf-8"?>
<item>
<code>I001</code>
<description>DEF</description>
<properties>
<line1>
<P1_key>key 1</P1_key>
<P1_value>value 1</P1_value>
</line1>
<line2>
<P2_key>key 1</P2_key>
<P2_value>value</P2_value>
</line2>
</properties>
</item>
What i now would like to now is how to move the renamed elements (P1_key, P1_value, P2_key, P2_value) to the level.
Any hints would be appreciated.
Thanks

Answer 1

How about:
XSLT 1.0
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
<xsl:template match="/item">
<xsl:copy>
<xsl:copy-of select="code | description"/>
<xsl:for-each select="properties/*/key">
<xsl:element name="P{position()}_key">
<xsl:value-of select="."/>
</xsl:element>
<xsl:element name="P{position()}_value">
<xsl:value-of select="following-sibling::value[1]"/>
</xsl:element>
</xsl:for-each>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
Or perhaps:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
<xsl:template match="/item">
<xsl:copy>
<xsl:copy-of select="code | description"/>
<xsl:for-each select="properties/*/key">
<xsl:variable name="line-num" select="substring-after(name(..), 'line')" />
<xsl:element name="P{$line-num}_key">
<xsl:value-of select="."/>
</xsl:element>
<xsl:element name="P{$line-num}_value">
<xsl:value-of select="following-sibling::value[1]"/>
</xsl:element>
</xsl:for-each>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
Of course, if there always will be exactly two lines, you could just spell it out:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
<xsl:template match="/item">
<xsl:copy>
<xsl:copy-of select="code | description"/>
<P1_key>
<xsl:value-of select="properties/line1/key" />
</P1_key>
<P1_value>
<xsl:value-of select="properties/line1/value" />
</P1_value>
<P2_key>
<xsl:value-of select="properties/line2/key" />
</P2_key>
<P2_value>
<xsl:value-of select="properties/line2/value" />
</P2_value>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
BTW, your method could work too, if you add another template:
<xsl:template match="properties | line1 | line2">
<xsl:apply-templates />
</xsl:template>