Question
I am trying to swap the values for elements name and cmt in a GPX file (XML) using an xslt.
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<gpx xmlns="http://www.topografix.com/GPX/1/1" creator="GPS TrackMaker" version="1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd">
<metadata>
<link href="http://www.trackmaker.com">
<text>Geo Studio Tecnology Ltd</text>
</link>
<time>2012-06-29T21:53:25Z</time>
<bounds minlat="37.772562" minlon="-124.550080" maxlat="49.323978" maxlon="-122.404474"/>
</metadata>
<wpt lat="46.189580000" lon="-123.824460000">
<ele>0.000000</ele>
<name>G02010</name>
<cmt>Columbia River Maritime Museum</cmt>
<desc>Columbia River Maritime Museum</desc>
<sym>Museum</sym>
</wpt>
<wpt lat="46.189010000" lon="-123.824370000">
<ele>0.000000</ele>
<name>G02020</name>
<cmt>Marine Dr/17th St</cmt>
<desc>Marine Dr/17th St</desc>
<sym>Waypoint</sym>
</wpt>
</gpx>
After transformation:
...
<name>Columbia River Maritime Museum</name>
<cmt>G02010</cmt>
...
Can someone please show the correct xslt for this? Thanks.
Solution
Use the Identity Transform with an override for those elements' values:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:gpx="http://www.topografix.com/GPX/1/1">
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="gpx:name/text()">
<xsl:value-of select="../../gpx:cmt/text()"/>
</xsl:template>
<xsl:template match="gpx:cmt/text()">
<xsl:value-of select="../../gpx:name/text()"/>
</xsl:template>
</xsl:stylesheet>
Note that you could also match the elements directly (instead of their text()
) if your actual needs (or source input) are more complicated.
That would look something like this:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:gpx="http://www.topografix.com/GPX/1/1">
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="gpx:name">
<xsl:copy>
<xsl:apply-templates select="@*|../gpx:cmt/text()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="gpx:cmt">
<xsl:copy>
<xsl:apply-templates select="@*|../gpx:name/text()"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
This is a slightly more general solution, but the first is sufficient, given the input you've provided.
Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow