Heiko Niemann wrote:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="2.0">
<xsl:output method="xml" encoding="UTF-8"/>
<xsl:template match="/root/base/data">
<xsl:copy>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
<xsl:template match="/root/base/data/*">
<xsl:variable name="var.update" select="/root/update/data/*[name() =
current()/name()]"/>
<xsl:choose>
<xsl:when test="exists($var.update)">
<xsl:copy-of select="$var.update"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="."/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="text()"/>
</xsl:stylesheet>
output:
<data>
<first>John</first>
<last>Doe</last>
<dob>1977-12-20</dob>
<zip>90210</zip>
<phone>(555) 229 8811</phone>
<mobile/>
<email>john(_at_)google(_dot_)com</email>
</data>
Does that stylesheet you posted really output the above nicely indented
document? I think because of the empty template for text() nodes you
lose the indentation.
So base/data and update/data are merged. Each element in base/data is
copied unless the same element exists in update/data; then it will be
overwritten.
Since I just want the modified base/data branch as output I have to get
rid of whatever the built-in template rules produces. After some research
I found that <xsl:template match="text()"/> is the easiest solution. But
in one post the author said that this was not such a good idea.
Unfortunately I did not bookmark it.
Your stylesheet relies on built-in templates to process the branch you
are interested and then suppresses any output from other branches.
You could instead write a template for the root node that ensures only
the branch you are interested in is processed, then you don't need to
suppress output from other branches.
And you could use a key to find the update stuff:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="2.0">
<xsl:output method="xml" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:key name="k1" match="/root/update/data/*" use="node-name(.)"/>
<xsl:template match="/">
<xsl:apply-templates select="root/base/data"/>
</xsl:template>
<xsl:template match="/root/base/data">
<xsl:copy>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
<xsl:template match="/root/base/data/*">
<xsl:variable name="var.update" select="key('k1', node-name(.))"/>
<xsl:choose>
<xsl:when test="exists($var.update)">
<xsl:copy-of select="$var.update"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="."/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
--
Martin Honnen
http://msmvps.com/blogs/martin_honnen/
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