Eddy C wrote:
I'm trying to strip an XML document of unwanted nodes such that in the
example below I would keep all the parent nodes of a child node I
wanted and for other parents which do not have the child requested they
would be stripped.
I understand I could use XSLT but I'm doing this in java and was
wondering if there was a preferred approach out there.
Before
<a>
<b>
<c>fdfdsf</c>
</b>
<b>
<x>dffsd</x>
</b>
<b>
<x>dffsd</x>
<c>fdfdsf</c>
</b>
</a>
After requesting to keep child c
<a>
<b>
<c>fdfdsf</c>
</b>
<b>
<c>fdfdsf</c>
</b>
</a>
XSLT is easier to use for this, IMHO:
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="xml"/>
<xsl:param name="keep"/>
<xsl:template match="*">
<!-- check current element, descendants, and siblings -->
<xsl:variable name="matches">
<xsl:for-each select=".|descendant::*|../*">
<xsl:if test="name()=$keep">
<xsl:text>Y</xsl:text>
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:if test="$matches!=''">
<xsl:copy>
<xsl:apply-templates/>
</xsl:copy>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
There's probably a more elegant way, but my brain stopped working an hour
ago.
///Peter
