Rush, hopefully you'll find better answers, but here's my first pass. I
modified the "identity transform" to filter out z and non-first y's. You'll
have to tweak it to account for "contained within 'c'". You may wrap up in
a variable as needed.
Also, I assume when you mean to discard <z> elements, you also mean to
discard any of its descendents.
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0">
<xsl:output method="xml"/>
<xsl:template match="node( ) | @*">
<xsl:if test="name() != 'z' and not (name() = 'y' and preceding::y)">
<xsl:copy>
<xsl:apply-templates select="@* | node( )"/>
</xsl:copy>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
Regards,
--A
From: Rush Manbert <rush(_at_)manbert(_dot_)com>
Reply-To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] How to create a node set that excludes some descendant
elements?
Date: Mon, 11 Apr 2005 16:57:24 -0700
Hi all,
My first post here and I want to start by saying how much I appreciate the
big FAQ, the Jeni site, etc. It has all helped me tremendously.
I can't find an answer to this one, though, so here goes...
My XML doc has this basic structure:
<a>
<b>
<c>
<!-- This is the section of interest -->
</c>
</b>
</a>
The <c> element can contain any combination of elements <d> through <z>.
Elements <y> and <z> have special uses.
I want to create a global variable that contains the result tree fragment
contained within element <c>, with the following restrictions:
I only want to include the first <y> element that is contained within <c>,
no matter where it occurs. There may be no <y> elements present.
I want to exclude all <z> elements that are contained within <c>, no matter
where they occur. Again, there may be none present.
Later on in my stylesheet, I use exslt:node-set() on the variable and
process the node set.
For instance, given this source:
<a><b><c>
<d>
<z>
<g />
</d>
<q>
<r>
<y />
<z />
</r>
<y />
<q>
<y>
</c></b></a>
I want the selection to contain this:
<a><b><c>
<d>
<g />
</d>
<q>
<r>
<y />
</r>
<q>
</c></b></a>
(<z> elements are gone, only the first <y> element remains.)
I have tried many variations on the select portion of the variable
definition. I can filter the immediate children of <c>, OR the second level
children, etc., but I can't seem to come up with anything that handles <y>
and <z> appearing at any depth in the descendant tree.
I'm prepared to be humiliated by some obvious solution... Can anyone please
help?
Thanks,
Rush
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