Thanks Wendell!
Suppose I wanted to stop at a given node or after a certain number of
ancestors. What would I do to tweak your original solution?
From: Wendell Piez <wapiez(_at_)mulberrytech(_dot_)com>
Reply-To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] Iterating over all the Ancestors
Date: Tue, 26 Nov 2002 13:47:50 -0500
Bix,
Walking up the tree is easy:
<xsl:for-each select="ancestor::*">
walks all the elements up to the root (but not including it: it's not an
element). You can include the context node itself by using the
ancestor-or-self:: axix.
So in your case
<xsl:template match="data">
<xsl:for-each select="ancestor-or-self::*">
<xsl:if test="ancestor::*">
<!-- if the ancestor element has an ancestor element, it's not
first: prepend it with some formatting -->
<xsl:text> -> </xsl:text>
</xsl:if>
<xsl:value-of select="text"/>
<!-- reports the value of the <text> element child, which is our label
-->
</xsl:for-each>
</xsl:template>
By default, a for-each traverses in document order, so this will go
top-down. (There are ways to tweak it if you want something different.)
I hope this helps,
Wendell
At 01:19 PM 11/26/2002, you wrote:
I have been trying to figure out a way of iterating over the parent
nodes of a particular child all the way to the root of the tree.
Essentially, I'd like to display the path which I have taken to get to the
current child, but I would like to do it in such a way that at a future
point in time, I can modify my style sheet to include hyperlinks at each
parent node. An example xml file would be:
<data><text>Title for web page</text>
<data><text>Motivation</text>
<data><text>White Pages</text></data>
<data><text>References</text></data>
</data>
<data><text>Requirements</text>
<data><text>Software</text></data>
<data><text>Hardware</text></data>
</data>
<data><text>Design</text>
<data><text>Interfaces</text>
<data><text>Hardware-Software</text></data>
<data><text>Legacy Software</text></data>
</data>
<data><text>Functions</text></data>
</data>
<data><text>Implementation</text></data>
<data><text>Verification</text></data>
<data><text>Documentation</text></data>
<data><text>Archive</text></data>
</data>
Suppose that we are at the following X-Path:
/<root data>/<Design data>/<Interfaces data>/<Hardware-Software data>
I would like to develop a template that essentially displays the path
above in the following way:
Title for web page -> Design -> Interfaces -> Hardware-Software
At each point, if I added a <href> node within the xml tree as a child of
the <data> element, then I would like to be able to hyperlink each
individual node...
Thanks!
Bix
======================================================================
Wendell Piez
mailto:wapiez(_at_)mulberrytech(_dot_)com
Mulberry Technologies, Inc. http://www.mulberrytech.com
17 West Jefferson Street Direct Phone: 301/315-9635
Suite 207 Phone: 301/315-9631
Rockville, MD 20850 Fax: 301/315-8285
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