I think it's:
match="foreign[(_at_)lang = (ancestor::*/@lang)[last()]]"
which is valid in both 1.0 and 2.0.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: Syd Bauman [mailto:Syd_Bauman(_at_)Brown(_dot_)edu]
Sent: 14 July 2008 01:47
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] XPath to select based on attr = same attr of
an ancestor
The idea here is that I want a template that will match any
<foreign> element that has a lang= attribute with a value
that matches the lang= attribute value of said <foreign>
element's nearest ancestor that has a lang= attribute
specified. (So that I can delete said
<foreign>.) I.e. in
<div lang="en">
<p>Only <foreign lang="en">one</foreign> more!</p>
<p>Only <foreign lang="es">uno</foreign> more!</p>
</div>
the first <foreign> should be matched, and the second should not.
Thus the above should become
<div lang="en">
<p>Only one more!</p>
<p>Only <foreign lang="es">uno</foreign> more!</p>
</div>
I used the following XPath on the match= of an <xsl:template>:
foreign[(_at_)lang][ancestor::*[(_at_)lang]][1][ ./@lang =
./ancestor::*[(_at_)lang][1]/@lang ] While my stylesheet seems to
work for simple cases, it fails for many cases, too. (Like
missing all but the 1st <foreign> in a <p>.)
In case it helps, I have made the requisite files available
via the web (see below), but it may be the case that sharp
eyes here can pick up on some detail I've messed up just by
looking at the XPath itself.
And while I'd prefer to stick with XSLT 1 and thus XPath 1,
XSLT 2 and thus XPath 2 is an option.
1) the story:
http://bauman.zapto.org/~syd/temp/rrfq/story.txt
2) the XSLT 1.0 stylesheet itself
http://bauman.zapto.org/~syd/temp/rrfq/remove_redundant_foreig
n_elements.xslt
3) a test input XML file
http://bauman.zapto.org/~syd/temp/rrfq/test_remove_redundant_f
oreign_input.xml
4) the desired output
http://bauman.zapto.org/~syd/temp/rrfq/test_remove_redundant_f
oreign_desired.xml
5) the actual output
http://bauman.zapto.org/~syd/temp/rrfq/test_remove_redundant_f
oreign_output.xml
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