It seems that for each section the recursion groups them
nicely but then when
it exist the recursion it applies the same again to <sec>
tags that have
already been grouped therefore sec's are getting output twice, e.g.
Then your template rule for the "ch" element (which you haven't shown us,
and which I didn't actually write for you) appears not to be selecting the
"top-level" sections, but is actually processing all of the sections.
I didn't supply this code because I don't know your data well enough. It
might be that all sec elements with an 8-character id value are top-level,
or the rule might be more complicated.
Michael Kay
http://www.saxonica.com/
<?xml version="1.0" encoding="iso-8859-1"?>
<doc>
<ch id="1o1">
<sec id="sec1o1o1" fpage="3" lpage="5"/>
<sec id="sec1o1o1o1" fpage="3" lpage="3"/>
<sec id="sec1o1o1o2" fpage="3" lpage="4"/>
<sec id="sec1o1o1o3" fpage="4" lpage="4"/>
<sec id="sec1o1o1o4" fpage="4" lpage="5"/>
<sec id="sec1o1o1o5" fpage="5" lpage="5"/>
...
goes to
<?xml version="1.0"?>
<doc>
<ch id="1o1">
<sec id="sec1o1o1" fpage="3" lpage="5">
<sec id="sec1o1o1o1" fpage="3" lpage="3"/>
<sec id="sec1o1o1o2" fpage="3" lpage="4"/>
<sec id="sec1o1o1o3" fpage="4" lpage="4"/>
<sec id="sec1o1o1o4" fpage="4" lpage="5"/>
<sec id="sec1o1o1o5" fpage="5" lpage="5"/>
</sec>
<!-- these have already been output -->
<sec id="sec1o1o1o1" fpage="3" lpage="3"/>
<sec id="sec1o1o1o2" fpage="3" lpage="4"/>
<sec id="sec1o1o1o3" fpage="4" lpage="4"/>
<sec id="sec1o1o1o4" fpage="4" lpage="5"/>
<sec id="sec1o1o1o5" fpage="5" lpage="5"/>
it needs to some how remember what it has already grouped
(sorry for the
procedural thinking here.)
This isn't too much of a problem in this case because I can
remove those extra
sec tags with a second script based on depth.
Dave.
The key to this is to do a recursive descent using
xsl:apply-templates, but
instead of selecting the physical children of the current
node in the XML
tree as you normally would, you select the *logical*
children, for example
<xsl:template match="sec">
<xsl:copy>
<xsl:apply-templates select=
"//sec[string-length(@id)=string-length(current()/@id)+2 and
starts-with(@id, current()/@id)]"/>
</xsl:copy>
</xsl:template>
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: David Holden [mailto:dh(_at_)iucr(_dot_)org]
Sent: 13 December 2005 17:39
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] nesting flat XML based on attribute value.
Hello,
I'm not sure whether I'm being dumb or not here but I'm
stuck on converting a
flat structure to a nested structure.
the flat structure is like this:-
<?xml version="1.0 " encoding="US-ASCII"?>
<doc>
<ch id="1o1">
<sec id="sec1o1o1" fpage="3" lpage="5" />
<sec id="sec1o1o1o1" fpage="3" lpage="3"/>
<sec id="sec1o1o1o2" fpage="3" lpage="4"/>
<sec id="sec1o1o1o3" fpage="4" lpage="4"/>
<sec id="sec1o1o1o4" fpage="4" lpage="5"/>
<sec id="sec1o1o1o5" fpage="5" lpage="5"/>
<sec id="sec1o1o2" fpage="5" lpage="7"/>
<sec id="sec1o1o2o1" fpage="5" lpage="5"/>
<sec id="sec1o1o2o2" fpage="5" lpage="5"/>
<sec id="sec1o1o2o3" fpage="5" lpage="6"/>
<sec id="sec1o1o2o4" fpage="6" lpage="7"/>
<sec id="sec1o1o2o4o1" fpage="6" lpage="6"/>
<sec id="sec1o1o2o4o2" fpage="6" lpage="6"/>
<sec id="sec1o1o2o4o3" fpage="6" lpage="7"/>
<sec id="sec1o1o3" fpage="7" lpage="10"/>
<sec id="sec1o1o3o1" fpage="7" lpage="7"/>
<sec id="sec1o1o3o1o1" fpage="7" lpage="7"/>
</ch>
</doc>
I would like to get to
<?xml version="1.0" encoding="US-ASCII"?>
<doc>
<ch id="1o1">
<sec id="sec1o1o1" fpage="3" lpage="5">
<sec id="sec1o1o1o1" fpage="3" lpage="3"/>
<sec id="sec1o1o1o2" fpage="3" lpage="4"/>
<sec id="sec1o1o1o3" fpage="4" lpage="4"/>
<sec id="sec1o1o1o4" fpage="4" lpage="5"/>
<sec id="sec1o1o1o5" fpage="5" lpage="5"/>
</sec>
<sec id="sec1o1o2" fpage="5" lpage="7">
<sec id="sec1o1o2o1" fpage="5" lpage="5"/>
<sec id="sec1o1o2o2" fpage="5" lpage="5"/>
<sec id="sec1o1o2o3" fpage="5" lpage="6"/>
<sec id="sec1o1o2o4" fpage="6" lpage="7">
<sec id="sec1o1o2o4o1" fpage="6" lpage="6"/>
<sec id="sec1o1o2o4o2" fpage="6" lpage="6"/>
<sec id="sec1o1o2o4o3" fpage="6" lpage="7"/>
</sec>
</sec>
<sec id="sec1o1o3" fpage="7" lpage="10">
<sec id="sec1o1o3o1" fpage="7" lpage="7">
<sec id="sec1o1o3o1o1" fpage="7" lpage="7"/>
</sec>
</sec>
</ch>
</doc>
i.e. both the nesting "level" and "order" are in the id
attribute.
any tips appreciated.
Dave.
--
Dr. David Holden.
Please avoid sending me Word or PowerPoint attachments, thanks.
See: <http://www.gnu.org/philosophy/no-word-attachments.html>
Public GPG key available on request.
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