Looks to me something like this:
<xsl:variable name="pop" select="collection('...')//*[(_at_)type]"/>
<xsl:for-each-group select="$pop" group-by="node-name(.)">
<h1><xsl:value-of select="current-grouping-key()"/></h1>
<table>
<tr>
<td>document</td>
<xsl:variable name="types"
select="distinct-values(current-group()/@type)"/>
<xsl:for-each select="$types">
<td><xsl:value-of select="."/></td>
</xsl:for-each>
</tr>
<xsl:for-each-group select="current-group()"
group-by="ancestor::p/@xml:id">
<tr>
<td><xsl:value-of select="current-grouping-key()"/></td>
<xsl:for-each select="$types">
<td><xsl:value-of
select="count(current-group()[(_at_)type=current()])"/></td>
</xsl:for-each>
</tr>
</table>
</xsl:for-each-group>
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: James Cummings [mailto:cummings(_dot_)james(_at_)gmail(_dot_)com]
Sent: 01 February 2008 17:23
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] XSLT2, collection(), and xsl:key
Hiya,
I'm using the collection() function and Saxon to produce some
statistics about how many of which elements of which type in
a particular set of documents.
Let's say that document one has something like:
<p xml:id="doc1" type="hypothetical">
There is some text with <seg type="foo">some foo</seg> and
occasionally <seg type="blort">blort</seg> and <other
type="wibble">wibble</other></p>
and document two (and up to some really large number) is like:
<p xml:id="doc2">
There is another doc with <seg type="foo">some foo</seg> and
occasionally <seg type="notBlort">notBlort</seg> and <other
type="fluffy">fluffy other</other> and <some
name="thing">someThing</some></p>
What I want to produce are tables of counts of specific
elements, by document and type. So something like the
following (though using table/row/cell xml markup):
table: other
document | fluffy | wibble | stuff
doc1 | 0 | 1 | 0
doc2 | 1 | 0 | 0
doc3 | 20 | 12 | 54
table: seg
document | blort | foo | notBlort
doc1 | 1 | 1 | 0
doc2 | 0 | 1| 1
doc3 | 23 | 44 | 58
table: some
document | thing | else | now
doc1 | 0 | 0 | 0
doc2 | 1 | 0 | 0
doc3 | 12 | 5 | 24
I can build this manually (and for one element I have done
so) by doing:
<xsl:variable name="docs"
select="collection('../../working/xml/docs.xml')"/>
<xsl:template name="main">
<table><head>seg by type</head>
<row rend="label">
<cell>document</cell>
<cell>blort</cell>
<cell>foo</cell>
<cell>notBlort</cell>
</row>
<xsl:for-each select="$docs//p"> <!-- let's pretend p is the
root element --> <row> <xsl:variable name="doc"
select="@xml:id"/> <cell><xsl:value-of select="$doc"/></cell>
<cell><xsl:value-of select="count(.//seg[(_at_)type='blort'])</cell>
<cell><xsl:value-of select="count(.//seg[(_at_)type='foo'])</cell>
<cell><xsl:value-of select="count(.//seg[(_at_)type='notBlort'])</cell>
</row>
</xsl:for-each>
</table>
</xsl:template>
But that isn't really the point now is it? I tried to use
<xsl:key> but I ran into the problem of it not liking the
collection() function as part of the match.
What I want to do is be able to say for-each doc, build me a
table of all the (let's pretend unknown) values of this
attribute on this element. So something like:
<xsl:for-each select="$docs//p">
<xsl:value-of select="my:function(other/@type, seg/@type,
thing/@name, new/@type)"/> </xsl:for-each>
and without knowing the values of @type in advance it makes a
table like above of them (using distinct-values()?) and
counting their occurrences.
This is a case where I know it must be possible, and I could
just go and do it manually, (in reality there are about 10
elements with a number of attributes, with around 20 values
each), but it just seems
*wrong* to do it that way. ;-)
Suggestions?
Thanks,
-James
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