Hintz, David wrote:
I'm still a novice at XSLT and am having a problem coming up with a test for
elements preceding a particular element, but only up to the first occurrence of
the same (or parent) element. For example, in this XML:
<list>
<a/>
<item>...</item>
<b/><b/><a/>
<item>...</item>
<item>...</item>
<a/><a/>
<item>...</item>
</list>
Assume in this example, <a> and <b> elements can occur before each item (any number of each).
When I start processing an <item>, how do I get a list of just those nodes before the first preceding
<item> or parent <list> element?
With XSLT 2.0 you can use the XPath 2.0 '>>' operator
<xsl:template match="item">
<xsl:variable name="preceding-item"
select="preceding-sibling::item[1]"/>
<xsl:variable name="preceding-abs" select="preceding-sibling:a[.
>> $preceding-item] | preceding-sibling:b[. >>
$preceding-item]"/>
</xsl:template>
It sounds however as if you might want to consider
<xsl:for-each-group select="*" group-ending-with="item">
in a template matching the "list" element. That's also XSLT 2.0 however.
--
Martin Honnen
http://msmvps.com/blogs/martin_honnen/
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