Subject: RE: grouping (was: if or template?) From: Kevin Williams <Kevin.Williams@xxxxxxxxxxxxxx> Date: Mon, 8 May 2000 12:01:27 -0400 |
I posted something very similar about a month ago to XML-L - it was my last-ditch attempt to get around the (disturbing) lack of the preceding:: axis in MSXML3: <xsl:for-each select="//favouritebook"> <xsl:variable name="thisTitle" select="@title"/> <xsl:if test="generate-id(@title)=generate-id(//@title[.=$thisTitle])"> ... </xsl:if> </xsl:for-each> Using xsl:key is more elegant (and almost certainly faster) than using a variable and xsl:if, as I did; however, since generate-id returns the generated identifier for the first node in a node-set passed to it, the call can be simplified somewhat: <xsl:for-each select="//tracker-id[generate-id(.)=generate-id(key('tid',.))]"> - Kevin Kevin Williams XML Architect Ultraprise Corporation > -----Original Message----- > From: Kay Michael [mailto:Michael.Kay@xxxxxxx] > This is the traditional solution; Steve Muench has just told > me about a > brilliant alternative using keys: > > <xsl:key name="tid" use="tracker-id" select="."/> > > <xsl:for-each > select="//tracker-id[generate-id(.)=generate-id(key('tid',.)[1])]"> > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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