Cart
|
[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: max string-length for context grandchildren
 <xsl:variable name="maxlen" select=" max(for $str in distinct-values(./*/label) return string-length($str))" /> Gives me the result "14" on your test data. This will work in XSLT 2, not 1. Cheers, E. On 10/4/11 9:08 PM, "Eric Harbeson" <kiteeatingtree@xxxxxxxxxxxxx> wrote: > Dear all, > > I am trying to determine the length of the longest string of a given element, > which is the grand-child of the context node. I've looked all over the > archives and haven't found anything that I can get to work (possibly an > indictment of my searching skills). So I'm hoping a kind soul will take pity > and help me. > > Details first: I'm using XSLT 2.0, though a 1.0 solution would be fine too. > I've tried processing using Saxon [PE | HE | EE] 9.3.0.5, as contained in > oXygen 12.2. > > > I have the following XML: > > <record> > <list type="deflist"> > <head>This is a test list</head> > <defitem> > <label>Processed by</label> > <item>Lynette Stoudt</item></defitem> > <defitem> > <label>Date Completed</label> > <item>February 1999</item></defitem> > <defitem> > <label>Encoded by</label> > <item>William Landis</item> > </defitem> > </list> > </record> > > I'm trying to determine which of the three <label> elements is the longest, so > my desired output is: 14, which is the string length of list/defitem/label[2]. > The calculation needs to be made while <list> is the context node. I've tried > two different approaches: > > 1) It seems to me that it should be possible to do something like this: > > <xsl:template match="list"> > <template match="list"> > <xsl:variable name="longest-label" > select="max(string-length(deflist/label))"/> > <xsl:value-of select="$longest-label"/> > </template> > </xsl:template> > > ...but this returns the number zero. > > 2) The closest thing I've found to an answer is the dual parameter solution > recommended by Michael Kay and as implemented by Phil Lanch on the dpawson FAQ > site (http://www.dpawson.co.uk/xsl/sect2/N8090.html#d10874e649 (#16: How to > find the longest node in a node-set)). > > My implementation of that (which follows) generates the following error, which > I can't explain: "Required item type of first operand of '<' is numeric; > supplied value has item type xs:string." > > <xsl:template match="list"> > <xsl:variable name="longest-label"> > <xsl:call-template name="getlongest"> > <xsl:with-param name="nodeset" select="defitem/label"/> > <xsl:with-param name="longest"/> > </xsl:call-template> > </xsl:variable> > <xsl:text>LongestLabel </xsl:text><xsl:value-of > select="$longest-label"></xsl:value-of> > </xsl:template> > > <xsl:template name="getlongest"> > <xsl:param name="nodeset"/> > <xsl:param name="longest" select="0"/> > <xsl:choose> > <xsl:when test="$nodeset"> > <xsl:choose> > <xsl:when test="string-length($nodeset[1]) > $longest"> > <xsl:call-template name="getlongest"> > <xsl:with-param name="nodeset" > select="$nodeset[position() > 1]"/> > <xsl:with-param name="longest" > select="string-length($nodeset[1])"/> > </xsl:call-template> > </xsl:when> > <xsl:otherwise> > <xsl:call-template name="getlongest"> > <xsl:with-param name="nodeset" > select="$nodeset[position() > 1]"/> > <xsl:with-param name="longest" select="$longest"/> > </xsl:call-template> > </xsl:otherwise> > </xsl:choose> > </xsl:when> > <xsl:otherwise> > <xsl:value-of select="$longest"/> > </xsl:otherwise> > </xsl:choose> > </xsl:template> > > I can't actually find the "<" that is at issue here. When debugging, I noted > that the value of $nodeset is never a number, but some thing like > "<label><label><label>", though I can't see why. > > Any thoughts would be very appreciated. > > With thanks in advance, > Eric Harbeson > -- Eliot Kimber Senior Solutions Architect "Bringing Strategy, Content, and Technology Together" Main: 512.554.9368 www.reallysi.com www.rsuitecms.com 
|
PURCHASE STYLUS STUDIO ONLINE TODAY!Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced! 
Download The World's Best XML IDE!Accelerate XML development with our award-winning XML IDE - Download a free trial today! Subscribe in XML format
|
