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RE: [xsl] Re: Adjusting sorted list
Subject: RE: [xsl] Re: Adjusting sorted list From: TSchutzerWeissmann@xxxxxxxxxxxxxxxx Date: Fri, 17 May 2002 09:52:22 +0100 |
Andrew, Dimitre's method is a grouping method: you group the b elements and then run through the group using position() to get the ranking. It's also possible to maintain a variable containing one b per value of b and use that as the means of knowing the rank of a b. The only advantage of doing it this way is that you can group your b's any which way and still know their rank. Let's say you wanted to do this globally, ie, have only one ranking for b elements applying to all of them. The variable can be global: <xsl:stylesheet version='1.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'> <xsl:key name='bs' match ='b' use='@val'/> <xsl:variable name="uniqueBs" select='//b[count(. | key("bs", @val)[1]) = 1]'/> In your case you can be a bit more specific than "//b" - you could use "/root/a/b" and that will get all b elements. Now whenever you want to know the rank of a current b element you just do this: <xsl:value-of select='count($uniqueBs[@val < current()/@val]) + 1'/> This could be within another grouping, for example one that created a table with three columns. HTH Tom Weissmann -----Original Message----- From: Andrew Timberlake [mailto:andrew.lists@xxxxxxxxx] Sent: 16 May 2002 17:43 To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx Subject: Re: [xsl] Re: Adjusting sorted list I've been playing with this idea and have created an interesting side effect. Using source: <root> <a> <b val="4">four</b> <b val="9">nine</b> <b val="6">six</b> <b val="1">one</b> <b val="8">eight</b> <b val="6">six</b> <b val="4">four</b> <b val="7">seven</b> </a> <a> <b val="9">nine</b> <b val="5">five</b> <b val="5">five</b> </a> </root> And style sheet: <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output omit-xml-declaration="yes" indent="yes"/> <xsl:key name="kRanking" match="b" use="@val"/> <xsl:template match="/root/a"> <a> <xsl:for-each select="b[generate-id() = generate-id(key('kRanking',@val)[1]) ]"> <xsl:sort select="@val" data-type="number"/> <xsl:variable name="vPos" select="position()"/> <xsl:for-each select="key('kRanking',@val)"> <b rank="{$vPos}"> <xsl:value-of select="."/> </b> </xsl:for-each> </xsl:for-each> </a> </xsl:template> </xsl:stylesheet> I now get: <a> <b rank="1">one</b> <b rank="2">four</b> <b rank="2">four</b> <b rank="3">six</b> <b rank="3">six</b> <b rank="4">seven</b> <b rank="5">eight</b> <b rank="6">nine</b> <b rank="6">nine</b> </a> <a> <b rank="1">five</b> <b rank="1">five</b> </a> What have I done??? Andrew On Thu, 2002-05-16 at 16:58, Dimitre Novatchev wrote: > Bellow is the stylesheet that does this: > > <xsl:stylesheet version="1.0" > xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> > > <xsl:output omit-xml-declaration="yes" indent="yes"/> > > <xsl:key name="kRanking" match="b" use="."/> > > <xsl:template match="/"> > <a> > <xsl:for-each select="/a/b[generate-id() > = > generate-id(key('kRanking',.)[1]) > ]"> > <xsl:sort select="." data-type="number"/> > > <xsl:variable name="vPos" select="position()"/> > > <xsl:for-each select="key('kRanking',.)"> > <b rank="{$vPos}"> > <xsl:value-of select="."/> > </b> > > </xsl:for-each> > </xsl:for-each> > </a> > </xsl:template> > </xsl:stylesheet> > > With your source xml it produces exactly the desires result: > > <a> > <b rank="1">1</b> > <b rank="2">4</b> > <b rank="2">4</b> > <b rank="3">6</b> > <b rank="3">6</b> > <b rank="4">7</b> > <b rank="5">8</b> > <b rank="6">9</b> > </a> > > Hope this helped. > > Cheers, > Dimitre Novatchev. > > > > > __________________________________________________ > Do You Yahoo!? > LAUNCH - Your Yahoo! Music Experience > http://launch.yahoo.com > > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list > -- Andrew Timberlake Digital Design Development http://www.ddd.co.za mailto:andrew@xxxxxxxxx 011 705 1737 082 415 8283 "If debugging is the process of removing bugs, then programming must be the process of putting them in." XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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