RE: [xsl] xslt 2. index-of, nodes

["Michael Kay" <mhk@xxxxxxxxx>]

You do indeed seem to have stumbled on a Saxon bug here. I can't at
present see what's special to be triggering it, but the grouping key is
being calculated incorrectly (and is the same for every node in the
population). It fails in the same way on earlier Saxon releases, it's
not something newly introduced. 

(To see what's going on in this kind of case, I find it much easier to
add information to the result tree than using xsl:message. Stick a
<group> element immediately inside the <for-each-group, and output the
value of the grouping key, then put an <item> element inside the inner
<for-each>. It then becomes much clearer what's going on).

Michael Kay

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of 
> David.Pawson@xxxxxxxxxxx
> Sent: 04 July 2003 09:25
> To: jeni@xxxxxxxxxxxxxxxx
> Cc: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE: [xsl] xslt 2. index-of, nodes
> 
> 
> > I don't think it should in your example, assuming that side 
> is always 
> > 'left' or 'right'. Can you put together a small example 
> showing it not 
> > working? (Of course it might be a Saxon bug.)
> 
> Below. small enough xml, full stylesheet.
> I couldn't shrink the stylesheet.
> Worked round the concat problem using string-join
> (what funny syntax!)
> 
> I expect this to produce 9 <circle> since each loc entry is 
> unique. It produces one, the first one in the file.
> 
> Is string join doing a 1.0 and only pulling the first node?
> 
> regards DaveP
> 
> xml.
> 
> <recs>
>  <intro>
>   <para>Position: wrt  enumeration; Suffixed with i= inner, 
> o=outer, t=t</para>
>   <para>intns: on scale low 0, high 0</para>
>  </intro>
> 
>  <!-- test -->
> 
> <rec>
>   <date>2003-06-23</date>
>   <mu>
>    <loc hl="upper" side="right" loc="3" />
>    <intns>1</intns>
>   </mu>
>   <mu>
>    <loc hl="upper" side="right" loc="4" />
>    <intns>1</intns>
>   </mu>
>   <mu>
>    <loc hl="upper" side="right" loc="5" />
>    <intns>1</intns>
>   </mu>
>  <mu>
>    <loc hl="upper" side="right" loc="6" />
>    <intns>1</intns>
>   </mu>
>  <mu>
>    <loc hl="upper" side="right" loc="7" />
>    <intns>1</intns>
>   </mu>
>  <mu>
>    <loc hl="upper" side="right" loc="8" />
>    <intns>1</intns>
>   </mu>
>  <mu>
>    <loc hl="lower" side="right" loc="8" />
>    <intns>1</intns>
>   </mu>
>  <mu>
>    <loc hl="lower" side="right" loc="7" />
>    <intns>1</intns>
>   </mu>
>  <mu>
>    <loc hl="lower" side="right" loc="6" />
>    <intns>1</intns>
>   </mu>
> 
> 
>  <!-- end test -->
> 
>  </rec>
> 
> </recs>
> 
> 
> 
> stylesheet:
> 
> <?xml version="1.0" encoding="utf-8"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> xmlns:t="www.dpawson.co.uk#ns" xmlns:svg='http://www.w3.org/2000/svg' 
>   xmlns:fn="http://www.w3.org/2002/11/xquery-functions";
>   xmlns:xs="http://www.w3.org/2001/XMLSchema-datatypes";
>   xmlns:op="http://www.w3.org/2002/11/xquery-operators";
>                 version="2.0">
> 
>   <xsl:variable name="xExtent" select="1000"/>
> <xsl:variable name="yExtent" select="600"/>
>   <xsl:output method="xml"
> indent="yes"
> doctype-public="-//W3C//DTD SVG 1.0//EN" 
> doctype-system="http://www.w3.org/TR/2001/REC-SVG-20010904/DTD
> /svg10.dtd"
> />
> 
>   <xsl:template match="/">
>     <xsl:processing-instruction
> name="xml-stylesheet">
>  type='text/css' href='mu.css' 
>     </xsl:processing-instruction>
> <svg xmlns='http://www.w3.org/2000/svg' 
> xmlns:xlink='http://www.w3.org/1999/xlink'  
> width ='1000'
>  height='600'
> viewBox='0 0 1000 600 '  >
>         <xsl:apply-templates/>
>       </svg>
>   </xsl:template>
> 
>   <xsl:template match="recs">
>     <xsl:message>
>       <xsl:value-of select="count(rec/mu[loc])"/> records
>     </xsl:message>
>      <svg:rect x="1" y="1" width="{$xExtent -20}" 
> height="{$yExtent - 10}"
>         fill="none" stroke="blue" />
> 
>        <xsl:for-each-group select="rec[mu/loc]"         
>          
> group-by="string-join((mu/loc/@hl,mu/loc/@side,mu/loc/@loc), '+') ">
>              <xsl:for-each select="current-group()">
>                <xsl:variable name="context" select="mu[loc][1]/loc"/>
>                <xsl:variable name="loc" 
> select="number(mu[1]/loc/@loc)" />
>                <xsl:variable name="yoffs" 
> select="document('')//t:arc/y[$loc]"/>
>                <xsl:variable name="xpos">
>                  <xsl:if test="$context/@side='left'">
>                    <xsl:value-of select="(9 - $loc) * 
> ($xExtent div 16)"/>
>                  </xsl:if>
>                  <xsl:if test="$context/@side='right'">
>                    <xsl:value-of select="($loc * $xExtent div 
> 16) + 500"/>
>                  </xsl:if>
>                </xsl:variable>
>                
>                <xsl:variable name="ypos" >
>                  <xsl:if test="$context/@hl='upper'">
>                    <xsl:value-of select="xs:integer($yoffs)"/>
>                  </xsl:if>
>                  <xsl:if test="$context/@hl='lower'">
>                    <xsl:value-of select="xs:integer(600 - $yoffs)" />
>                  </xsl:if>
>                </xsl:variable>
>              
>                <xsl:variable name="order" select="position()"/>
> 
>                <xsl:message>
>              [<xsl:value-of select="$context/@hl"/> 
> <xsl:value-of select="$context/@side"/> <xsl:value-of 
> select="$context/@loc"/>]
>              </xsl:message>
>                  <xsl:if test="position()= last()">
>                    <svg:g>
>                    <svg:text x="{$xpos+10}" y="{$ypos + 
> ($order * 10) - 20}" class="fil3 fnt0 str0">
>                      <xsl:value-of select="date"/> -
>                      <xsl:value-of 
> select="count(current-group())"/> [<xsl:value-of 
> select="$context/@hl"/>&#xa0; <xsl:value-of 
> select="$context/@side"/>&#xa0; <xsl:value-of 
> select="$context/@loc"/>]
>                    </svg:text>
>                  
>                    <xsl:call-template name="loc">
>                    <xsl:with-param name="context" select="$context"/>
>                  </xsl:call-template>
>                </svg:g>
>                </xsl:if>
>             
>              </xsl:for-each>
>          
>      </xsl:for-each-group>
>   </xsl:template>
> 
> 
> 
> 
>   <xsl:template match="intro"/>
> 
>  
> 
> 
>   <xsl:template match="rec">
>     <xsl:if test="mu/loc">
>       <xsl:apply-templates select="mu" mode="draw"/>
>     </xsl:if>
>   </xsl:template>
> 
>  
> 
> 
> 
> 
> 
>   <xsl:template match="mu" mode="draw">
>     <xsl:apply-templates select="loc"/>
>   </xsl:template>
> 
> 
> 
>   <xsl:template name="loc">
>     <xsl:param name="context" />
>       <xsl:variable name="loc" select="number($context[1]/@loc)"/>
>     <xsl:variable name="yoffs" select="document('')//t:arc/y[$loc]"/>
>   
>       <xsl:variable name="xpos">
>         <xsl:if test="$context/@side='left'">
>           <xsl:value-of select="(9 - $loc) * ($xExtent div 16)"/>
>         </xsl:if>
>         <xsl:if test="$context/@side='right'">
>           <xsl:value-of select="($loc * $xExtent div 16) + 500"/>
>         </xsl:if>
>       </xsl:variable>
> 
>       <xsl:variable name="ypos">
>           <xsl:if test="$context/@hl='upper'">
>           <xsl:value-of select="$yoffs"/>
>         </xsl:if>
>         <xsl:if test="$context/@hl='lower'">
>           <xsl:value-of select="600 - $yoffs"/>
>         </xsl:if>
>       </xsl:variable>
>   <xsl:message>
>                  x  <xsl:value-of select="$xpos"/> 
>                  y  <xsl:value-of select="$ypos" separator=" ,"/> 
>                  loc <xsl:value-of select="$loc"/> 
>                  yoffset   <xsl:value-of select="$yoffs" 
> separator=" ,"/> 
>                </xsl:message>
>     
>         <svg:circle fill="red" r="10" stroke="blue" 
> stroke-width="1" cx="{$xpos}" cy="{$ypos}" /> 
>   </xsl:template>
> 
> 
> 
>   <xsl:template match="*">
>     <svg:g>
>       <svg:text x="100" y="100" class="fil3 fnt0 str0">
>         *****<xsl:value-of select="name(..)"/>/<xsl:value-of
> select="name()"/>******
>     </svg:text>
>   </svg:g>
>   <xsl:message terminate="yes">
>     Oops <xsl:value-of select="name(..)"/>/<xsl:value-of 
> select="name()"/> not styled
>   </xsl:message>
> </xsl:template>
> 
> 
> <t:arc>
>   <y>0</y>
>   <y>30</y>
>   <y>64</y>
>   <y>90</y>
>   <y>125</y>
>   <y>160</y>
>   <y>200</y>
>   <y>240</y>
> </t:arc>
> 
>  
> </xsl:stylesheet>
> 
> - 
> 
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