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RE: [xsl] strange issue with execution order of range expression (for $x in 1 to $y)

2009-12-17 08:18:23
Hi Andrew,

I'm using Saxon8.7 for my projects.  It's also the default version of Saxon 
used with Apache Cocoon2.2 and I've been using it for the last 2 years.

I wrote a little simplified version 

<xsl:copy-of select="for $i in (1 to $rowSize) return nxp:getRow($i)"/>

  <xsl:function name="nxp:getRow">
    <xsl:param name="rowIndex"/>
    <row rowIndex="{$rowIndex}"/>
  </xsl:function>

Which produces  correctly
<tbody>
   <row rowIndex="1"/>
   <row rowIndex="2"/>
   <row rowIndex="3"/>
   <row rowIndex="4"/>
   <row rowIndex="5"/>
</tbody>

The only difference I see is that I pass on multiple function arguments AND I 
reference globally declared variables in this function (closure).  Could the 
last be messing up execution order somehow?

I'm willing to create a similar simplified setup and try if I can reproduce a 
similar issue.

Robby Pelssers


-----Original Message-----
From: Andrew Welch [mailto:andrew(_dot_)j(_dot_)welch(_at_)gmail(_dot_)com] 
Sent: Thursday, December 17, 2009 2:03 PM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] strange issue with execution order of range expression (for 
$x in 1 to $y)

removing all of the irrelevant code, that simplifies down to:

<xsl:function name="nxp:getPinningTableRow">
  <xsl:param name="rowIndex"/>
  <row rowIndex="{$rowIndex}"/>
</xsl:function>

<xsl:template match="/">
  <tbody>
    <xsl:copy-of select="for $i in (1 to 5) return nxp:getPinningTableRow($i)"/>
  </tbody>
</xsl:template>

which outputs:

<tbody>
   <row rowIndex="1"/>
   <row rowIndex="2"/>
   <row rowIndex="3"/>
   <row rowIndex="4"/>
   <row rowIndex="5"/>
</tbody>

using Saxon 9.1.0.3

If you get something different with the above, post back with your set up.

cheers
andrew


2009/12/17 Robby Pelssers <robby(_dot_)pelssers(_at_)ciber(_dot_)com>:
Hi all,

I have following template which calls a custom function I wrote for a certain 
range:

  <!--
   | This template handles the Topic 'Pinning information'  (-> 
CharacteristicSet 'Pinning information')
   | Note: We need to take the simplified outline graphic from the package 
instead of the product
   -->
  <xsl:template match="Topic[(_at_)id='pinning_information']" mode="topic">
    <xsl:variable name="pinChar" 
select="$pr_cs_pinninginformation/Characteristics/Characteristic[not(MinorTerm)
 and Parameter/@DETIdentifier='PAE050']"/>
    <xsl:variable name="symbolChar" 
select="$pr_cs_pinninginformation/Characteristics/Characteristic[not(MinorTerm)
 and Parameter/@DETIdentifier='PAE051']"/>
    <xsl:variable name="descriptionChar" 
select="$pr_cs_pinninginformation/Characteristics/Characteristic[not(MinorTerm)
 and Parameter/@DETIdentifier='PAE061']"/>
    <xsl:variable name="simplifiedOutline_FigureCode" 
select="$pa_cs_graphicreferences/Characteristics/Characteristic[not(MinorTerm)
 and Parameter/@DETIdentifier='PAF008']/Values/Value"/>
    <xsl:variable name="graphicSymbol_FigureCode" 
select="$pr_cs_pinninginformation/Characteristics/Characteristic[not(MinorTerm)
 and Parameter/@DETIdentifier='PAF002']/Values/Value"/>
    <!-- we can count the rowSize based on pin, symbol or description rows, 
here we count the number of pin rows-->
    <xsl:variable name="rowSize" select="count($pinChar/Values/Value)"/>

    <p-topic id="{(_at_)id}">
      <title><xsl:value-of select="@title"/></title>
      <xsl:call-template name="prolog"/>
      <body>
        <table tabletype="nonQuantitative">
          <title><xsl:value-of select="if (@tabletitle) then @tabletitle else 
@title"/></title>
          <tgroup cols="5">
            <colspec colnum="1" colname="col1" colwidth="*"/>
            <colspec colnum="2" colname="col2" colwidth="*"/>
            <colspec colnum="3" colname="col3" colwidth="*"/>
            <colspec colnum="4" colname="col4" colwidth="*"/>
            <colspec colnum="5" colname="col5" colwidth="*"/>
            <thead>
              <row>
                <entry colname="col1">
                  <p>Pin</p>
                </entry>
                <entry colname="col2">
                  <p>Symbol</p>
                </entry>
                <entry colname="col3">
                  <p>Description</p>
                </entry>
                <entry colname="col4">
                  <p>Simplified outline</p>
                </entry>
                <entry colname="col5">
                  <p>Graphic symbol</p>
                </entry>
              </row>
            </thead>
            <tbody>
              <xsl:copy-of select="for $i in (1 to $rowSize) return 
(nxp:getPinningTableRow($rowSize, $i, $pinChar, $symbolChar, 
$descriptionChar, $simplifiedOutline_FigureCode, $graphicSymbol_FigureCode))" 
copy-namespaces="no"/>
            </tbody>
          </tgroup>
        </table>
      </body>
    </p-topic>
  </xsl:template>

  <xsl:function name="nxp:getPinningTableRow">
    <xsl:param name="rowSize"/>
    <xsl:param name="rowIndex"/>
    <xsl:param name="pinChar"/>
    <xsl:param name="symbolChar"/>
    <xsl:param name="descriptionChar"/>
    <xsl:param name="simplifiedOutline_FigureCode"/>
    <xsl:param name="graphicSymbol_FigureCode"/>
    <row rowIndex="{$rowIndex}"/>
  </xsl:function>

The weird thing is that the generated <tbody> looks like

<tbody>
  <row rowIndex="5"/>
  <row rowIndex="1"/>
  <row rowIndex="2"/>
  <row rowIndex="3"/>
  <row rowIndex="4"/>
</tbody>

Is a range not supposed to be executed in order 1 -> 2 -> 3-> 4-> 5 ??  Or 
what could potentially mess-up the execution order of calling this function?

Robby Pelssers
http://robbypelssers.blogspot.com/


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-- 
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/

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