RE: [xsl] Integrated sort using different elements

> From: Michael Kay [mailto:mike(_at_)saxonica(_dot_)com]
> Sent: Thursday, February 19, 2009 10:49 AM
> To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
> Subject: RE: [xsl] Integrated sort using different elements
>
> > > <xsl:sort select="
> > >    monogr/author |
> > >    self::*[not(monogr/author)]/analytic/author |
> > >    self::*[not(monogr/author | analytic/author)]/monogr/editor |
> > >    self::*[not(monogr/author | analytic/author |
> > > monogr/editor)]/monogr/title"/>
> > I think for XSLT 1.0 you can simplify that select to:
> >
> > <xsl:sort select="(monogr/author|analytic/author)[1]"/>
> I don't think so. That will select the first in document order, not the
> first in the order of precedence defined in the requirement statement.
Maybe I misunderstood the requirements, but I thought it said that under
the biblStruct element you wanted the first one that occurred to be sorted.
So given:

<?xml version="1.0" ?>
<document>
  <biblStruct>
    <analytic>
      <author>Author Name 2</author>
      <title>Article Name 2</title>
    </analytic>
    <monogr>
      <author>Author Name 0</author>
      <title>Journal Title 0</title>
      <editor>Editor Name 0</editor>
    </monogr>
  </biblStruct>
  <biblStruct>
    <monogr>
      <author>Author Name 1</author>
      <title>Journal Title 1</title>
      <editor>Editor Name 1</editor>
    </monogr>
  </biblStruct>
</document>

and:

<xsl:transform version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
  <xsl:output method="xml" encoding="UTF-8" indent="yes"/>
  <xsl:template match="biblStruct">
    <xsl:copy-of select="."/>
  </xsl:template>
  <xsl:template match="document">
    <xsl:copy>
      <xsl:apply-templates select="biblStruct">
        <xsl:sort order="ascending" data-type="text" 
select="(monogr/author|analytic/author)[1]"/>
      </xsl:apply-templates>
    </xsl:copy>
  </xsl:template>
  <xsl:template match="/">
    <xsl:apply-templates select="*[1]/self::document"/>
  </xsl:template>
</xsl:transform>

it should result in:

<?xml version="1.0" encoding="UTF-8"?>
<document>
   <biblStruct>
      <monogr>
         <author>Author Name 1</author>
         <title>Journal Title 1</title>
         <editor>Editor Name 1</editor>
      </monogr>
  </biblStruct>
   <biblStruct>
      <analytic>
         <author>Author Name 2</author>
         <title>Article Name 2</title>
      </analytic>
      <monogr>
         <author>Author Name 0</author>
         <title>Journal Title 0</title>
         <editor>Editor Name 0</editor>
      </monogr>
  </biblStruct>
</document>

So what did I misunderstand about the problem?


Andy.


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