RE: [xsl] sequential numbering in xslt

["Michael Kay" <mike@xxxxxxxxxxxx>]

> Can I not use the complete file path in the colleciton()
> function with Saxon?

No, the argument has to be a URI, not a file path.

Try select="collection('file:///C:/input/?select=*.xml')"

Oh, and try reading the documentation: it usually saves time compared with
guessing.

http://www.saxonica.com/documentation/sourcedocs/collections.html

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay
>
>
> On Mon, Jan 4, 2010 at 11:52 AM, James A. Robinson
> <jim.robinson@xxxxxxxxxxxx> wrote:
> >
> >> another XML format using XSLT. The output XML file has a
> schema and
> >> has a required 'seq' attribute in the root element that
> needs to be
> >> incremented for each input XML file.
> >> ...
> >> for every input file, in the transformation, I want to increment
> >> attribute 'seq' in the output file by 1 when I transform the input
> >> files using xslt.
> >> I  have tried <xsl:number> and tried writing a function. But the
> >> problem is that since variables in xslt are constants, there is no
> >> way to increment a number, store it in a temp variable and
> increment
> >> it for the next time in xslt 2.0 unlike procedural
> languages like C
> >> or
> >> C++.
> >>
> >> Is there any other way of achieving this in XSLT 2.0?
> >
> > Using position() is one option, keeping track of the number of
> > documents you are processing yourself, using a recursive
> template, is
> > another:
> >
> > <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet version="2.0"
> >  xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> >
> >  xmlns:xs="http://www.w3.org/2001/XMLSchema";
> >
> >  exclude-result-prefixes="xs">
> >
> >  <!-- URI approporiate for fn:collection, e.g., in
> >       saxon:
> >
> >       <collection stable="true">
> >         <doc href="file1.xml" />
> >         <doc href="file2.xml" />
> >         <doc href="file3.xml" />
> >       </collection>
> >  -->
> >  <xsl:param name="collection-href" required="yes" />
> >
> >  <!-- Previous sequence number, if we need to start at
> >       some point other than 1. -->
> >  <xsl:param name="previous-number" select="0" />
> >
> >
> >  <xsl:template match="/">
> >    <xsl:call-template name="example">
> >      <xsl:with-param name="documents"
> > select="collection($collection-href)" />
> >      <xsl:with-param name="previous-number"
> select="$previous-number"
> > />
> >    </xsl:call-template>
> >  </xsl:template>
> >
> >  <xsl:template name="example">
> >    <xsl:param name="documents" />
> >    <xsl:param name="previous-number" required="yes" />
> >
> >    <xsl:if test="$documents[1]">
> >      <xsl:variable name="current-number" as="xs:integer"
> > select="xs:integer($previous-number+1)" />
> >
> >      <!-- Here we could use xsl:result-document and
> > xsl:apply-templates
> >           to kick off processing of our input document. -->
> >      <example seq="{$current-number}" />
> >
> >      <!-- Now we recursively process the next document in
> our list -->
> >      <xsl:call-template name="example">
> >        <xsl:with-param name="documents"
> select="remove($documents, 1)"
> > />
> >        <xsl:with-param name="previous-number"
> select="$current-number"
> > />
> >      </xsl:call-template>
> >    </xsl:if>
> >
> >    <!-- Here, if not($documents), we could write out our
> >         last number to some file that we use to track our
> >         sequence number across time. -->
> >  </xsl:template>
> >
> > </xsl:stylesheet>
> >
> > Running this w/ the example collection document and no override of
> > $previous-number would produce
> >
> > <example seq="1"/>
> > <example seq="2"/>
> > <example seq="3"/>
> >
> > whereas setting $previous-number to 3 would produce
> >
> > <example seq="4"/>
> > <example seq="5"/>
> > <example seq="6"/>
> >
> >
> > Jim
> >
> > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - - - -
> > James A. Robinson                       jim.robinson@xxxxxxxxxxxx
> > Stanford University HighWire Press      
> http://highwire.stanford.edu/
> > +1 650 7237294 (Work)                   +1 650 7259335 (Fax)