After reading around Google search results, and experimenting a bit I'm stuck with trying to renumber elements in an XML source via XSLT.

If I have something like:

<something uid="1" />
<something uid="2" />
<something uid="3" />

What would be the most straight-forward XSLT code to allow me to pass in a parameter to allow me to insert an element between uid's 1 and 2, giving it's uid attribute the value of "2" (ie: the same value as the element it is inserted before) and renumbering the subsequent elements' uid attributes accordingly to give me:

<something uid="1" />
<something uid="2" /> - this is the newly inserted element
<something uid="3" /> - this was formally UID="2"
<something uid="4" /> - this was formally UID="3"

Note that uid="1" remains constant, it is only uid="2" and uid="3" that get renumbered to allow for the newly inserted element.

Thanks

Something like this perhaps:

<xsl:for-each select="something[@uid < $param]">
  <something uid="{@uid}"/>
</
<... new element here ...>
<xsl:for-each select="something[@uid >= $param]">
  <something uid="{@uid+1}"/>
</

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

Thanks Michael!
I think I understand, but in the case that I have in mind the XSLT that I am using does not shout to me an obvious "before", "middle" and "after" section in which to port your code. If it wouldn't be too presuming, please could you give me a pointer as to how I would merge your code into the following.

This XSLT will take a new Test Case and copy it into the XML stream at the top (I then use a separate stylesheet to order it in any manner desired). However the newly inserted Test Case will have the same UID as an existing one - hence the problem described in my original post.
Many thanks

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

<xsl:output method="xml" encoding="utf-8" indent="yes" />

<xsl:param name="uid" />
<xsl:param name="oid" />
<xsl:param name="active" />
<xsl:param name="type" />
<xsl:param name="attach" />
<xsl:param name="item" />
<xsl:param name="result" />
<xsl:param name="testcomments" />
<xsl:param name="datelastmodified" />

<xsl:template match="/testsuite">

<xsl:element name="testsuite">
    <xsl:element name="testcase">
      <xsl:attribute name="uid"><xsl:value-of select="$uid" /></xsl:attribute>
      <xsl:attribute name="oid"><xsl:value-of select="$oid" /></xsl:attribute>
      <xsl:element name="active"><xsl:value-of select="$active" /></xsl:element>
      <xsl:element name="type"><xsl:value-of select="$type"/></xsl:element>
      <xsl:element name="attach"><xsl:value-of select="$attach" /></xsl:element>
      <xsl:element name="item"><xsl:value-of select="$item" /></xsl:element>
      <xsl:element name="result"><xsl:value-of select="$result" /></xsl:element>
      <xsl:element name="testcomments"><xsl:value-of select="$testcomments" /></xsl:element>
    </xsl:element>
    <xsl:apply-templates />
</xsl:element>
  </xsl:template>

  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()" />
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>

Oh dear - I'm not doing well! I've tried the following, thinking that if I perform the test after copying from the source to the output tree, but before applying that it ought to perform the test (there's logic in there somewhere folks!), but to no avail I'm afraid :(

  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:if test="testcase[@oid >= $oid]">
        <testcase oid="{@oid+1}" />
      </xsl:if>
      <xsl:apply-templates select="@*|node()" />
    </xsl:copy>
  </xsl:template>

I can't really follow the logic of your code - it seems to handle a single testsuite that contains a single testcase.

You can of course invert the code I gave you so that when processing an individual <something> you use an xsl:choose condition to decide whether it is before or after the insertion point and therefore whether to add 1 to the @uid attribute:

<xsl:template match="something">
  <something>
  <xsl:attribute name="uid">
    <xsl:choose>
       <xsl:when test="@uid >= $param">
          <xsl:value-of select="@uid"/>
       </
       <xsl:otherwise>
          <xsl:value-of select="@uid+1"/>
       </


Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

quote:" I can't really follow the logic of your code"

Apologies - the code works by having an XML file already containing test cases. When the parameters for a new test case are passed to the XSLT code, and that XSLT used to manipulate the XML it will add a single new Test Case to the top of the file. As described though, I need to modify the XSLT to add 1 to the uid of the existing test cases as they are written to the output by the copy in the template at the end.