Referencing the line before in a transform

lemon · September 13th, 2007, 04:24 AM

Hi,

I have been stuck trying to create an XSLT that incrementally references the line before when transforming.

My source content looks like this:

<SourceStuff>
<Element action="Name1"></Element>
<Element action="Name2"></Element>
<Element action="Name3"></Element>
<Element action="Name4"></Element>
<Element action="Name5"></Element>
<Element action="Name6"></Element>
</SourceStuff>

And the end result needs to look like this:

<seqRun>
  <El act="Name1" seq="Start">XX</El>
  <El act="Name2" seq="Name1">XX</El>
  <El act="Name3" seq="Name2">XX</El>
  <El act="Name4" seq="Name3">XX</El>
  <El act="Name5" seq="Name4">XX</El>
  <El act="Name6" seq="Name5">XX</El>
</seqRun>

I can do everything except the seq= part where I do not understand how to reference the name of the element one line higher in the file.

I have tried using variables and some other options but I have not managed to get anything even close. While I have shown the names as Name1..Name6 here the actual names are not sequential.

Would anyone be able to point me in the right direction?

thanks very much
Jim

samjudson · September 13th, 2007, 04:50 AM

Code:

<xsl:attribute name="seq">
<xsl:choose>
<xsl:when test="count(preceding-sibling::Element)=0">Start</xsl:when>
<xsl:otherwise>
    <xsl:value-of select="preceding-sibling::Element[1]/@action" />
</xsl:otherwise>
</xsl:choose>
</xsl:attribute>

/- Sam Judson : Wrox Technical Editor -/

lemon · September 13th, 2007, 06:02 AM

Awesome Sam, thank you very much for your assistance.