Re: [xsl] find position of first occurrence in a node set

[James Neff <jneff@xxxxxxxxxxxxxxxx>]

Jay,

I feel like this is a rather elementary question  and a bit embarrased 
to ask so I'm sending this to you off-list, I hope you don't mind.

Two questions in regards to your answer...


1)  I'm not sure why you have the <xsl:template> instruction there other 
than to make sure the stylsheet you tested with is a proper one.  For my 
use I am doing this:

<xsl:variable name="current_transaction_set" >
   <xsl:copy-of select="current-group()" />
</xsl:variable>
                              
<xsl:variable name="first_hl_position">
   <xsl:number select="$current_transaction_set/*[@type='HL'][1]"/>
</xsl:variable>


This gives me the correct value I'm looking for from the <xsl:number> 
instruction.  Am I missing something by not using the template 
instruction?  Or is this just a different solution to the same problem 
(is one better than another)?

2)  As you can see I'm having to copy in the current-group() to a 
variable before I can apply the <xsl:number> instruction.  I tried this:

   <xsl:number select="current-group[@type='HL'][1]"/>

But the value I get in return is wrong.  It seems to be counting the 
attributes as well as the <segment> elements.  I really don't understand 
why that is.  Would you please explain that to me?  Is there a way to 
tell the "select" attribute of the <xsl:number> instruction to ignore 
the attributes of the <segement> elements so I don't have to worry about 
the $current_transaction_set variable?


Thanks again,

Jim Neff



JBryant@xxxxxxxxx wrote:

> Hi, James,
>
> Did you change companies? I recall your e-mail used to be something else 
> (or perhaps I mis-remember).
>
> Anyway, you can use the xsl:number instruction to get what you want:
>
> <?xml version="1.0" encoding="UTF-8"?>
>
> <xsl:stylesheet version="2.0" 
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
>
>  <xsl:template match="/">
>    <xsl:number select="transaction_set/segment[@type='HL']"/>
>  </xsl:template>
>
> </xsl:stylesheet>
>
> Just tested it with Saxon 8.4 and got 3.
>
> Jay Bryant
> Bryant Communication Services
> (presently consulting at Synergistic Solution Technologies)
>
>
>
>
> James Neff <jneff@xxxxxxxxxxxxxxxx> 
> 07/29/2005 01:08 PM
> Please respond to
> xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>
>
> To
> XSL list <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
> cc
>
> Subject
> [xsl] find position of first occurrence in a node set
>
>
>
>
>
>
> Greetings,
>
> I have a node set that looks like this:
>
> <transaction_set>
>
>  <segment type='SL'>
>    A
>  </segment>
>
>  <segment type='GS'>
>    B
>  </segment>
>
>  <segment type='HL'>
>    C
>  </segment>
>
>  <segment type='PR'>
>    D
>  </segment>
>
>  ....
>
> </transaction_set>
>
>
> I need to find the position of the first <segment> element that has the 
> type of 'HL'.  So for my example above it should return 3.
>
>
> Thanks you in advance,