Re: [xsl] First Occurance Problem

[Jeni Tennison <jeni@xxxxxxxxxxxxxxxx>]

David,

> me
>       <xsl:copy-of select="(agg2/tag1[string(.)])[1]"/>
>
> Jeni
>      <tagx>
>         <xsl:value-of select="(agg2/tag1[string(.)])[1]" />
>       </tagx>
>
> Note that the ( )[1] is requrired in my version (with copy-of) but
> isn't actually needed in Jeni's (with value-of) as that always just
> takes the value of the first node in document order.
>
> Jeni's either just making it explicit for pedagogical reasons, or
> preparing us all for XSLT2 where the first node semantics will be
> replaced by returning a sequence of all values if I recall
> correctly.

I was making it explicit for pedagogical reasons. XSLT 2.0's
<xsl:value-of> will still act as it does in XSLT 1.0; it's only if you
add a separator attribute that it creates a text node in which all the
string values of the items in the sequence are included, separated by
the string specified in the sequence attribute, e.g.:

  <xsl:value-of select="(1, 2, 3)" />  =>  "1"
  
  <xsl:value-of select="(1, 2, 3)"
                separator=" " />       =>  "1 2 3"

  <xsl:value-of select="(1, 2, 3)"
                separator"" />         =>  "123"

Cheers,

Jeni

---
Jeni Tennison
http://www.jenitennison.com/


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