Re: [xsl] How to tell if no data returned

["andrew welch" <andrew.j.welch@xxxxxxxxx>]

On 10/2/06, Garry <garry@xxxxxxxxxxxxxxxxxx> wrote:
> Hi all
>
> I have a problem which I would normally fix using a variable. I have a
> routine similar to that below. What I want to know is if it doesnt get into
> the for-each loop. If it doesnt it means no rows are written and I would
> like to add a note to the page if this is the case.
>
> <xsl:for-each
> select="/stages/competition/leg/stage/classification/competitor[../../@no=$s
> Num]">
> <xsl:if test="../@type = 'STAGE'">
> <xsl:if test="../../../../@cno=$paramVal1">
>
> ... row detail written here
>
> </xsl:if>
> </xsl:if>
> </xsl:for-each>

Well a exact conversion would be:

<xsl:variable name="competitors"
select="/stages/competition/leg/stage/classification/competitor[../../@no=$sNum]"/>

<xsl:choose>
 <xsl:when test="$competitors">
   <xsl:for-each select="$competitors">
      ....
  </
 <xsl:otherwise>
   note....


But if those xsl:if's are the only children of the xsl:for-each then
the variable should really be:

select="/stages[@cno=$paramVal1]/competition/leg/stage[@no=$sNum]/classification[@type
= 'STAGE']/competitor"

cheers
andrew