RE: [xsl] Do something if no items in for-each meet criteria

["Michael Kay" <mhk@xxxxxxxxx>]

There are two approaches.

(1) read the input twice

for-each select="xxx"
  yyy
/for-each
if (not(xxx)) message

(2) put the output in a variable

variable v
  for-each select="xxx"
    yyy
  /for-each
/variable
choose
 when test="$v=''" message /when
 otherwise copy-of select=$v /otherwise
/choose

Michael Kay

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Peter Hollingsworth
> Sent: 12 September 2003 00:12
> To: XSL-List@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] Do something if no items in for-each meet criteria
> 
> 
> I'm trying to
>    1) go through a set of nodes
>    2) if any matches my criteria, display it
>    3) if NONE matches my criteria, display a message like "None"
> 
> For example, imagine this xml listing some animals:
> <animal>
>    <type>snake</type>
>    <furry>false</furry>
> </animal>
> <animal>
>    <type>fish</type>
>    <furry>false</furry>
> </animal>
> 
> and this XSL that lists all the ones with fur:
> The following animals are furry:<br/>
> <xsl:for-each select="animal">
>    <xsl:if test="furry = 'true'">
>      <xsl:value-of select="type"/><br/>
>    </xsl:if>
> </xsl:for-each>
> [if no animals were furry, print "None are furry"]  <---how 
> can I do this?
> 
> Any way I can accomplish what I'm trying to do on the last line above?
> 
> Thanks.
> 
> --Peter
> 
> 
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> 


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