Re: [xsl] Positional tests

["Joris Gillis" <roac@xxxxxxxxxx>]

Tempore 19:17:58, die 03/02/2005 AD, hinc in  
xsl-list@xxxxxxxxxxxxxxxxxxxxxx scripsit Paul Clarke  
<pclarke@xxxxxxxxxxxxxxxx>:

> I need to find out if a block element that I process is the first one  
> with
> respect to its ancester S1, S2 or S3 elements. The hierarchy looks  
> something
> like this:
>
> 	test=". = ancestor::S3//block[1] or . = ancestor::S2//block[1] or .
> = ancestor::S1//block[1]"
>
> But this slows down processing enormously.

Hi,

It could be (I'm not sure) that the 'xsl:number' element is faster than  
XPath.

If that's the case, then you might use this:

<xsl:variable name="cnt">
	<xsl:number count="block" from="*[starts-with(local-name(),'S')]"  
level="any"/>
</xsl:variable>
<xsl:if test="self::block and $cnt='1'">
	<xsl:attribute name="hit">true</xsl:attribute>
</xsl:if>

regards,
--
Joris Gillis (http://www.ticalc.org/cgi-bin/acct-view.cgi?userid=38041)
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