Re: unction return value not a node?

Hello,

ok, now I remember about xsl:value-of/xsl:sequence, working ...  great
mailing list. many thanks!

Best reagards

Bartolomeo

Il giorno mer, 08/09/2010 alle 16.25 +0100, David Carlisle ha scritto:
> On 08/09/2010 16:16, Bartolomeo Nicolotti wrote:
> > Hello,
> >
> > Sorry but XSLT 2.0 and XPath 2.0 book is more than 1000 pages, so I'm
> > writing this:
> >
> > I've this xpath expression that returns a node stored in a variable:
> >
> >      <xsl:variable name="x" select="($airTraveler/preceding-sibling::ota:AirTraveler[@PassengerTypeCode!='INF' and substring( concat( gal:normNames( ota:PersonName/ota:Surname ), concat( gal:normNames( ota:PersonName/ota:GivenName ),gal:normNames( ota:PersonName/ota:NamePrefix ))),1,16) = $srnNP16 ], $airTraveler)[1]"/>
> >
> >
> > then if I do
> >
> >      <xsl:value-of select="$x/preceding-sibling::ota:AirTraveler"/>
> >
> > I obtain the preceding-sibling nodes.
> >
> > but if I write this function to use the same xpath expression, quite complicated, in two places
> >
> >    <xsl:function name="gal:func">
> >      <xsl:param name="airTraveler"/>
> >      <xsl:param name="srnNP16"/>
> >      <xsl:value-of select="($airTraveler/preceding-sibling::ota:AirTraveler[@PassengerTypeCode!='INF' and substring( concat( gal:normNames( ota:PersonName/ota:Surname ), concat( gal:normNames( ota:PersonName/ota:GivenName ),gal:normNames( ota:PersonName/ota:NamePrefix ))),1,16) = $srnNP16 ], $airTraveler)[1]"/>
> >    </xsl:function>
> >
> > but when I write:
> >
> >      <xsl:variable name="x" select="gal:func($airTraveler, $srnNP16 )"/>
> >      <xsl:value-of select="$x/preceding-sibling::ota:AirTraveler"/>
> >
> > I don't obtain any preceding sibling.
> >
> > Could you tell me why?
> >
> > Many thanks
> >
> > Bartolomeo
> >
> In the first case you are selecting a node in an input document and then 
> giving the string value of its preceding sibling(s)
> 
> In the second case with the function you are returning a text node 
> (newly generated, not yet in any document) which is the string value of 
> some node, and then attempting to select a sibling of this newly 
> generated node which has no siblings.
> 
> perhaps you want your gal:func function to return a node in the source 
> document rather than the string value of such a node, in which case use 
> xsl;sequence, not xsl:value-of
> 
> david
> 
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