Re: [xsl] Linking Variable to the Path

[Matthieu Ricaud <matthieu.ricaud@xxxxxxxxx>]

Hi Yaswanth, 

> Hi Peter and Everyone out there!
>   Thanks for the reply ~
> 
> I have '//every[1]/event[1]' as the destination attributes value.
> And there is 'name' attribute  for '//every[1]/event[1]'
> i.e //every[1]/event[1]/@name gives me the Value 'Ready'.
> 
> Why not $dest/@name gives me the same ?
> How to get it  ?

In your fisrt xsl <xsl:variable name="dest" 	select="//every[1]/event[1]"/>  will get a *node* /root/every[1]/event[1], 
which do has a @name attribute. Then $dest/@name will get this attribute value.

But in your second xsl  <xsl:variable name="dest" select="//pattern[1]/connection[1]/@destination"/>   will get the *string* "//every[1]/event[1]"
which is the value of @destination. $dest is not a node, it's a string and you can't do $dest/@name, it doesn't make sens.

As said Christoph you need to evaluate the string, and there is unfortunately no xslt 1.0 native way to do this !
You need a extension eval function depending on your xslt processor. 
If you use saxon for example, something like this should go <xsl:value-of select="saxon:eval($dest)/@name"/>.
With msxml you can do your own eval function in jscript, have a look at http://www.xmleverywhere.com/tips/xslt.htm
You can also use EXSLT extensions I think.

Hope this help, 

Cheers, 

Matthieu.
 
> Regards
> Yaswanth 
> 
> 
> -----Original Message-----
> From: Hofman, Peter [mailto:peter.hofman@xxxxxxxxxxxxx] 
> Sent: Wednesday, August 22, 2007 1:54 PM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE: [xsl] Linking Variable to the Path 
> 
> Your variable $dest contains a sequence of destination attributes
> values, which (of course) do not contain a name attribute.
> 
> You need to analyze the contents of connection/@destination and use this
> in a selection of event elements.
> 
> Regards,
> Peter
> 
> >-----Original Message-----
> >From: Yaswanth Kumar Ravella [mailto:yaswanth.mtrx@xxxxxxxxx] 
> >Sent: woensdag 22 augustus 2007 10:16
> >To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> >Subject: [xsl] Linking Variable to the Path 
> >
> >
> >Hi,
> >
> >::I am having an XML file like this ::
> >
> ><root>
> > <every>
> >   <event name="Ready"/>
> > </every>
> > <pattern>
> >   <connection destination="//every[1]/event[1]" />		
> > </pattern>
> ></root>
> >-------------------------------
> >::When my XSL file has this code::
> >
> ><xsl:template match="root">   
> >   <xsl:variable name="dest" 	select="//every[1]/event[1]"/>   
> >   <xsl:value-of select="$dest/@name"/>   
> ></xsl:template>
> >
> >It prints 'Ready'.
> >Here I am directly assigning variable 'dest' to the path of the event.
> >This is ok.
> >-------------------------------
> >::When I changed my XSL code to ::
> >
> ><xsl:template match="root">   
> >   <xsl:variable name="dest"
> >select="//pattern[1]/connection[1]/@destination"/>   
> >   <xsl:value-of select="$dest/@name"/>   
> ></xsl:template>
> >
> >It doesn't print 'Ready' or anything.
> >Here I am storing variable 'dest' with the value of the 
> >'connection/@destination', Which I expected to work properly 
> >but it is not working.