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[xsl] RE : [xsl] document() vs. current()

Florent Georges (darkman_spam@...)

Marco Plum wrote:

  Hi

> So I thought that perhaps the function document() changes the context
> and I have to use the function current(), but I did not get the
> result I expected...

  Yes, it does.  What did you try?  Could you please try:

    current()/dd/...

  Regards,

--drkm

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Re: [xsl] document() vs. current()

Anton Triest (anton@...)

current()/dd/vd[@... ='x']/@...
should work (tested with saxon 8.6)

HTH,
Anton

Marco Plum wrote:

>If I change
>
>/dd/vd[@... ='x']/@...
>
>into its actual value (1), everything works fine...
>
>So I thought that perhaps the function document() changes the context and I have to use
the function current(), but I did not get the result I expected...
>
>  
>


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[xsl] document() vs. current()

Marco Plum (m.plum@...)

I hope that this
hasn't been asked here before - at least I did not find a solution searching through the
list archive:

My XSL contains a lookup table im accessing via document(''). In order to know, which value
I need to look up, I have to get another value from my input XML. Im trying something like
that:

INPUT:


	
	
	



XSL:


	
		
		
		
		
	



If I change

/dd/vd[@... ='x']/@...

into its actual value (1), everything works fine...

So I thought that perhaps the function document() changes the context and I have to use the
function current(), but I did not get the result I expected...

What am I doing wrong?

Best regards,
Marco Plum

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Re: [xsl] Finding the first among equals using XPath

Wendell Piez (wapiez@...)

Peter,

This is a de-duplicating problem.

As in the Muenchian technique for grouping, de-duplication can be 
achieved using keys.

For example, if you have a key declaration:

I am sure this is a hoary old one, but I could not work out the right
>runes to achieve it, nor the right keywords to search for to find an
>answer
>
>If I have XML like the following:
>
>
>  
>   
>	
>    
>     
>   
>   
>  
>   
>      
>	
>     
>      
>      
>   
>     
>      
>	
>   
>      
>	   
>
>
>I a have a for-each loop over the W elements. Inside the for-each I
>want to select one X with each value of Y that exists within that W.
>
>So for the above example, for //W[1] I want to get the first and third
>or second and third X elements, for //W[2] I want all three X elements
>and for //W[3] I want any one of the X elements, but only one of them.
>
>I hope that bit is clear.
>
>I have run out of ideas now, so I have finally admitted defeat (a hard
>thing for an engineer) and am asking for your collective wisdom.
>
>I want a node-set so I can do a for-each on that, so I would prefer to
>find a select specifier based on clever use of axes and predicates.


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Re: [xsl] Merging attributes in one XML file with node values in another (identical structure)

Wendell Piez (wapiez@...)

At 11:51 AM
6/22/2006, David wrote:
> > awesomely elegant solution works
>
>'course elegance, like beauty, is in the eye of the beholder. Walking
>over the tree(s) recursively carrying a bit of state with you might take
>some more lines of code, but is probably more efficient than working out
>/descendant::*[$n] each time.

Indeed, but code footprint does make a difference, and as soon as you 
start passing parameters around, XSLT's syntax proves a significant 
impediment to its appearing graceful -- its steps may be right, but 
not light. Whether something can *be* graceful without *appearing* so 
is something I leave for us to ponder ... though I acknowledge that 
an algorithm may be nice even if its synactic expression is not.

Sort of like dancing in hiking boots. If everyone is doing it, we may 
fail to notice. But that doesn't make it pretty.

Cheers,
Wendell

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Re: [xsl] Finding the first among equals using XPath

Wendell Piez (wapiez@...)

At 11:58 AM
6/22/2006, David wrote:
>xslt2's for-each-group makes it easier (or at least easier to read) but
>any xslt 1 grouping construct would work here. Muenchian grouping (ie
>using keys) is the usual approach, but making the keys unique in
>subtrees rooted at each W is a bit tiresome, so unless you have 100's of
>X below each W I'd just write it directly in XPath
>
>something like
>
>
>   





   
     
     

     
     
       

       
     
   



t:\ftemp>xslt peter.xml peter.xsl con
/V/W[1]
got X/@...
got X/@...
/V/W[2]
got X/@...
got X/@...
got X/@...
/V/W[3]
got X/@...

t:\ftemp>type peter2.xsl






   
     
     

     
     

     
   



t:\ftemp>xslt peter.xml peter2.xsl con
/V/W[1]
got X/@...
got X/@...
/V/W[2]
got X/@...
got X/@...
got X/@...
/V/W[3]
got X/@...

t:\ftemp>


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[xsl] Finding the first among equals using XPath

Peter Riocreux (peter.riocreux@...)

I am sure this is
a hoary old one, but I could not work out the right
runes to achieve it, nor the right keywords to search for to find an
answer

If I have XML like the following:


  
   
       
    
     
   
   
  
   
      
       
     
      
      
   
     
      
       
   
      
	  


I a have a for-each loop over the W elements. Inside the for-each I
want to select one X with each value of Y that exists within that W.

So for the above example, for //W[1] I want to get the first and third
or second and third X elements, for //W[2] I want all three X elements
and for //W[3] I want any one of the X elements, but only one of them.

I hope that bit is clear.

I have run out of ideas now, so I have finally admitted defeat (a hard
thing for an engineer) and am asking for your collective wisdom.

I want a node-set so I can do a for-each on that, so I would prefer to
find a select specifier based on clever use of axes and predicates.

I am stuck with using XSL 1.0

Can anyone help?

Cheers,

Peter

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Re: [xsl] Merging attributes in one XML file with node values in another (identical structure)

Wendell Piez (wapiez@...)

At 10:59 AM
6/22/2006, David wrote:
>xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
>
>
>  
>   
>

Re: [xsl] Finding the first among equals using XPath

David Carlisle (davidc@...)

> I am stuck with using XSL 1.0

xslt2's for-each-group makes it easier (or at least easier to read) but
any xslt 1 grouping construct would work here. Muenchian grouping (ie
using keys) is the usual approach, but making the keys unique in
subtrees rooted at each W is a bit tiresome, so unless you have 100's of
X below each W I'd just write it directly in XPath

something like