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RE: Weird XPath evaluation differences between Saxon and Xalan

2005-06-09 05:48:58
In XSLT 1.0, xsl:value-of when applied to a set of nodes gives you the value
of the first node, and ignores the others.

In XSLT 2.0, it gives you the values of all the nodes - by default space
separated.

If you run a 2.0 processor but specify version="1.0" you get
backwards-compatible behavior, i.e. the 2.0 processor gives you the same
result as a 1.0 processor.

Michael Kay
http://www.saxonica.com/ 

-----Original Message-----
From: Simon OUALID [mailto:symon(_at_)tatouage(_dot_)fr] 
Sent: 08 June 2005 22:47
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Weird XPath evaluation differences between 
Saxon and Xalan

Hi,

I have a question regarding a XPath evaluation difference 
between Saxon 
and Xalan (using the latest release of both tools), with the same XML 
datas and the XPath query !

Considering this XML tree :

<GROUP>
  <SOMETHING>
    <NAME>AA</NAME>
  </SOMETHING>
  <SOMETHING>
    <NAME>BB</NAME>
  </SOMETHING>
  <SOMETHING>
    <NAME>CC</NAME>
  </SOMETHING>
</GROUP>

and the following XPath query :

<xsl:value-of select="./SOMETHING/NAME"/>
in the context of a <xsl:apply-templates select="/GROUP"/>

Xalan will output "AA" but Saxon output "AABBCC" !

Stranger is than changing the version of the stylesheet modify the 
comportment of Saxon : using a 1.0 stylesheet, Saxon will output "AA" 
(as Xalan do !), but using à 2.0 stylesheet, Saxon output "AABBCC".

What's the standard says about that ? I'd like to follow W3C 
prescription !

Should I change my XPath query with GROUP like :

<xsl:value-of select="./SOMETHING//NAME"/>

or maybe :

<xsl:value-of select="./SOMETHING[*]/NAME"/>

Thanks forward for any information on this subject. For 
information, the 
result I expect is "AABBCC".

Symon


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