Re: xpath expression problem (a/b/c)[2]

[Scott_Boag]

Hi Mike.  I think the problem is that your example uses a match pattern
(http://www.w3.org/TR/xslt#patterns), rather than a full XSLT/XPath
pattern.  I don't think the XPath grouping expression ('(' Expr ')' -- part
of a FilterExpr, http://www.w3.org/TR/xpath#NT-FilterExpr) is allowed in a
match pattern.  Note that both Saxon and XT will also throw an error on
this.

If I take out the grouping expression in the match pattern, but use that
expression as a select pattern, the stylesheet seems to build fine:

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl
="http://www.w3.org/1999/XSL/Transform";
xmlns:weirdns="#WeirdScenes" exclude-result-prefixes="weirdns">

<xsl:template match="/">
 <xsl:apply-templates select="(/doc/a/b)[2]"/>
</xsl:template>

<xsl:template match="/doc/a/b[2]">
 <out>found it!</out>
</xsl:template>

</xsl:stylesheet>

Yields:
<?xml version="1.0" encoding="UTF-8"?>
2

But note that your template doesn't fire in this case, because the
proximity predicate is on the child, rather than the group.  Frankly, I
can't think of a good way to do this (i.e. make a proximity predicate on
the group) as a match pattern off the top of my head.

-scott




                                                                                
                                   
                    Michael                                                     
                                   
                    Wittmann             To:     [EMAIL PROTECTED]              
                        
                    <[EMAIL PROTECTED]       cc:     (bcc: Scott 
Boag/CAM/Lotus)                                       
                    on.org>              Subject:     xpath expression problem 
(a/b/c)[2]                          
                                                                                
                                   
                    08/05/2001                                                  
                                   
                    10:19 AM                                                    
                                   
                                                                                
                                   
                                                                                
                                   




hi,

i'm having problems extracting the nth occurrence of a specific tag from
a xml document.

xml source:

<doc>
<a><b>1</b></a>
<a><b>2</b></a>
<a><b>3</b></a>
</doc>

i'm looking, say, for the 2nd occurrence of <b></b> using the following
xsl:

<xsl:template match="(/doc/a/b)[2]">
 <out>found it!</out>
</xsl:template>

this works perfectly with a freeware tool "xpath tester" (version 1.0,
from fivesight techn.), which uses xalan 2.1.0. it does not work,
however, when using

java org.apache.xalan.xslt.Process -in a.xml -xsl test.xsl

on the command line. in the latter case, the output is:

XSLT Error:(javax.xml.transform.TrabsformerConfigurationException):
Extra illegal tokens: ')', '[', '2', ']'

seemingly, the parenthesis-syntax is not legal. can anybody help?


i'm using xalan-j 2.1.0 and java version 1.3.1; i tried xalan-j 2.2D6 on
win2k. no difference.

bye

michael

ps: please, reply cc to [EMAIL PROTECTED]