Jeff -- I think the problem is that these are two different sets of nodes. In your XSLT, the first "a" target appears as a child of the xsl:variable for treefrag1 whereas the second "a" target appears as a child of the xsl:variable for treefrag2.
I haven't tried it but if you try the example from exslt page, it should work. Here, we are working with the same nodes that are being selected into different variables. HTH, Gary > -----Original Message----- > From: Jeff Turner [mailto:[EMAIL PROTECTED] > Sent: Thursday, December 27, 2001 6:10 AM > To: [EMAIL PROTECTED] > Subject: xalan:difference question > > > Hi, > > I'm trying to use the extension 'difference' function, whose > entire documentation consists of: > > "Implemented in org.apache.xalan.lib.Extensions, > difference(node-set1, > node-set2) returns a node-set with the nodes in node-set1 and not in > node-set2." > > -- http://xml.apache.org/xalan-j/extensionslib.html#difference > > > I have the following XSL: > > <?xml version="1.0"?> > <xsl:stylesheet version="1.0" > xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; > xmlns:xalan="http://xml.apache.org/xalan"; > extension-element-prefixes="xalan" > > > > <xsl:template match="/"> > <xsl:variable name="treefrag1"> > <target>a</target> > <target>b</target> > <target>c</target> > </xsl:variable> > <xsl:variable name="treefrag2"> > <target>a</target> > <target>b</target> > </xsl:variable> > > <xsl:for-each > select="xalan:difference(xalan:nodeset($treefrag1), > xalan:nodeset($treefrag2))/*"> > <xsl:message> Got: <xsl:value-of > select="."/> </xsl:message> > </xsl:for-each> > <xsl:message>Finished!</xsl:message> > </xsl:template> > </xsl:stylesheet> > > > Ie, two result fragments converted to nodesets, which I then > want to determine the 'difference' of. I'm expecting a > nodeset containing just <target>c</target>. Here's what I get: > > $ java org.apache.xalan.xslt.Process -in small.xsl -xsl > small.xsl -out /dev/null > Got: a > Got: b > Got: c > Finished! > > > Can anyone see what's wrong here? > > Btw, assuming Xalan follows the semantics of exslt's > set:difference, this may be relevant: > http://www.exslt.org/set/functions/difference/index.html But that demonstrates the node-set coming from a select on the source document, not from an xalan:nodeset(). Could that make a (ahem) difference? Thanks, --Jeff
