On Thu, Dec 27, 2001 at 09:08:03AM -0800, Gary L Peskin wrote: > 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.
Ah I see what you mean.. different 'views' of the same tree. Pity that the definition of node equality is so restricted. Thanks for the explanation :) --Jeff > 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
