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From "Griffin,Sean" <SGRIF...@CERNER.COM>
Subject RE: [FOP0.95]"Group-by" not functioning
Date Tue, 09 Dec 2008 15:03:13 GMT

XSLT processing and XSL-FO processing are two completely separate steps.  FOP simply provides
an XML/XSLT input as a convenience for feeding the result of an XSLT transformation that generates
an XSL-FO document as its output directly into FOP.  The group-by functionality that you're
referencing is only available in an XSLT 2.0-capable processor.  The only processor at this
time that can do XSLT 2.0 is Saxon 8.x+.  When running in XML Spy you must be running the
Saxon processor while when running FOP you're likely running what ships with it by default
- Xalan - which does not understand XSLT 2.0.


If you want to use XSLT 2.0 and want to use the FOP command-line script as your launcher then
you'll need to change that script to put Saxon on the classpath instead of Xalan.




From: Jos van Roosmalen [mailto:jos.v.roosmalen@gmail.com] 
Sent: Tuesday, December 09, 2008 8:34 AM
To: fop-dev@xmlgraphics.apache.org
Subject: [FOP0.95]"Group-by" not functioning



I have a problem with FOP. Consider the stripped down minimal Input XML and XSL below.

If I run this group.xsl on input.xml using XMLSpy 2005 I get the expected output:

<?xml version="1.0" encoding="UTF-8"?>
   Group found: group1Key
   Group found: group2Key

However if I run it using FOP 0.95 with:

fop -xml input.xml -xsl group.xsl -foout test.fo

It is complaining about the current-grouping-index():

SystemId Unknown; Line #6; Column #64; function token not found.

If I remove that current-grouping-index(), and only print Group Found:

 <xsl:for-each-group select="item" group-by="column[@index='48']">
   Group found

I expect 2 times "Group found" but I end with an *empty* XML File:

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


1. Why is current-grouping-index() not working?
2. Why is even group-by not working?
3. How to get this working?

Thanks you, Jos

<?xml version="1.0" encoding="ISO-8859-1"?>
<!-- group.xsl -->
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
<xsl:template match="items"> 
 <xsl:for-each-group select="item" group-by="column[@index='48']">
   Group found: <xsl:value-of select="current-grouping-key()"/>  

<!-- input.xml -->
 <item><column index="48" name="mnemo">group1Key</column></item>
 <item><column index="48" name="mnemo">group1Key</column></item>
 <item><column index="48" name="mnemo">group2Key</column></item>


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