& XSLT 
I've been struggling with this for days. The problem seems simple,  
but I've had no luck...Here's what I'm trying to do:

   -  Group the <msgblocks>  by attribute 'id'
   -  Use the current grouping id (@id) to sort the data
   - Arrange the data I want to extract from each sorted <msgblock>   
(errnum and message) into a series of balanced 4 column tables  
limited to a maximum of x number of
      rows, based on the value of the global param $cols
   - Write (or page) each table to a result-document

A subset of the xml looks like this:

<messages> 
   <msgblock id="2000"> 
     <msg-num> 0</msg-num>
     <errnum> 2000</errnum>
     <message>  No message</message>
   </msgblock> 

   <msgblock id="2001"> 
     <msg-num> 100</msg-num>
     <errnum> 2001</errnum>
     <message>  "Row not found"</message>
   </msgblock> 

   <msgblock id="2002"> 
     <msg-num> 101</msg-num>
     <errnum> 2002</errnum>
     <message>  "Value truncated"</message>
   </msgblock> 

   <msgblock id="2003"> 
     <msg-num> 102</msg-num>
     <errnum> 2003</errnum>
     <message>  "Using temporary table"</message>
   </msgblock> 

   <msgblock id="2004"> 
     <msg-num> 103</msg-num>
     <errnum> 2004</errnum>
     <message>  "Invalid data conversion"</message>
   </msgblock> 

   <msgblock id="2559"> 
     <msg-num> 130</msg-num>
         <errnum> 2559</errnum>
     <message>  "A row could not be converted to the new schema  
format"</message> 
   </msgblock> 

   <msgblock id="2532"> 
    <msg-num> 124</msg-num>
     <errnum> 2532</errnum>
     <message>  "Invalid data conversion: NULL was inserted for column  
'%1' on line %2."</message> 
   </msgblock> 

   <msgblock id="2005"> 
     <msg-num> 104</msg-num>
     <errnum> 2005</errnum>
     <message>  "Row has been updated since last time read"</message>
   </msgblock> 

   <msgblock id="2006"> 
     <msg-num> 105</msg-num>
         <errnum> 2006</errnum>
     <message>  "Procedure has completed"</message>
   </msgblock> 

   <msgblock id="2007"> 
     <msg-num> 106</msg-num>
     <errnum> 2007</errnum>
     <message>  "Value for column '%1' in table '%2' has changed"</ 
message> 
   </msgblock> 

   <msgblock id="2008"> 
     <msg-num> 111</msg-num>
     <errnum> 2008</errnum>
     <message>  "Statement cannot be executed"</message>
   </msgblock> 

   <msgblock id="2530"> 
     <msg-num> 123</msg-num>
     <errnum> 2530</errnum>
     <message>  "Database created without any schema"</message>
   </msgblock> 

   <msgblock id="2009"> 
     <msg-num> 200</msg-num>
     <errnum> 2009</errnum>
     <message>  "Warning"</message>
   </msgblock> 

   <msgblock id="2011"> 
     <msg-num> 80</msg-num>
     <errnum> 2011</errnum>
     <message>  "Unable to start database server"</message>
   </msgblock> 

   <msgblock id="2702"> 
     <msg-num> 1033</msg-num>
     <errnum> 2702</errnum>
     <message>  "Unable to start database server: Server fatal error"</ 
message> 
   </msgblock> 

   <msgblock id="2012"> 
     <msg-num> 81</msg-num>
     <errnum> 2012</errnum>
     <message>  "Invalid database server command line"</message>
   </msgblock> 

</messages> 


Grouping and sorting the <msgblock>  nodes is necessary because the  
@id's are not always in the right sequence. I can group and sort them  
properly with this snippet:

<xsl:for-each-group select="msgblock" group-by="@id"> 
                 <xsl:sort select="current-grouping-key()"/> 
		<for-each select=�current-group()�/> 
			<xsl:value-of select =�errnum�/> 
			<xsl:vale-of select=�message�/> 
		</for each> 
	<for-each-group> 

I can limit the number of table items by testing the global  
parameters $start-index (1) and $group-size (40) with something like  
this:

         <xsl:if test="position() &gt;= $start-index
             and position() &lt;= $group-size"> 
	.	
	.	
	.
         </xsl:if> 

(Thank you, Ms. Tennison)

I can see the logic in Micheal Kay's examples (town-by-columns, town- 
by-rows, towns-sorted-by-rows) in the XSLT 2.0 Programmer's  
Reference. But I can't seem to put them all together. (I always seem  
to end up dividing by zero).  I seemed close a couple of times, but  
I've had no luck. In fact, I seem to be going backwards.

Does anyone know how to do this?

Thanks in advance....

	------- bob wilkins ------


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