Re: [xsl] Incrementing a Global variable

[Rajendra S Rawat <rajsrawat@xxxxxxxxx>]

Hi! Bill

Your solution seems more logical.so I stopped.And
first gave it a try. But I could not use it, firstly
distinct-values() function raised an function not
found exception. Same happened with
<xsl:for-each-group. I know its an XSLT2.0 answer to
Muenchian Method.

I'am using Win2000 Professional on PIV machine
-XML SPY Professional v5 Rel2 
-Apache FOP 0.20.5 
-J2Sdk 1.4.2 with netbeans
-IE6 sp1
-Acrobat Reader 5.05


 I changed in xslt file <xsl:stylesheet version="2.0"
but same error bombed

What else should I do to use XSLT2.0. Do I need to
install some thing?

should i post the actual code?

Regards,
Raj

--- Bill Keese <billk@xxxxxxxxxxxxxxxxxxxx> wrote:
> (this is a resend; my original message bounced, I
> think)
> 
> Problem: print a list of students, grouping the
> students by their 
> language and printing a blank line between each
> group.  Number the blank 
> lines in addition to the lines with students' names.
> 
> So calling position() to get the number is
> insufficient, because 
> position() doesn't count the blank lines.
> 
> Mukul was commenting that this problem would be
> easier to solve if XSLT 
> supported something like variables. For example:
> 
>   <xsl:for-each select="Student">
>        <xsl:if test="TOption !=
> previous-sibling::Student[last()]/TOption">
>             <tr> <td> {counter} </td>  <td/> <td/>
> </tr>
>             counter++;
>        </xsl:if>
> 
>        <tr> <td> {counter} </td>  <td> {Name} </td>
> <td> { Toption } 
> </td> </tr>
>        counter++;
>    </xsl:for-each>
> 
> This is what Jarno's code essentially does, but
> Jarno had to use 
> recursion to simulate the loop, which is [arguably]
> a bit cumbersome.  
> However, you can do something the loop above, if you
> replace the 
> variable "counter" with a formula, which is
>   the previous number of students + the previous
> number of groups
> 
> In XSLT version 2 this is simply:
> 
> count(preceding-sibling::*) + 
>
count(distinct-values(preceding-sibling::*/TOption/text()))
> 
> And after the loop finishes, to compute the total
> number of lines 
> printed, you would do
> 
> count(Student) +
> count(distinct-values(Student/TOption/text()))
> 
> -------------
> By the way, an alternative to a single loop is to
> write a nested loop 
> (for-each language / for-each student).  This is
> what Americo's code 
> does, but his code is a bit complicated because he
> is programming in 
> XSLT V1, where there is no for-each-group operator 
> (http://www.w3.org/TR/xslt20/#d0e15262) .  But in
> XSLT V2 we would say this:
> 
>     <xsl:for-each-group select="Student"
> group-by="TOption">
>       <xsl:variable name="group-no"
> select="position()"/>
>       <xsl:for-each select="current-group()">
>         <tr>
>           <td> <xsl:value-of
> select="count(preceding-sibling::*) + 
> $group-no"/> </td>
>           <td> <xsl:value-of select="Name"/> </td>
>           <td> <xsl:value-of select="TOption"/>
> </td>
>         </tr>
>       </xsl:for-each>
>       <tr>
>         <td> <xsl:value-of 
>
select="count(current-group()[last()]/preceding-sibling::*)
> + $group-no 
> + 1"/> </td>
>         <td>  </td>
>         <td>  </td>
>       </tr>
>     </xsl:for-each-group>
> 
> Bill
> 
> 
>  XSL-List info and archive: 
> http://www.mulberrytech.com/xsl/xsl-list
> 


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