xslt + NaN

Hi,

I am trying to sum up a value using a published algorithm. The algoritm seems to get the correct value, but I cannot seem to format the value without getting NaN. Could anyone help.

Here is the XML.

<client name='Joe Bloggs'>

    <supplier name='A'>
        <product name='C'>
            <investment name='D='1200' price='5.50'/>
            <investment name='E' units='1200' price='3.50'/>
            <investment name='F' units='1345' price='6.55'/>
        </product>
    </supplier>

    <supplier name='B'>
        <product name='E'>
            <investment name='T' units='1200' price='5.50'/>
            <investment name='W' units='1200' price='3.50'/>
            <investment name='S' units='1345' price='6.55'/>
        </product>
    </supplier>

</client>

And here is the xslt.

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msxsl="urn:schemas-microsoft-com:xslt"
    xmlns:palantir="http://www.palantir.co.za"
    version="1.0">
   
<xsl:output
  method = "xml"
  version = "1.0"
  encoding = "UTF-8"
  indent = "yes"/>  
 
  <msxsl:script language="VBScript" implements-prefix="palantir">
  <![CDATA[
 
    Function Format(value)
         
         Format = value
         'Format = FormatCurrency(value)
         
    End Function
   
  ]]>
  </msxsl:script>  
 
  <xsl:template match="/">
  <table>
  <xsl:apply-templates/>
  </table>
  </xsl:template>
 
  <xsl:template match='client'>
  <tr>
    <td><xsl:value-of select='@name'/></td>
    <td>
   
        <xsl:call-template name='total-investment'>
            <xsl:with-param name='investment-set' select='//investment'/>
        </xsl:call-template>
   
    </td>
  </tr>
  </xsl:template>
 
  <xsl:template name='total-investment'>
    <xsl:param name='investment-set'/>
    <xsl:choose>
        <xsl:when test='$investment-set'>
            <xsl:variable name='first-node'>
                <xsl:apply-templates select='$investment-set[1]' mode='investment-price'/>
            </xsl:variable>
            <xsl:variable name='other-nodes'>
                <xsl:call-template name='total-investment'>
                    <xsl:with-param name='investment-set' select='$investment-set[position()!=1]'/>
                </xsl:call-template>
            </xsl:variable>
            <xsl:value-of select='palantir:Format(number(number($first-node) + number($other-nodes)))'/>
        </xsl:when>
        <xsl:otherwise>0</xsl:otherwise>
    </xsl:choose>
  </xsl:template>                                    
                                   
  <xsl:template match='investment' mode='investment-price'>
    <xsl:value-of select='@units * @price'/>
  </xsl:template>
 
</xsl:stylesheet>

The above xslt works, except when I comment back in the format code it doesn't work.
I have tried the xslt built in functions, and I am getting the same result.

Please help.
Regards
-craig.
LVL 1
cmainAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

b1xml2Commented:

MODIFIED XSLT DOCUMENT
======================
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method = "xml" version = "1.0" encoding = "UTF-8" indent = "yes"/>  
 
<xsl:template match="/">
<table>
<xsl:apply-templates/>
</table>
</xsl:template>
 
<xsl:template match='client'>
<xsl:variable name="sum">
     <xsl:call-template name='total-investment'>
     <xsl:with-param name='investment-set' select='//investment'/>
     </xsl:call-template>
</xsl:variable>
<tr>
     <td><xsl:value-of select='@name'/></td>
     <td><xsl:value-of select="format-number($sum,'#,###,##0.00')" /></td>
</tr>
</xsl:template>
 
<xsl:template name='total-investment'>
<xsl:param name='investment-set'/>
<xsl:choose>
<xsl:when test='$investment-set'>
<xsl:variable name='first-node'>
<xsl:apply-templates select='$investment-set[1]' mode='investment-price'/>
</xsl:variable>
<xsl:variable name='other-nodes'>
<xsl:call-template name='total-investment'>
<xsl:with-param name='investment-set' select='$investment-set[position()!=1]'/>
</xsl:call-template>
</xsl:variable>
<xsl:value-of select="number($first-node) + number($other-nodes)"/>
</xsl:when>
<xsl:otherwise>0</xsl:otherwise>
</xsl:choose>
</xsl:template>                                    
                                   
 <xsl:template match='investment' mode='investment-price'>
   <xsl:value-of select='@units * @price'/>
 </xsl:template>
 
</xsl:stylesheet>

XML Output
==========
<?xml version="1.0" encoding="UTF-8"?>
<table>
<tr>
<td>Joe Bloggs</td>
<td>39,219.50</td>
</tr>
</table>
0
b1xml2Commented:
The following is a more succinct and better performing stylesheet

Recommended XSLT Document
===========================
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
<xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>  

<xsl:template match="/">
<table><xsl:apply-templates/></table>
</xsl:template>

<xsl:template match="client">
<xsl:variable name="total-list">
<xsl:for-each select="descendant::investment">
<sum><xsl:value-of select="@units * @price" /></sum>
</xsl:for-each>
</xsl:variable>
<xsl:variable name="sum" select="sum(msxsl:node-set($total-list)/node())" />
<tr>
<td><xsl:value-of select="@name"/></td>
<td><xsl:value-of select="format-number($sum,'#,###,##0.00')" /></td>
</tr>
</xsl:template>

</xsl:stylesheet>
0
b1xml2Commented:
Notes
=====
This XSLT Document allows for multiple clients and for which there is proper totalling, it allows works for singular clients, hence to make the code run properly, you change the first template:

<xsl:template match="/">
<table><xsl:apply-templates select="//client" /></table>
</xsl:template>
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
cmainAuthor Commented:
Thanks very much.
I have used a hybrid of your last suggestion as I wish to use parameters and sum at several different levels.

I am still a tad unsure of why I was getting the NaN value, although I will look at it in more detail. Your solution works perfectly, thanks.

Regards
-craig.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Web Languages and Standards

From novice to tech pro — start learning today.