Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 531
  • Last Modified:

How to sum values in nodes (XSL)

This is really starting to annoy me. I've gone through many examples, and it still won't work.. Here is a sample of my XML:

<?xml version="1.0"?>
<?xml:stylesheet type="text/xsl" href="clanx_members.xsl"?>

<root>
  <toon name="Ainwen">
    <level>43</level>
     <race>Wood Elf</race>
     <class>Druid</class>
     <status>Primary</status>
     <contact>Mail Ainwen</contact>
     
     <alt_toon name="Kolien">
       <level>19</level>
       <race>Wood Elf</race>
       <class>Ranger</class>
       <status>Alternate</status>
       <contact>Mail Kolien</contact>
     </alt_toon>    
  </toon>
</root>

What I want to do is sum all <level> nodes. Here is a sample of the xsl that i'm using:

<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

  <xsl:template match="/">
    <HTML>
      <BODY>
         <xsl:value-of select="sum(level)"/>
       </BODY>
     </HTML>
  </xsl:template>
</xsl:stylesheet>

I've tried just about every incarnation of sum(level) as I could think of and still i get the following error when i try to load up my xml page:

The XML page cannot be displayed
Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later.


--------------------------------------------------------------------------------

NodeTest expected here. -->sum(<--level)
 


If anyone can tell me what I'm doing wrong i'd soooo appreciate it!!

Mike
0
Dhag
Asked:
Dhag
  • 4
  • 3
1 Solution
 
BigRatCommented:
It is very simple. The sum() function takes as its parameter a node-list.

You have specified the name "level" which is to identify this list. The context of the call however is "underneath the root element" since the xsl:template statement has match="/". There is no level element directly underneath the root.

An XPath expression "//level" would search your XML and extract ALL (yes, every single one) level elements and feed them into sum(). If that is what you want to do - voila!
0
 
BigRatCommented:
Here is the extract from the Microsoft documentation for your futuree reference :-

sum Function
Returns the sum of all nodes in the node set. Each node is first converted to a number value before summing.

number sum(node-set)
Remarks
Given the following XML document:

<root>
  <a>1</a>
  <a>3</a>
  <a>2</a>
</root>
The following function call returns 6.

sum(//a)

See Also XML Data Types Reference
0
 
DhagAuthor Commented:
Unfortunately I tried //level as well. Knowing this you may understand more why i'm so frustrated.

Any other ideas?

Mike
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
BigRatCommented:
Nope, and I'm at home now. But tomorrow morning I'll try it at work. I do have a stylesheet at work which does something like this. Which parser/transformer do you use? I used MSXML3 in IE 5.5.
0
 
DhagAuthor Commented:
I have both MSXML2 and 3 on my machine, and I am using IE 5.5 with pretty much all current updates.

Thanks a million for your efforts :)

Mike
0
 
edmund_mitchellCommented:
Hello Dhag

When you use:
<xsl:value-of select="sum(//level)"/>
it doesn't work?
I just ran it, and it works fine.
If it's not working for you, I'm betting the problem is that you don't have MSXML3 installed in replace mode, it's in side-by-side mode, and so it's not forcing the transform for you.
Go to:
http://www.netcrucible.com/xslt/msxml-faq.htm
and follow the instructions to be sure that you've got MSXML3 in replace mode, and then go again, and I think it'll work just fine.

Edmund
0
 
BigRatCommented:
Edmund is probably right. I have just copied and tested YOUR XML and XSL and it works fine!
0
 
DhagAuthor Commented:
That was exactly the problem. I thank you profusely my friend!

This is one of those things that really annoys me with Microsoft though. I mean, BOTH dlls were registered, so why wouldn't the function (or something) know to use the correct dll?

Oh well.. no harm done, except some lost time and a bit of frustration.

Again, thank you muchly, and enjoy the 200 points :)

Mike
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

  • 4
  • 3
Tackle projects and never again get stuck behind a technical roadblock.
Join Now