Need help to solve problem

PankajMishra · April 14th, 2007, 04:42 AM

I am new to xslt and i have to find the solution of the following problem
I want to use the value of tag that is coming in last among many number of same tag.
for example
<abc>
    <xyz>Hello</xyz>
    <pqr>xxx</pqr>
    <xyz>How</xyz>
    <lmn>yyy</lmn>
    <xyz>you</xyz>
    <pqr>zzz</pqr>
    <lmn>yyy</lmn>
</abc>
I want to store the value of last xyz tag (which value is you) into a variable in xslt.What will we the code for this in xslt.The position of tags are not fix.
Thanks in Advance

pankaj

mhkay · April 14th, 2007, 05:53 PM

<xsl:variable name="last-xyz" select="string(xyz[last()])"/>

(When you say "the value of the xyz tag", I assume you mean the value of the xyz *element*. Elements have two tags, a start tag and and end tag, and if the "value of a tag" means anything, then the value is "xyz".)

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

PankajMishra · April 16th, 2007, 01:05 AM

Hi mhkay

Thanks a lot.My problem has solved.

pankaj

PankajMishra · April 18th, 2007, 02:20 AM

Hi mhkay
Actually my proble has not solved.
The code suggested by you is not working fine according to my new requirement.The requirement is as : -
<abc>
    <xyz>Hello</xyz>
    <xyz>mhkay</xyz>
    <pqr>xxx</pqr>
    <xyz>How</xyz>
    <lmn>yyy</lmn>
    <xyz>you</xyz>
    <pqr>zzz</pqr>
    <lmn>yyy</lmn>
</abc>
Code suggested by u is giving result as 'mhkay' where as i want result as 'you'.Could u tell how to get it.
Thanks in Advance

pankaj

mhkay · April 18th, 2007, 06:25 AM

Please show a complete (but small) example that demonstrates your problem so I can see what you are doing wrong.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

PankajMishra · April 19th, 2007, 07:27 AM

I got the solution of this problem by using following lines of code

<xsl:variable name="last-xyz">
     <xsl:for-each select="//xyz">
          <xsl:if test="position()=last()">
                <xsl:value-of select="."/>
          </xsl:if>
      </xsl:for-each>
</xsl:variable>

pankaj

joefawcett · April 19th, 2007, 07:43 AM

I fail to see how Michael's solution cannot work, I ran this stylesheet against your example and got the expected answer:

Code:

<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template match="/abc">
    <xsl:variable name="xyz-last" select="string(xyz[last()])"/>
    <example>
      <xsl:value-of select="$xyz-last"/>
    </example>
  </xsl:template>
</xsl:stylesheet>

--

Joe (Microsoft MVP - XML)

mhkay · April 19th, 2007, 08:27 AM

Your 9 lines of code are equivalent to

<xsl:variable name="last-xyz" select="string((//xyz)[last()])"/>

The only difference from my previous solution is the use of "//"; presumably when you tried my solution it didn't work because you were starting from the wrong context node.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference