xsl:apply-templates usage

bsridharg · April 15th, 2010, 12:36 AM

Hi,

I am new to XSLT and I have requirement where in I have to copy the values of one variable to another. One variable has the source xml and other variable has the xml in which the values of the first xml should be placed. Can anybody help me in coding this?

Below are the complete details:

first variable with sourcedata
<xsl:variable name="datasource">
<Author>
<name>authorname</name>
<place>authorplace</place>
<book>bookname</book>
<author>
</xsl:variable>

second xml with template that needs to be filled in with first xml
<variable name="template">
<Authordetails>
<author/>
<place/>
<book name=""/> //here the value should go in attribute
</authordetails>
</variable>

The output should look something like this:

<Authordetails>
<author>authorname</author>
<place>authorplace</place>
<book name="bookname"/>
</Authordetails

Is it possible to achieve this with <xsl:apply-templates> or something similar?
It would be great help if I can get some approach to resolve this.

Thanks,
irs

mrame · April 15th, 2010, 01:36 AM

Try the below stylesheet:

Code:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
  version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:exsl="http://exslt.org/common"
                extension-element-prefixes="exsl">
 
<xsl:output method="xml" indent="yes"/>
 
<xsl:template match="/">
 
<xsl:variable name="datasource">
<author>
<name>authorname</name>
<place>authorplace</place>
<book>bookname</book>
</author>
</xsl:variable>
 
<xsl:variable name="template">
<authordetails>
<author><xsl:value-of select="exsl:node-set($datasource)/author/name"/></author>
<place><xsl:value-of select="exsl:node-set($datasource)/author/place"/></place>
<book name="{exsl:node-set($datasource)/author/book}"/>
</authordetails>
</xsl:variable>
 
<xsl:copy-of select="$template"/>
 
</xsl:template>

mhkay · April 15th, 2010, 03:00 AM

I think I might tackle this by first transforming your second XML document to create a stylesheet, and then running this stylesheet with the first XML document as input. So you task becomes one of transforming

Code:

<variable name="template">
<Authordetails>
<author/>
<place/>
<book name=""/> //here the value should go in attribute
</authordetails>
</variable>

to something like

Code:

<xsl:template match="/"
  <Authordetails>
    <author><xsl:value-of select="author/name"/></author>
    <place><xsl:value-of select="author/name"/></place>
    <book name="{author/book}"/> 
  </Authordetails>
</xsl:template>

What isn't clear to me is how you know the intended mapping, for example how do you know that <author> in the output should contain the value tagged as <name> in the input?

bsridharg · April 15th, 2010, 05:54 AM

Thank u for the suggestions. I think I missed some information in posting. The second XML is just a variable and I cannot edit it. during run time I have to map the fields of XMl2 with xml1. but I will be constructing the variable1 elements in the same order and naming convention as XML2. is it possible to map them during run time. Please suggest.

mrame · April 15th, 2010, 06:18 AM

Did you try with the solution I gave.

mhkay · April 15th, 2010, 06:19 AM

Well, I've told you how I would do it: I would transform the second XML to produce a stylesheet, and then execute the stylesheet. If you want to do it a different way, that's up to you.

bsridharg · April 16th, 2010, 03:20 PM

Thank you got the solution..!!