Re: [xsl] flat XML to normal XML

Subject: Re: [xsl] flat XML to normal XML
From: omprakash.v@xxxxxxxxxxxxx
Date: Mon, 16 May 2005 19:36:56 +0530
Hi,
     With just the first node commented thus not providing support for
handling the transport tag, the following stylesheet produces the output
you want.
Iam sure this can be extended to handle the transpot tags.

Cheers,
Omprakash.V

XSLT:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>

 <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>


 <xsl:template match="/">
  <NewNodeSet>
   <xsl:apply-templates select="/DataSet/Table[1]">
      <xsl:with-param name="level" select="/DataSet/Table/Level"/>
      </xsl:apply-templates>

  </NewNodeSet>
 </xsl:template>

<xsl:template match="Table">
<xsl:param name="level"/>


<Brand name="{Description}">
      <xsl:apply-templates select="following::Table[1]" mode="model">
      <xsl:with-param name="level" select="$level"/>
      </xsl:apply-templates>
</Brand>

      <xsl:apply-templates select="following::Table[Level =
number($level)]">
      <xsl:with-param name="level" select="$level"/>
      </xsl:apply-templates>

</xsl:template>

<xsl:template match="Table" mode="model">
<xsl:param name="level"/>


<xsl:if test="not(Level = number($level))">

<Model>
      <xsl:value-of select="Description"/>
</Model>
      <xsl:apply-templates select="following::Table[1]" mode="model">
      <xsl:with-param name="level" select="$level"/>
      </xsl:apply-templates>
</xsl:if>

</xsl:template>



</xsl:stylesheet>

XML File:

<?xml version="1.0" encoding="UTF-8"?>
<DataSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>

<!--
      <Table>
        <Level>1</Level>
        <Description>Cars</Description>
    </Table>
-->
    <Table>
        <Level>2</Level>
        <Description>BMW</Description>
    </Table>

      <Table>
        <Level>3</Level>
        <Description>316</Description>
    </Table>
    <Table>
        <Level>3</Level>
        <Description>Z4</Description>
    </Table>
    <Table>
        <Level>2</Level>
        <Description>Citroen</Description>
    </Table>

      <Table>
        <Level>3</Level>
        <Description>C2</Description>
    </Table>
    <Table>
        <Level>3</Level>
        <Description>C4 coupe</Description>
    </Table>
    <Table>
        <Level>2</Level>
        <Description>Alfa Romeo</Description>
    </Table>
    <Table>
        <Level>3</Level>
        <Description>156</Description>
    </Table>


    <Table>
        <Level>1</Level>
        <Description>Motorcycles</Description>
    </Table>

    ...
    ...
</DataSet>


Output:

<?xml version="1.0" encoding="UTF-8"?>
<NewNodeSet>
<Brand name="BMW">
<Model>316</Model>
<Model>Z4</Model>
</Brand>
<Brand name="Citroen">
<Model>C2</Model>
<Model>C4 coupe</Model>
</Brand>
<Brand name="Alfa Romeo">
<Model>156</Model>
<Model>Motorcycles</Model>
</Brand>
<Brand name="Alfa Romeo">
<Model>156</Model>
<Model>Motorcycles</Model>
</Brand>
</NewNodeSet>







                      Borut Bolhina
                      <bob@xxxxxxxx>           To:
xsl-list@xxxxxxxxxxxxxxxxxxxxxx
                                               cc:      (bcc:
omprakash.v/Polaris)
                      05/16/2005 03:54         Subject: [xsl] flat XML to
normal XML
                      PM
                      Please respond
                      to xsl-list






Hello list,

I wish to transform an xml which has level information in each item
(Table) to xml which has hierarchy as stated in those item's element.

<DataSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
    <Table>
        <Level>1</Level>
        <Description>Cars</Description>
    </Table>
    <Table>
        <Level>2</Level>
        <Description>BMW</Description>
    </Table>
    <Table>
        <Level>3</Level>
        <Description>316</Description>
    </Table>
    <Table>
        <Level>3</Level>
        <Description>Z4</Description>
    </Table>
    <Table>
        <Level>2</Level>
        <Description>Citroen</Description>
    </Table>
    <Table>
        <Level>3</Level>
        <Description>C2</Description>
    </Table>
    <Table>
        <Level>3</Level>
        <Description>C4 coupe</Description>
    </Table>
    <Table>
        <Level>2</Level>
        <Description>Alfa Romeo</Description>
    </Table>
    <Table>
        <Level>3</Level>
        <Description>156</Description>
    </Table>
    <Table>
        <Level>1</Level>
        <Description>Motorcycles</Description>
    </Table>
    ...
    ...
</DataSet>


Target xml should look something like this:

<NewDataSet>
    <Transport name="Cars">
       <Brand name="BMW">
          <Model>316</Model>
          <Model>Z4</Model>
       </Brand>
       <Brand name="Citroen">
          <Model>C2</Model>
          <Model>C4 coupe</Model>
       </Brand>
       <Brand name="Alfa Romeo">
          <Model>156</Model>
       </Brand>
    </Transport>
    <Transport name="Motorcycle">
       ...
    </Transport>
</NewDataSet>


So, based on the Level element in the source xml for each Table entry,
an appropriate subtree must be constructed and inserted in target xml.
Levels are ordered following this pattern:
1,2,3,3,...,3,2,3,...,3,...,1,2,3,3,...,2,3,...,3

Busting my head over this for two days now, help appreciated. If only I
could find the guy who created this "flat" xml...$%##@@!

--Bob





This e-Mail may contain proprietary and confidential information and is sent
for the intended recipient(s) only.
If by an addressing or transmission error this mail has been misdirected to
you, you are requested to delete this mail immediately.
You are also hereby notified that any use, any form of reproduction,
dissemination, copying, disclosure, modification,
distribution and/or publication of this e-mail message, contents or its
attachment other than by its intended recipient/s is strictly prohibited.

Visit Us at http://www.polaris.co.in

Current Thread