Anton Schoultz - ePOS antons at epos.co.za
Wed Nov 3 11:43:50 GMT 1999

Hi all,
Yet another idiot question..
I have found lots of info on XML, and lots on XSL, but very little on
combining them!

Hypothetical case; let's say that I have a servlet (eg Java) runing which
accepts an HTTP POST/GET to query a product catalogue. The servlet queries a
database and then generates an XML document such as this..

<?xml version="1.0"?>
<!DOCTYPE ProdList SYSTEM "http://www.acme.com/dtd/ProdList.dtd">
 <hdr date="19991201">
  <title>Catalogue as of 1st December</title>
 <prod code="101" short="keyboard" price="50.00">Qwerky keyboard</prod>
 <prod code="MS1" short="Mouse" price="5.00">Mickey Mouse</prod>
 <prod code="CRT2" short="Monitor" price="100.00">Monitor Lizard</prod>

Let's say we have a DTD available on the web server
which looks like this..

<!ELEMENT ProdList ( hdr, prod* ) >
  <!-- header specifies effective date -->
  <!ELEMENT hdr ( title? ) >
  <!ATTLIST hdr
  <!ELEMENT title (#PCDATA)* >
  <!-- each product has a code, short-descripiton and a price. -->
  <!-- the data holds full description -->
  <!ELEMENT prod (#PCDATA)* >
  <!ATTLIST prod
    short CDATA #IMPLIED
    price CDATA #IMPLIED

Let's say that a style sheet is also available on www.acme... to ouput the
catalogue as an HTML table, looks like this ... (which probably has lots of

<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org.TR/WD-xsl">
  <xsl:template match="/">
         <xsl:for-each select="hdr">
           <xsl:value-of select="."/>
      <BODY BGCOLOR="#808080">
        <H1>Product List</H1>
        <TABLE BORDER="1" WIDTH="400">
            <TH>Stock Code</TH>
            <TH>Short Description</TH>
            <TH>Long Description</TH>
            <TH>Unit Price</TH>
          <xsl:for-each select="ProdList/prod">
              <TD> <xsl:value-of select="@code"/>  </TD>
              <TD> <xsl:value-of select="@short"/> </TD>
              <TD> <xsl:value-of select="."/>      </TD>
              <TD> <xsl:value-of select="@price"/> </TD>

How should the servlet change it's ouput (text/xml?) so that the browser (eg
IE5) will pick-up the XSL and format the xml output into the desired HTML
table ?
What changes are required to the above files ?


Anton Schoultz
e-mail: mailto:antons at ePOS.co.za
Office: +27 11 807-9400 Ext. 205

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