[xsl] Re: I'm very new to the XML/XSL world ...

[owner-xsl-list at lists dot mulberrytech dot com (by way of B. Tommie Usdin)]

Date: Tue, 17 Apr 2001 06:34:44 -0700 (PDT)
From: Dan Diebolt <dandiebolt@yahoo.com>
Subject: Re: I'm very new to the XML/XSL world ...
To: xsl-list@lists.mulberrytech.com
In-Reply-To: <200104170630.CAA09488@biglist.com>
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>I'm very new to the XML/XSL world. 

Who isn't?

>I want to use XSL in a similar fashion to a database query.

You need XQuery for that, but XSLT/XPath can do the job.

Try the enclosed. You may need to use the function normalize-space()
to deal with the white space within you elements " A Person ". I
just ignored it to concentrate on the XPath issues. In understanding
the XPath you simply need to know that the text outside of the []'s
steers you to the node you are selecting, while the text within the
[]' qualifies what nodes are selected:

You can obtain the sec_head for a given $title as a two step process.

First, select the sec_ref attribute of graph elements where the 
graph element a has title element wich content equal to $title:

   select="//graph[title=$title]/@sec_ref"/>

Second select the sec_head element within a section element with an id 
attribute equal to $sec_ref:

   select="//section[@id=$sec_ref]/sec_head"/>
 
Hope this helps.

Regards,

Dan
File: IDProblem17April2001.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="IDProblem17April2001.xsl"?>
<graph_catalogue>
 <graph sec_ref="EAF"  >
  <title>Graph</title>
 </graph>

 <section id="EAF" >
  <sec_head>Person</sec_head>
 </section>
</graph_catalogue>

File: IDProblem17April2001.xsl
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
  
 <xsl:variable name="title" select="'Graph'"/>
 <xsl:template match="/">
  <xsl:variable name="sec_ref" select="//graph[title=$title]/@sec_ref"/>
  <xsl:value-of select="//section[@id=$sec_ref]/sec_head"/>
 </xsl:template>
</xsl:stylesheet>


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