resolving query expressions

Hy,

does somebody know how or has docs or references to tutorials, how to
resolve boolean expressions of the following pattern
with XSLT. I am writing an XML wrapper in java and want to automatically map
a query e.g.:

((author='Knuth' OR title='Algorithms') AND releaseDate >= 1999) or another
one
((title='Windows XP' AND doctype='manual') OR (doctype='manpage' ANDNOT
title='Linux' ))

to an XSLT stylesheet.

My idea was this:

<?xml version="1.0"?>
<xsl:transform version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml"/>

  <!-- identity copy //-->
  <xsl:template match="node() | @*">
    <xsl:copy>
      <xsl:apply-templates select="node() | @*"/>
 </xsl:copy>
  </xsl:template>


  <xsl:template match="articles">
  <xsl:copy>
    <!-- resolve AND terms with xsl:if around OR terms //-->
    <xsl:if test="ancestor::volume >= 13">

   <!--  resolve OR terms by seperate xsl:copy-of  //-->
      <xsl:copy-of select="article[authors/author='C. J. Date']"/>
      <xsl:copy-of select="article[contains(title, 'Relational Algebra')]"/>

 </xsl:if>
  </xsl:copy>
  </xsl:template>

</xsl:transform>

but it is not general enough. Can anybody help a poor student ;-).


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 ROBERT SÖSEMANN  (robert.soesemann@xxxxxx)

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