Chris Hughes wrote:
Hi
I tried asking for help a while back on this, anyway now I have worked out
exactly where my issue is and will provide examples below.
Assume this data....
<?xml version="1.0" encoding="utf-8"?>
<ORCB082>
<ROWSET>
<ROW num="1">
<Fixture>
<FixtureDate>2008-10-17</FixtureDate>
<FixtureDayText>DAY ONE TEST</FixtureDayText>
<Race>
<RaceType>S</RaceType>
</Race>
<Race>
<RaceType>H</RaceType>
</Race>
</Fixture>
</ROW>
</ROWSET>
</ORCB082>
Stylesheet 1
------------
This stylesheet outputs "DAY ONE TEST" message, IMO it should match no
records and not output anything.
<?xml version="1.0"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xsl:output method="text" indent="yes"/>
<xsl:template match="/">
<xsl:for-each select="/ORCB082/ROWSET/ROW/Fixture[FixtureDate >=
'2008-01-01' and FixtureDate <= '2010-01-01' and
Race/RaceType >= 'R'
and Race/RaceType <= 'R']" >
<xsl:message><xsl:value-of select="FixtureDayText"/></xsl:message>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
Stylesheet 2
------------
This stylesheet outputs nothing - which is what I would expect, but
essentially is stylesheet 1 not performing the same logic as 2?
<?xml version="1.0"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xsl:output method="text" indent="yes"/>
<xsl:template match="/">
<xsl:for-each select="/ORCB082/ROWSET/ROW/Fixture[FixtureDate >=
'2008-01-01' and FixtureDate <= '2010-01-01' and
Race/RaceType = 'R']" >
<xsl:message><xsl:value-of select="FixtureDayText"/></xsl:message>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
Conclusion
-----------
Like so many of us working in the XML / XSLT world I find it difficult to
adjust to a different way of working. Essentially had I wrote this logic in
SQL or 4GL or VB etc etc I'd be sure that it would work. I hope nobody is
offended by me suggesting this may be a bug!
Thanks in advance.
Chris
In your first solution, Race/Racetype is a set of two values, 'S', and
'H'. The tricky bit is in how your tests apply to sets.
When the right hand side is a set, the tests "'R' <= ...." and "'R' >=
...." both return true if 'R' is <= _any_ element of the set or >= _any_
element of the set.
The first test matches 'S' and the second test matches 'H'
# r
--
Ronan Klyne
Business Collaborator Developer
Tel: +44 01189 028518
ronan(_dot_)klyne(_at_)groupbc(_dot_)com
www.groupbc.com
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