This has never been implemented, mostly because it's a pretty bogus notion,
and I never understood why the XSLT working group did this. "case" is an
extremely complex notion in Unicode, and having upper-first/lower-first is
an extremely Euro-centric view of characters and collation.
You could certainly implement this yourself, by modifying the code in
NodeSorter::NodeSortKeyCompare::compare(). The Java processor has some
code that does this:
//Process caseOrder parameter
if (k.m_caseOrderUpper)
{
String tempN1 = n1String.getSourceString().toLowerCase();
String tempN2 = n2String.getSourceString().toLowerCase();
if (tempN1.equals(tempN2))
{
//java defaults to upper case is greater.
result = result == 0 ? 0 : -result;
}
}
You can see it uses String.toLowerCase(), which is implemented in the ICU
using the class LowercaseTransliterator. I'd like to integrate such a
function into Xalan at some point, but it's not really a high priority.
Dave
"Avula, Raj"
<RAvula@firstam. To: "'[EMAIL PROTECTED]'"
<[EMAIL PROTECTED]>
com> cc: (bcc: David N
Bertoni/Cambridge/IBM)
Subject: XalanC Sort Case-Order.
03/19/2002 11:19
AM
Please respond
to xalan-dev
Hi,
I am trying to use xsl:sort with xalanC1.3.
I had built ICU2.0 and re-built xalan with ICU.
I have started tying out some of the sorting functionality.
And I found that case-order={upper-first|lower-first} attribute
is not working properly. Do I need to do anything to make this work
or is it a known problem?
If I try with xalan1.2 <xsl:sort order={ascending|descing} is also not
working properly.
Please let me know.
Here is sample xml:
<?xml version="1.0" encoding="UTF-8"?>
<AAA>
<BBB>cc </BBB>
<BBB>ff </BBB>
<BBB>aa </BBB>
<BBB>fff </BBB>
<BBB>FFF </BBB>
<BBB>Aa </BBB>
<BBB>ccCCC </BBB>
</AAA>
Sample XSL:
<xsl:stylesheet xmlns:xsl = "http://www.w3.org/1999/XSL/Transform";
version = "1.0" >
<xsl:output method = "text" />
<xsl:template match = "/AAA" >
<xsl:text >Ascending: </xsl:text>
<xsl:apply-templates select = "BBB" >
<xsl:sort
case-order="upper-first" data-type="text" />
</xsl:apply-templates>
</xsl:template>
<xsl:template match = "BBB" >
<xsl:value-of select = "." />
<xsl:text > </xsl:text>
</xsl:template>
</xsl:stylesheet>
And output I am getting is:
aa Aa cc ccCCC ff fff FFF
Thank you
Raj..
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