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RE: Date Difference
Tom,
The cheap easy way to do it doesn't involve the "dateness" of your
dates; it merely involves rearranging your dates into a form in which
they can be meaningfully compared with each other.
If you can write the code that will create, from each of these,
12/20/2005 => 20051220
1/1/2006 => 20060101
3/15/1995 => 19950315
you see it becomes merely a numeric comparison.
Whether you can do this with the substring() function depends on
whether your values include zeroes. (That is, no 1/1/2006 since
200611 isn't useful.) Operations using substring-before() and
substring-after(), taking the '/' as the delimiting substring -- or
the saxon or XPath 2.0 tokenize() function -- would be more dependable.
If you want your dates to have "dateness", XPath 2.0 is the way to
go, and Mike H has shown the way forward. But your format is wrong
for that conversion too.
Cheers,
Wendell
At 04:56 PM 12/19/2005, you wrote:
I wrote this:
<xsl:function name="sgfr:IsDateGreater">
<xsl:param name="stringDate1"/>
<xsl:param name="stringDate2"/>
<xsl:variable name="tokenizedDate1"
select="tokenize($stringDate1, '/')"/>
<xsl:variable name="monthPart1"
select="subsequence(($tokenizedDate1), 1, 1)"/>
<xsl:variable name="datePart1"
select="subsequence(($tokenizedDate1), 2, 1)"/>
<xsl:variable name="yearPart1"
select="subsequence(($tokenizedDate1), 3, 1)"/>
<xsl:variable name="tokenizedDate2"
select="tokenize($stringDate2, '/')"/>
<xsl:variable name="monthPart2"
select="subsequence(($tokenizedDate2), 1, 1)"/>
<xsl:variable name="datePart2"
select="subsequence(($tokenizedDate2), 2, 1)"/>
<xsl:variable name="yearPart2"
select="subsequence(($tokenizedDate2), 3, 1)"/>
<xsl:choose>
<xsl:when test="yearPart1>yearPart2"><xsl:value-of
select="true"/></xsl:when>
<xsl:when test="yearPart1=yearPart2">
<xsl:choose>
<xsl:when test="monthPart1>monthPart2">
<xsl:value-of select="true"/>
</xsl:when>
<xsl:when test="monthPart1=monthPart2">
<xsl:choose>
<xsl:when
test="datePart1>datePart2"><xsl:value-of select="true"/></xsl:when>
<xsl:otherwise><xsl:value-of
select="false"/></xsl:otherwise>
</xsl:choose>
</xsl:when>
<xsl:otherwise><xsl:value-of
select="false"/></xsl:otherwise>
</xsl:choose>
</xsl:when>
<xsl:otherwise><xsl:value-of
select="false"/></xsl:otherwise>
</xsl:choose>
</xsl:function>
Will this work?
Or am I totally missing the point?
Regards,
Tom Maciejewski
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Wendell Piez mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc. http://www.mulberrytech.com
17 West Jefferson Street Direct Phone: 301/315-9635
Suite 207 Phone: 301/315-9631
Rockville, MD 20850 Fax: 301/315-8285
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Mulberry Technologies: A Consultancy Specializing in SGML and XML
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