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Re: [xsl] Select item from schedule based on date in XPath 1.0


Subject: Re: [xsl] Select item from schedule based on date in XPath 1.0
From: "Philipp Kursawe phil.kursawe@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 31 Jul 2014 18:19:50 -0000

Thanks Dimitre, that works! Nice trick with the "last()"


On Wed, Jul 30, 2014 at 6:12 PM, Dimitre Novatchev dnovatchev@xxxxxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> On Wed, Jul 30, 2014 at 7:00 AM, Philipp Kursawe
> phil.kursawe@xxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
> wrote:
> > I am using XPath 1.0 so for the date comparison itself I use this trick:
> > number(translate(@startTime, "-T:.Z", ""))
> > to get a number representation for the startTime attibute.
>
>
>
> Simply removing the non-digit characters will not, in general, be
> correct, especially in the case when the timezone values are
> different.
>
> If you can completely ignore the timezones, this XPath expression:
>
>      /*/*[translate(substring-before(substring-after(@startTime, 'T'),
> '.'), ':', '')
>         &lt;
>           100*translate($vMyTime, ':', '')
>           ]
>            [last()]
>
> selects the item element with the wanted value of the startTime attribute.
>
> To prove this, one can run a transformation as the following:
>
> <xsl:stylesheet version="1.0" xmlns:xsl="
> http://www.w3.org/1999/XSL/Transform">
>  <xsl:output omit-xml-declaration="yes" indent="yes"/>
>
>  <xsl:variable name="vMyTime" select="'11:15'"/>
>  <xsl:template match="/">
>    <xsl:copy-of select="
>      /*/*[translate(substring-before(substring-after(@startTime, 'T'),
> '.'), ':', '')
>         &lt;
>           100*translate($vMyTime, ':', '')
>           ]
>            [last()]
>      "/>
>  </xsl:template>
> </xsl:stylesheet>
>
>
> When this transformation is applied on the provided XML document
> (corrected to be wellformed):
>
> <daily>
>  <item startTime="2014-07-26T10:00:00.000Z"/>
>  <item startTime="2014-07-26T11:00:00.000Z"/>
>  <item startTime="2014-07-26T12:00:00.000Z"/>
>  <item startTime="2014-07-26T13:00:00.000Z"/>
> </daily>
>
> the wanted result is produced:
>
> <item startTime="2014-07-26T11:00:00.000Z" />
>
>
> --
> Cheers,
> Dimitre Novatchev
> ---------------------------------------
> Truly great madness cannot be achieved without significant intelligence.
> ---------------------------------------
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> -------------------------------------
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> -------------------------------------
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> ------------------------------------
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> -------------------------------------
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> -------------------------------------
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