Re: [xsl] Adding duration to date

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Subject: Re: Adding duration to date
From: Abel Braaksma <abel.online@xxxxxxxxx>
Date: Tue, 24 Jul 2007 19:03:14 +0200

tom tom wrote:

I wish to add a duration to a date, something along the lines of:

<xsl:value-of select="current-date() + xdt:yearMonthDuration('P6D')"/>.

I am using saxon 8.x, what is the correct way to do this, what should my namespace declarations be to make this work and does the way I do this depend on which version of Saxon / another processor I am using?

You are on the right track. Make sure you spell the yearMonthDuration correctly (there are no days in a yearMonthDuration constructor) and do not use the xdt namespace anymore (http://www.w3.org/2004/10/xpath-datatypes), because it has been superseded by the namespace of XMLSchema (http://www.w3.org/2001/XMLSchema). Commonly the 'xs' prefix is used, like with XML Schema datatypes. The rest is simple: just use normal arithmetic and you are done:

<xsl:sequence select="current-date() + xs:yearMonthDuration('P2Y1M')" as="xs:date" />

will add two years and one month to today.

Cheers,
-- Abel Braaksma

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