Wrox Programmer Forums
Go Back   Wrox Programmer Forums > XML > XSLT
XSLT General questions and answers about XSLT. For issues strictly specific to the book XSLT 1.1 Programmers Reference, please post to that forum instead.
Welcome to the p2p.wrox.com Forums.

You are currently viewing the XSLT section of the Wrox Programmer to Programmer discussions. This is a community of software programmers and website developers including Wrox book authors and readers. New member registration was closed in 2019. New posts were shut off and the site was archived into this static format as of October 1, 2020. If you require technical support for a Wrox book please contact http://hub.wiley.com
Old August 29th, 2013, 01:12 PM
Authorized User
Join Date: Apr 2008
Posts: 70
Thanks: 17
Thanked 1 Time in 1 Post
Send a message via Yahoo to iceandrews
Default Check my work!

I wrote a function to calculate someone's age from 2 dates (defined as the xs:date data type). I've tested it locally for various dates and ranges and it seems to be working properly. I'm sure I could make it more efficient and simplify it. I played with lots of the date functions, but with leap year involved, breaking down years, months and days seemed the be the only full proof method I could come up with. Anyone seem any flaws?

<xsl:stylesheet version="2.0" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fns="http://gai.com/xmlGroup/Functions" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

	<xsl:variable name="dates">

	<xsl:template match="/">
		<xsl:value-of select="fns:getAge($dates/Today, $dates/BirthDay)"/>

	<xsl:function name="fns:getAge">
		<xsl:param name="CompareDate" as="xs:date"/>
		<xsl:param name="BirthDate" as="xs:date"/>

		<xsl:variable name="thisYear" select="number(substring(string($CompareDate),1,4))"/>
		<xsl:variable name="thisMonth" select="number(substring(string($CompareDate),6,2))"/>
		<xsl:variable name="thisDay" select="number(substring(string($CompareDate),9,2))"/>
		<xsl:variable name="birthYear" select="number(substring(string($BirthDate),1,4))"/>
		<xsl:variable name="birthMonth" select="number(substring(string($BirthDate),6,2))"/>
		<xsl:variable name="birthDay" select="number(substring(string($BirthDate),9,2))"/>

			<!-- Error when the Birth Date is in the future -->
			<xsl:when test="days-from-duration($CompareDate - $BirthDate) &lt; 0">
				<xsl:variable name="errorMsg">
					<xsl:text>Invalid birth date.  This person has not been born!  Birth Date:</xsl:text>
					<xsl:value-of select="$BirthDate"/>
					<xsl:text>, Compare Date:</xsl:text>
					<xsl:value-of select="$CompareDate"/>
				<xsl:value-of select="error((),$errorMsg)"/>
				<!-- Check Years -->
				<!-- If years are equal; 0 years old -->
					<xsl:when test="$thisYear = $birthYear">
						<xsl:value-of select="0"/>
					<!-- Check Months -->
					<!-- If current Month is after the Birth Month -->
					<xsl:when test="$thisMonth &gt; $birthMonth">
						<xsl:value-of select="$thisYear - $birthYear"/>
					<!-- If current Month is before the Birth Month; -1 year -->
					<xsl:when test="$thisMonth &lt; $birthMonth">
						<xsl:value-of select="$thisYear - $birthYear - 1"/>
					<!-- Check Days; Months must be equal -->
					<!-- If current Day is after the Birth Day -->
					<xsl:when test="$thisDay &gt; $birthDay">
						<xsl:value-of select="$thisYear - $birthYear"/>
					<!-- If current Day is before the Birth Day; -1 year -->
					<xsl:when test="$thisDay &lt; $birthDay">
						<xsl:value-of select="$thisYear - $birthYear - 1"/>
					<!-- Months and Days must be equal; Happy Birthday! -->
						<xsl:value-of select="$thisYear - $birthYear"/>

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need Help!! on Checkbox click how to check from database whether clicked check match. damandeep BOOK: Beginning PHP5, Apache, and MySQL Web Development ISBN: 978-0-7645-7966-0 1 March 14th, 2011 08:39 AM
JS to check for form Validation does not work - pl jennypretty Classic ASP Basics 4 December 11th, 2008 11:18 PM
Connect to VSS check-in Check-out Programatically rhd110 General .NET 6 August 12th, 2007 07:46 AM
Help 'Check ListView' vs 'Check ListBox' MikeY C# 1 February 24th, 2005 02:20 PM

Powered by vBulletin®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright (c) 2020 John Wiley & Sons, Inc.