Combining values in xslt

[ceviz]

Hi there,
I am pretty new to XML and XSLT concepts. I am working on a project which uses a XML file to retrieve values and display them. The concept of XML file is like,

<root>
    <customer>    <id></id>
    <name></name>
    <number></number>
    <day></day>
    <month></month>
    <year></year>    </customer>
</root>
<!-- Editor’s note: the <customer> tags don’t make sense this way,
but I left the code as it is  -->
<!-- Ceviz: corrected the mistypnig -->
 

Now, as you see i have seperated the date variables as day, month and year. Because, i have asked to prepare 3 pages like
1.customers who visited today.
2.customers who visited this week.
3.customer who visited within this year.

my instincts says i need to get the date of this day and compare with dd.mm.yy and if it checks i have to display the values etc..:)
so, is there any way to achive it? If yes, then how?

Thanks in advance

[jkmyoung]

Day, month, year comparison in xslt are always horrible. If you can, I would pass in 2 sets of parameters to the xslt.
1. Today's date.
2. Date from 6 days ago

You can easily get last year's date from today's date. The reason I suggest 2 seperately, is because of the possible month/year regrouping.

Comparing dates: start <=? date
(date.year > start.year) ||
(date.year == start.year && date.month > start.month) ||
(date.year == start.year && date.month == start.month && date.day >= start.day)

So, it's a really ugly expression.