topic Re: Freemarker date arithmetic in Alfresco Archive

Freemarker date arithmetic

rhofkens — Tue, 13 Mar 2007 18:15:34 GMT

Hello,I'm building a Freemarker Template that shows a grouped view of the documents in a space:- all docs changed today- all docs changed yesterday- all docs changed last week- all docs changed last monthThis would be easy enough to do using lucene queries with varying [date1] TO [date2] parts in t

Re: Freemarker date arithmetic

kevinr — Thu, 15 Mar 2007 12:34:43 GMT

We have provided some custom methods to work on dates in FreeMarker - such as date compare and date increment:


 * Usage: 
 *    dateCompare(dateA, dateB) - returns 1 if dateA if greater than dateB
 *    dateCompare(dateA, dateB, millis) - returns 1 if dateA is greater than dateB by at least millis, else 0 
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(from the javadoc)


incrementDate(date, increment) - returns new date incremented by 'increment' milliseconds
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Hope this helps,

Kevin

Re: Freemarker date arithmetic

rhofkens — Thu, 15 Mar 2007 13:37:09 GMT

Hi Kevin,

great, the incrementDate function looks like the one I need. I'll try out if this also works with a negative increment (effectively creating a decrementDate function). If not, I'll implement decrementDate myself based on your code.

Cheers,
Roeland.

Re: Freemarker date arithmetic

kevinr — Thu, 15 Mar 2007 14:12:03 GMT

The code looks like it simply converts the date to a long value, adds the increment long number value to the date (which can be a negative) and converts the resulting long back to a Date so it should work ok.

Thanks,

Kevin