topic Re: Day light savings issue in Alfresco Archive

Day light savings issue

sharat — Mon, 04 Nov 2013 22:07:16 GMT

Hello Support,we have the issue with the daylight savings when Business process is scheduled to run.For e.g : our server is setup in the UTC time and we have scheduled a business process to run at 9:25 EST (UTC -4 )(0 25 13 ? * MON,TUE,WED,THU,FRI *) and after the the day light savings the business

Re: Day light savings issue

sharat — Tue, 05 Nov 2013 01:57:11 GMT

Sorry ** that is 9:25 EDT (Eastern Daylight savings New York/USA)

Re: Day light savings issue

trademak — Tue, 05 Nov 2013 12:20:29 GMT

Good point, can you create a JIRA for this? I don't think we have a good solution for this yet.

Best regards,

Re: Day light savings issue

sharat — Tue, 05 Nov 2013 15:51:18 GMT

Thanks Tijs for the quick response.
link for the jira bug : http://jira.codehaus.org/browse/ACT-1836

Earliest response is greatly appreciated.

Re: Day light savings issue

mseiden — Thu, 07 Nov 2013 17:58:18 GMT

Hi Tijs,

I'm working with Sharat on resolving this issue and here is what I am thinking of doing.

First I'll subclass CycleBusinessCalendar and override resolveDuedate. The new resolveDuedate will look for a timezone string at the end of the cron or iso string. This string will be a java timezone ID: http://docs.oracle.com/javase/7/docs/api/java/util/TimeZone.html

R/2013-10-01T20:30:00/P1D DSTZONE:US/Eastern

0 30 20 ? * MON,TUE,WED,THU,FRI * START:2013-10-01T20:30:00 DSTZONE:US/Eastern

Now we have the start date for each in server time (UTC) and we have the timezone which will be used to calculate daylight savings. We pass the standard cron/iso string to super.resolveDuedate then adjust the time according to start and zone. Any string which does not contain these values will be calculated in the old way to maintain backwards compatibility.

Next I'll populate my own MapBusinessCalendarManager with a standard DurationBusinessCalendar and DueDateBusinessCalendar along with the new CycleBusinessCalendar subclass. This calendar manager will be used in the configuration of the process engine.

Of course I would prefer an official solution as this will break compatibility with standard Activiti. Any input would be greatly appreciated.

-Mark

Re: Day light savings issue

trademak — Wed, 13 Nov 2013 09:11:18 GMT

Hi Mark,

That looks like a decent solution to be included in Activiti. Could you create a pull request for this?
So changing the CycleBusinessCalendar class to support timezones.

Best regards,

Re: Day light savings issue

mseiden — Thu, 13 Mar 2014 14:16:01 GMT

Pull request submitted:

https://github.com/Activiti/Activiti/pull/231/files

Re: Day light savings issue

aseem — Thu, 30 Oct 2014 16:29:27 GMT

Is there a plan to include this in the next release?

Re: Day light savings issue

aseem — Thu, 30 Oct 2014 17:32:45 GMT

Sorry, I just realized that it was a part of 5.15 release, although the JIRA still says its Unresolved, so got confused.