Calendar shows task always in user-timezone

Question

Hi,
First a short introduction in my problem:
I've implemented a calendar which should view these 3 Tasks:
- 6.5.2008   00:00 -  6.5.2008 23:59   Task 1 (1 day duration)  in UTC
- 7.5.2008   00:00 -  8.5.2008 23:59   Task 2 (2 day duration)  in UTC
- 5.5.2008   00:00 -  9.5.2008 23:59   Task 3 (5 day duration)  in UTC
The Demo User which logs in has TimeZone "Europe/Berlin". The Calendar has a dropdownbox where the user can select either "Facility" or "My TimeZone":
In "Facility" the User should see these 3 Tasks in UTC an not in his own timezone (all tasks from 00:00 to 23:59).
In "my timezone", he should see the 3 Tasks in his TimeZone (Europe/Berlin is UTC+2h at the moment) --> so the tasks are always from 02:00 - 01:59 for him.
The Problem:
When the sap.authentification is enabled and a user logs in, the "Facility" never shows me this Tasks in UTC. The Task is always shown in his timezone (02:00 - 01:59). But I have set UTC anywhere.
In "my timezone", where i load the current user-timezone its shown from 00:00 - 23:59.
I have absolutely no idea why the context element shows this always in user timezone
(_context element "timezone" of the Calendar view is bound to my attribute "zeitzone"_)
Here is the code part - I've debugged already. Everywhere is set UTC, but the Calendar always shows in userTime.
private void fillCalendar(String zeitstring) //
       deleteEntries();
        // check which mode is selected
        if (zeitstring == "Facility")
            // default should be UTC
            zeitzone = TimeZone.getDefault();
            zeitzone.setID("UTC");
            zeitzone = TimeZone.getTimeZone(zeitzone.getID());
            TimeZone.setDefault(zeitzone);
            // calenderinstanz in UTC
            Calendar calendar = Calendar.getInstance().getInstance(zeitzone);
            CctDate firstVisibleDate = new CctDate(new java.sql.Date(calendar.getTimeInMillis()));
            Time myTime = Time.valueOf("00:00:00");
            CctTime firstVisibleTime = new CctTime(myTime);
            // determine the startdate and starttime for the calendar
            wdContext.currentContextElement().setFirstVisibleDate(firstVisibleDate);
            wdContext.currentContextElement().setFirstVisibleTime(firstVisibleTime);
            TimeZone tz = TimeZone.getDefault();
            IECCalendarInterface calendarInterface = new ExampleCalendarEntrySupplier();
            List calendarEntries = calendarInterface.getCalendarEntries();
            int i = 0;
            zeitzone = TimeZone.getDefault();
            for (Iterator iterator = calendarEntries.iterator(); iterator.hasNext();)
                ECCalendarEntry entry = (ECCalendarEntry) iterator.next();
                CctCode timeZoneCode = new CctCode(tz.getDisplayName(), null, null, null, null, null);
                CctDateTime startDate = new CctDateTime(entry.getMStartDate(), timeZoneCode, new Boolean("false"));
                CctDateTime endDate = new CctDateTime(entry.getMEndDate(), timeZoneCode, new Boolean("false"));
                i++;
                zeitzone = TimeZone.getDefault();
                createEntry(startDate, endDate, entry.getMTitle(), entry.getMDescription(), WDTableCellDesign.valueOf(i));
        else if (zeitstring == "My TimeZone")
            ISessionContext context = SessionContextFactory.create();
            zeitzone = context.getCurrentUser().getTimeZone();
            TimeZone.setDefault(zeitzone);
            Calendar calendar = Calendar.getInstance().getInstance(zeitzone);
            CctDate firstVisibleDate = new CctDate(new java.sql.Date(calendar.getTimeInMillis()));
            Time myTime = Time.valueOf("00:00:00");
            CctTime firstVisibleTime = new CctTime(myTime);
            // determine the startdate and starttime for the calendar
            wdContext.currentContextElement().setFirstVisibleDate(firstVisibleDate);
            wdContext.currentContextElement().setFirstVisibleTime(firstVisibleTime);
            TimeZone tz = TimeZone.getDefault();
            IECCalendarInterface calendarInterface = new ExampleCalendarEntrySupplier();
            List calendarEntries = calendarInterface.getCalendarEntries();
            deleteEntries();
            int i = 0;
            for (Iterator iterator = calendarEntries.iterator(); iterator.hasNext();)
                ECCalendarEntry entry = (ECCalendarEntry) iterator.next();
                CctCode timeZoneCode1 = new CctCode(tz.getDisplayName(), null, null, null, null, null);
                CctDateTime startDate = new CctDateTime(entry.getMStartDate(), timeZoneCode1, new Boolean("false"));
                CctDateTime endDate = new CctDateTime(entry.getMEndDate(), timeZoneCode1, new Boolean("false"));
                i++;
                createEntry(startDate, endDate, entry.getMTitle(), entry.getMDescription(), WDTableCellDesign.valueOf(i));
Thank you,
Daniel
Update:
I've tried to fix the problem nearly the whole day.
I've debugged the fillCalendar()-Method while inserting the first Task:
- Default Timezone is "UTC"!
- zeitzone.ID and tz.ID are always set on "UTC"
- timeZoneCode is "Koordinierte Universalzeit null null null null null" (koordinierte Universalzeit is German for UTC )
- startDate : "06.05.2008 00:00:00 Koordinierte Universalzeit false"
- endDate: "06.05.2008 23:59:00 Koordinierte Universalzeit false"
- calendar.zone.ID is set to "UTC"
---> The Calendar shows the task from 06.05.2008  02:00 to 07.05.2008  01.59
Somewhere must stand my timezone and the calendar refuses to display the view in UTC!!! But where?
Edited by: Daniel Mler on May 8, 2008 3:31 PM

Answer 1

Hi Frank,
Thanks for your reply.
You can now look only at the code in the first IF-Condition: (Facility)
I've just tried to replace "UTC" with "CST"... in debugger he calculates me the new times:
startDate: 13.05.2008 05:00:00 Zentrale Normalzeit false
endDate: 14.05.2008 04:59:00 Zentrale Normalzeit false  It works...
The problem is only that the calendar contextelement doesn't set this new time now. It creates the task from 7:00 to 6:59 .... 2 hours later.
These 2 hours are the difference from myTimeZone (the user i logged in: Europe/Berlin = UTC+2h) to UTC.
So I want that the default timezone of the calender is UTC and not the timezone from the logged in user.
But I can't logon without user (then it works!) because I need the User for another functionality (myTimeZone)