Examples with DtStart net.fortuna.ical4j.model.property.DtStart used on opensource projects

Example 21 with DtStart

use of net.fortuna.ical4j.model.property.DtStart in project zm-mailbox by Zimbra.

the class TZRule method getDtStart.

/**
 *   From initial TNEF to iCalendar Spec.
 *       The DTSTART property can be hard-coded to 16010101T000000. This is a value that
 *       works well across many calendar client apps.
 *   Note: Some examples seen are similar to this but include the hour of the transition.
 *         Suspect that is useful - so including it.
 *   Zimbra replaces our timezones with closest matchin known ones, so not worth trying
 *   to improve this to see if can choose an accurate start date/time in 1601.
 *
 * @param hr
 * @param min
 * @return
 */
private DtStart getDtStart(int hr, int min) {
    TimeZone utcZone = TimeZone.getTimeZone("UTC");
    GregorianCalendar gc = new GregorianCalendar(1601, 0, /* zero based */
    1, hr, min);
    gc.setTimeZone(utcZone);
    Date startDate = gc.getTime();
    DateTime startDateTime = new DateTime(startDate);
    return new DtStart(startDateTime);
}