private static long invokeRecurrence(RRule rrule, DateTime original, DateValue startDateAsDV) {
long newDueDate = -1;
RecurrenceIterator iterator =
RecurrenceIteratorFactory.createRecurrenceIterator(
rrule, startDateAsDV, TimeZone.getDefault());
DateValue nextDate;
for (int i = 0; i < 10; i++) { // ten tries then we give up
if (!iterator.hasNext()) {
return -1;
}
nextDate = iterator.next();
if (nextDate.compareTo(startDateAsDV) == 0) {
continue;
}
newDueDate = buildNewDueDate(original, nextDate);
// detect if we finished
if (newDueDate > original.getMillis()) {
break;
}
}
return newDueDate;
}
/** Compute long due date from DateValue */
private static long buildNewDueDate(DateTime original, DateValue nextDate) {
long newDueDate;
if (nextDate instanceof DateTimeValueImpl) {
DateTimeValueImpl newDateTime = (DateTimeValueImpl) nextDate;
DateTime date =
newDateUtc(
newDateTime.year(),
newDateTime.month(),
newDateTime.day(),
newDateTime.hour(),
newDateTime.minute(),
newDateTime.second())
.toLocal();
// time may be inaccurate due to DST, force time to be same
date =
date.withHourOfDay(original.getHourOfDay()).withMinuteOfHour(original.getMinuteOfHour());
newDueDate = Task.createDueDate(Task.URGENCY_SPECIFIC_DAY_TIME, date.getMillis());
} else {
newDueDate =
Task.createDueDate(
Task.URGENCY_SPECIFIC_DAY,
newDate(nextDate.year(), nextDate.month(), nextDate.day()).getMillis());
}
return newDueDate;
}
/** Compute long due date from DateValue */
private static long buildNewDueDate(Date original, DateValue nextDate) {
long newDueDate;
if (nextDate instanceof DateTimeValueImpl) {
DateTimeValueImpl newDateTime = (DateTimeValueImpl) nextDate;
Date date =
new Date(
Date.UTC(
newDateTime.year() - 1900,
newDateTime.month() - 1,
newDateTime.day(),
newDateTime.hour(),
newDateTime.minute(),
newDateTime.second()));
// time may be inaccurate due to DST, force time to be same
date.setHours(original.getHours());
date.setMinutes(original.getMinutes());
newDueDate = Task.createDueDate(Task.URGENCY_SPECIFIC_DAY_TIME, date.getTime());
} else {
newDueDate =
Task.createDueDate(
Task.URGENCY_SPECIFIC_DAY,
new Date(nextDate.year() - 1900, nextDate.month() - 1, nextDate.day()).getTime());
}
return newDueDate;
}