/**
* Gets the history entry for each day and transforms it to a <code>JFreeChart</code> entry.
*
* @param timeDifferenceHours
*/
protected TimeSeries getBurndownTimeSeries(
List<IterationHistoryEntry> iterationHistoryEntries, LocalDate startDate, LocalDate endDate) {
TimeSeries burndownSeries = new TimeSeries(BURNDOWN_SERIES_NAME);
for (LocalDate iter = startDate.minusDays(1);
iter.compareTo(endDate) < 0;
iter = iter.plusDays(1)) {
IterationHistoryEntry todayEntry = getHistoryEntryForDate(iterationHistoryEntries, iter);
IterationHistoryEntry yesterdayEntry =
getHistoryEntryForDate(iterationHistoryEntries, iter.minusDays(1));
if (isScopingDone(todayEntry)) {
Pair<TimeSeriesDataItem, TimeSeriesDataItem> scopedEntries =
getBurndownScopedDataItemForDay(yesterdayEntry, todayEntry);
burndownSeries.add(scopedEntries.getFirst());
burndownSeries.add(scopedEntries.getSecond());
}
burndownSeries.add(getBurndownDataItemForDay(todayEntry));
}
return burndownSeries;
}
protected Pair<TimeSeriesDataItem, TimeSeriesDataItem> getBurndownScopedDataItemForDay(
IterationHistoryEntry yesterdayEntry, IterationHistoryEntry todayEntry) {
DateTime timestamp =
todayEntry
.getTimestamp()
.toDateTimeAtCurrentTime()
.minusMinutes(timeDifferenceMinutes)
.toDateMidnight()
.toDateTime()
.plusSeconds(2);
Second period = new Second(timestamp.toDate());
long longValue = yesterdayEntry.getEffortLeftSum() + todayEntry.getDeltaOriginalEstimate();
ExactEstimate scopedValue = new ExactEstimate(longValue);
TimeSeriesDataItem nullItem =
new TimeSeriesDataItem(new Second(timestamp.minusSeconds(1).toDate()), null);
TimeSeriesDataItem scopedItem =
new TimeSeriesDataItem(period, ExactEstimateUtils.extractMajorUnits(scopedValue));
return Pair.create(nullItem, scopedItem);
}