public static String calculateName(DateIntervalType intervalType, Date d) {
if (d == null) return null;
Locale l = Locale.getDefault();
if (MILLENIUM.equals(intervalType)
|| CENTURY.equals(intervalType)
|| DECADE.equals(intervalType)
|| YEAR.equals(intervalType)) {
SimpleDateFormat format = new SimpleDateFormat("yyyy", l);
return format.format(d);
}
if (QUARTER.equals(intervalType) || MONTH.equals(intervalType)) {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM", l);
return format.format(d);
}
if (WEEK.equals(intervalType) || DAY.equals(intervalType) || DAY_OF_WEEK.equals(intervalType)) {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
return format.format(d);
}
if (HOUR.equals(intervalType)) {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH");
return format.format(d);
}
if (MINUTE.equals(intervalType)) {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm");
return format.format(d);
}
if (SECOND.equals(intervalType)) {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return format.format(d);
}
return format.format(d);
}
protected void nextIntervalDate(Calendar c, DateIntervalType intervalType, int intervals) {
if (MILLENIUM.equals(intervalType)) {
c.add(Calendar.YEAR, 1000 * intervals);
} else if (CENTURY.equals(intervalType)) {
c.add(Calendar.YEAR, 100 * intervals);
} else if (DECADE.equals(intervalType)) {
c.add(Calendar.YEAR, 10 * intervals);
} else if (YEAR.equals(intervalType)) {
c.add(Calendar.YEAR, intervals);
} else if (QUARTER.equals(intervalType)) {
c.add(Calendar.MONTH, 3 * intervals);
} else if (MONTH.equals(intervalType)) {
c.add(Calendar.MONTH, intervals);
} else if (WEEK.equals(intervalType)) {
c.add(Calendar.DAY_OF_MONTH, 7 * intervals);
} else if (DAY.equals(intervalType) || DAY_OF_WEEK.equals(intervalType)) {
c.add(Calendar.DAY_OF_MONTH, intervals);
} else if (HOUR.equals(intervalType)) {
c.add(Calendar.HOUR_OF_DAY, intervals);
} else if (MINUTE.equals(intervalType)) {
c.add(Calendar.MINUTE, intervals);
} else if (SECOND.equals(intervalType)) {
c.add(Calendar.SECOND, intervals);
} else {
// Default to year to avoid infinite loops
c.add(Calendar.YEAR, intervals);
}
}