@Override
public int compare(Long a, Long b) {
if (a.equals(b)) return 0;
else if (a > b) {
if (a - b < 32768) return 1;
else return -1;
} else // a < b
{
if (b - a < 32768) return -1;
else return 1;
}
}
/**
* Searches for contact ids in history of recent messages.
*
* @param provider
* @param after
* @return
*/
List<String> getRecentContactIDs(String provider, Date after) {
List<String> res = new ArrayList<String>();
try {
History history = getHistory();
if (history != null) {
Iterator<HistoryRecord> recs = history.getReader().findLast(NUMBER_OF_MSGS_IN_HISTORY);
SimpleDateFormat sdf = new SimpleDateFormat(HistoryService.DATE_FORMAT);
while (recs.hasNext()) {
HistoryRecord hr = recs.next();
String contact = null;
String recordProvider = null;
Date timestamp = null;
for (int i = 0; i < hr.getPropertyNames().length; i++) {
String propName = hr.getPropertyNames()[i];
if (propName.equals(STRUCTURE_NAMES[0])) recordProvider = hr.getPropertyValues()[i];
else if (propName.equals(STRUCTURE_NAMES[1])) contact = hr.getPropertyValues()[i];
else if (propName.equals(STRUCTURE_NAMES[2])) {
try {
timestamp = sdf.parse(hr.getPropertyValues()[i]);
} catch (ParseException e) {
timestamp = new Date(Long.parseLong(hr.getPropertyValues()[i]));
}
}
}
if (recordProvider == null || contact == null) continue;
if (after != null && timestamp != null && timestamp.before(after)) continue;
if (recordProvider.equals(provider)) res.add(contact);
}
}
} catch (IOException ex) {
logger.error("cannot create recent_messages history", ex);
}
return res;
}