try {
final ONavigableMap<Object, Set<OIdentifiable>> subSet = map.subMap(iRangeFrom, iInclusive, iRangeTo, iInclusive);
if (subSet == null)
return ORecordLazySet.EMPTY_SET;
final Set<OIdentifiable> result = new ORecordLazySet(configuration.getDatabase());
for (Set<OIdentifiable> v : subSet.values()) {
result.addAll(v);
}
return result;
} finally {