public Object freeze(ColumnLoader.ValueSet valueSet) {
final int chunksPerWord = 64 / bitCount;
final List<Comparable> valueList = valueSet.values;
final int valueCount = valueList.size();
final int wordCount = (valueCount + (chunksPerWord - 1)) / chunksPerWord;
final int remainingChunkCount = valueCount % chunksPerWord;
final long[] longs = new long[wordCount];
final int n = valueCount / chunksPerWord;
int i;
int k = 0;
if (valueCount > 0 && valueList.get(0) instanceof Boolean) {
@SuppressWarnings("unchecked")
final List<Boolean> booleans = (List) valueSet.values;
for (i = 0; i < n; i++) {
long v = 0;
for (int j = 0; j < chunksPerWord; j++) {
v |= (booleans.get(k++) ? (1 << (bitCount * j)) : 0);
}
longs[i] = v;
}
if (remainingChunkCount > 0) {
long v = 0;
for (int j = 0; j < remainingChunkCount; j++) {
v |= (booleans.get(k++) ? (1 << (bitCount * j)) : 0);
}
longs[i] = v;
}
} else {
@SuppressWarnings("unchecked")
final List<Number> numbers = (List) valueSet.values;
for (i = 0; i < n; i++) {
long v = 0;
for (int j = 0; j < chunksPerWord; j++) {
v |= (numbers.get(k++).longValue() << (bitCount * j));
}
longs[i] = v;
}
if (remainingChunkCount > 0) {
long v = 0;
for (int j = 0; j < remainingChunkCount; j++) {
v |= (numbers.get(k++).longValue() << (bitCount * j));
}
longs[i] = v;
}
}
return longs;
}
public Statistic getStatistic() {
return Statistics.of(list.size(), Collections.<BitSet>emptyList());
}