meta.writeLong(minValue);
meta.writeLong(gcd);
final long maxDelta = (maxValue - minValue) / gcd;
final int bits = DirectWriter.unsignedBitsRequired(maxDelta);
meta.writeVInt(bits);
final DirectWriter quotientWriter = DirectWriter.getInstance(data, count, bits);
for (Number nv : values) {
long value = nv == null ? 0 : nv.longValue();
quotientWriter.add((value - minValue) / gcd);
}
quotientWriter.finish();
break;
case DELTA_COMPRESSED:
final long minDelta = delta < 0 ? 0 : minValue;
meta.writeLong(minDelta);
meta.writeVInt(deltaBitsRequired);
final DirectWriter writer = DirectWriter.getInstance(data, count, deltaBitsRequired);
for (Number nv : values) {
long v = nv == null ? 0 : nv.longValue();
writer.add(v - minDelta);
}
writer.finish();
break;
case TABLE_COMPRESSED:
final Long[] decode = uniqueValues.toArray(new Long[uniqueValues.size()]);
Arrays.sort(decode);
final HashMap<Long,Integer> encode = new HashMap<>();
meta.writeVInt(decode.length);
for (int i = 0; i < decode.length; i++) {
meta.writeLong(decode[i]);
encode.put(decode[i], i);
}
meta.writeVInt(tableBitsRequired);
final DirectWriter ordsWriter = DirectWriter.getInstance(data, count, tableBitsRequired);
for (Number nv : values) {
ordsWriter.add(encode.get(nv == null ? 0 : nv.longValue()));
}
ordsWriter.finish();
break;
default:
throw new AssertionError();
}
meta.writeLong(data.getFilePointer());