}
final BinaryDocValues docToOrds = getBinary(field);
final FST<Long> fst = instance;
// per-thread resources
final BytesReader in = fst.getBytesReader();
final Arc<Long> firstArc = new Arc<Long>();
final Arc<Long> scratchArc = new Arc<Long>();
final IntsRef scratchInts = new IntsRef();
final BytesRefFSTEnum<Long> fstEnum = new BytesRefFSTEnum<Long>(fst);
final BytesRef ref = new BytesRef();
final ByteArrayDataInput input = new ByteArrayDataInput();
return new SortedSetDocValues() {
long currentOrd;
@Override
public long nextOrd() {
if (input.eof()) {
return NO_MORE_ORDS;
} else {
currentOrd += input.readVLong();
return currentOrd;
}
}
@Override
public void setDocument(int docID) {
docToOrds.get(docID, ref);
input.reset(ref.bytes, ref.offset, ref.length);
currentOrd = 0;
}
@Override
public void lookupOrd(long ord, BytesRef result) {
try {
in.setPosition(0);
fst.getFirstArc(firstArc);
IntsRef output = Util.getByOutput(fst, ord, in, firstArc, scratchArc, scratchInts);
result.bytes = new byte[output.length];
result.offset = 0;
result.length = 0;