@Override
public BytesValues getBytesValues(boolean needsHashes) {
// if you want hashes to be cached, you should rather store them on disk alongside the values
// rather than loading them into memory
// here - not supported for now, and probably not useful since this field data only applies to
// _id and _uid?
final BinaryDocValues values;
final Bits docsWithField;
try {
final BinaryDocValues v = reader.getBinaryDocValues(field);
if (v == null) {
// segment has no value
values = DocValues.EMPTY_BINARY;
docsWithField = new Bits.MatchNoBits(reader.maxDoc());
} else {
values = v;
final Bits b = reader.getDocsWithField(field);
docsWithField = b == null ? new Bits.MatchAllBits(reader.maxDoc()) : b;
}
} catch (IOException e) {
throw new ElasticsearchIllegalStateException("Cannot load doc values", e);
}
return new BytesValues(false) {
@Override
public int setDocument(int docId) {
this.docId = docId;
return docsWithField.get(docId) ? 1 : 0;
}
@Override
public BytesRef nextValue() {
values.get(docId, scratch);
return scratch;
}
};
}
