@Override
public Scorer scorer(IndexReader reader,boolean scoreDocsInOrder,boolean topScorer) throws IOException {
if (reader instanceof BoboIndexReader){
BoboIndexReader boboReader = (BoboIndexReader)reader;
TermDocs termDocs = boboReader.termDocs(null);
FacetHandler<?> fhandler = boboReader.getFacetHandler(FacetTermQuery.this._name);
if (fhandler!=null){
DocIdSetIterator dociter = null;
RandomAccessFilter filter = fhandler.buildFilter(FacetTermQuery.this._sel);
if (filter!=null){