@Override
public BoboDocScorer getDocScorer(BoboIndexReader reader,
FacetTermScoringFunctionFactory scoringFunctionFactory,
Map<String, Float> boostMap) {
FacetDataCache dataCache = getFacetData(reader);
float[] boostList = BoboDocScorer.buildBoostList(dataCache.valArray, boostMap);
return new RangeBoboDocScorer(dataCache,scoringFunctionFactory,boostList);
}