@Override
public RandomAccessFilter buildRandomAccessFilter(String value, Properties prop) throws IOException
{
MultiValueFacetFilter f= new MultiValueFacetFilter(this, value);
AdaptiveFacetFilter af = new AdaptiveFacetFilter(new FacetDataCacheBuilder(){
@Override
public FacetDataCache build(BoboIndexReader reader) {
return getFacetData(reader);
}