@Override
public Scorer filteredScorer(LeafReaderContext context, Weight weight, DocIdSet docIdSet)
throws IOException {
// CHANGE: If threshold is 0, always pass down the accept docs, don't pay the price of calling
// nextDoc even...
final Bits filterAcceptDocs = docIdSet.bits();
if (threshold == 0) {
if (filterAcceptDocs != null) {
return weight.scorer(context, filterAcceptDocs);
} else {
return FilteredQuery.LEAP_FROG_QUERY_FIRST_STRATEGY.filteredScorer(
context, weight, docIdSet);
}
}
// CHANGE: handle "default" value
if (threshold == -1) {
// default value, don't iterate on only apply filter after query if its not a "fast"
// docIdSet
// TODO: is there a way we could avoid creating an iterator here?
if (filterAcceptDocs != null && DocIdSets.isBroken(docIdSet.iterator())) {
return FilteredQuery.QUERY_FIRST_FILTER_STRATEGY.filteredScorer(
context, weight, docIdSet);
}
}
return super.filteredScorer(context, weight, docIdSet);
}
