// inherit javadoc
public void search(Weight weight, Filter filter, final HitCollector results) throws IOException {
Scorer scorer = weight.scorer(reader);
if (scorer == null) return;
if (filter == null) {
scorer.score(results);
return;
}
DocIdSetIterator filterDocIdIterator =
filter.getDocIdSet(reader).iterator(); // CHECKME: use ConjunctionScorer here?
boolean more = filterDocIdIterator.next() && scorer.skipTo(filterDocIdIterator.doc());
while (more) {
int filterDocId = filterDocIdIterator.doc();
if (filterDocId > scorer.doc() && !scorer.skipTo(filterDocId)) {
more = false;
} else {
int scorerDocId = scorer.doc();
if (scorerDocId == filterDocId) { // permitted by filter
results.collect(scorerDocId, scorer.score());
more = filterDocIdIterator.next();
} else {
more = filterDocIdIterator.skipTo(scorerDocId);
}
}
}
}
/** Scores all documents and passes them to a collector. */
public void score(HitCollector hc, Searcher searcher) throws IOException {
this.searcher = searcher;
while (next(this.searcher)) {
hc.collect(doc(), score(searcher));
}
}
