public override TopDocs Rescore(IndexSearcher searcher, TopDocs firstPassTopDocs, int topN)
{
// Copy ScoreDoc[] and sort by ascending docID:
ScoreDoc[] hits = (ScoreDoc[])firstPassTopDocs.ScoreDocs.Clone();
Array.Sort(hits, new ComparerAnonymousInnerClassHelper(this));
IList <AtomicReaderContext> leaves = searcher.IndexReader.Leaves;
TopFieldCollector collector = TopFieldCollector.Create(sort, topN, true, true, true, false);
// Now merge sort docIDs from hits, with reader's leaves:
int hitUpto = 0;
int readerUpto = -1;
int endDoc = 0;
int docBase = 0;
FakeScorer fakeScorer = new FakeScorer();
while (hitUpto < hits.Length)
{
ScoreDoc hit = hits[hitUpto];
int docID = hit.Doc;
AtomicReaderContext readerContext = null;
while (docID >= endDoc)
{
readerUpto++;
readerContext = leaves[readerUpto];
endDoc = readerContext.DocBase + readerContext.Reader.MaxDoc;
}
if (readerContext != null)
{
// We advanced to another segment:
collector.SetNextReader(readerContext);
collector.SetScorer(fakeScorer);
docBase = readerContext.DocBase;
}
fakeScorer.score = hit.Score;
fakeScorer.doc = docID - docBase;
collector.Collect(fakeScorer.doc);
hitUpto++;
}
return(collector.GetTopDocs());
}
public override bool Score(ICollector collector, int max)
{
bool more;
Bucket tmp;
FakeScorer fs = new FakeScorer();
// The internal loop will set the score and doc before calling collect.
collector.SetScorer(fs);
do
{
bucketTable.first = null;
while (current != null) // more queued
{
// check prohibited & required
if ((current.Bits & PROHIBITED_MASK) == 0)
{
// TODO: re-enable this if BQ ever sends us required
// clauses
//&& (current.bits & requiredMask) == requiredMask) {
// NOTE: Lucene always passes max =
// Integer.MAX_VALUE today, because we never embed
// a BooleanScorer inside another (even though
// that should work)... but in theory an outside
// app could pass a different max so we must check
// it:
if (current.Doc >= max)
{
tmp = current;
current = current.Next;
tmp.Next = bucketTable.first;
bucketTable.first = tmp;
continue;
}
if (current.Coord >= minNrShouldMatch)
{
fs.score = (float)(current.Score * coordFactors[current.Coord]);
fs.doc = current.Doc;
fs.freq = current.Coord;
collector.Collect(current.Doc);
}
}
current = current.Next; // pop the queue
}
if (bucketTable.first != null)
{
current = bucketTable.first;
bucketTable.first = current.Next;
return(true);
}
// refill the queue
more = false;
end += BucketTable.SIZE;
for (SubScorer sub = scorers; sub != null; sub = sub.Next)
{
if (sub.More)
{
sub.More = sub.Scorer.Score(sub.Collector, end);
more |= sub.More;
}
}
current = bucketTable.first;
} while (current != null || more);
return(false);
}