private BulkScorerAndDoc scoreWindow(
BulkScorerAndDoc top,
LeafCollector collector,
LeafCollector singleClauseCollector,
Bits acceptDocs,
int min,
int max)
throws IOException {
final int windowBase = top.next & ~MASK; // find the window that the next match belongs to
final int windowMin = Math.max(min, windowBase);
final int windowMax = Math.min(max, windowBase + SIZE);
// Fill 'leads' with all scorers from 'head' that are in the right window
leads[0] = head.pop();
int maxFreq = 1;
while (head.size() > 0 && head.top().next < windowMax) {
leads[maxFreq++] = head.pop();
}
if (minShouldMatch == 1 && maxFreq == 1) {
// special case: only one scorer can match in the current window,
// we can collect directly
final BulkScorerAndDoc bulkScorer = leads[0];
scoreWindowSingleScorer(
bulkScorer, singleClauseCollector, acceptDocs, windowMin, windowMax, max);
return head.add(bulkScorer);
} else {
// general case, collect through a bit set first and then replay
scoreWindowMultipleScorers(collector, acceptDocs, windowBase, windowMin, windowMax, maxFreq);
return head.top();
}
}
