jpountz commented on issue #12358:
URL: https://github.com/apache/lucene/issues/12358#issuecomment-1596907955
I was wondering about a possible alternative approach that would consist of
handling this optimization more at the collector level. E.g. we could add a new
method to LeafCollector to take a set of doc IDs (pseudo code):
```
void collect(DocIdSet set) {
// default implementation
for (int docID : set) {
collect(docID);
}
}
```
Then `BooleanScorer` could pass a `DocIdSet` to the collector for each
window, and TotalHitCountCollector could override the above method to do more
something like this:
```
void collect(DocIdSet set) {
// total hit count implementation
count += set.size(); // internally uses Long#bitCount rather than
iterating bits one by one
}
```
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