/**
* Utility method to return the number of documents that fell in the given bucket (identified by
* the bucket ordinal)
*/
public final int bucketDocCount(long bucketOrd) {
if (bucketOrd >= docCounts.size()) {
// This may happen eg. if no document in the highest buckets is accepted by a sub aggregator.
// For example, if there is a long terms agg on 3 terms 1,2,3 with a sub filter aggregator and
// if no document with 3 as a value
// matches the filter, then the filter will never collect bucket ord 3. However, the long
// terms agg will call bucketAggregations(3)
// on the filter aggregator anyway to build sub-aggregations.
return 0;
} else {
return docCounts.get(bucketOrd);
}
}
@Override
public int advance(int target) throws IOException {
if (remaining == 0) {
return currentDocId = NO_MORE_DOCS;
}
currentDocId = parentsIterator.advance(target);
if (currentDocId == DocIdSetIterator.NO_MORE_DOCS) {
return currentDocId;
}
bytesValues.setDocument(currentDocId);
long index = parentIds.find(bytesValues.nextValue(), bytesValues.currentValueHash());
if (index != -1) {
currentScore = scores.get(index);
currentScore /= occurrences.get(index);
remaining--;
return currentDocId;
} else {
return nextDoc();
}
}