LuXugang commented on code in PR #950:
URL: https://github.com/apache/lucene/pull/950#discussion_r894179561
##########
lucene/core/src/java/org/apache/lucene/search/BooleanWeight.java:
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@@ -344,6 +344,45 @@ public BulkScorer bulkScorer(LeafReaderContext context)
throws IOException {
}
}
+ @Override
+ public int count(LeafReaderContext context) throws IOException {
+ // Implement counting for pure conjunctions in the case when one clause
doesn't match any docs,
+ // or all clauses but one match all docs.
+ if (weightedClauses.isEmpty()) {
+ return 0;
+ }
+ for (WeightedBooleanClause weightedClause : weightedClauses) {
+ switch (weightedClause.clause.getOccur()) {
+ case FILTER:
+ case MUST:
+ break;
+ case MUST_NOT:
+ case SHOULD:
Review Comment:
If `weightedClauses.size() == 1`, and this clause's occur is `SHOULD`, we
could also leverage `Weight#count`, should we need to specialize this case?
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