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HSEARCH-4017 Don't scan index leaves that don't contain topdocs when applying projections #2370

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merged 1 commit into from Sep 18, 2020
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HSEARCH-4017 Don't scan index leaves that don't contain topdocs when applying projections #2370

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2 changes: 1 addition & 1 deletion ...ava/org/hibernate/search/backend/lucene/lowlevel/query/impl/ExplicitDocIdSetIterator.java
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Expand Up @@ -13,7 +13,7 @@ final class ExplicitDocIdSetIterator extends DocIdSetIterator {
static DocIdSetIterator of(int[] sortedTopLevelDocIds, int leafDocBase, int leafMaxLeafId) {
int firstIndex = findFirstGreaterThanOrEqualTo( sortedTopLevelDocIds, leafDocBase );
if ( firstIndex < 0 ) {
return DocIdSetIterator.empty();
return null;
}
else {
return new ExplicitDocIdSetIterator( sortedTopLevelDocIds, leafDocBase, firstIndex, leafMaxLeafId );
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3 changes: 3 additions & 0 deletions ...ain/java/org/hibernate/search/backend/lucene/lowlevel/query/impl/ExplicitDocIdsQuery.java
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Expand Up @@ -62,6 +62,9 @@ public Scorer scorer(LeafReaderContext context) {
DocIdSetIterator matchingDocs = ExplicitDocIdSetIterator.of(
sortedDocIds, context.docBase, context.reader().maxDoc()
);
if ( matchingDocs == null ) {
return null; // Skip this leaf
}
return new ConstantScoreScorer( this, this.score(), scoreMode, matchingDocs );
}

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