CavalliumDBEngine/src/main/java/it/cavallium/dbengine/lucene/searcher/AdaptiveLuceneMultiSearcher.java

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package it.cavallium.dbengine.lucene.searcher;
import reactor.core.publisher.Mono;
public class AdaptiveLuceneMultiSearcher implements LuceneMultiSearcher {
private static final LuceneMultiSearcher scoredLuceneMultiSearcher = new ScoredLuceneMultiSearcher();
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private static final LuceneMultiSearcher unscoredPagedLuceneMultiSearcher = new UnscoredPagedLuceneMultiSearcher();
private static final LuceneMultiSearcher unscoredIterableLuceneMultiSearcher = new UnscoredUnsortedContinuousLuceneMultiSearcher();
private static final LuceneMultiSearcher countLuceneMultiSearcher = new CountLuceneMultiSearcher();
@Override
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public Mono<LuceneShardSearcher> createShardSearcher(LocalQueryParams queryParams) {
if (queryParams.limit() <= 0) {
return countLuceneMultiSearcher.createShardSearcher(queryParams);
} else if (queryParams.isScored()) {
return scoredLuceneMultiSearcher.createShardSearcher(queryParams);
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} else if (queryParams.offset() == 0 && queryParams.limit() >= 2147483630 && !queryParams.isSorted()) {
return unscoredIterableLuceneMultiSearcher.createShardSearcher(queryParams);
} else {
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return unscoredPagedLuceneMultiSearcher.createShardSearcher(queryParams);
}
}
}