114 lines
4.6 KiB
Java
114 lines
4.6 KiB
Java
package it.cavallium.dbengine.lucene.searcher;
|
|
|
|
import static it.cavallium.dbengine.client.UninterruptibleScheduler.uninterruptibleScheduler;
|
|
import static it.cavallium.dbengine.lucene.searcher.GlobalQueryRewrite.NO_REWRITE;
|
|
|
|
import io.netty5.buffer.api.Send;
|
|
import it.cavallium.dbengine.database.LLUtils;
|
|
import it.cavallium.dbengine.database.disk.LLIndexSearchers;
|
|
import it.cavallium.dbengine.database.disk.LLTempHugePqEnv;
|
|
import java.io.IOException;
|
|
import org.jetbrains.annotations.Nullable;
|
|
import reactor.core.publisher.Mono;
|
|
import reactor.core.scheduler.Schedulers;
|
|
|
|
public class AdaptiveMultiSearcher implements MultiSearcher {
|
|
|
|
private static final StandardSearcher standardSearcher = new StandardSearcher();
|
|
|
|
private static final MultiSearcher count = new CountMultiSearcher();
|
|
|
|
private static final MultiSearcher scoredPaged = new ScoredPagedMultiSearcher();
|
|
|
|
private static final MultiSearcher unsortedUnscoredContinuous = new UnsortedStreamingMultiSearcher();
|
|
|
|
/**
|
|
* Use in-memory collectors if the expected results count is lower or equal than this limit
|
|
*/
|
|
private final int maxInMemoryResultEntries;
|
|
|
|
@Nullable
|
|
private final SortedByScoreFullMultiSearcher sortedByScoreFull;
|
|
|
|
@Nullable
|
|
private final SortedScoredFullMultiSearcher sortedScoredFull;
|
|
|
|
public AdaptiveMultiSearcher(LLTempHugePqEnv env, boolean useHugePq, int maxInMemoryResultEntries) {
|
|
sortedByScoreFull = useHugePq ? new SortedByScoreFullMultiSearcher(env) : null;
|
|
sortedScoredFull = useHugePq ? new SortedScoredFullMultiSearcher(env) : null;
|
|
this.maxInMemoryResultEntries = maxInMemoryResultEntries;
|
|
}
|
|
|
|
@Override
|
|
public Mono<LuceneSearchResult> collectMulti(Mono<Send<LLIndexSearchers>> indexSearchersMono,
|
|
LocalQueryParams queryParams,
|
|
@Nullable String keyFieldName,
|
|
GlobalQueryRewrite transformer) {
|
|
if (transformer == NO_REWRITE) {
|
|
return transformedCollectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
|
|
} else {
|
|
return indexSearchersMono
|
|
.publishOn(uninterruptibleScheduler(Schedulers.boundedElastic()))
|
|
.<LocalQueryParams>handle((indexSearchers, sink) -> {
|
|
try {
|
|
sink.next(transformer.rewrite(indexSearchers.receive(), queryParams));
|
|
} catch (IOException ex) {
|
|
sink.error(ex);
|
|
}
|
|
})
|
|
.flatMap(queryParams2 -> transformedCollectMulti(indexSearchersMono, queryParams2, keyFieldName, NO_REWRITE));
|
|
}
|
|
}
|
|
|
|
// Remember to change also AdaptiveLocalSearcher
|
|
public Mono<LuceneSearchResult> transformedCollectMulti(Mono<Send<LLIndexSearchers>> indexSearchersMono,
|
|
LocalQueryParams queryParams,
|
|
@Nullable String keyFieldName,
|
|
GlobalQueryRewrite transformer) {
|
|
// offset + limit
|
|
long realLimit = queryParams.offsetLong() + queryParams.limitLong();
|
|
long maxAllowedInMemoryLimit
|
|
= Math.max(maxInMemoryResultEntries, (long) queryParams.pageLimits().getPageLimit(0));
|
|
|
|
return LLUtils.usingSendResource(indexSearchersMono, indexSearchers -> {
|
|
if (queryParams.limitLong() == 0) {
|
|
return count.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
|
|
} else if (realLimit <= maxInMemoryResultEntries) {
|
|
return standardSearcher.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
|
|
} else if (queryParams.isSorted()) {
|
|
if (realLimit <= maxAllowedInMemoryLimit) {
|
|
return scoredPaged.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
|
|
} else {
|
|
if (queryParams.isSortedByScore()) {
|
|
if (queryParams.limitLong() < maxInMemoryResultEntries) {
|
|
throw new UnsupportedOperationException("Allowed limit is " + maxInMemoryResultEntries + " or greater");
|
|
}
|
|
if (sortedByScoreFull != null) {
|
|
return sortedByScoreFull.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
|
|
} else {
|
|
return scoredPaged.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
|
|
}
|
|
} else {
|
|
if (queryParams.limitLong() < maxInMemoryResultEntries) {
|
|
throw new UnsupportedOperationException("Allowed limit is " + maxInMemoryResultEntries + " or greater");
|
|
}
|
|
if (sortedScoredFull != null) {
|
|
return sortedScoredFull.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
|
|
} else {
|
|
return scoredPaged.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// Run large/unbounded searches using the continuous multi searcher
|
|
return unsortedUnscoredContinuous.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
|
|
}
|
|
}, true);
|
|
}
|
|
|
|
@Override
|
|
public String getName() {
|
|
return "adaptive local";
|
|
}
|
|
}
|