93 lines
3.7 KiB
Java
93 lines
3.7 KiB
Java
package it.cavallium.dbengine.lucene.searcher;
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import static it.cavallium.dbengine.client.UninterruptibleScheduler.uninterruptibleScheduler;
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import static it.cavallium.dbengine.database.LLUtils.singleOrClose;
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import static it.cavallium.dbengine.lucene.searcher.GlobalQueryRewrite.NO_REWRITE;
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import io.netty5.util.Send;
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import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
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import it.cavallium.dbengine.database.LLKeyScore;
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import it.cavallium.dbengine.database.LLUtils;
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import it.cavallium.dbengine.database.disk.LLIndexSearcher;
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import it.cavallium.dbengine.database.disk.LLIndexSearchers;
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import it.cavallium.dbengine.database.disk.LLIndexSearchers.UnshardedIndexSearchers;
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import it.cavallium.dbengine.lucene.LuceneUtils;
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import it.cavallium.dbengine.utils.SimpleResource;
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import java.io.IOException;
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import java.io.UncheckedIOException;
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import java.util.ArrayList;
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import java.util.List;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.apache.lucene.search.IndexSearcher;
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import org.jetbrains.annotations.Nullable;
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import reactor.core.publisher.Flux;
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import reactor.core.publisher.Mono;
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import reactor.core.scheduler.Schedulers;
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public class CountMultiSearcher implements MultiSearcher {
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protected static final Logger LOG = LogManager.getLogger(CountMultiSearcher.class);
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@Override
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public Mono<LuceneSearchResult> collectMulti(Mono<LLIndexSearchers> indexSearchersMono,
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LocalQueryParams queryParams,
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String keyFieldName,
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GlobalQueryRewrite transformer) {
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if (transformer != GlobalQueryRewrite.NO_REWRITE) {
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return LuceneUtils.rewriteMulti(this, indexSearchersMono, queryParams, keyFieldName, transformer);
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}
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if (queryParams.isSorted() && queryParams.limitLong() > 0) {
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throw new UnsupportedOperationException(
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"Sorted queries are not supported by SimpleUnsortedUnscoredLuceneMultiSearcher");
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}
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if (queryParams.needsScores() && queryParams.limitLong() > 0) {
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throw new UnsupportedOperationException(
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"Scored queries are not supported by SimpleUnsortedUnscoredLuceneMultiSearcher");
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}
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return Mono.usingWhen(indexSearchersMono, searchers -> Flux
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.fromIterable(searchers.llShards())
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.flatMap(searcher -> this.collect(Mono.just(searcher), queryParams, keyFieldName, transformer))
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.collectList()
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.map(results -> {
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boolean exactTotalHitsCount = true;
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long totalHitsCountValue = 0;
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for (LuceneSearchResult result : results) {
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exactTotalHitsCount &= result.totalHitsCount().exact();
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totalHitsCountValue += result.totalHitsCount().value();
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result.close();
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}
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var totalHitsCount = new TotalHitsCount(totalHitsCountValue, exactTotalHitsCount);
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return new LuceneSearchResult(totalHitsCount, Flux.empty(), null);
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})
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.doOnDiscard(LuceneSearchResult.class, luceneSearchResult -> luceneSearchResult.close()),
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LLUtils::finalizeResource);
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}
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@Override
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public Mono<LuceneSearchResult> collect(Mono<LLIndexSearcher> indexSearcherMono,
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LocalQueryParams queryParams,
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@Nullable String keyFieldName,
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GlobalQueryRewrite transformer) {
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if (transformer != GlobalQueryRewrite.NO_REWRITE) {
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return LuceneUtils.rewrite(this, indexSearcherMono, queryParams, keyFieldName, transformer);
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}
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return Mono.usingWhen(indexSearcherMono, indexSearcher -> Mono.fromCallable(() -> {
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LLUtils.ensureBlocking();
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return (long) indexSearcher.getIndexSearcher().count(queryParams.query());
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}).subscribeOn(uninterruptibleScheduler(Schedulers.boundedElastic())), LLUtils::finalizeResource)
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.publishOn(Schedulers.parallel())
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.transform(TimeoutUtil.timeoutMono(queryParams.timeout()))
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.map(count -> new LuceneSearchResult(TotalHitsCount.of(count, true), Flux.empty(), null));
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}
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@Override
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public String getName() {
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return "count";
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}
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}
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