69 lines
2.6 KiB
Java
69 lines
2.6 KiB
Java
package it.cavallium.dbengine.lucene.searcher;
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import io.net5.buffer.api.Resource;
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import io.net5.buffer.api.Send;
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import io.net5.buffer.api.internal.ResourceSupport;
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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.LLIndexContext;
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import it.cavallium.dbengine.database.disk.LLIndexSearcher;
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import java.util.ArrayList;
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import java.util.Comparator;
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import java.util.List;
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import reactor.core.publisher.Flux;
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import reactor.core.publisher.Mono;
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public class SimpleUnsortedUnscoredLuceneMultiSearcher implements LuceneMultiSearcher {
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private final LuceneLocalSearcher localSearcher;
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public SimpleUnsortedUnscoredLuceneMultiSearcher(LuceneLocalSearcher localSearcher) {
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this.localSearcher = localSearcher;
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}
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@Override
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public Mono<Send<LuceneSearchResult>> collect(Flux<Send<LLIndexContext>> indexSearchersFlux,
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LocalQueryParams queryParams,
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String keyFieldName) {
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return Mono
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.fromRunnable(() -> {
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LLUtils.ensureBlocking();
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if (!queryParams.isSorted()) {
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throw new UnsupportedOperationException("Sorted queries are not supported"
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+ " by SimpleUnsortedUnscoredLuceneMultiSearcher");
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}
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if (!queryParams.isScored()) {
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throw new UnsupportedOperationException("Scored queries are not supported"
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+ " by SimpleUnsortedUnscoredLuceneMultiSearcher");
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}
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})
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.thenMany(indexSearchersFlux)
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.flatMap(resSend -> localSearcher.collect(Mono.just(resSend).share(), queryParams, keyFieldName))
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.collectList()
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.map(results -> {
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List<LuceneSearchResult> resultsToDrop = new ArrayList<>(results.size());
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List<Flux<LLKeyScore>> resultsFluxes = new ArrayList<>(results.size());
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boolean exactTotalHitsCount = true;
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long totalHitsCountValue = 0;
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for (Send<LuceneSearchResult> resultToReceive : results) {
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LuceneSearchResult result = resultToReceive.receive();
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resultsToDrop.add(result);
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resultsFluxes.add(result.results());
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exactTotalHitsCount &= result.totalHitsCount().exact();
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totalHitsCountValue += result.totalHitsCount().value();
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}
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var totalHitsCount = new TotalHitsCount(totalHitsCountValue, exactTotalHitsCount);
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Flux<LLKeyScore> mergedFluxes = Flux.merge(resultsFluxes);
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return new LuceneSearchResult(totalHitsCount, mergedFluxes, d -> {
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for (LuceneSearchResult luceneSearchResult : resultsToDrop) {
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luceneSearchResult.close();
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}
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}).send();
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})
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.doOnDiscard(Send.class, Send::close);
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}
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}
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