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