187 lines
4.9 KiB
Java
187 lines
4.9 KiB
Java
package it.cavallium.dbengine.client;
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import io.net5.buffer.api.Send;
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import it.cavallium.dbengine.client.query.ClientQueryParams;
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import it.cavallium.dbengine.client.query.current.data.Query;
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import it.cavallium.dbengine.client.query.current.data.QueryParams;
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import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
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import it.cavallium.dbengine.database.LLLuceneIndex;
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import it.cavallium.dbengine.database.LLSearchResultShard;
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import it.cavallium.dbengine.database.LLSnapshot;
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import it.cavallium.dbengine.database.LLTerm;
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import it.cavallium.dbengine.lucene.collector.Buckets;
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import it.cavallium.dbengine.lucene.searcher.BucketParams;
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import it.unimi.dsi.fastutil.doubles.DoubleArrayList;
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import java.util.List;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.Set;
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import org.jetbrains.annotations.NotNull;
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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.util.function.Tuple2;
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public class LuceneIndexImpl<T, U> implements LuceneIndex<T, U> {
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private final LLLuceneIndex luceneIndex;
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private final Indicizer<T,U> indicizer;
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public LuceneIndexImpl(LLLuceneIndex luceneIndex, Indicizer<T, U> indicizer) {
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this.luceneIndex = luceneIndex;
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this.indicizer = indicizer;
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}
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private LLSnapshot resolveSnapshot(CompositeSnapshot snapshot) {
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if (snapshot == null) {
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return null;
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} else {
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return snapshot.getSnapshot(luceneIndex);
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}
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}
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@Override
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public Mono<Void> addDocument(T key, U value) {
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return indicizer
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.toDocument(key, value)
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.flatMap(doc -> luceneIndex.addDocument(indicizer.toIndex(key), doc));
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}
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@Override
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public Mono<Void> addDocuments(Flux<Entry<T, U>> entries) {
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return luceneIndex
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.addDocuments(entries
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.flatMap(entry -> indicizer
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.toDocument(entry.getKey(), entry.getValue())
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.map(doc -> Map.entry(indicizer.toIndex(entry.getKey()), doc)))
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);
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}
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@Override
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public Mono<Void> deleteDocument(T key) {
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LLTerm id = indicizer.toIndex(key);
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return luceneIndex.deleteDocument(id);
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}
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@Override
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public Mono<Void> updateDocument(T key, @NotNull U value) {
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return indicizer
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.toIndexRequest(key, value)
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.flatMap(doc -> luceneIndex.update(indicizer.toIndex(key), doc));
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}
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@Override
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public Mono<Void> updateDocuments(Flux<Entry<T, U>> entries) {
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return luceneIndex
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.updateDocuments(entries
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.flatMap(entry -> indicizer
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.toDocument(entry.getKey(), entry.getValue())
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.map(doc -> Map.entry(indicizer.toIndex(entry.getKey()), doc)))
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.collectMap(Entry::getKey, Entry::getValue)
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);
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}
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@Override
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public Mono<Void> deleteAll() {
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return luceneIndex.deleteAll();
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}
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@Override
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public Mono<Hits<HitKey<T>>> moreLikeThis(ClientQueryParams queryParams,
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T key,
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U mltDocumentValue) {
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Flux<Tuple2<String, Set<String>>> mltDocumentFields
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= indicizer.getMoreLikeThisDocumentFields(key, mltDocumentValue);
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return luceneIndex
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.moreLikeThis(resolveSnapshot(queryParams.snapshot()),
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queryParams.toQueryParams(),
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indicizer.getKeyFieldName(),
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mltDocumentFields
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)
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.map(this::mapResults)
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.single();
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}
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@Override
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public Mono<Hits<HitKey<T>>> search(ClientQueryParams queryParams) {
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return luceneIndex
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.search(resolveSnapshot(queryParams.snapshot()),
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queryParams.toQueryParams(),
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indicizer.getKeyFieldName()
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)
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.map(this::mapResults)
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.single();
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}
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@Override
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public Mono<Buckets> computeBuckets(@Nullable CompositeSnapshot snapshot,
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@NotNull List<Query> query,
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@Nullable Query normalizaitonQuery,
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BucketParams bucketParams) {
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return luceneIndex
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.computeBuckets(resolveSnapshot(snapshot),
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query,
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normalizaitonQuery,
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bucketParams
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)
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.single();
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}
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private Hits<HitKey<T>> mapResults(LLSearchResultShard llSearchResult) {
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var scoresWithKeysFlux = llSearchResult
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.results()
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.map(hit -> new HitKey<>(indicizer.getKey(hit.key()), hit.score()));
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return new Hits<>(scoresWithKeysFlux, llSearchResult.totalHitsCount(), llSearchResult::close);
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}
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@Override
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public Mono<TotalHitsCount> count(@Nullable CompositeSnapshot snapshot, Query query) {
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return this
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.search(ClientQueryParams.builder().snapshot(snapshot).query(query).limit(0).build())
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.single()
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.map(searchResultKeys -> {
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try (searchResultKeys) {
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return searchResultKeys.totalHitsCount();
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}
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});
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}
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@Override
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public boolean isLowMemoryMode() {
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return luceneIndex.isLowMemoryMode();
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}
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@Override
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public Mono<Void> close() {
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return luceneIndex.close();
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}
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/**
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* Flush writes to disk
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*/
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@Override
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public Mono<Void> flush() {
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return luceneIndex.flush();
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}
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/**
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* Refresh index searcher
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*/
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@Override
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public Mono<Void> refresh(boolean force) {
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return luceneIndex.refresh(force);
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}
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@Override
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public Mono<LLSnapshot> takeSnapshot() {
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return luceneIndex.takeSnapshot();
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}
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@Override
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public Mono<Void> releaseSnapshot(LLSnapshot snapshot) {
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return luceneIndex.releaseSnapshot(snapshot);
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}
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}
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