CavalliumDBEngine/src/main/java/it/cavallium/dbengine/database/LLLuceneIndex.java
2022-03-19 00:08:23 +01:00

90 lines
2.9 KiB
Java

package it.cavallium.dbengine.database;
import com.google.common.collect.Multimap;
import it.cavallium.dbengine.client.query.current.data.NoSort;
import it.cavallium.dbengine.client.query.current.data.Query;
import it.cavallium.dbengine.client.query.current.data.QueryParams;
import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
import it.cavallium.dbengine.lucene.collector.Buckets;
import it.cavallium.dbengine.lucene.searcher.BucketParams;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
public interface LLLuceneIndex extends LLSnapshottable {
String getLuceneIndexName();
Mono<Void> addDocument(LLTerm id, LLUpdateDocument doc);
Mono<Long> addDocuments(boolean atomic, Flux<Entry<LLTerm, LLUpdateDocument>> documents);
Mono<Void> deleteDocument(LLTerm id);
Mono<Void> update(LLTerm id, LLIndexRequest request);
Mono<Long> updateDocuments(Flux<Entry<LLTerm, LLUpdateDocument>> documents);
Mono<Void> deleteAll();
/**
* @param queryParams the limit is valid for each lucene instance. If you have 15 instances, the number of elements
* returned can be at most <code>limit * 15</code>.
* <p>
* The additional query will be used with the moreLikeThis query: "mltQuery AND additionalQuery"
* @return the collection has one or more flux
*/
Flux<LLSearchResultShard> moreLikeThis(@Nullable LLSnapshot snapshot,
QueryParams queryParams,
@Nullable String keyFieldName,
Multimap<String, String> mltDocumentFields);
/**
* @param queryParams the limit is valid for each lucene instance. If you have 15 instances, the number of elements
* returned can be at most <code>limit * 15</code>
* @return the collection has one or more flux
*/
Flux<LLSearchResultShard> search(@Nullable LLSnapshot snapshot,
QueryParams queryParams,
@Nullable String keyFieldName);
/**
* @return buckets with each value collected into one of the buckets
*/
Mono<Buckets> computeBuckets(@Nullable LLSnapshot snapshot,
@NotNull List<Query> queries,
@Nullable Query normalizationQuery,
BucketParams bucketParams);
default Mono<TotalHitsCount> count(@Nullable LLSnapshot snapshot, Query query) {
QueryParams params = QueryParams.of(query, 0, 0, NoSort.of(), false, Long.MAX_VALUE);
return Mono.from(this.search(snapshot, params, null)
.map(llSearchResultShard -> {
try (llSearchResultShard) {
return llSearchResultShard.totalHitsCount();
}
})
.defaultIfEmpty(TotalHitsCount.of(0, true))
);
}
boolean isLowMemoryMode();
Mono<Void> close();
/**
* Flush writes to disk.
* This does not commit, it syncs the data to the disk
*/
Mono<Void> flush();
/**
* Refresh index searcher
*/
Mono<Void> refresh(boolean force);
}