From 2c8bb8a48016724e779ab4fbdba1a9a9a755d5b2 Mon Sep 17 00:00:00 2001
From: Andrea Cavalli <andrea@cavallium.it>
Date: Sat, 6 Feb 2021 15:53:10 +0100
Subject: [PATCH] Update lucene

---
 src/main/java/it/cavallium/dbengine/client/Indicizer.java | 2 +-
 .../java/it/cavallium/dbengine/client/LuceneIndex.java    | 8 ++++++--
 .../dbengine/database/collections/DatabaseEmpty.java      | 3 +++
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/main/java/it/cavallium/dbengine/client/Indicizer.java b/src/main/java/it/cavallium/dbengine/client/Indicizer.java
index 311e95b..76127a4 100644
--- a/src/main/java/it/cavallium/dbengine/client/Indicizer.java
+++ b/src/main/java/it/cavallium/dbengine/client/Indicizer.java
@@ -18,7 +18,7 @@ public abstract class Indicizer<T, U> {
 
 	public abstract @NotNull T getKey(String key);
 
-	public Flux<Tuple2<String, Set<String>>> getMoreLikeThisDocumentFields(U value) {
+	public Flux<Tuple2<String, Set<String>>> getMoreLikeThisDocumentFields(T key, U value) {
 		return Flux.empty();
 	}
 }
diff --git a/src/main/java/it/cavallium/dbengine/client/LuceneIndex.java b/src/main/java/it/cavallium/dbengine/client/LuceneIndex.java
index 312cc5f..af79a35 100644
--- a/src/main/java/it/cavallium/dbengine/client/LuceneIndex.java
+++ b/src/main/java/it/cavallium/dbengine/client/LuceneIndex.java
@@ -110,9 +110,11 @@ public class LuceneIndex<T, U> implements LLSnapshottable {
 	 * @return the collection has one or more flux
 	 */
 	public Mono<SearchResultKeys<T>> moreLikeThis(@Nullable CompositeSnapshot snapshot,
+			T key,
 			U mltDocumentValue,
 			int limit) {
-		Flux<Tuple2<String, Set<String>>> mltDocumentFields = indicizer.getMoreLikeThisDocumentFields(mltDocumentValue);
+		Flux<Tuple2<String, Set<String>>> mltDocumentFields
+				= indicizer.getMoreLikeThisDocumentFields(key, mltDocumentValue);
 		return luceneIndex
 				.moreLikeThis(resolveSnapshot(snapshot), mltDocumentFields, limit, indicizer.getKeyFieldName())
 				.map(llSearchResult -> this.transformLuceneResult(llSearchResult, MultiSort.topScore(), limit));
@@ -127,10 +129,12 @@ public class LuceneIndex<T, U> implements LLSnapshottable {
 	 * @return the collection has one or more flux
 	 */
 	public Mono<SearchResult<T, U>> moreLikeThisWithValues(@Nullable CompositeSnapshot snapshot,
+			T key,
 			U mltDocumentValue,
 			int limit,
 			ValueGetter<T, U> valueGetter) {
-		Flux<Tuple2<String, Set<String>>> mltDocumentFields = indicizer.getMoreLikeThisDocumentFields(mltDocumentValue);
+		Flux<Tuple2<String, Set<String>>> mltDocumentFields
+				= indicizer.getMoreLikeThisDocumentFields(key, mltDocumentValue);
 		return luceneIndex
 				.moreLikeThis(resolveSnapshot(snapshot), mltDocumentFields, limit, indicizer.getKeyFieldName())
 				.map(llSearchResult ->
diff --git a/src/main/java/it/cavallium/dbengine/database/collections/DatabaseEmpty.java b/src/main/java/it/cavallium/dbengine/database/collections/DatabaseEmpty.java
index d6b5ddf..c73ce4a 100644
--- a/src/main/java/it/cavallium/dbengine/database/collections/DatabaseEmpty.java
+++ b/src/main/java/it/cavallium/dbengine/database/collections/DatabaseEmpty.java
@@ -35,6 +35,9 @@ public class DatabaseEmpty {
 
 	public static final class Nothing {
 
+		@SuppressWarnings("InstantiationOfUtilityClass")
+		public static Nothing INSTANCE = new Nothing();
+
 		private Nothing() {
 
 		}