Upgrade to Elasticsearch 8.5.0.

pom.xml

@@ -21,9 +21,9 @@
 		<springdata.commons>3.0.0-SNAPSHOT</springdata.commons>
 
 		<!-- version of the RestHighLevelClient	-->
-		<elasticsearch-rhlc>7.17.6</elasticsearch-rhlc>
+		<elasticsearch-rhlc>7.17.7</elasticsearch-rhlc>
 		<!-- version of the new ElasticsearchClient	-->
-		<elasticsearch-java>8.4.3</elasticsearch-java>
+		<elasticsearch-java>8.5.0</elasticsearch-java>
 
 		<log4j>2.18.0</log4j>
 		<netty>4.1.65.Final</netty>

src/main/asciidoc/preface.adoc

@@ -37,7 +37,7 @@ built and tested.
 [cols="^,^,^,^,^",options="header"]
 |===
 | Spring Data Release Train | Spring Data Elasticsearch | Elasticsearch | Spring Framework | Spring Boot
-| 2022.0 (Turing) | 5.0.x | 8.4.3 | 6.0.x | 3.0.x?
+| 2022.0 (Turing) | 5.0.x | 8.5.0 | 6.0.x | 3.0.x?
 | 2021.2 (Raj) | 4.4.x | 7.17.3 | 5.3.x | 2.7.x
 | 2021.1 (Q) | 4.3.x | 7.15.2 | 5.3.x | 2.6.x
 | 2021.0 (Pascal) | 4.2.xfootnote:oom[Out of maintenance] | 7.12.0 | 5.3.x | 2.5.x

src/main/asciidoc/reference/elasticsearch-migration-guide-4.4-5.0.adoc

@@ -159,4 +159,4 @@ The old deprecated `RestHighLevelClient` can still be used, but you will need to
 ----
 ====
 
-Make sure to specify the version 7.17.6 explicitly, otherwise maven will resolve to 8.4.3, and this does not exist.
+Make sure to specify the version 7.17.6 explicitly, otherwise maven will resolve to 8.5.0, and this does not exist.

src/main/java/org/springframework/data/elasticsearch/client/elc/DocumentAdapters.java

@@ -138,8 +138,8 @@ public static SearchDocument from(Hit<?> hit, JsonpMapper jsonpMapper) {
 		document.setPrimaryTerm(hit.primaryTerm() != null && hit.primaryTerm() > 0 ? hit.primaryTerm() : 0);
 
 		float score = hit.score() != null ? hit.score().floatValue() : Float.NaN;
-		return new SearchDocumentAdapter(document, score, hit.sort().toArray(new String[0]), documentFields,
-				highlightFields, innerHits, nestedMetaData, explanation, matchedQueries, hit.routing());
+		return new SearchDocumentAdapter(document, score, hit.sort().stream().map(TypeUtils::toString).toArray(),
+				documentFields, highlightFields, innerHits, nestedMetaData, explanation, matchedQueries, hit.routing());
 	}
 
 	public static SearchDocument from(CompletionSuggestOption<EntityAsMap> completionSuggestOption) {

src/main/java/org/springframework/data/elasticsearch/client/elc/RequestConverter.java

@@ -19,6 +19,7 @@
 import static org.springframework.util.CollectionUtils.*;
 
 import co.elastic.clients.elasticsearch._types.Conflicts;
+import co.elastic.clients.elasticsearch._types.FieldValue;
 import co.elastic.clients.elasticsearch._types.InlineScript;
 import co.elastic.clients.elasticsearch._types.OpType;
 import co.elastic.clients.elasticsearch._types.SortOptions;
@@ -735,7 +736,7 @@ public co.elastic.clients.elasticsearch.core.ReindexRequest reindex(ReindexReque
 
 					ReindexRequest.Slice slice = source.getSlice();
 					if (slice != null) {
-						s.slice(sl -> sl.id(slice.getId()).max(slice.getMax()));
+						s.slice(sl -> sl.id(String.valueOf(slice.getId())).max(slice.getMax()));
 					}
 
 					if (source.getQuery() != null) {
@@ -1100,7 +1101,8 @@ public MsearchRequest searchMsearchRequest(
 							}
 
 							if (!isEmpty(query.getSearchAfter())) {
-								bb.searchAfter(query.getSearchAfter().stream().map(Object::toString).collect(Collectors.toList()));
+								bb.searchAfter(query.getSearchAfter().stream().map(it -> FieldValue.of(it.toString()))
+										.collect(Collectors.toList()));
 							}
 
 							query.getRescorerQueries().forEach(rescorerQuery -> bb.rescore(getRescore(rescorerQuery)));
@@ -1241,7 +1243,8 @@ private <T> void prepareSearchRequest(Query query, @Nullable Class<T> clazz, Ind
 		}
 
 		if (!isEmpty(query.getSearchAfter())) {
-			builder.searchAfter(query.getSearchAfter().stream().map(Object::toString).collect(Collectors.toList()));
+			builder.searchAfter(
+					query.getSearchAfter().stream().map(it -> FieldValue.of(it.toString())).collect(Collectors.toList()));
 		}
 
 		query.getRescorerQueries().forEach(rescorerQuery -> builder.rescore(getRescore(rescorerQuery)));

src/main/java/org/springframework/data/elasticsearch/client/elc/TypeUtils.java

@@ -95,6 +95,37 @@ static FieldType fieldType(String type) {
 		return null;
 	}
 
+	@Nullable
+	static String toString(@Nullable FieldValue fieldValue) {
+
+		if (fieldValue == null) {
+			return null;
+		}
+
+		switch (fieldValue._kind()) {
+			case Double -> {
+				return String.valueOf(fieldValue.doubleValue());
+			}
+			case Long -> {
+				return String.valueOf(fieldValue.longValue());
+			}
+			case Boolean -> {
+				return String.valueOf(fieldValue.booleanValue());
+			}
+			case String -> {
+				return fieldValue.stringValue();
+			}
+			case Null -> {
+				return null;
+			}
+			case Any -> {
+				return fieldValue.anyValue().toString();
+			}
+
+			default -> throw new IllegalStateException("Unexpected value: " + fieldValue._kind());
+		}
+	}
+
 	@Nullable
 	static GeoDistanceType geoDistanceType(GeoDistanceOrder.DistanceType distanceType) {
 

src/test/java/org/springframework/data/elasticsearch/core/ReactiveElasticsearchELCIntegrationTests.java

@@ -104,15 +104,15 @@ protected <A extends AggregationContainer<?>> void assertThatAggregationsAreCorr
 		assertThat(bucketList.size()).isEqualTo(3);
 		AtomicInteger count = new AtomicInteger();
 		bucketList.forEach(stringTermsBucket -> {
-			if ("message".equals(stringTermsBucket.key())) {
+			if ("message".equals(stringTermsBucket.key().stringValue())) {
 				count.getAndIncrement();
 				assertThat(stringTermsBucket.docCount()).isEqualTo(3);
 			}
-			if ("some".equals(stringTermsBucket.key())) {
+			if ("some".equals(stringTermsBucket.key().stringValue())) {
 				count.getAndIncrement();
 				assertThat(stringTermsBucket.docCount()).isEqualTo(2);
 			}
-			if ("other".equals(stringTermsBucket.key())) {
+			if ("other".equals(stringTermsBucket.key().stringValue())) {
 				count.getAndIncrement();
 				assertThat(stringTermsBucket.docCount()).isEqualTo(1);
 			}

src/test/java/org/springframework/data/elasticsearch/repository/query/keywords/QueryKeywordsIntegrationTests.java

@@ -266,7 +266,6 @@ void shouldReturnEmptyListOnDerivedMethodWithEmptyInputList() {
 		assertThat(products).isEmpty();
 	}
 
-	@Disabled("issue #2300, Elasticsearch bug https://github.com/elastic/elasticsearch/issues/89760")
 	@Test // #1909
 	@DisplayName("should find by property exists")
 	void shouldFindByPropertyExists() {
@@ -276,7 +275,6 @@ void shouldFindByPropertyExists() {
 		assertThat(searchHits.getTotalHits()).isEqualTo(6);
 	}
 
-	@Disabled("issue #2300, Elasticsearch bug https://github.com/elastic/elasticsearch/issues/89760")
 	@Test // #1909
 	@DisplayName("should find by property is not null")
 	void shouldFindByPropertyIsNotNull() {

src/test/resources/testcontainers-elasticsearch.properties

@@ -15,7 +15,7 @@
 #
 #
 sde.testcontainers.image-name=docker.elastic.co/elasticsearch/elasticsearch
-sde.testcontainers.image-version=8.4.3
+sde.testcontainers.image-version=8.5.0
 #
 #
 # needed as we do a DELETE /* at the end of the tests, will be required from 8.0 on, produces a warning since 7.13