Upgrade to Elasticsearch 7.17.8.

Original Pull Request #2413
Closes #2401

pom.xml

@@ -19,9 +19,9 @@
 
 	<properties>
 		<!-- version of the RestHighLevelClient	-->
-		<elasticsearch-rhlc>7.17.7</elasticsearch-rhlc>
+		<elasticsearch-rhlc>7.17.8</elasticsearch-rhlc>
 		<!-- version of the new ElasticsearchClient	-->
-		<elasticsearch-java>7.17.7</elasticsearch-java>
+		<elasticsearch-java>7.17.8</elasticsearch-java>
 		<log4j>2.17.1</log4j>
 		<netty>4.1.65.Final</netty>
 		<springdata.commons>2.7.7-SNAPSHOT</springdata.commons>

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
-| 2021.2 (Raj) | 4.4.x | 7.17.7 | 5.3.x | 2.7.x
+| 2021.2 (Raj) | 4.4.x | 7.17.8 | 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
 | 2020.0 (Ockham)footnote:oom[] | 4.1.xfootnote:oom[] | 7.9.3 | 5.3.2 | 2.4.x

src/main/asciidoc/reference/elasticsearch-migration-guide-4.3-4.4.adoc

@@ -82,7 +82,7 @@ The dependencies for the new Elasticsearch client are still optional in Spring D
     <dependency>
         <groupId>co.elastic.clients</groupId>
         <artifactId>elasticsearch-java</artifactId>
-        <version>7.17.7</version>
+        <version>7.17.8</version>
         <exclusions>
             <exclusion>
                 <groupId>commons-logging</groupId>
@@ -93,7 +93,7 @@ The dependencies for the new Elasticsearch client are still optional in Spring D
     <dependency>
         <groupId>org.elasticsearch.client</groupId>
         <artifactId>elasticsearch-rest-client</artifactId> <!-- is Apache 2-->
-        <version>7.17.7</version>
+        <version>7.17.8</version>
         <exclusions>
             <exclusion>
                 <groupId>commons-logging</groupId>

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

@@ -138,9 +138,8 @@ final class DocumentAdapters {
 		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,
+		return new SearchDocumentAdapter(document, score, hit.sort().stream().map(TypeUtils::toString).toArray(),
-				highlightFields, innerHits, nestedMetaData, explanation, matchedQueries, hit.routing());
+			documentFields, highlightFields, innerHits, nestedMetaData, explanation, matchedQueries, hit.routing());	}
-	}
 
 	@Nullable
 	private static Explanation from(@Nullable co.elastic.clients.elasticsearch.core.explain.Explanation explanation) {

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

@@ -19,6 +19,7 @@ import static org.springframework.data.elasticsearch.client.elc.TypeUtils.*;
 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;
@@ -754,7 +755,7 @@ class RequestConverter {
 
 					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) {
@@ -1168,7 +1169,8 @@ class RequestConverter {
 		}
 
 		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 -> {

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

@@ -122,6 +122,31 @@ final class TypeUtils {
 		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/resources/testcontainers-elasticsearch.properties

@@ -15,7 +15,7 @@
 #
 #
 sde.testcontainers.image-name=docker.elastic.co/elasticsearch/elasticsearch
-sde.testcontainers.image-version=7.17.7
+sde.testcontainers.image-version=7.17.8
 #
 #
 # 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