DATAES-888 - Release version 3.2.10 (Moore SR10).

Original PR: #511

.travis.yml

@@ -1,22 +0,0 @@
-language: java
-
-jdk:
-  - oraclejdk8
-
-before_install:
-  - curl -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-${ES_VERSION}.deb && sudo dpkg -i --force-confnew elasticsearch-${ES_VERSION}.deb && sudo service elasticsearch restart
-  - sleep 10
-
-env:
-  global:
-  - ES_VERSION=6.5.1
-
-addons:
-  apt:
-    packages:
-    - oracle-java8-set-default
-    - oracle-java8-installer
-
-sudo: true
-
-script: "mvn clean dependency:list test -Dsort"

Jenkinsfile

@@ -3,7 +3,7 @@ pipeline {
 
 	triggers {
 		pollSCM 'H/10 * * * *'
-		upstream(upstreamProjects: "spring-data-commons/master", threshold: hudson.model.Result.SUCCESS)
+		upstream(upstreamProjects: "spring-data-commons/2.2.x", threshold: hudson.model.Result.SUCCESS)
 	}
 
 	options {
@@ -15,7 +15,7 @@ pipeline {
 		stage("Test") {
 			when {
 				anyOf {
-					branch 'master'
+					branch '3.2.x'
 					not { triggeredBy 'UpstreamCause' }
 				}
 			}
@@ -39,7 +39,7 @@ pipeline {
 		stage('Release to artifactory') {
 			when {
 				anyOf {
-					branch 'master'
+					branch '3.2.x'
 					not { triggeredBy 'UpstreamCause' }
 				}
 			}
@@ -70,7 +70,7 @@ pipeline {
 		}
 		stage('Publish documentation') {
 			when {
-				branch 'master'
+				branch '3.2.x'
 			}
 			agent {
 				docker {

pom.xml

@@ -5,12 +5,12 @@
 
     <groupId>org.springframework.data</groupId>
     <artifactId>spring-data-elasticsearch</artifactId>
-    <version>3.2.0.RELEASE</version>
+    <version>3.2.10.RELEASE</version>
 
 	<parent>
 		<groupId>org.springframework.data.build</groupId>
 		<artifactId>spring-data-parent</artifactId>
-		<version>2.2.0.RELEASE</version>
+		<version>2.2.10.RELEASE</version>
 	</parent>
 
 	<name>Spring Data Elasticsearch</name>
@@ -19,9 +19,9 @@
 
 	<properties>
 		<commonslang>2.6</commonslang>
-		<elasticsearch>6.8.1</elasticsearch>
+		<elasticsearch>6.8.12</elasticsearch>
 		<log4j>2.9.1</log4j>
-		<springdata.commons>2.2.0.RELEASE</springdata.commons>
+		<springdata.commons>2.2.10.RELEASE</springdata.commons>
 		<netty>4.1.39.Final</netty>
 		<java-module-name>spring.data.elasticsearch</java-module-name>
 	</properties>
@@ -248,6 +248,24 @@
 			<scope>test</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>com.github.tomakehurst</groupId>
+			<artifactId>wiremock-jre8</artifactId>
+			<version>2.25.1</version>
+			<scope>test</scope>
+			<exclusions>
+				<!-- these exclusions are needed because of Elasticsearch JarHell-->
+				<exclusion>
+					<groupId>commons-logging</groupId>
+					<artifactId>commons-logging</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>org.ow2.asm</groupId>
+					<artifactId>asm</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+
 		<!-- Upgrade xbean to 4.5 to prevent incompatibilities due to ASM versions -->
 		<dependency>
 			<groupId>org.apache.xbean</groupId>
@@ -258,8 +276,8 @@
 
 		<dependency>
 			<groupId>javax.servlet</groupId>
-			<artifactId>servlet-api</artifactId>
-			<version>3.0-alpha-1</version>
+			<artifactId>javax.servlet-api</artifactId>
+			<version>3.1.0</version>
 			<scope>test</scope>
 		</dependency>
 
@@ -267,14 +285,6 @@
 
 	<build>
 		<plugins>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-assembly-plugin</artifactId>
-			</plugin>
-			<plugin>
-				<groupId>org.asciidoctor</groupId>
-				<artifactId>asciidoctor-maven-plugin</artifactId>
-			</plugin>
 			<!--
 			please do not remove this configuration for surefire - we need that to avoid issue with jar hell
 			-->
@@ -286,12 +296,21 @@
 					<useFile>false</useFile>
 					<includes>
 						<include>**/*Tests.java</include>
+						<include>**/*Test.java</include>
 					</includes>
 					<systemPropertyVariables>
 						<es.set.netty.runtime.available.processors>false</es.set.netty.runtime.available.processors>
 					</systemPropertyVariables>
 				</configuration>
 			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-assembly-plugin</artifactId>
+			</plugin>
+			<plugin>
+				<groupId>org.asciidoctor</groupId>
+				<artifactId>asciidoctor-maven-plugin</artifactId>
+			</plugin>
 		</plugins>
 	</build>
 

src/main/asciidoc/preface.adoc

@@ -35,8 +35,8 @@ The following table shows the Elasticsearch versions that are used by Spring Dat
 [cols="^,^,^,^",options="header"]
 |===
 |Spring Data Release Train |Spring Data Elasticsearch |Elasticsearch | Spring Boot
-|Moorefootnote:cdv[Currently in development] |3.2.xfootnote:cdv[]|6.8.1 / 7.xfootnote:hrc[via the <<elasticsearch.clients.rest,high-level REST client>>]|2.2.0footnote:cdv[]
-|Lovelace |3.1.x |6.2.2 / 7.xfootnote:hrc[]|2.1.x
+|Moore |3.2.x |6.8.12 |2.2.x
+|Lovelace |3.1.x |6.2.2|2.1.x
 |Kayfootnote:oom[Out of maintenance]|3.0.xfootnote:oom[] |5.5.0 |2.0.xfootnote:oom[]
 |Ingallsfootnote:oom[]|2.1.xfootnote:oom[] |2.4.0 |1.5.xfootnote:oom[]
 |===

src/main/asciidoc/reference/elasticsearch-clients.adoc

@@ -104,8 +104,15 @@ static class Config {
   @Bean
   ReactiveElasticsearchClient client() {
 
-    ClientConfiguration clientConfiguration = ClientConfiguration.builder() <1>
+    ClientConfiguration clientConfiguration = ClientConfiguration.builder()   <1>
       .connectedTo("localhost:9200", "localhost:9291")
+      .withWebClientConfigurer(webClient -> {                                 <2>
+        ExchangeStrategies exchangeStrategies = ExchangeStrategies.builder()
+            .codecs(configurer -> configurer.defaultCodecs()
+                .maxInMemorySize(-1))
+            .build();
+        return webClient.mutate().exchangeStrategies(exchangeStrategies).build();
+       })
       .build();
 
     return ReactiveRestClients.create(clientConfiguration);
@@ -124,6 +131,7 @@ Mono<IndexResponse> response = client.index(request ->
 );
 ----
 <1> Use the builder to provide cluster addresses, set default `HttpHeaders` or enable SSL.
+<2> when configuring a reactive client, the `withWebClientConfigurer` hook can be used to customize the WebClient.
 ====
 
 NOTE: The ReactiveClient response, especially for search operations, is bound to the `from` (offset) & `size` (limit) options of the request.

src/main/asciidoc/reference/elasticsearch-repository-queries.adoc

@@ -8,7 +8,7 @@ The Elasticsearch module supports all basic query building feature as string que
 
 === Declared queries
 
-Deriving the query from the method name is not always sufficient and/or may result in unreadable method names. In this case one might make either use of `@Query` annotation (see <<elasticsearch.query-methods.at-query>> ).
+Deriving the query from the method name is not always sufficient and/or may result in unreadable method names. In this case one might make use of the `@Query` annotation (see <<elasticsearch.query-methods.at-query>> ).
 
 [[elasticsearch.query-methods.criterions]]
 == Query creation
@@ -29,12 +29,14 @@ The method name above will be translated into the following Elasticsearch json q
 
 [source]
 ----
-{ "bool" :
-    { "must" :
-        [
-            { "field" : {"name" : "?"} },
-            { "field" : {"price" : "?"} }
-        ]
+{
+    "query": {
+        "bool" : {
+            "must" : [
+                { "query_string" : { "query" : "?", "fields" : [ "name" ] } },
+                { "query_string" : { "query" : "?", "fields" : [ "price" ] } }
+            ]
+        }
     }
 }
 ----
@@ -48,80 +50,184 @@ A list of supported keywords for Elasticsearch is shown below.
 | Sample
 | Elasticsearch Query String| `And`
 | `findByNameAndPrice`
-| `{"bool" : {"must" : [ {"field" : {"name" : "?"}},
-                                        {"field" : {"price" : "?"}} ]}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      { "query_string" : { "query" : "?", "fields" : [ "name" ] } },
+      { "query_string" : { "query" : "?", "fields" : [ "price" ] } }
+    ]
+  }
+}}`
 
 | `Or`
 | `findByNameOrPrice`
-| `{"bool" : {"should" : [ {"field" : {"name" : "?"}},
-                                        {"field" : {"price" : "?"}} ]}}`
+| `{ "query" : {
+"bool" : {
+"should" : [
+      { "query_string" : { "query" : "?", "fields" : [ "name" ] } },
+      { "query_string" : { "query" : "?", "fields" : [ "price" ] } }
+    ]
+  }
+}}`
 
 | `Is`
 | `findByName`
-| `{"bool" : {"must" : {"field" : {"name" : "?"}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      { "query_string" : { "query" : "?", "fields" : [ "name" ] } }
+    ]
+  }
+}}`
 
 | `Not`
 | `findByNameNot`
-| `{"bool" : {"must_not" : {"field" : {"name" : "?"}}}}`
+| `{ "query" : {
+"bool" : {
+"must_not" : [
+      { "query_string" : { "query" : "?", "fields" : [ "name" ] } }
+    ]
+  }
+}}`
 
 | `Between`
 | `findByPriceBetween`
-| `{"bool" : {"must" : {"range" : {"price" : {"from" :
-                                        ?,"to" : ?,"include_lower" : true,"include_upper" : true}}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+    {"range" : {"price" : {"from" : ?, "to" : ?, "include_lower" : true, "include_upper" : true } } }
+    ]
+  }
+}}`
+
+| `LessThan`
+| `findByPriceLessThan`
+| `{ "query" : {
+"bool" : {
+"must" : [
+    {"range" : {"price" : {"from" : null, "to" : ?, "include_lower" : true, "include_upper" : false } } }
+    ]
+  }
+}}`
 
 | `LessThanEqual`
-| `findByPriceLessThan`
-| `{"bool" : {"must" : {"range" : {"price" : {"from" :
-                                        null,"to" : ?,"include_lower" : true,"include_upper" :
-                                        true}}}}}`
+| `findByPriceLessThanEqual`
+| `{ "query" : {
+"bool" : {
+"must" : [
+    {"range" : {"price" : {"from" : null, "to" : ?, "include_lower" : true, "include_upper" : true } } }
+    ]
+  }
+}}`
+
+| `GreaterThan`
+| `findByPriceGreaterThan`
+| `{ "query" : {
+"bool" : {
+"must" : [
+    {"range" : {"price" : {"from" : ?, "to" : null, "include_lower" : false, "include_upper" : true } } }
+    ]
+  }
+}}`
+
 
 | `GreaterThanEqual`
 | `findByPriceGreaterThan`
-| `{"bool" : {"must" : {"range" : {"price" : {"from" :
-                                        ?,"to" : null,"include_lower" : true,"include_upper" :
-                                        true}}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+    {"range" : {"price" : {"from" : ?, "to" : null, "include_lower" : true, "include_upper" : true } } }
+    ]
+  }
+}}`
 
 | `Before`
 | `findByPriceBefore`
-| `{"bool" : {"must" : {"range" : {"price" : {"from" :
-                                        null,"to" : ?,"include_lower" : true,"include_upper" :
-                                        true}}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+    {"range" : {"price" : {"from" : null, "to" : ?, "include_lower" : true, "include_upper" : true } } }
+    ]
+  }
+}}`
 
 | `After`
 | `findByPriceAfter`
-| `{"bool" : {"must" : {"range" : {"price" : {"from" :
-                                        ?,"to" : null,"include_lower" : true,"include_upper" :
-                                        true}}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+    {"range" : {"price" : {"from" : ?, "to" : null, "include_lower" : true, "include_upper" : true } } }
+    ]
+  }
+}}`
 
 | `Like`
 | `findByNameLike`
-| `{"bool" : {"must" : {"field" : {"name" : {"query" :
-                                        "?*","analyze_wildcard" : true}}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      { "query_string" : { "query" : "?*", "fields" : [ "name" ] }, "analyze_wildcard": true }
+    ]
+  }
+}}`
 
 | `StartingWith`
 | `findByNameStartingWith`
-| `{"bool" : {"must" : {"field" : {"name" : {"query" :
-                                        "?*","analyze_wildcard" : true}}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      { "query_string" : { "query" : "?*", "fields" : [ "name" ] }, "analyze_wildcard": true }
+    ]
+  }
+}}`
 
 | `EndingWith`
 | `findByNameEndingWith`
-| `{"bool" : {"must" : {"field" : {"name" : {"query" :
-                                        "*?","analyze_wildcard" : true}}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      { "query_string" : { "query" : "*?", "fields" : [ "name" ] }, "analyze_wildcard": true }
+    ]
+  }
+}}`
 
 | `Contains/Containing`
 | `findByNameContaining`
-| `{"bool" : {"must" : {"field" : {"name" : {"query" :
-                                        "*?*","analyze_wildcard" : true}}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      { "query_string" : { "query" : "\*?*", "fields" : [ "name" ] }, "analyze_wildcard": true }
+    ]
+  }
+}}`
 
 | `In`
 | `findByNameIn(Collection<String>names)`
-| `{"bool" : {"must" : {"bool" : {"should" : [ {"field" :
-                                        {"name" : "?"}}, {"field" : {"name" : "?"}} ]}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      {"bool" : {"must" : [
+            {"terms" : {"name" : ["?","?"]}}
+          ]
+        }
+      }
+    ]
+  }
+}}`
 
 | `NotIn`
 | `findByNameNotIn(Collection<String>names)`
-| `{"bool" : {"must_not" : {"bool" : {"should" : {"field" :
-                                        {"name" : "?"}}}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      {"bool" : {"must_not" : [
+            {"terms" : {"name" : ["?","?"]}}
+          ]
+        }
+      }
+    ]
+  }
+}}`
 
 | `Near`
 | `findByStoreNear`
@@ -129,18 +235,45 @@ A list of supported keywords for Elasticsearch is shown below.
 
 | `True`
 | `findByAvailableTrue`
-| `{"bool" : {"must" : {"field" : {"available" : true}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      { "query_string" : { "query" : "true", "fields" : [ "available" ] } }
+    ]
+  }
+}}`
 
 | `False`
 | `findByAvailableFalse`
-| `{"bool" : {"must" : {"field" : {"available" : false}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      { "query_string" : { "query" : "false", "fields" : [ "available" ] } }
+    ]
+  }
+}}`
 
 | `OrderBy`
 | `findByAvailableTrueOrderByNameDesc`
-| `{"sort" : [{ "name" : {"order" : "desc"} }],"bool" :
-                                        {"must" : {"field" : {"available" : true}}}}`
+| `{ "query" : {
+"bool" : {
+"must" : [
+      { "query_string" : { "query" : "true", "fields" : [ "available" ] } }
+    ]
+  }
+}, "sort":[{"name":{"order":"desc"}}]
+}`
+
 |===
 
+== Method return types
+
+Repository methods can be defined to have the following return types for returning multiple Elements:
+
+* `List<T>`
+* `Stream<T>`
+* `AggregatedPage<T>`
+
 [[elasticsearch.query-methods.at-query]]
 == Using @Query Annotation
 
@@ -149,8 +282,21 @@ A list of supported keywords for Elasticsearch is shown below.
 [source,java]
 ----
 interface BookRepository extends ElasticsearchRepository<Book, String> {
-    @Query("{\"bool\" : {\"must\" : {\"field\" : {\"name\" : \"?0\"}}}}")
+    @Query("{\"match\": {\"name\": {\"query\": \"?0\"}}}")
     Page<Book> findByName(String name,Pageable pageable);
 }
 ----
+The String that is set as the annotation argument must be a valid Elasticsearch JSON query. It will be sent to Easticsearch as value of the query element; if for example the function is called with the parameter _John_, it would produce the following query body:
+[source,json]
+----
+{
+  "query": {
+    "match": {
+      "name": {
+        "query": "John"
+      }
+    }
+  }
+}
+----
 ====

src/main/java/org/springframework/data/elasticsearch/ElasticsearchException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/NoSuchIndexException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 the original author or authors.
+ * Copyright 2019-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/CompletionField.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/DateFormat.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/Document.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/Field.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/FieldType.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/GeoPointField.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/InnerField.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/Mapping.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/MultiField.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/Parent.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/Query.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/annotations/Setting.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/ClientConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,16 +20,21 @@ import java.net.SocketAddress;
 import java.time.Duration;
 import java.util.List;
 import java.util.Optional;
+import java.util.function.Function;
 
+import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.SSLContext;
 
 import org.springframework.http.HttpHeaders;
+import org.springframework.web.reactive.function.client.WebClient;
 
 /**
  * Configuration interface exposing common client configuration properties for Elasticsearch clients.
  *
  * @author Mark Paluch
  * @author Peter-Josef Meisch
+ * @author Huw Ayling-Miller
+ * @author Henrique Amaral
  * @since 3.2
  */
 public interface ClientConfiguration {
@@ -118,6 +123,13 @@ public interface ClientConfiguration {
 	 */
 	Optional<SSLContext> getSslContext();
 
+	/**
+	 * Returns the {@link HostnameVerifier} to use. Can be {@link Optional#empty()} if unconfigured.
+	 *
+	 * @return the {@link HostnameVerifier} to use. Can be {@link Optional#empty()} if unconfigured.
+	 */
+	Optional<HostnameVerifier> getHostNameVerifier();
+
 	/**
 	 * Returns the {@link java.time.Duration connect timeout}.
 	 *
@@ -135,6 +147,27 @@ public interface ClientConfiguration {
 	 */
 	Duration getSocketTimeout();
 
+	/**
+	 * Returns the path prefix that should be prepended to HTTP(s) requests for Elasticsearch behind a proxy.
+	 *
+	 * @return the path prefix.
+	 * @since 3.2.4
+	 */
+	String getPathPrefix();
+
+	/**
+	 * returns an optionally set proxy in the form host:port
+	 *
+	 * @return the optional proxy
+	 * @since 3.2.4
+	 */
+	Optional<String> getProxy();
+
+	/**
+	 * @return the function for configuring a WebClient.
+	 */
+	Function<WebClient, WebClient> getWebClientConfigurer();
+
 	/**
 	 * @author Christoph Strobl
 	 */
@@ -201,6 +234,16 @@ public interface ClientConfiguration {
 		 * @return the {@link TerminalClientConfigurationBuilder}.
 		 */
 		TerminalClientConfigurationBuilder usingSsl(SSLContext sslContext);
+
+		/**
+		 * Connect via {@literal https} using the givens {@link SSLContext} and HostnameVerifier {@link HostnameVerifier}
+		 * .<br />
+		 * <strong>NOTE</strong> You need to leave out the protocol in
+		 * {@link ClientConfigurationBuilderWithRequiredEndpoint#connectedTo(String)}.
+		 *
+		 * @return the {@link TerminalClientConfigurationBuilder}.
+		 */
+		TerminalClientConfigurationBuilder usingSsl(SSLContext sslContext, HostnameVerifier hostnameVerifier);
 	}
 
 	/**
@@ -267,6 +310,29 @@ public interface ClientConfiguration {
 		 */
 		TerminalClientConfigurationBuilder withBasicAuth(String username, String password);
 
+		/**
+		 * Configure the path prefix that will be prepended to any HTTP(s) requests
+		 *
+		 * @param pathPrefix the pathPrefix.
+		 * @return the {@link TerminalClientConfigurationBuilder}
+		 * @since 3.2.4
+		 */
+		TerminalClientConfigurationBuilder withPathPrefix(String pathPrefix);
+
+		/**
+		 * @param proxy a proxy formatted as String {@literal host:port}.
+		 * @return the {@link TerminalClientConfigurationBuilder}.
+		 */
+		TerminalClientConfigurationBuilder withProxy(String proxy);
+
+		/**
+		 * set customization hook in case of a reactive configuration
+		 * 
+		 * @param webClientConfigurer function to configure the WebClient
+		 * @return the {@link TerminalClientConfigurationBuilder}.
+		 */
+		TerminalClientConfigurationBuilder withWebClientConfigurer(Function<WebClient, WebClient> webClientConfigurer);
+
 		/**
 		 * Build the {@link ClientConfiguration} object.
 		 *

src/main/java/org/springframework/data/elasticsearch/client/ClientConfigurationBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,8 +20,10 @@ import java.time.Duration;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 
+import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.SSLContext;
 
 import org.springframework.data.elasticsearch.client.ClientConfiguration.ClientConfigurationBuilderWithRequiredEndpoint;
@@ -30,6 +32,7 @@ import org.springframework.data.elasticsearch.client.ClientConfiguration.Termina
 import org.springframework.http.HttpHeaders;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
+import org.springframework.web.reactive.function.client.WebClient;
 
 /**
  * Default builder implementation for {@link ClientConfiguration}.
@@ -37,6 +40,8 @@ import org.springframework.util.Assert;
  * @author Christoph Strobl
  * @author Mark Paluch
  * @author Peter-Josef Meisch
+ * @author Huw Ayling-Miller
+ * @author Henrique Amaral
  * @since 3.2
  */
 class ClientConfigurationBuilder
@@ -46,10 +51,14 @@ class ClientConfigurationBuilder
 	private HttpHeaders headers = HttpHeaders.EMPTY;
 	private boolean useSsl;
 	private @Nullable SSLContext sslContext;
+	private @Nullable HostnameVerifier hostnameVerifier;
 	private Duration connectTimeout = Duration.ofSeconds(10);
 	private Duration soTimeout = Duration.ofSeconds(5);
 	private String username;
 	private String password;
+	private String pathPrefix;
+	private String proxy;
+	private Function<WebClient, WebClient> webClientConfigurer;
 
 	/*
 	 * (non-Javadoc)
@@ -78,6 +87,13 @@ class ClientConfigurationBuilder
 		return this;
 	}
 
+	@Override
+	public MaybeSecureClientConfigurationBuilder withProxy(String proxy) {
+		Assert.hasLength(proxy, "proxy must not be null or empty");
+		this.proxy = proxy;
+		return this;
+	}
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration.MaybeSecureClientConfigurationBuilder#usingSsl()
@@ -103,6 +119,22 @@ class ClientConfigurationBuilder
 		return this;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration.MaybeSecureClientConfigurationBuilder#usingSsl(javax.net.ssl.SSLContext, javax.net.ssl.HostnameVerifier)
+	 */
+	@Override
+	public TerminalClientConfigurationBuilder usingSsl(SSLContext sslContext, HostnameVerifier hostnameVerifier) {
+
+		Assert.notNull(sslContext, "SSL Context must not be null");
+		Assert.notNull(hostnameVerifier, "Host Name Verifier must not be null");
+
+		this.useSsl = true;
+		this.sslContext = sslContext;
+		this.hostnameVerifier = hostnameVerifier;
+		return this;
+	}
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration.TerminalClientConfigurationBuilder#withDefaultHeaders(org.springframework.http.HttpHeaders)
@@ -156,6 +188,22 @@ class ClientConfigurationBuilder
 		return this;
 	}
 
+	@Override
+	public TerminalClientConfigurationBuilder withPathPrefix(String pathPrefix) {
+		this.pathPrefix = pathPrefix;
+
+		return this;
+	}
+
+	@Override
+	public TerminalClientConfigurationBuilder withWebClientConfigurer(Function<WebClient, WebClient> webClientConfigurer) {
+
+		Assert.notNull(webClientConfigurer, "webClientConfigurer must not be null");
+
+		this.webClientConfigurer = webClientConfigurer;
+		return this;
+	}
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration.ClientConfigurationBuilderWithOptionalDefaultHeaders#build()
@@ -170,8 +218,8 @@ class ClientConfigurationBuilder
 			headers.setBasicAuth(username, password);
 		}
 
-		return new DefaultClientConfiguration(this.hosts, this.headers, this.useSsl, this.sslContext, this.soTimeout,
-				this.connectTimeout);
+		return new DefaultClientConfiguration(hosts, headers, useSsl, sslContext, soTimeout, connectTimeout, pathPrefix,
+				hostnameVerifier, proxy, webClientConfigurer);
 	}
 
 	private static InetSocketAddress parse(String hostAndPort) {

src/main/java/org/springframework/data/elasticsearch/client/ClientLogger.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/ClusterNodes.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/DefaultClientConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,17 +21,22 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
+import java.util.function.Function;
 
+import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.SSLContext;
 
 import org.springframework.http.HttpHeaders;
 import org.springframework.lang.Nullable;
+import org.springframework.web.reactive.function.client.WebClient;
 
 /**
  * Default {@link ClientConfiguration} implementation.
  *
  * @author Mark Paluch
  * @author Christoph Strobl
+ * @author Huw Ayling-Miller
+ * @author Peter-Josef Meisch
  * @since 3.2
  */
 class DefaultClientConfiguration implements ClientConfiguration {
@@ -42,9 +47,14 @@ class DefaultClientConfiguration implements ClientConfiguration {
 	private final @Nullable SSLContext sslContext;
 	private final Duration soTimeout;
 	private final Duration connectTimeout;
+	private final String pathPrefix;
+	private final @Nullable HostnameVerifier hostnameVerifier;
+	private final String proxy;
+	private final Function<WebClient, WebClient> webClientConfigurer;
 
 	DefaultClientConfiguration(List<InetSocketAddress> hosts, HttpHeaders headers, boolean useSsl,
-			@Nullable SSLContext sslContext, Duration soTimeout, Duration connectTimeout) {
+			@Nullable SSLContext sslContext, Duration soTimeout, Duration connectTimeout, @Nullable String pathPrefix,
+			@Nullable HostnameVerifier hostnameVerifier, String proxy, Function<WebClient, WebClient> webClientConfigurer) {
 
 		this.hosts = Collections.unmodifiableList(new ArrayList<>(hosts));
 		this.headers = new HttpHeaders(headers);
@@ -52,60 +62,59 @@ class DefaultClientConfiguration implements ClientConfiguration {
 		this.sslContext = sslContext;
 		this.soTimeout = soTimeout;
 		this.connectTimeout = connectTimeout;
+		this.pathPrefix = pathPrefix;
+		this.hostnameVerifier = hostnameVerifier;
+		this.proxy = proxy;
+		this.webClientConfigurer = webClientConfigurer;
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration#getEndpoints()
-	 */
 	@Override
 	public List<InetSocketAddress> getEndpoints() {
 		return this.hosts;
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration#getDefaultHeaders()
-	 */
 	@Override
 	public HttpHeaders getDefaultHeaders() {
 		return this.headers;
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration#useSsl()
-	 */
 	@Override
 	public boolean useSsl() {
 		return this.useSsl;
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration#getSslContext()
-	 */
 	@Override
 	public Optional<SSLContext> getSslContext() {
 		return Optional.ofNullable(this.sslContext);
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration#getConnectTimeout()
-	 */
+	@Override
+	public Optional<HostnameVerifier> getHostNameVerifier() {
+		return Optional.ofNullable(this.hostnameVerifier);
+	}
+
 	@Override
 	public Duration getConnectTimeout() {
 		return this.connectTimeout;
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.ClientConfiguration#getSocketTimeout()
-	 */
 	@Override
 	public Duration getSocketTimeout() {
 		return this.soTimeout;
 	}
 
+	@Override
+	public String getPathPrefix() {
+		return this.pathPrefix;
+	}
+
+	@Override
+	public Optional<String> getProxy() {
+		return Optional.ofNullable(proxy);
+	}
+
+	@Override
+	public Function<WebClient, WebClient> getWebClientConfigurer() {
+		return webClientConfigurer != null ? webClientConfigurer : Function.identity();
+	}
 }

src/main/java/org/springframework/data/elasticsearch/client/ElasticsearchHost.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/InetSocketAddressParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/NoReachableHostException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/NodeClientFactoryBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 the original author or authors.
+ * Copyright 2015-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/RestClientFactoryBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/RestClients.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,6 +24,7 @@ import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
+import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.SSLContext;
 
 import org.apache.http.Header;
@@ -52,6 +53,9 @@ import org.springframework.util.Assert;
  *
  * @author Christoph Strobl
  * @author Mark Paluch
+ * @author Huw Ayling-Miller
+ * @author Henrique Amaral
+ * @author Peter-Josef Meisch
  * @since 3.2
  */
 public final class RestClients {
@@ -75,6 +79,11 @@ public final class RestClients {
 		HttpHost[] httpHosts = formattedHosts(clientConfiguration.getEndpoints(), clientConfiguration.useSsl()).stream()
 				.map(HttpHost::create).toArray(HttpHost[]::new);
 		RestClientBuilder builder = RestClient.builder(httpHosts);
+
+		if (clientConfiguration.getPathPrefix() != null) {
+			builder.setPathPrefix(clientConfiguration.getPathPrefix());
+		}
+
 		HttpHeaders headers = clientConfiguration.getDefaultHeaders();
 
 		if (!headers.isEmpty()) {
@@ -87,7 +96,9 @@ public final class RestClients {
 		builder.setHttpClientConfigCallback(clientBuilder -> {
 
 			Optional<SSLContext> sslContext = clientConfiguration.getSslContext();
+			Optional<HostnameVerifier> hostNameVerifier = clientConfiguration.getHostNameVerifier();
 			sslContext.ifPresent(clientBuilder::setSSLContext);
+			hostNameVerifier.ifPresent(clientBuilder::setSSLHostnameVerifier);
 
 			if (ClientLogger.isEnabled()) {
 
@@ -114,6 +125,8 @@ public final class RestClients {
 
 			clientBuilder.setDefaultRequestConfig(requestConfigBuilder.build());
 
+			clientConfiguration.getProxy().map(HttpHost::create).ifPresent(clientBuilder::setProxy);
+
 			return clientBuilder;
 		});
 
@@ -122,7 +135,8 @@ public final class RestClients {
 	}
 
 	private static List<String> formattedHosts(List<InetSocketAddress> hosts, boolean useSsl) {
-		return hosts.stream().map(it -> (useSsl ? "https" : "http") + "://" + it).collect(Collectors.toList());
+		return hosts.stream().map(it -> (useSsl ? "https" : "http") + "://" + it.getHostString() + ':' + it.getPort())
+			.collect(Collectors.toList());
 	}
 
 	/**

src/main/java/org/springframework/data/elasticsearch/client/TransportClientFactoryBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/reactive/DefaultReactiveElasticsearchClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,7 +16,9 @@
 package org.springframework.data.elasticsearch.client.reactive;
 
 import io.netty.channel.ChannelOption;
+import io.netty.handler.ssl.ApplicationProtocolConfig;
 import io.netty.handler.ssl.ClientAuth;
+import io.netty.handler.ssl.IdentityCipherSuiteFilter;
 import io.netty.handler.ssl.JdkSslContext;
 import io.netty.handler.timeout.ReadTimeoutHandler;
 import io.netty.handler.timeout.WriteTimeoutHandler;
@@ -45,9 +47,9 @@ import java.util.function.Function;
 import javax.net.ssl.SSLContext;
 
 import org.apache.http.util.EntityUtils;
+import org.elasticsearch.ElasticsearchException;
 import org.elasticsearch.ElasticsearchStatusException;
 import org.elasticsearch.action.ActionRequest;
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.action.admin.indices.close.CloseIndexRequest;
 import org.elasticsearch.action.admin.indices.create.CreateIndexRequest;
 import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
@@ -58,6 +60,8 @@ import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
 import org.elasticsearch.action.admin.indices.open.OpenIndexRequest;
 import org.elasticsearch.action.admin.indices.refresh.RefreshRequest;
 import org.elasticsearch.action.admin.indices.refresh.RefreshResponse;
+import org.elasticsearch.action.bulk.BulkRequest;
+import org.elasticsearch.action.bulk.BulkResponse;
 import org.elasticsearch.action.delete.DeleteRequest;
 import org.elasticsearch.action.delete.DeleteResponse;
 import org.elasticsearch.action.get.GetRequest;
@@ -77,6 +81,8 @@ import org.elasticsearch.action.support.master.AcknowledgedResponse;
 import org.elasticsearch.action.update.UpdateRequest;
 import org.elasticsearch.action.update.UpdateResponse;
 import org.elasticsearch.client.Request;
+import org.elasticsearch.client.core.CountRequest;
+import org.elasticsearch.client.core.CountResponse;
 import org.elasticsearch.common.unit.TimeValue;
 import org.elasticsearch.common.xcontent.DeprecationHandler;
 import org.elasticsearch.common.xcontent.NamedXContentRegistry;
@@ -91,7 +97,6 @@ import org.elasticsearch.search.Scroll;
 import org.elasticsearch.search.SearchHit;
 import org.elasticsearch.search.SearchHits;
 import org.reactivestreams.Publisher;
-import org.springframework.data.elasticsearch.ElasticsearchException;
 import org.springframework.data.elasticsearch.client.ClientConfiguration;
 import org.springframework.data.elasticsearch.client.ClientLogger;
 import org.springframework.data.elasticsearch.client.ElasticsearchHost;
@@ -110,7 +115,6 @@ import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 import org.springframework.util.ReflectionUtils;
 import org.springframework.util.StringUtils;
-import org.springframework.web.client.HttpServerErrorException;
 import org.springframework.web.reactive.function.BodyExtractors;
 import org.springframework.web.reactive.function.client.ClientRequest;
 import org.springframework.web.reactive.function.client.ClientResponse;
@@ -122,6 +126,9 @@ import org.springframework.web.reactive.function.client.WebClient.RequestBodySpe
  *
  * @author Christoph Strobl
  * @author Mark Paluch
+ * @author Peter-Josef Meisch
+ * @author Huw Ayling-Miller
+ * @author Henrique Amaral
  * @since 3.2
  * @see ClientConfiguration
  * @see ReactiveRestClients
@@ -193,7 +200,6 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 		}
 
 		if (!soTimeout.isNegative()) {
-
 			tcpClient = tcpClient.doOnConnected(connection -> connection //
 					.addHandlerLast(new ReadTimeoutHandler(soTimeout.toMillis(), TimeUnit.MILLISECONDS))
 					.addHandlerLast(new WriteTimeoutHandler(soTimeout.toMillis(), TimeUnit.MILLISECONDS)));
@@ -204,11 +210,16 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 
 		if (clientConfiguration.useSsl()) {
 
-			httpClient = httpClient.secure(sslConfig -> {
+			Optional<SSLContext> sslContext = clientConfiguration.getSslContext();
 
-				Optional<SSLContext> sslContext = clientConfiguration.getSslContext();
-				sslContext.ifPresent(it -> sslConfig.sslContext(new JdkSslContext(it, true, ClientAuth.NONE)));
-			});
+			if (sslContext.isPresent()) {
+				httpClient = httpClient.secure(sslContextSpec -> {
+					sslContextSpec.sslContext(new JdkSslContext(sslContext.get(), true, null, IdentityCipherSuiteFilter.INSTANCE,
+							ApplicationProtocolConfig.DISABLED, ClientAuth.NONE, null, false));
+				});
+			} else {
+				httpClient = httpClient.secure();
+			}
 
 			scheme = "https";
 		}
@@ -216,7 +227,13 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 		ReactorClientHttpConnector connector = new ReactorClientHttpConnector(httpClient);
 		WebClientProvider provider = WebClientProvider.create(scheme, connector);
 
-		return provider.withDefaultHeaders(clientConfiguration.getDefaultHeaders());
+		if (clientConfiguration.getPathPrefix() != null) {
+			provider = provider.withPathPrefix(clientConfiguration.getPathPrefix());
+		}
+
+		provider = provider.withDefaultHeaders(clientConfiguration.getDefaultHeaders()) //
+				.withWebClientConfigurer(clientConfiguration.getWebClientConfigurer());
+		return provider;
 	}
 
 	/*
@@ -319,6 +336,17 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 				.publishNext();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.elasticsearch.client.reactive.ReactiveElasticsearchClient#count(org.springframework.http.HttpHeaders, org.elasticsearch.action.search.SearchRequest)
+	 */
+	@Override
+	public Mono<Long> count(HttpHeaders headers, CountRequest countRequest) {
+		return sendRequest(countRequest, RequestCreator.count(), CountResponse.class, headers) //
+				.map(CountResponse::getCount) //
+				.next();
+	}
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.elasticsearch.client.reactive.ReactiveElasticsearchClient#ping(org.springframework.http.HttpHeaders, org.elasticsearch.action.search.SearchRequest)
@@ -417,12 +445,23 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 	 * (non-Javadoc)
 	 * @see org.springframework.data.elasticsearch.client.reactive.ReactiveElasticsearchClient#ping(org.springframework.http.HttpHeaders, org.elasticsearch.index.reindex.DeleteByQueryRequest)
 	 */
+	@Override
 	public Mono<BulkByScrollResponse> deleteBy(HttpHeaders headers, DeleteByQueryRequest deleteRequest) {
 
 		return sendRequest(deleteRequest, RequestCreator.deleteByQuery(), BulkByScrollResponse.class, headers) //
 				.publishNext();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.elasticsearch.client.reactive.ReactiveElasticsearchClient#bulk(org.springframework.http.HttpHeaders, org.elasticsearch.action.bulk.BulkRequest)
+	 */
+	@Override
+	public Mono<BulkResponse> bulk(HttpHeaders headers, BulkRequest bulkRequest) {
+		return sendRequest(bulkRequest, RequestCreator.bulk(), BulkResponse.class, headers) //
+				.publishNext();
+	}
+
 	// --> INDICES
 
 	/*
@@ -553,13 +592,12 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 
 	// -->
 
-	private <Req extends ActionRequest, Resp extends ActionResponse> Flux<Resp> sendRequest(Req request,
-			Function<Req, Request> converter, Class<Resp> responseType, HttpHeaders headers) {
+	private <Req extends ActionRequest, Resp> Flux<Resp> sendRequest(Req request, Function<Req, Request> converter,
+			Class<Resp> responseType, HttpHeaders headers) {
 		return sendRequest(converter.apply(request), responseType, headers);
 	}
 
-	private <AR extends ActionResponse> Flux<AR> sendRequest(Request request, Class<AR> responseType,
-			HttpHeaders headers) {
+	private <Resp> Flux<Resp> sendRequest(Request request, Class<Resp> responseType, HttpHeaders headers) {
 
 		String logId = ClientLogger.newLogId();
 
@@ -641,6 +679,12 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 			return handleServerError(request, response);
 		}
 
+		if (response.statusCode().is4xxClientError()) {
+
+			ClientLogger.logRawResponse(logId, response.statusCode());
+			return handleClientError(logId, request, response, responseType);
+		}
+
 		return response.body(BodyExtractors.toMono(byte[].class)) //
 				.map(it -> new String(it, StandardCharsets.UTF_8)) //
 				.doOnNext(it -> ClientLogger.logResponse(logId, response.statusCode(), it)) //
@@ -677,13 +721,68 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 				.createParser(NamedXContentRegistry.EMPTY, DeprecationHandler.THROW_UNSUPPORTED_OPERATION, content);
 	}
 
-	private static <T> Publisher<? extends T> handleServerError(Request request, ClientResponse response) {
+	private <T> Publisher<? extends T> handleServerError(Request request, ClientResponse response) {
 
-		return Mono.error(
-				new HttpServerErrorException(response.statusCode(), String.format("%s request to %s returned error code %s.",
-						request.getMethod(), request.getEndpoint(), response.statusCode().value())));
+		RestStatus status = RestStatus.fromCode(response.statusCode().value());
+
+		return Mono.error(new ElasticsearchStatusException(String.format("%s request to %s returned error code %s.",
+				request.getMethod(), request.getEndpoint(), response.statusCode().value()), status));
 	}
 
+	private <T> Publisher<? extends T> handleClientError(String logId, Request request, ClientResponse response,
+			Class<T> responseType) {
+
+		return response.body(BodyExtractors.toMono(byte[].class)) //
+				.map(bytes -> new String(bytes, StandardCharsets.UTF_8)) //
+				.flatMap(content -> {
+					String mediaType = response.headers().contentType().map(MediaType::toString)
+							.orElse(XContentType.JSON.mediaType());
+					RestStatus status = RestStatus.fromCode(response.statusCode().value());
+					try {
+						ElasticsearchException exception = getElasticsearchException(response, content, mediaType);
+						if (exception != null) {
+							StringBuilder sb = new StringBuilder();
+							buildExceptionMessages(sb, exception);
+							return Mono.error(new ElasticsearchStatusException(sb.toString(), status, exception));
+						}
+					} catch (Exception e) {
+						return Mono.error(new ElasticsearchStatusException(content, status));
+					}
+					return Mono.just(content);
+				}).doOnNext(it -> ClientLogger.logResponse(logId, response.statusCode(), it)) //
+				.flatMap(content -> doDecode(response, responseType, content));
+	}
+
+	// region ElasticsearchException helper
+	@Nullable
+	private ElasticsearchException getElasticsearchException(ClientResponse response, String content, String mediaType)
+			throws IOException {
+
+		XContentParser parser = createParser(mediaType, content);
+		// we have a JSON object with an error and a status field
+		XContentParser.Token token = parser.nextToken(); // Skip START_OBJECT
+
+		do {
+			token = parser.nextToken();
+
+			if (parser.currentName().equals("error")) {
+				return ElasticsearchException.failureFromXContent(parser);
+			}
+		} while (token == XContentParser.Token.FIELD_NAME);
+		return null;
+	}
+
+	private static void buildExceptionMessages(StringBuilder sb, Throwable t) {
+
+		sb.append(t.getMessage());
+		for (Throwable throwable : t.getSuppressed()) {
+			sb.append(", ");
+			buildExceptionMessages(sb, throwable);
+		}
+	}
+	// endregion
+
+	// region internal classes
 	static class RequestCreator {
 
 		static Function<SearchRequest, Request> search() {
@@ -737,7 +836,19 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 				try {
 					return RequestConverters.deleteByQuery(request);
 				} catch (IOException e) {
-					throw new ElasticsearchException("Could not parse request", e);
+					throw new org.springframework.data.elasticsearch.ElasticsearchException("Could not parse request", e);
+				}
+			};
+		}
+
+		static Function<BulkRequest, Request> bulk() {
+
+			return request -> {
+
+				try {
+					return RequestConverters.bulk(request);
+				} catch (IOException e) {
+					throw new org.springframework.data.elasticsearch.ElasticsearchException("Could not parse request", e);
 				}
 			};
 		}
@@ -776,6 +887,10 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 			return RequestConverters::flushIndex;
 		}
 
+		static Function<CountRequest, Request> count() {
+			return RequestConverters::count;
+		}
+
 	}
 
 	/**
@@ -837,4 +952,5 @@ public class DefaultReactiveElasticsearchClient implements ReactiveElasticsearch
 			}
 		}
 	}
+	// endregion
 }

src/main/java/org/springframework/data/elasticsearch/client/reactive/DefaultWebClientProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,6 +19,7 @@ import java.net.InetSocketAddress;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.function.Consumer;
+import java.util.function.Function;
 
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.client.reactive.ClientHttpConnector;
@@ -32,6 +33,8 @@ import org.springframework.web.reactive.function.client.WebClient.Builder;
  *
  * @author Mark Paluch
  * @author Christoph Strobl
+ * @author Huw Ayling-Miller
+ * @author Peter-Josef Meisch
  * @since 3.2
  */
 class DefaultWebClientProvider implements WebClientProvider {
@@ -42,6 +45,8 @@ class DefaultWebClientProvider implements WebClientProvider {
 	private final @Nullable ClientHttpConnector connector;
 	private final Consumer<Throwable> errorListener;
 	private final HttpHeaders headers;
+	private final String pathPrefix;
+	private final Function<WebClient, WebClient> webClientConfigurer;
 
 	/**
 	 * Create new {@link DefaultWebClientProvider} with empty {@link HttpHeaders} and no-op {@literal error listener}.
@@ -50,35 +55,38 @@ class DefaultWebClientProvider implements WebClientProvider {
 	 * @param connector can be {@literal null}.
 	 */
 	DefaultWebClientProvider(String scheme, @Nullable ClientHttpConnector connector) {
-		this(scheme, connector, e -> {}, HttpHeaders.EMPTY);
+		this(scheme, connector, e -> {}, HttpHeaders.EMPTY, null, Function.identity());
 	}
 
 	/**
 	 * Create new {@link DefaultWebClientProvider} with empty {@link HttpHeaders} and no-op {@literal error listener}.
-	 * 
+	 *
 	 * @param scheme must not be {@literal null}.
-	 * @param connector can be {@literal null}.
-	 * @param errorListener must not be {@literal null}.
-	 * @param headers must not be {@literal null}.
+     * @param connector can be {@literal null}.
+     * @param errorListener must not be {@literal null}.
+     * @param headers must not be {@literal null}.
+     * @param pathPrefix can be {@literal null}
+     * @param webClientConfigurer must not be {@literal null}.
 	 */
 	private DefaultWebClientProvider(String scheme, @Nullable ClientHttpConnector connector,
-			Consumer<Throwable> errorListener, HttpHeaders headers) {
+			Consumer<Throwable> errorListener, HttpHeaders headers, @Nullable String pathPrefix,
+			Function<WebClient, WebClient> webClientConfigurer) {
 
 		Assert.notNull(scheme, "Scheme must not be null! A common scheme would be 'http'.");
-		Assert.notNull(errorListener, "ErrorListener must not be null! You may want use a no-op one 'e -> {}' instead.");
+		Assert.notNull(errorListener, "errorListener must not be null! You may want use a no-op one 'e -> {}' instead.");
 		Assert.notNull(headers, "headers must not be null! Think about using 'HttpHeaders.EMPTY' as an alternative.");
+		Assert.notNull(webClientConfigurer,
+				"webClientConfigurer must not be null! You may want use a no-op one 'Function.identity()' instead.");
 
 		this.cachedClients = new ConcurrentHashMap<>();
 		this.scheme = scheme;
 		this.connector = connector;
 		this.errorListener = errorListener;
 		this.headers = headers;
+		this.pathPrefix = pathPrefix;
+		this.webClientConfigurer = webClientConfigurer;
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.reactive.WebClientProvider#get(java.net.InetSocketAddress)
-	 */
 	@Override
 	public WebClient get(InetSocketAddress endpoint) {
 
@@ -87,19 +95,21 @@ class DefaultWebClientProvider implements WebClientProvider {
 		return this.cachedClients.computeIfAbsent(endpoint, this::createWebClientForSocketAddress);
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.reactive.WebClientProvider#getDefaultHeaders()
-	 */
 	@Override
 	public HttpHeaders getDefaultHeaders() {
 		return headers;
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.reactive.WebClientProvider#withDefaultHeaders(org.springframework.http.HttpHeaders)
-	 */
+	@Override
+	public Consumer<Throwable> getErrorListener() {
+		return this.errorListener;
+	}
+
+	@Override
+	public String getPathPrefix() {
+		return pathPrefix;
+	}
+
 	@Override
 	public WebClientProvider withDefaultHeaders(HttpHeaders headers) {
 
@@ -109,31 +119,33 @@ class DefaultWebClientProvider implements WebClientProvider {
 		merged.addAll(this.headers);
 		merged.addAll(headers);
 
-		return new DefaultWebClientProvider(this.scheme, this.connector, errorListener, merged);
+		return new DefaultWebClientProvider(scheme, connector, errorListener, merged, pathPrefix, webClientConfigurer);
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.reactive.WebClientProvider#getErrorListener()
-	 */
-	@Override
-	public Consumer<Throwable> getErrorListener() {
-		return this.errorListener;
-	}
-
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.data.elasticsearch.client.reactive.WebClientProvider#withErrorListener(java.util.function.Consumer)
-	 */
 	@Override
 	public WebClientProvider withErrorListener(Consumer<Throwable> errorListener) {
 
 		Assert.notNull(errorListener, "Error listener must not be null.");
 
 		Consumer<Throwable> listener = this.errorListener.andThen(errorListener);
-		return new DefaultWebClientProvider(this.scheme, this.connector, listener, this.headers);
+		return new DefaultWebClientProvider(scheme, this.connector, listener, headers, pathPrefix, webClientConfigurer);
 	}
 
+	@Override
+	public WebClientProvider withPathPrefix(String pathPrefix) {
+		Assert.notNull(pathPrefix, "pathPrefix must not be null.");
+
+		return new DefaultWebClientProvider(this.scheme, this.connector, this.errorListener, this.headers, pathPrefix,
+				webClientConfigurer);
+	}
+
+	@Override
+	public WebClientProvider withWebClientConfigurer(Function<WebClient, WebClient> webClientConfigurer) {
+		return new DefaultWebClientProvider(scheme, connector, errorListener, headers, pathPrefix, webClientConfigurer);
+
+	}
+
+
 	protected WebClient createWebClientForSocketAddress(InetSocketAddress socketAddress) {
 
 		Builder builder = WebClient.builder().defaultHeaders(it -> it.addAll(getDefaultHeaders()));
@@ -142,7 +154,9 @@ class DefaultWebClientProvider implements WebClientProvider {
 			builder = builder.clientConnector(connector);
 		}
 
-		String baseUrl = String.format("%s://%s:%d", this.scheme, socketAddress.getHostString(), socketAddress.getPort());
-		return builder.baseUrl(baseUrl).filter((request, next) -> next.exchange(request).doOnError(errorListener)).build();
+		String baseUrl = String.format("%s://%s:%d%s", this.scheme, socketAddress.getHostString(), socketAddress.getPort(),
+				pathPrefix == null ? "" : '/' + pathPrefix);
+		WebClient webClient = builder.baseUrl(baseUrl).filter((request, next) -> next.exchange(request).doOnError(errorListener)).build();
+		return webClientConfigurer.apply(webClient);
 	}
 }

src/main/java/org/springframework/data/elasticsearch/client/reactive/HostProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/reactive/MultiNodeHostProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/reactive/RawActionResponse.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/reactive/ReactiveElasticsearchClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,6 +30,8 @@ import org.elasticsearch.action.admin.indices.get.GetIndexRequest;
 import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
 import org.elasticsearch.action.admin.indices.open.OpenIndexRequest;
 import org.elasticsearch.action.admin.indices.refresh.RefreshRequest;
+import org.elasticsearch.action.bulk.BulkRequest;
+import org.elasticsearch.action.bulk.BulkResponse;
 import org.elasticsearch.action.delete.DeleteRequest;
 import org.elasticsearch.action.delete.DeleteResponse;
 import org.elasticsearch.action.get.GetRequest;
@@ -41,11 +43,11 @@ import org.elasticsearch.action.search.SearchRequest;
 import org.elasticsearch.action.search.SearchResponse;
 import org.elasticsearch.action.update.UpdateRequest;
 import org.elasticsearch.action.update.UpdateResponse;
+import org.elasticsearch.client.core.CountRequest;
 import org.elasticsearch.index.get.GetResult;
 import org.elasticsearch.index.reindex.BulkByScrollResponse;
 import org.elasticsearch.index.reindex.DeleteByQueryRequest;
 import org.elasticsearch.search.SearchHit;
-
 import org.springframework.data.elasticsearch.client.ClientConfiguration;
 import org.springframework.data.elasticsearch.client.ElasticsearchHost;
 import org.springframework.http.HttpHeaders;
@@ -58,6 +60,8 @@ import org.springframework.web.reactive.function.client.WebClient;
  *
  * @author Christoph Strobl
  * @author Mark Paluch
+ * @author Peter-Josef Meisch
+ * @author Henrique Amaral
  * @since 3.2
  * @see ClientConfiguration
  * @see ReactiveRestClients
@@ -329,6 +333,47 @@ public interface ReactiveElasticsearchClient {
 	 */
 	Mono<DeleteResponse> delete(HttpHeaders headers, DeleteRequest deleteRequest);
 
+	/**
+	 * Execute a {@link SearchRequest} against the {@literal count} API.
+	 *
+	 * @param consumer new {@literal null}.
+	 * @see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/search-count.html">Count API on
+	 *      elastic.co</a>
+	 * @return the {@link Mono} emitting the count result.
+	 * @since 3.2.4
+	 */
+	default Mono<Long> count(Consumer<CountRequest> consumer) {
+
+		CountRequest countRequest = new CountRequest();
+		consumer.accept(countRequest);
+		return count(countRequest);
+	}
+
+	/**
+	 * Execute a {@link SearchRequest} against the {@literal count} API.
+	 *
+	 * @param countRequest must not be {@literal null}.
+	 * @see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/search-count.html">Count API on
+	 *      elastic.co</a>
+	 * @return the {@link Mono} emitting the count result.
+	 * @since 3.2.4
+	 */
+	default Mono<Long> count(CountRequest countRequest) {
+		return count(HttpHeaders.EMPTY, countRequest);
+	}
+
+	/**
+	 * Execute a {@link SearchRequest} against the {@literal count} API.
+	 *
+	 * @param headers Use {@link HttpHeaders} to provide eg. authentication data. Must not be {@literal null}.
+	 * @param countRequest must not be {@literal null}.
+	 * @see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/search-count.html">Count API on
+	 *      elastic.co</a>
+	 * @return the {@link Mono} emitting the count result.
+	 * @since 3.2.4
+	 */
+	Mono<Long> count(HttpHeaders headers, CountRequest countRequest);
+
 	/**
 	 * Execute a {@link SearchRequest} against the {@literal search} API.
 	 *
@@ -430,6 +475,44 @@ public interface ReactiveElasticsearchClient {
 	 */
 	Mono<BulkByScrollResponse> deleteBy(HttpHeaders headers, DeleteByQueryRequest deleteRequest);
 
+	/**
+	 * Execute a {@link BulkRequest} against the {@literal bulk} API.
+	 *
+	 * @param consumer never {@literal null}.
+	 * @see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html">Bulk API on
+	 *      elastic.co</a>
+	 * @return a {@link Mono} emitting the emitting operation response.
+	 */
+	default Mono<BulkResponse> bulk(Consumer<BulkRequest> consumer) {
+
+		BulkRequest request = new BulkRequest();
+		consumer.accept(request);
+		return bulk(request);
+	}
+
+	/**
+	 * Execute a {@link BulkRequest} against the {@literal bulk} API.
+	 *
+	 * @param bulkRequest must not be {@literal null}.
+	 * @see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html">Bulk API on
+	 *      elastic.co</a>
+	 * @return a {@link Mono} emitting the emitting operation response.
+	 */
+	default Mono<BulkResponse> bulk(BulkRequest bulkRequest) {
+		return bulk(HttpHeaders.EMPTY, bulkRequest);
+	}
+
+	/**
+	 * Execute a {@link BulkRequest} against the {@literal bulk} API.
+	 *
+	 * @param headers Use {@link HttpHeaders} to provide eg. authentication data. Must not be {@literal null}.
+	 * @param bulkRequest must not be {@literal null}.
+	 * @see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html">Bulk API on
+	 *      elastic.co</a>
+	 * @return a {@link Mono} emitting operation response.
+	 */
+	Mono<BulkResponse> bulk(HttpHeaders headers, BulkRequest bulkRequest);
+
 	/**
 	 * Compose the actual command/s to run against Elasticsearch using the underlying {@link WebClient connection}.
 	 * {@link #execute(ReactiveElasticsearchClientCallback) Execute} selects an active server from the available ones and

src/main/java/org/springframework/data/elasticsearch/client/reactive/ReactiveRestClients.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/reactive/RequestBodyEncodingException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/reactive/SingleNodeHostProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/client/reactive/WebClientProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@ package org.springframework.data.elasticsearch.client.reactive;
 
 import java.net.InetSocketAddress;
 import java.util.function.Consumer;
+import java.util.function.Function;
 
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.client.reactive.ClientHttpConnector;
@@ -34,6 +35,8 @@ import org.springframework.web.reactive.function.client.WebClient;
  *
  * @author Christoph Strobl
  * @author Mark Paluch
+ * @author Huw Ayling-Miller
+ * @author Peter-Josef Meisch
  * @since 3.2
  */
 public interface WebClientProvider {
@@ -96,6 +99,14 @@ public interface WebClientProvider {
 	 */
 	Consumer<Throwable> getErrorListener();
 
+	/**
+	 * Obtain the {@link String pathPrefix} to be used.
+	 *
+	 * @return the pathPrefix if set.
+	 * @since 3.2.4
+	 */
+	String getPathPrefix();
+
 	/**
 	 * Create a new instance of {@link WebClientProvider} applying the given headers by default.
 	 *
@@ -111,4 +122,21 @@ public interface WebClientProvider {
 	 * @return new instance of {@link WebClientProvider}.
 	 */
 	WebClientProvider withErrorListener(Consumer<Throwable> errorListener);
+
+	/**
+	 * Create a new instance of {@link WebClientProvider} where HTTP requests are called with the given path prefix.
+	 *
+	 * @param pathPrefix Path prefix to add to requests
+	 * @return new instance of {@link WebClientProvider}
+	 * @since 3.2.4
+	 */
+	WebClientProvider withPathPrefix(String pathPrefix);
+
+	/**
+	 * Create a new instance of {@link WebClientProvider} calling the given {@link Function} to configure the {@link WebClient}.
+	 * @param webClientConfigurer configuration function
+	 * @return new instance of {@link WebClientProvider}
+	 * @since 3.2.4
+	 */
+	WebClientProvider withWebClientConfigurer(Function<WebClient, WebClient> webClientConfigurer);
 }

src/main/java/org/springframework/data/elasticsearch/client/util/RequestConverters.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -60,6 +60,7 @@ import org.elasticsearch.action.update.UpdateRequest;
 import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Requests;
 import org.elasticsearch.client.RethrottleRequest;
+import org.elasticsearch.client.core.CountRequest;
 import org.elasticsearch.cluster.health.ClusterHealthStatus;
 import org.elasticsearch.common.Priority;
 import org.elasticsearch.common.Strings;
@@ -98,6 +99,8 @@ import org.springframework.lang.Nullable;
  * <p>
  * Only intended for internal use.
  *
+ * @author Christoph Strobl
+ * @author Peter-Josef Meisch
  * @since 3.2
  */
 public class RequestConverters {
@@ -386,6 +389,32 @@ public class RequestConverters {
 		return request;
 	}
 
+	/**
+	 * Creates a count request.
+	 *
+	 * @param countRequest the search defining the data to be counted
+	 * @return Elasticsearch count request
+	 * @since 3.2
+	 */
+	public static Request count(CountRequest countRequest) {
+		Request request = new Request(HttpMethod.POST.name(),
+				endpoint(countRequest.indices(), countRequest.types(), "_count"));
+
+		Params params = new Params(request);
+		addCountRequestParams(params, countRequest);
+
+		if (countRequest.source() != null) {
+			request.setEntity(createEntity(countRequest.source(), REQUEST_BODY_CONTENT_TYPE));
+		}
+		return request;
+	}
+
+	private static void addCountRequestParams(Params params, CountRequest countRequest) {
+		params.withRouting(countRequest.routing());
+		params.withPreference(countRequest.preference());
+		params.withIndicesOptions(countRequest.indicesOptions());
+	}
+
 	private static void addSearchRequestParams(Params params, SearchRequest searchRequest) {
 		params.putParam("typed_keys", "true");
 		params.withRouting(searchRequest.routing());

src/main/java/org/springframework/data/elasticsearch/config/AbstractElasticsearchConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/config/AbstractReactiveElasticsearchConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/config/ElasticsearchConfigurationSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/config/ElasticsearchNamespaceHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/config/NodeClientBeanDefinitionParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 the original author or authors.
+ * Copyright 2015-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/config/RestClientBeanDefinitionParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/config/TransportClientBeanDefinitionParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/AbstractElasticsearchTemplate.java

@@ -15,6 +15,8 @@ import org.springframework.util.StringUtils;
  */
 public abstract class AbstractElasticsearchTemplate {
 
+	static final Integer INDEX_MAX_RESULT_WINDOW = 10_000;
+
 	private static final Logger LOGGER = LoggerFactory.getLogger(AbstractElasticsearchTemplate.class);
 
 	protected ElasticsearchConverter elasticsearchConverter;

src/main/java/org/springframework/data/elasticsearch/core/AbstractResultMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/CriteriaFilterProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/CriteriaQueryProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/DefaultEntityMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/DefaultResultMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/ElasticsearchEntityMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 the original author or authors.
+ * Copyright 2019-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,8 +15,6 @@
  */
 package org.springframework.data.elasticsearch.core;
 
-import com.fasterxml.jackson.databind.ObjectReader;
-import com.fasterxml.jackson.databind.ObjectWriter;
 import lombok.RequiredArgsConstructor;
 
 import java.io.IOException;
@@ -52,6 +50,8 @@ import org.springframework.util.ClassUtils;
 import org.springframework.util.ObjectUtils;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectReader;
+import com.fasterxml.jackson.databind.ObjectWriter;
 
 /**
  * Elasticsearch specific {@link EntityReader} & {@link EntityWriter} implementation based on domain type
@@ -241,27 +241,31 @@ public class ElasticsearchEntityMapper implements
 		Map<String, Object> target = new LinkedHashMap<>();
 		for (Entry<String, Object> entry : source.entrySet()) {
 
-			if (isSimpleType(entry.getValue())) {
-				target.put(entry.getKey(),
-						readSimpleValue(entry.getValue(), targetType.isMap() ? targetType.getComponentType() : targetType));
+			String entryKey = entry.getKey();
+			Object entryValue = entry.getValue();
+
+			if (entryValue == null) {
+				target.put(entryKey, null);
+			} else if (isSimpleType(entryValue)) {
+				target.put(entryKey,
+						readSimpleValue(entryValue, targetType.isMap() ? targetType.getComponentType() : targetType));
 			} else {
 
-				ElasticsearchPersistentEntity<?> targetEntity = computeGenericValueTypeForRead(property, entry.getValue());
+				ElasticsearchPersistentEntity<?> targetEntity = computeGenericValueTypeForRead(property, entryValue);
 
 				if (targetEntity.getTypeInformation().isMap()) {
 
-					Map<String, Object> valueMap = (Map) entry.getValue();
+					Map<String, Object> valueMap = (Map) entryValue;
 					if (typeMapper.containsTypeInformation(valueMap)) {
-						target.put(entry.getKey(), readEntity(targetEntity, (Map) entry.getValue()));
+						target.put(entryKey, readEntity(targetEntity, (Map) entryValue));
 					} else {
-						target.put(entry.getKey(), readValue(valueMap, property, targetEntity.getTypeInformation()));
+						target.put(entryKey, readValue(valueMap, property, targetEntity.getTypeInformation()));
 					}
 
 				} else if (targetEntity.getTypeInformation().isCollectionLike()) {
-					target.put(entry.getKey(),
-							readValue(entry.getValue(), property, targetEntity.getTypeInformation().getActualType()));
+					target.put(entryKey, readValue(entryValue, property, targetEntity.getTypeInformation().getActualType()));
 				} else {
-					target.put(entry.getKey(), readEntity(targetEntity, (Map) entry.getValue()));
+					target.put(entryKey, readEntity(targetEntity, (Map) entryValue));
 				}
 			}
 		}
@@ -281,13 +285,18 @@ public class ElasticsearchEntityMapper implements
 
 		for (Object value : source) {
 
-			if (isSimpleType(value)) {
+			if (value == null) {
+				target.add(null);
+			} else if (isSimpleType(value)) {
 				target.add(
 						readSimpleValue(value, targetType.getComponentType() != null ? targetType.getComponentType() : targetType));
 			} else {
 
 				if (value instanceof List) {
 					target.add(readValue(value, property, property.getTypeInformation().getActualType()));
+				} else if (value instanceof Map) {
+					target
+							.add(readMapValue((Map<String, Object>) value, property, property.getTypeInformation().getActualType()));
 				} else {
 					target.add(readEntity(computeGenericValueTypeForRead(property, value), (Map) value));
 				}
@@ -493,7 +502,14 @@ public class ElasticsearchEntityMapper implements
 
 		if (!typeHint.getActualType().getType().equals(Object.class)
 				&& isSimpleType(typeHint.getMapValueType().getType())) {
-			mapSource.forEach(it -> target.put(it.getKey(), getWriteSimpleValue(it.getValue())));
+			mapSource.forEach(it -> {
+
+				if (it.getValue() == null) {
+					target.put(it.getKey(), null);
+				} else {
+					target.put(it.getKey(), getWriteSimpleValue(it.getValue()));
+				}
+			});
 		} else {
 
 			mapSource.forEach(it -> {

src/main/java/org/springframework/data/elasticsearch/core/ElasticsearchExceptionTranslator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/ElasticsearchOperations.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/ElasticsearchRestTemplate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -143,6 +143,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
  * @author Peter-Josef Meisch
  * @author Mathias Teier
  * @author Gyula Attila Csorogi
+ * @author Alexander Shabunevich
  */
 public class ElasticsearchRestTemplate extends AbstractElasticsearchTemplate
 		implements ElasticsearchOperations, EsClient<RestHighLevelClient>, ApplicationContextAware {
@@ -208,11 +209,17 @@ public class ElasticsearchRestTemplate extends AbstractElasticsearchTemplate
 			aliasAction.filter(query.getFilterBuilder());
 		} else if (query.getFilter() != null) {
 			aliasAction.filter(query.getFilter());
-		} else if (hasText(query.getRouting())) {
+		}
+
+		if (hasText(query.getRouting())) {
 			aliasAction.routing(query.getRouting());
-		} else if (hasText(query.getSearchRouting())) {
+		}
+
+		if (hasText(query.getSearchRouting())) {
 			aliasAction.searchRouting(query.getSearchRouting());
-		} else if (hasText(query.getIndexRouting())) {
+		}
+
+		if (hasText(query.getIndexRouting())) {
 			aliasAction.indexRouting(query.getIndexRouting());
 		}
 
@@ -598,6 +605,7 @@ public class ElasticsearchRestTemplate extends AbstractElasticsearchTemplate
 		if (elasticsearchQuery != null) {
 			sourceBuilder.query(elasticsearchQuery);
 		}
+		sourceBuilder.size(0);
 		countRequest.source(sourceBuilder);
 
 		try {
@@ -616,6 +624,7 @@ public class ElasticsearchRestTemplate extends AbstractElasticsearchTemplate
 		if (elasticsearchFilter != null) {
 			searchRequest.source().postFilter(elasticsearchFilter);
 		}
+		searchRequest.source().size(0);
 		SearchResponse response;
 		try {
 			response = client.search(searchRequest, RequestOptions.DEFAULT);
@@ -960,6 +969,10 @@ public class ElasticsearchRestTemplate extends AbstractElasticsearchTemplate
 			prepareSort(query, searchSourceBuilder, entity);
 		}
 
+		if (query.getIndicesOptions() != null) {
+			request.indicesOptions(query.getIndicesOptions());
+		}
+
 		if (query instanceof SearchQuery) {
 			SearchQuery searchQuery = (SearchQuery) query;
 
@@ -1332,8 +1345,17 @@ public class ElasticsearchRestTemplate extends AbstractElasticsearchTemplate
 		}
 
 		if (query.getPageable().isPaged()) {
-			startRecord = query.getPageable().getPageNumber() * query.getPageable().getPageSize();
+			long offset = query.getPageable().getOffset();
+
+			if (offset > Integer.MAX_VALUE) {
+				throw new IllegalArgumentException(String.format("Offset must not be more than %d", Integer.MAX_VALUE));
+			}
+
+			startRecord = (int) offset;
 			sourceBuilder.size(query.getPageable().getPageSize());
+		} else {
+			startRecord = 0;
+			sourceBuilder.size(INDEX_MAX_RESULT_WINDOW);
 		}
 		sourceBuilder.from(startRecord);
 

src/main/java/org/springframework/data/elasticsearch/core/ElasticsearchTemplate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -123,6 +123,7 @@ import org.springframework.util.StringUtils;
  * @author Martin Choraine
  * @author Farid Azaza
  * @author Gyula Attila Csorogi
+ * @author Alexander Shabunevich
  */
 public class ElasticsearchTemplate extends AbstractElasticsearchTemplate
 		implements ElasticsearchOperations, EsClient<Client>, ApplicationContextAware {
@@ -189,13 +190,20 @@ public class ElasticsearchTemplate extends AbstractElasticsearchTemplate
 			aliasAction.filter(query.getFilterBuilder());
 		} else if (query.getFilter() != null) {
 			aliasAction.filter(query.getFilter());
-		} else if (!StringUtils.isEmpty(query.getRouting())) {
+		}
+
+		if (!StringUtils.isEmpty(query.getRouting())) {
 			aliasAction.routing(query.getRouting());
-		} else if (!StringUtils.isEmpty(query.getSearchRouting())) {
+		}
+
+		if (!StringUtils.isEmpty(query.getSearchRouting())) {
 			aliasAction.searchRouting(query.getSearchRouting());
-		} else if (!StringUtils.isEmpty(query.getIndexRouting())) {
+		}
+
+		if (!StringUtils.isEmpty(query.getIndexRouting())) {
 			aliasAction.indexRouting(query.getIndexRouting());
 		}
+
 		return client.admin().indices().prepareAliases().addAliasAction(aliasAction).execute().actionGet().isAcknowledged();
 	}
 
@@ -508,6 +516,7 @@ public class ElasticsearchTemplate extends AbstractElasticsearchTemplate
 		if (elasticsearchQuery != null) {
 			countRequestBuilder.setQuery(elasticsearchQuery);
 		}
+		countRequestBuilder.setSize(0);
 		return countRequestBuilder.execute().actionGet().getHits().getTotalHits();
 	}
 
@@ -521,6 +530,7 @@ public class ElasticsearchTemplate extends AbstractElasticsearchTemplate
 		if (elasticsearchFilter != null) {
 			searchRequestBuilder.setPostFilter(elasticsearchFilter);
 		}
+		searchRequestBuilder.setSize(0);
 		return searchRequestBuilder.execute().actionGet().getHits().getTotalHits();
 	}
 
@@ -810,6 +820,10 @@ public class ElasticsearchTemplate extends AbstractElasticsearchTemplate
 			prepareSort(query, requestBuilder, entity);
 		}
 
+		if (query.getIndicesOptions() != null) {
+			requestBuilder.setIndicesOptions(query.getIndicesOptions());
+		}
+
 		if (query instanceof SearchQuery) {
 			SearchQuery searchQuery = (SearchQuery) query;
 
@@ -1109,8 +1123,17 @@ public class ElasticsearchTemplate extends AbstractElasticsearchTemplate
 		}
 
 		if (query.getPageable().isPaged()) {
-			startRecord = query.getPageable().getPageNumber() * query.getPageable().getPageSize();
+			long offset = query.getPageable().getOffset();
+
+			if (offset > Integer.MAX_VALUE) {
+				throw new IllegalArgumentException(String.format("Offset must not be more than %d", Integer.MAX_VALUE));
+			}
+
+			startRecord = (int) offset;
 			searchRequestBuilder.setSize(query.getPageable().getPageSize());
+		} else {
+			startRecord = 0;
+			searchRequestBuilder.setSize(INDEX_MAX_RESULT_WINDOW);
 		}
 		searchRequestBuilder.setFrom(startRecord);
 

src/main/java/org/springframework/data/elasticsearch/core/EntityMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/EntityOperations.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/EsClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/FacetedPage.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/FacetedPageImpl.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/GetResultMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/MappingBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/MultiGetResultMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/ReactiveElasticsearchOperations.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/ReactiveElasticsearchTemplate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -36,6 +36,7 @@ import org.elasticsearch.action.support.IndicesOptions;
 import org.elasticsearch.action.support.WriteRequest;
 import org.elasticsearch.action.support.WriteRequest.RefreshPolicy;
 import org.elasticsearch.client.Requests;
+import org.elasticsearch.client.core.CountRequest;
 import org.elasticsearch.index.get.GetResult;
 import org.elasticsearch.index.query.QueryBuilder;
 import org.elasticsearch.index.query.QueryBuilders;
@@ -247,80 +248,135 @@ public class ReactiveElasticsearchTemplate implements ReactiveElasticsearchOpera
 			@Nullable String type) {
 
 		return Flux.defer(() -> {
+			SearchRequest request = prepareSearchRequest(buildSearchRequest(query, entity, index, type));
 
-			IndexCoordinates indexCoordinates = operations.determineIndex(entity, index, type);
-			SearchRequest request = new SearchRequest(indices(query, indexCoordinates::getIndexName));
-			request.types(indexTypes(query, indexCoordinates::getTypeName));
-
-			SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
-			searchSourceBuilder.query(mappedQuery(query, entity));
-			searchSourceBuilder.version(entity.hasVersionProperty());
-			searchSourceBuilder.trackScores(query.getTrackScores());
-
-			QueryBuilder postFilterQuery = mappedFilterQuery(query, entity);
-			if (postFilterQuery != null) {
-				searchSourceBuilder.postFilter(postFilterQuery);
-			}
-
-			if (query.getSourceFilter() != null) {
-				searchSourceBuilder.fetchSource(query.getSourceFilter().getIncludes(), query.getSourceFilter().getExcludes());
-			}
-
-			if (query instanceof SearchQuery && ((SearchQuery) query).getCollapseBuilder() != null) {
-				searchSourceBuilder.collapse(((SearchQuery) query).getCollapseBuilder());
-			}
-
-			sort(query, entity).forEach(searchSourceBuilder::sort);
-
-			if (query.getMinScore() > 0) {
-				searchSourceBuilder.minScore(query.getMinScore());
-			}
-
-			if (query.getIndicesOptions() != null) {
-				request.indicesOptions(query.getIndicesOptions());
-			}
-
-			if (query.getPreference() != null) {
-				request.preference(query.getPreference());
-			}
-
-			if (query.getSearchType() != null) {
-				request.searchType(query.getSearchType());
-			}
-
-			Pageable pageable = query.getPageable();
-
-			if (pageable.isPaged()) {
-
-				long offset = pageable.getOffset();
-				if (offset > Integer.MAX_VALUE) {
-					throw new IllegalArgumentException(String.format("Offset must not be more than %s", Integer.MAX_VALUE));
-				}
-
-				searchSourceBuilder.from((int) offset);
-				searchSourceBuilder.size(pageable.getPageSize());
-
-				request.source(searchSourceBuilder);
-				return doFind(prepareSearchRequest(request));
-
+			if (query.getPageable().isPaged()) {
+				return doFind(request);
 			} else {
-
-				request.source(searchSourceBuilder);
-				return doScan(prepareSearchRequest(request));
+				return doScroll(request);
 			}
 		});
 	}
 
+	@Override
+	public Mono<Long> count(Query query, Class<?> entityType, String index, String type) {
+		return doCount(query, getPersistentEntity(entityType), index, type);
+	}
+
+	private Mono<Long> doCount(Query query, ElasticsearchPersistentEntity<?> entity, @Nullable String index,
+			@Nullable String type) {
+		return Mono.defer(() -> {
+
+			CountRequest countRequest = buildCountRequest(query, entity, index, type);
+			CountRequest request = prepareCountRequest(countRequest);
+			return doCount(request);
+		});
+
+	}
+
+	private CountRequest buildCountRequest(Query query, ElasticsearchPersistentEntity<?> entity, @Nullable String index,
+			@Nullable String type) {
+
+		IndexCoordinates indexCoordinates = operations.determineIndex(entity, index, type);
+		CountRequest request = new CountRequest(indices(query, indexCoordinates::getIndexName));
+		SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
+		searchSourceBuilder.query(mappedQuery(query, entity));
+		searchSourceBuilder.trackScores(query.getTrackScores());
+
+		QueryBuilder postFilterQuery = mappedFilterQuery(query, entity);
+		if (postFilterQuery != null) {
+			searchSourceBuilder.postFilter(postFilterQuery);
+		}
+
+		if (query.getSourceFilter() != null) {
+			searchSourceBuilder.fetchSource(query.getSourceFilter().getIncludes(), query.getSourceFilter().getExcludes());
+		}
+
+		if (query instanceof SearchQuery && ((SearchQuery) query).getCollapseBuilder() != null) {
+			searchSourceBuilder.collapse(((SearchQuery) query).getCollapseBuilder());
+		}
+
+		sort(query, entity).forEach(searchSourceBuilder::sort);
+
+		if (query.getMinScore() > 0) {
+			searchSourceBuilder.minScore(query.getMinScore());
+		}
+
+		if (query.getIndicesOptions() != null) {
+			request.indicesOptions(query.getIndicesOptions());
+		}
+
+		if (query.getPreference() != null) {
+			request.preference(query.getPreference());
+		}
+		request.source(searchSourceBuilder);
+		return request;
+	}
+
+	private SearchRequest buildSearchRequest(Query query, ElasticsearchPersistentEntity<?> entity, @Nullable String index,
+			@Nullable String type) {
+		IndexCoordinates indexCoordinates = operations.determineIndex(entity, index, type);
+		SearchRequest request = new SearchRequest(indices(query, indexCoordinates::getIndexName));
+		SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
+		searchSourceBuilder.query(mappedQuery(query, entity));
+		searchSourceBuilder.version(entity.hasVersionProperty());
+		searchSourceBuilder.trackScores(query.getTrackScores());
+
+		QueryBuilder postFilterQuery = mappedFilterQuery(query, entity);
+		if (postFilterQuery != null) {
+			searchSourceBuilder.postFilter(postFilterQuery);
+		}
+
+		if (query.getSourceFilter() != null) {
+			searchSourceBuilder.fetchSource(query.getSourceFilter().getIncludes(), query.getSourceFilter().getExcludes());
+		}
+
+		if (query instanceof SearchQuery && ((SearchQuery) query).getCollapseBuilder() != null) {
+			searchSourceBuilder.collapse(((SearchQuery) query).getCollapseBuilder());
+		}
+
+		sort(query, entity).forEach(searchSourceBuilder::sort);
+
+		if (query.getMinScore() > 0) {
+			searchSourceBuilder.minScore(query.getMinScore());
+		}
+
+		if (query.getIndicesOptions() != null) {
+			request.indicesOptions(query.getIndicesOptions());
+		}
+
+		if (query.getPreference() != null) {
+			request.preference(query.getPreference());
+		}
+
+		if (query.getSearchType() != null) {
+			request.searchType(query.getSearchType());
+		}
+
+		Pageable pageable = query.getPageable();
+
+		if (pageable.isPaged()) {
+
+			long offset = pageable.getOffset();
+			if (offset > Integer.MAX_VALUE) {
+				throw new IllegalArgumentException(String.format("Offset must not be more than %s", Integer.MAX_VALUE));
+			}
+
+			searchSourceBuilder.from((int) offset);
+			searchSourceBuilder.size(pageable.getPageSize());
+
+			request.source(searchSourceBuilder);
+		} else {
+			searchSourceBuilder.from(0);
+			searchSourceBuilder.size(AbstractElasticsearchTemplate.INDEX_MAX_RESULT_WINDOW);
+			request.source(searchSourceBuilder);
+		}
+		return request;
+	}
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.elasticsearch.core.ReactiveElasticsearchOperations#count(Query, Class, String, String)
 	 */
-	@Override
-	public Mono<Long> count(Query query, Class<?> entityType, String index, String type) {
-
-		// TODO: ES 7.0 has a dedicated CountRequest - use that one once available.
-		return find(query, entityType, index, type).count();
-	}
 
 	/*
 	 * (non-Javadoc)
@@ -457,6 +513,22 @@ public class ReactiveElasticsearchTemplate implements ReactiveElasticsearchOpera
 		return prepareWriteRequest(request);
 	}
 
+	/**
+	 * Customization hook to modify a generated {@link SearchRequest} prior to its execution. Eg. by setting the
+	 * {@link SearchRequest#indicesOptions(IndicesOptions) indices options} if applicable.
+	 *
+	 * @param request the generated {@link CountRequest}.
+	 * @return never {@literal null}.
+	 */
+	protected CountRequest prepareCountRequest(CountRequest request) {
+
+		if (indicesOptions == null) {
+			return request;
+		}
+
+		return request.indicesOptions(indicesOptions);
+	}
+
 	/**
 	 * Customization hook to modify a generated {@link SearchRequest} prior to its execution. Eg. by setting the
 	 * {@link SearchRequest#indicesOptions(IndicesOptions) indices options} if applicable.
@@ -557,16 +629,32 @@ public class ReactiveElasticsearchTemplate implements ReactiveElasticsearchOpera
 				.onErrorResume(NoSuchIndexException.class, it -> Mono.empty());
 	}
 
+	/**
+	 * Customization hook on the actual execution result {@link Publisher}. <br />
+	 *
+	 * @param request the already prepared {@link CountRequest} ready to be executed.
+	 * @return a {@link Mono} emitting the result of the operation.
+	 */
+	protected Mono<Long> doCount(CountRequest request) {
+
+		if (QUERY_LOGGER.isDebugEnabled()) {
+			QUERY_LOGGER.debug("Executing doCount: {}", request);
+		}
+
+		return Mono.from(execute(client -> client.count(request))) //
+				.onErrorResume(NoSuchIndexException.class, it -> Mono.empty());
+	}
+
 	/**
 	 * Customization hook on the actual execution result {@link Publisher}. <br />
 	 *
 	 * @param request the already prepared {@link SearchRequest} ready to be executed.
 	 * @return a {@link Flux} emitting the result of the operation.
 	 */
-	protected Flux<SearchHit> doScan(SearchRequest request) {
+	protected Flux<SearchHit> doScroll(SearchRequest request) {
 
 		if (QUERY_LOGGER.isDebugEnabled()) {
-			QUERY_LOGGER.debug("Executing doScan: {}", request);
+			QUERY_LOGGER.debug("Executing doScroll: {}", request);
 		}
 
 		return Flux.from(execute(client -> client.scroll(request))) //
@@ -665,9 +753,7 @@ public class ReactiveElasticsearchTemplate implements ReactiveElasticsearchOpera
 			elasticsearchQuery = new WrapperQueryBuilder(((StringQuery) query).getSource());
 		} else if (query instanceof NativeSearchQuery) {
 			elasticsearchQuery = ((NativeSearchQuery) query).getQuery();
-		}
-
-		else {
+		} else {
 			throw new IllegalArgumentException(String.format("Unknown query type '%s'.", query.getClass()));
 		}
 

src/main/java/org/springframework/data/elasticsearch/core/ResourceUtil.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 the original author or authors.
+ * Copyright 2019-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/ResultsExtractor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/ResultsMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/ScoredPage.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/ScrolledPage.java

@@ -2,12 +2,14 @@
 package org.springframework.data.elasticsearch.core;
 
 import org.springframework.data.domain.Page;
+import org.springframework.lang.Nullable;
 
 /**
  * @author Artur Konczak
+ * @author Peter-Josef Meisch
+ * @author Sascha Woo
  */
 public interface ScrolledPage<T> extends Page<T> {
 
-    String getScrollId();
-
+	String getScrollId();
 }

src/main/java/org/springframework/data/elasticsearch/core/SearchResultMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/SearchResultMapperAdapter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 the original author or authors.
+ * Copyright 2019-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/StreamQueries.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 the original author or authors.
+ * Copyright 2019-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,11 +21,13 @@ import java.util.function.Consumer;
 import java.util.function.Function;
 
 import org.springframework.data.util.CloseableIterator;
+import org.springframework.util.Assert;
 
 /**
  * Utility to support streaming queries.
  *
  * @author Mark Paluch
+ * @author Sascha Woo
  * @since 3.2
  */
 abstract class StreamQueries {
@@ -33,72 +35,71 @@ abstract class StreamQueries {
 	/**
 	 * Stream query results using {@link ScrolledPage}.
 	 *
-	 * @param page the initial page.
-	 * @param continueFunction continuation function accepting the current scrollId.
-	 * @param clearScroll cleanup function accepting the current scrollId.
+	 * @param page the initial scrolled page.
+	 * @param continueScrollFunction function to continue scrolling applies to the current scrollId.
+	 * @param clearScrollConsumer consumer to clear the scroll context by accepting the current scrollId.
 	 * @param <T>
 	 * @return the {@link CloseableIterator}.
 	 */
 	static <T> CloseableIterator<T> streamResults(ScrolledPage<T> page,
-			Function<String, ScrolledPage<T>> continueFunction, Consumer<String> clearScroll) {
+			Function<String, ScrolledPage<T>> continueScrollFunction, Consumer<String> clearScrollConsumer) {
+
+		Assert.notNull(page, "page must not be null.");
+		Assert.notNull(page.getScrollId(), "scrollId must not be null.");
+		Assert.notNull(continueScrollFunction, "continueScrollFunction must not be null.");
+		Assert.notNull(clearScrollConsumer, "clearScrollConsumer must not be null.");
 
 		return new CloseableIterator<T>() {
 
-			/** As we couldn't retrieve single result with scroll, store current hits. */
-			private volatile Iterator<T> currentHits = page.iterator();
-
-			/** The scroll id. */
+			// As we couldn't retrieve single result with scroll, store current hits.
+			private volatile Iterator<T> scrollHits = page.iterator();
 			private volatile String scrollId = page.getScrollId();
-
-			/** If stream is finished (ie: cluster returns no results. */
-			private volatile boolean finished = !currentHits.hasNext();
+			private volatile boolean continueScroll = scrollHits.hasNext();
 
 			@Override
 			public void close() {
+
 				try {
-					// Clear scroll on cluster only in case of error (cause elasticsearch auto clear scroll when it's done)
-					if (!finished && scrollId != null && currentHits != null && currentHits.hasNext()) {
-						clearScroll.accept(scrollId);
-					}
+					clearScrollConsumer.accept(scrollId);
 				} finally {
-					currentHits = null;
+					scrollHits = null;
 					scrollId = null;
 				}
 			}
 
 			@Override
 			public boolean hasNext() {
-				// Test if stream is finished
-				if (finished) {
+
+				if (!continueScroll) {
 					return false;
 				}
-				// Test if it remains hits
-				if (currentHits == null || !currentHits.hasNext()) {
-					// Do a new request
-					ScrolledPage<T> scroll = continueFunction.apply(scrollId);
-					// Save hits and scroll id
-					currentHits = scroll.iterator();
-					finished = !currentHits.hasNext();
-					scrollId = scroll.getScrollId();
+
+				if (!scrollHits.hasNext()) {
+					ScrolledPage<T> nextPage = continueScrollFunction.apply(scrollId);
+					scrollHits = nextPage.iterator();
+					scrollId = nextPage.getScrollId();
+					continueScroll = scrollHits.hasNext();
 				}
-				return currentHits.hasNext();
+
+				return scrollHits.hasNext();
 			}
 
 			@Override
 			public T next() {
 				if (hasNext()) {
-					return currentHits.next();
+					return scrollHits.next();
 				}
 				throw new NoSuchElementException();
 			}
 
 			@Override
 			public void remove() {
-				throw new UnsupportedOperationException("remove");
+				throw new UnsupportedOperationException();
 			}
 		};
 	}
 
 	// utility constructor
-	private StreamQueries() {}
+	private StreamQueries() {
+	}
 }

src/main/java/org/springframework/data/elasticsearch/core/aggregation/impl/AggregatedPageImpl.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 the original author or authors.
+ * Copyright 2017-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/client/support/AliasData.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/convert/DateTimeConverters.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/convert/DefaultElasticsearchTypeMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 the original author or authors.
+ * Copyright 2019-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/convert/ElasticsearchConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/convert/ElasticsearchCustomConversions.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/convert/ElasticsearchTypeMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 the original author or authors.
+ * Copyright 2019-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/convert/GeoConverters.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 the original author or authors.
+ * Copyright 2019-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/convert/MappingElasticsearchConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 the original author or authors.
+ * Copyright 2013-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/AbstractFacetRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/AbstractFacetResult.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/FacetRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/FacetResult.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/FacetType.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/request/HistogramFacetRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/request/HistogramFacetRequestBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/request/NativeFacetRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/request/RangeFacetRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/request/RangeFacetRequestBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/request/StatisticalFacetRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/java/org/springframework/data/elasticsearch/core/facet/request/StatisticalFacetRequestBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.