Update document partially by specified entity.

Original Pull Request #2310 
Closes #2304

CONTRIBUTING.adoc

@@ -8,4 +8,4 @@ In order to run the tests locally with `./mvnw test` you need to have docker run
 
 == Class names of the test classes
 
-Tset classes that do depend on the client have either `ERHLC` (when using the deprecated Elasticsearch  `RestHighLevelClient`) or `ELC` (the new `ElasticsearchClient`) in their name.
+Test classes that do depend on the client have either `ERHLC` (when using the deprecated Elasticsearch  `RestHighLevelClient`) or `ELC` (the new `ElasticsearchClient`) in their name.

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

@@ -49,6 +49,7 @@ import org.springframework.data.elasticsearch.core.query.MoreLikeThisQuery;
 import org.springframework.data.elasticsearch.core.query.Query;
 import org.springframework.data.elasticsearch.core.query.SeqNoPrimaryTerm;
 import org.springframework.data.elasticsearch.core.query.UpdateQuery;
+import org.springframework.data.elasticsearch.core.query.UpdateResponse;
 import org.springframework.data.elasticsearch.core.routing.DefaultRoutingResolver;
 import org.springframework.data.elasticsearch.core.routing.RoutingResolver;
 import org.springframework.data.elasticsearch.support.VersionInfo;
@@ -75,6 +76,7 @@ import org.springframework.util.Assert;
  * @author Subhobrata Dey
  * @author Steven Pearce
  * @author Anton Naydenov
+ * @author Haibo Liu
  */
 public abstract class AbstractElasticsearchTemplate implements ElasticsearchOperations, ApplicationContextAware {
 
@@ -305,7 +307,7 @@ public abstract class AbstractElasticsearchTemplate implements ElasticsearchOper
 	@Override
 	public String delete(Object entity, IndexCoordinates index) {
 		String entityId = getEntityId(entity);
-		Assert.notNull(entityId, "entity must have an if that is notnull");
+		Assert.notNull(entityId, "entity must have an id that is notnull");
 		return this.delete(entityId, index);
 	}
 
@@ -460,6 +462,27 @@ public abstract class AbstractElasticsearchTemplate implements ElasticsearchOper
 		return getRequiredPersistentEntity(clazz).getIndexCoordinates();
 	}
 
+	@Override
+	public <T> UpdateResponse update(T entity) {
+		return update(buildUpdateQueryByEntity(entity), getIndexCoordinatesFor(entity.getClass()));
+	}
+
+	protected <T> UpdateQuery buildUpdateQueryByEntity(T entity) {
+		Assert.notNull(entity, "entity must not be null");
+
+		String id = getEntityId(entity);
+		Assert.notNull(entity, "entity must have an id that is notnull");
+
+		UpdateQuery.Builder updateQueryBuilder = UpdateQuery.builder(id)
+				.withDocument(elasticsearchConverter.mapObject(entity));
+
+		String routing = getEntityRouting(entity);
+		if (Objects.nonNull(routing)) {
+			updateQueryBuilder.withRouting(routing);
+		}
+		return updateQueryBuilder.build();
+	}
+
 	protected <T> T updateIndexedObject(T entity, IndexedObjectInformation indexedObjectInformation) {
 
 		ElasticsearchPersistentEntity<?> persistentEntity = elasticsearchConverter.getMappingContext()

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

@@ -37,6 +37,7 @@ import org.springframework.lang.Nullable;
  * @author Peter-Josef Meisch
  * @author Farid Faoudi
  * @author Sijia Liu
+ * @author Haibo Liu
  * @since 4.0
  */
 public interface DocumentOperations {
@@ -293,6 +294,15 @@ public interface DocumentOperations {
 	 */
 	ByQueryResponse delete(Query query, Class<?> clazz, IndexCoordinates index);
 
+	/**
+	 * Partially update a document by the given entity.
+	 *
+	 * @param entity the entity to update partially
+	 * @return the update response
+	 * @param <T> the entity type
+	 */
+	<T> UpdateResponse update(T entity);
+
 	/**
 	 * Partial update of the document.
 	 *

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

@@ -112,6 +112,7 @@ import org.springframework.lang.Nullable;
  * @author Farid Faoudi
  * @author Peer Mueller
  * @author Sijia Liu
+ * @author Haibo Liu
  */
 @SpringIntegrationTest
 public abstract class ElasticsearchIntegrationTests {
@@ -186,6 +187,20 @@ public abstract class ElasticsearchIntegrationTests {
 
 	protected abstract Query getQueryWithRescorer();
 
+	@Test // #2304
+	public void shouldThrowDataAccessExceptionIfDocumentDoesNotExistWhileDoingPartialUpdateByEntity() {
+
+		// given
+		String documentId = nextIdAsString();
+		String messageBeforeUpdate = "some test message";
+
+		SampleEntity sampleEntity = SampleEntity.builder().id(documentId).message(messageBeforeUpdate)
+				.version(System.currentTimeMillis()).build();
+
+		assertThatThrownBy(() -> operations.update(sampleEntity))
+				.isInstanceOf(DataAccessException.class);
+	}
+
 	@Test
 	public void shouldThrowDataAccessExceptionIfDocumentDoesNotExistWhileDoingPartialUpdate() {
 
@@ -1505,6 +1520,32 @@ public abstract class ElasticsearchIntegrationTests {
 		assertThat(indexOperations.exists()).isFalse();
 	}
 
+	@Test // #2304
+	public void shouldDoPartialUpdateBySuppliedEntityForExistingDocument() {
+
+		// given
+		String documentId = nextIdAsString();
+		String messageBeforeUpdate = "some test message";
+		String messageAfterUpdate = "test message";
+		String originalTypeInfo = "some type";
+
+		SampleEntity sampleEntity = SampleEntity.builder().id(documentId).message(messageBeforeUpdate).type(originalTypeInfo)
+				.version(System.currentTimeMillis()).build();
+		operations.save(sampleEntity);
+
+		// modify the entity
+		sampleEntity.setMessage(messageAfterUpdate);
+		sampleEntity.setType(null);
+
+		// when
+		operations.update(sampleEntity);
+
+		// then
+		SampleEntity indexedEntity = operations.get(documentId, SampleEntity.class);
+		assertThat(indexedEntity.getType()).isEqualTo(originalTypeInfo);
+		assertThat(indexedEntity.getMessage()).isEqualTo(messageAfterUpdate);
+	}
+
 	@Test
 	public void shouldDoPartialUpdateForExistingDocument() {