DATAES-671 - Missing indicesOptions support for scrolling queries.

Original PR: spring-projects#332

Author: sirgyula

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

@@ -977,6 +977,10 @@ private SearchRequest prepareScroll(Query query, long scrollTimeInMillis,
 			prepareSort(query, searchSourceBuilder, entity);
 		}
 
+		if (query.getIndicesOptions() != null) {
+			request.indicesOptions(query.getIndicesOptions());
+		}
+
 		if (query instanceof SearchQuery) {
 			SearchQuery searchQuery = (SearchQuery) query;
 

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

@@ -826,6 +826,10 @@ private SearchRequestBuilder prepareScroll(Query query, long scrollTimeInMillis,
 			prepareSort(query, requestBuilder, entity);
 		}
 
+		if (query.getIndicesOptions() != null) {
+			requestBuilder.setIndicesOptions(query.getIndicesOptions());
+		}
+
 		if (query instanceof SearchQuery) {
 			SearchQuery searchQuery = (SearchQuery) query;
 

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

@@ -1716,6 +1716,44 @@ public <T> T mapSearchHit(SearchHit searchHit, Class<T> type) {
 		elasticsearchTemplate.clearScroll(scroll.getScrollId());
 	}
 
+	@Test // DATAES-671
+	public void shouldPassIndicesOptionsForGivenSearchScrollQuery() {
+
+		// given
+		long scrollTimeInMillis = 3000;
+		String documentId = randomNumeric(5);
+		SampleEntity sampleEntity = SampleEntity.builder().id(documentId).message("some message")
+				.version(System.currentTimeMillis()).build();
+
+		IndexQuery idxQuery = new IndexQueryBuilder().withIndexName(INDEX_1_NAME).withId(sampleEntity.getId())
+				.withObject(sampleEntity).build();
+
+		elasticsearchTemplate.index(idxQuery);
+		elasticsearchTemplate.refresh(INDEX_1_NAME);
+
+		// when
+		SearchQuery searchQuery = new NativeSearchQueryBuilder().withQuery(matchAllQuery())
+				.withIndices(INDEX_1_NAME, INDEX_2_NAME).withIndicesOptions(IndicesOptions.lenientExpandOpen()).build();
+
+		List<SampleEntity> entities = new ArrayList<>();
+
+		ScrolledPage<SampleEntity> scroll = elasticsearchTemplate.startScroll(scrollTimeInMillis, searchQuery,
+				SampleEntity.class, searchResultMapper);
+
+		entities.addAll(scroll.getContent());
+
+		while (scroll.hasContent()) {
+			scroll = elasticsearchTemplate.continueScroll(scroll.getScrollId(), scrollTimeInMillis, SampleEntity.class,
+					searchResultMapper);
+
+			entities.addAll(scroll.getContent());
+		}
+
+		// then
+		assertThat(entities).isNotNull();
+		assertThat(entities.size()).isGreaterThanOrEqualTo(1);
+	}
+
 	@Test // DATAES-479
 	public void shouldHonorTheHighlightBuilderOptions() {