Fix @Query method implementation for unpaged queries.

Original Pull Request #1919 
Closes #1917

src/main/java/org/springframework/data/elasticsearch/repository/query/ElasticsearchStringQuery.java

@@ -16,6 +16,7 @@
 package org.springframework.data.elasticsearch.repository.query;
 
 import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.elasticsearch.core.ElasticsearchOperations;
 import org.springframework.data.elasticsearch.core.SearchHitSupport;
 import org.springframework.data.elasticsearch.core.SearchHits;
@@ -81,16 +82,11 @@ public class ElasticsearchStringQuery extends AbstractElasticsearchRepositoryQue
 						.unwrapSearchHits(SearchHitSupport.searchPageFor(searchHits, stringQuery.getPageable()));
 			}
 		} else if (queryMethod.isStreamQuery()) {
-			if (accessor.getPageable().isUnpaged()) {
+			stringQuery.setPageable(
-				stringQuery.setPageable(PageRequest.of(0, DEFAULT_STREAM_BATCH_SIZE));
+					accessor.getPageable().isPaged() ? accessor.getPageable() : PageRequest.of(0, DEFAULT_STREAM_BATCH_SIZE));
-			} else {
-				stringQuery.setPageable(accessor.getPageable());
-			}
 			result = StreamUtils.createStreamFromIterator(elasticsearchOperations.searchForStream(stringQuery, clazz, index));
 		} else if (queryMethod.isCollectionQuery()) {
-			if (accessor.getPageable().isPaged()) {
+			stringQuery.setPageable(accessor.getPageable().isPaged() ? accessor.getPageable() : Pageable.unpaged());
-				stringQuery.setPageable(accessor.getPageable());
-			}
 			result = elasticsearchOperations.search(stringQuery, clazz, index);
 		} else {
 			result = elasticsearchOperations.searchOne(stringQuery, clazz, index);

src/test/java/org/springframework/data/elasticsearch/repositories/custommethod/CustomMethodRepositoryBaseTests.java

@@ -1612,19 +1612,18 @@ public abstract class CustomMethodRepositoryBaseTests {
 		assertThat((nextPageable.getPageNumber())).isEqualTo(1);
 	}
 
-	private List<SampleEntity> createSampleEntities(String type, int numberOfEntities) {
+	@Test // #1917
+	@DisplayName("shouldReturnAllDocumentsWithUnpagedQuery")
+	void shouldReturnAllDocumentsWithUnpagedQuery() {
 
-		List<SampleEntity> entities = new ArrayList<>();
+		List<SampleEntity> entities = createSampleEntities("abc", 20);
-		for (int i = 0; i < numberOfEntities; i++) {
+		repository.saveAll(entities);
-			SampleEntity entity = new SampleEntity();
-			entity.setId(UUID.randomUUID().toString());
-			entity.setAvailable(true);
-			entity.setMessage("Message");
-			entity.setType(type);
-			entities.add(entity);
-		}
 
-		return entities;
+		SearchHits<SampleEntity> searchHits = repository.searchWithQueryByMessageUnpaged("Message");
+
+		assertThat(searchHits).isNotNull();
+		assertThat((searchHits.getTotalHits())).isEqualTo(20);
+		assertThat(searchHits.getSearchHits()).hasSize(20);
 	}
 
 	@Test // DATAES-891
@@ -1649,6 +1648,21 @@ public abstract class CustomMethodRepositoryBaseTests {
 		assertThat(count).isEqualTo(20);
 	}
 
+	private List<SampleEntity> createSampleEntities(String type, int numberOfEntities) {
+
+		List<SampleEntity> entities = new ArrayList<>();
+		for (int i = 0; i < numberOfEntities; i++) {
+			SampleEntity entity = new SampleEntity();
+			entity.setId(UUID.randomUUID().toString());
+			entity.setAvailable(true);
+			entity.setMessage("Message");
+			entity.setType(type);
+			entities.add(entity);
+		}
+
+		return entities;
+	}
+
 	@Document(indexName = "#{@indexNameProvider.indexName()}")
 	static class SampleEntity {
 		@Nullable @Id private String id;
@@ -1857,6 +1871,9 @@ public abstract class CustomMethodRepositoryBaseTests {
 		@Query("{\"match\": {\"message\": \"?0\"}}")
 		SearchPage<SampleEntity> searchWithQueryByMessage(String message, Pageable pageable);
 
+		@Query("{\"match\": {\"message\": \"?0\"}}")
+		SearchHits<SampleEntity> searchWithQueryByMessageUnpaged(String message);
+
 		@CountQuery("{\"bool\" : {\"must\" : {\"term\" : {\"type\" : \"?0\"}}}}")
 		long countWithQueryByType(String type);
 	}

src/test/java/org/springframework/data/elasticsearch/repository/support/SimpleReactiveElasticsearchRepositoryTests.java

@@ -28,6 +28,7 @@ import java.lang.Long;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
 import org.elasticsearch.ElasticsearchStatusException;
@@ -541,14 +542,36 @@ class SimpleReactiveElasticsearchRepositoryTests {
 	@Test // DATAES-519
 	void annotatedFinderMethodShouldBeExecutedCorrectly() {
 
-		bulkIndex(new SampleEntity("id-one", "message"), //
+		int count = 30;
-				new SampleEntity("id-two", "test message"), //
+		SampleEntity[] sampleEntities = IntStream.range(1, count + 1)
-				new SampleEntity("id-three", "test test")) //
+				.mapToObj(i -> new SampleEntity("id-" + i, "test " + i)).collect(Collectors.toList())
-						.block();
+				.toArray(new SampleEntity[count]);
+
+		bulkIndex(sampleEntities).block();
 
 		repository.findAllViaAnnotatedQueryByMessageLike("test") //
 				.as(StepVerifier::create) //
-				.expectNextCount(2) //
+				.expectNextCount(count) //
+				.verifyComplete();
+	}
+
+	@Test // #1917
+	void annotatedFinderMethodPagedShouldBeExecutedCorrectly() {
+
+		int count = 30;
+		SampleEntity[] sampleEntities = IntStream.range(1, count + 1)
+				.mapToObj(i -> new SampleEntity("id-" + i, "test " + i)).collect(Collectors.toList())
+				.toArray(new SampleEntity[count]);
+
+		bulkIndex(sampleEntities).block();
+
+		repository.findAllViaAnnotatedQueryByMessageLikePaged("test", PageRequest.of(0, 20)) //
+				.as(StepVerifier::create) //
+				.expectNextCount(20) //
+				.verifyComplete();
+		repository.findAllViaAnnotatedQueryByMessageLikePaged("test", PageRequest.of(1, 20)) //
+				.as(StepVerifier::create) //
+				.expectNextCount(10) //
 				.verifyComplete();
 	}
 
@@ -596,6 +619,9 @@ class SimpleReactiveElasticsearchRepositoryTests {
 		@Query("{ \"bool\" : { \"must\" : { \"term\" : { \"message\" : \"?0\" } } } }")
 		Flux<SampleEntity> findAllViaAnnotatedQueryByMessageLike(String message);
 
+		@Query("{ \"bool\" : { \"must\" : { \"term\" : { \"message\" : \"?0\" } } } }")
+		Flux<SampleEntity> findAllViaAnnotatedQueryByMessageLikePaged(String message, Pageable pageable);
+
 		Mono<SampleEntity> findFirstByMessageLike(String message);
 
 		Mono<Long> countAllByMessage(String message);