Fix @query method implementation for unpaged queries.

Original Pull Request #1919
Closes #1917

(cherry picked from commit e717586)
(cherry picked from commit 2dd0a67)

Author: sothawo

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;
@@ -73,16 +74,11 @@ public Object execute(Object[] parameters) {
 						.unwrapSearchHits(SearchHitSupport.searchPageFor(searchHits, stringQuery.getPageable()));
 			}
 		} else if (queryMethod.isStreamQuery()) {
-			if (accessor.getPageable().isUnpaged()) {
-				stringQuery.setPageable(PageRequest.of(0, DEFAULT_STREAM_BATCH_SIZE));
-			} else {
-				stringQuery.setPageable(accessor.getPageable());
-			}
+			stringQuery.setPageable(
+					accessor.getPageable().isPaged() ? accessor.getPageable() : PageRequest.of(0, DEFAULT_STREAM_BATCH_SIZE));
 			result = StreamUtils.createStreamFromIterator(elasticsearchOperations.searchForStream(stringQuery, clazz, index));
 		} else if (queryMethod.isCollectionQuery()) {
-			if (accessor.getPageable().isPaged()) {
-				stringQuery.setPageable(accessor.getPageable());
-			}
+			stringQuery.setPageable(accessor.getPageable().isPaged() ? accessor.getPageable() : Pageable.unpaged());
 			result = elasticsearchOperations.search(stringQuery, clazz, index);
 		} else {
 			result = elasticsearchOperations.searchOne(stringQuery, clazz, index);

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2020 the original author or authors.
+ * Copyright 2013-2021 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.
@@ -1587,6 +1587,19 @@ void shouldReturnSearchPageWithQuery() {
 		assertThat((nextPageable.getPageNumber())).isEqualTo(1);
 	}
 
+	@Test // #1917
+	void shouldReturnAllDocumentsWithUnpagedQuery() {
+
+		List<SampleEntity> entities = createSampleEntities("abc", 20);
+		repository.saveAll(entities);
+
+		SearchHits<SampleEntity> searchHits = repository.searchWithQueryByMessageUnpaged("Message");
+
+		assertThat(searchHits).isNotNull();
+		assertThat((searchHits.getTotalHits())).isEqualTo(20);
+		assertThat(searchHits.getSearchHits()).hasSize(20);
+	}
+
 	private List<SampleEntity> createSampleEntities(String type, int numberOfEntities) {
 
 		List<SampleEntity> entities = new ArrayList<>();
@@ -1766,6 +1779,9 @@ public interface SampleCustomMethodRepository extends ElasticsearchRepository<Sa
 
 		@Query("{\"match\": {\"message\": \"?0\"}}")
 		SearchPage<SampleEntity> searchWithQueryByMessage(String message, Pageable pageable);
+
+		@Query("{\"match\": {\"message\": \"?0\"}}")
+		SearchHits<SampleEntity> searchWithQueryByMessageUnpaged(String message);
 	}
 
 	/**

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

@@ -31,6 +31,7 @@
 import java.lang.Long;
 import java.util.Arrays;
 import java.util.List;
+import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
 import org.elasticsearch.ElasticsearchStatusException;
@@ -515,16 +516,38 @@ public void derivedFinderMethodReturningMonoShouldBeExecutedCorrectly() {
 	}
 
 	@Test // DATAES-519
-	public void annotatedFinderMethodShouldBeExecutedCorrectly() {
+	void annotatedFinderMethodShouldBeExecutedCorrectly() {
 
-		bulkIndex(SampleEntity.builder().id("id-one").message("message").build(), //
-				SampleEntity.builder().id("id-two").message("test message").build(), //
-				SampleEntity.builder().id("id-three").message("test test").build()) //
-						.block();
+		int count = 30;
+		SampleEntity[] sampleEntities = IntStream.range(1, count + 1)
+				.mapToObj(i -> SampleEntity.builder().id("id-" + i).message("test " + i).build()).collect(Collectors.toList())
+				.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 -> SampleEntity.builder().id("id-" + i).message("test " + i).build()).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();
 	}
 
@@ -572,6 +595,9 @@ interface ReactiveSampleEntityRepository extends ReactiveCrudRepository<SampleEn
 		@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);