Handle Query.isSorted in QueryUtils proxy.

Closes #4758
Original pull request: #4759

Author: mp911de

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/QueryUtils.java

@@ -23,6 +23,7 @@
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.bson.Document;
+
 import org.springframework.aop.framework.ProxyFactory;
 import org.springframework.data.mongodb.core.query.Collation;
 import org.springframework.data.mongodb.core.query.Query;
@@ -151,6 +152,15 @@ public DefaultSortingInterceptor(Document defaultSort) {
 		@Override
 		public Object invoke(@NonNull MethodInvocation invocation) throws Throwable {
 
+			if (invocation.getMethod().getName().equals("isSorted")) {
+
+				if (!defaultSort.isEmpty()) {
+					return true;
+				}
+
+				return invocation.proceed();
+			}
+
 			if (!invocation.getMethod().getName().equals("getSortObject")) {
 				return invocation.proceed();
 			}

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/AbstractMongoQueryUnitTests.java

@@ -37,12 +37,15 @@
 import org.mockito.junit.jupiter.MockitoSettings;
 import org.mockito.quality.Strictness;
 import org.springframework.data.domain.Limit;
+import org.springframework.data.domain.OffsetScrollPosition;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.ScrollPosition;
 import org.springframework.data.domain.Slice;
 import org.springframework.data.domain.Sort;
 import org.springframework.data.domain.Sort.Direction;
+import org.springframework.data.domain.Window;
 import org.springframework.data.mongodb.MongoDatabaseFactory;
 import org.springframework.data.mongodb.core.ExecutableFindOperation.ExecutableFind;
 import org.springframework.data.mongodb.core.ExecutableFindOperation.FindWithQuery;
@@ -329,6 +332,20 @@ void usesAnnotatedSortWhenPresent() {
 		assertThat(captor.getValue().getSortObject()).isEqualTo(new Document("age", 1));
 	}
 
+	@Test // GH-4758
+	void scrollUsesAnnotatedSortWhenPresent() {
+
+		createQueryForMethod("scrollByAge", Integer.class, ScrollPosition.class) //
+				.execute(new Object[] { 1000, ScrollPosition.keyset()});
+
+		ArgumentCaptor<Query> captor = ArgumentCaptor.forClass(Query.class);
+		verify(withQueryMock).matching(captor.capture());
+
+		Query query = captor.getValue();
+		assertThat(query.getSortObject()).isEqualTo(new Document("age", 1));
+		assertThat(query.isSorted()).isTrue();
+	}
+
 	@Test // DATAMONGO-1979
 	void usesExplicitSortOverridesAnnotatedSortWhenPresent() {
 
@@ -637,6 +654,9 @@ private interface Repo extends MongoRepository<Person, Long> {
 		@org.springframework.data.mongodb.repository.Query(sort = "{ age : 1 }")
 		List<Person> findByAge(Integer age);
 
+		@org.springframework.data.mongodb.repository.Query(sort = "{ age : 1 }")
+		Window<Person> scrollByAge(Integer age, ScrollPosition position);
+
 		@org.springframework.data.mongodb.repository.Query(sort = "{ age : 1 }")
 		List<Person> findByAge(Integer age, Sort page);
 
@@ -670,6 +690,7 @@ private interface Repo extends MongoRepository<Person, Long> {
 
 		@ReadPreference(value = "secondaryPreferred")
 		List<Person> findWithReadPreferenceByFirstname(String firstname);
+
 	}
 
 	// DATAMONGO-1872