Add author to changed classes. Remove integration test.

The test cannot be reproduced using hsqldb - the syntax causing the bug is not supported.
Closes spring-projects#2260

Author: TAndronicus

src/main/java/org/springframework/data/jpa/repository/query/QueryUtils.java

@@ -73,6 +73,7 @@
  * @author Mohammad Hewedy
  * @author Andriy Redko
  * @author Peter Großmann
+ * @author Jędrzej Biedrzycki
  */
 public abstract class QueryUtils {
 

src/test/java/org/springframework/data/jpa/repository/UserRepositoryTests.java

@@ -693,15 +693,6 @@ void readsPageWithGroupByClauseCorrectly() {
 		assertThat(result.getTotalPages()).isEqualTo(1);
 	}
 
-	@Test
-	void readsPageWithDenseRankClauseCorrectly() {
-
-		flushTestUsers();
-
-		Page<Integer> result = repository.findDenseRankByLastnameGrouped(PageRequest.of(0, 10, Sort.by(Order.desc("username"))));
-		assertThat(result.getTotalPages()).isEqualTo(1);
-	}
-
 	@Test
 	void executesLessThatOrEqualQueriesCorrectly() {
 

src/test/java/org/springframework/data/jpa/repository/query/QueryUtilsUnitTests.java

@@ -39,6 +39,7 @@
  * @author Florian Lüdiger
  * @author Grégoire Druant
  * @author Mohammad Hewedy
+ * @author Jędrzej Biedrzycki
  */
 class QueryUtilsUnitTests {
 

src/test/java/org/springframework/data/jpa/repository/sample/UserRepository.java

@@ -90,7 +90,7 @@ public interface UserRepository
 	 */
 	User findByEmailAddress(String emailAddress);
 
-	@Query("select u from User u left outer join u.manager as manager") // TODO: reuse
+	@Query("select u from User u left outer join u.manager as manager")
 	Page<User> findAllPaged(Pageable pageable);
 
 	/**
@@ -223,9 +223,6 @@ public interface UserRepository
 	@Query("select u.lastname from User u group by u.lastname")
 	Page<String> findByLastnameGrouped(Pageable pageable);
 
-	@Query(value = "select row_number() over (order by u.lastname) from user u", nativeQuery = true)
-	Page<Integer> findDenseRankByLastnameGrouped(Pageable pageable);
-
 	// DATAJPA-117
 	@Query(value = "SELECT * FROM SD_User WHERE lastname = ?1", nativeQuery = true)
 	List<User> findNativeByLastname(String lastname);