DATAGRAPH-1407 - Make consistent use of mayBeReadWrite for deciding to clear the session or not.

This updates to Neo4j-OGM 3.2.18 and ensures that read only queries don’t clear the session and in the process of doing that would prevent legit updates to relationships.

pom.xml

@@ -41,7 +41,7 @@
 
 		<project.type>multi</project.type>
 
-		<neo4j.ogm.version>3.2.17</neo4j.ogm.version>
+		<neo4j.ogm.version>3.2.18</neo4j.ogm.version>
 		<springdata.commons>2.3.6.BUILD-SNAPSHOT</springdata.commons>
 	</properties>
 

spring-data-neo4j/src/test/java/org/springframework/data/neo4j/examples/movies/MoviesIntegrationTests.java

@@ -673,6 +673,52 @@ public class MoviesIntegrationTests {
 		assertThat(foundUser.isEmpty()).isTrue();
 	}
 
+	@Test // DATAGRAPH-1407
+	public void shouldRemoveGenreFromUserDespiteReadonlyCustomQuery() {
+		transactionTemplate.execute(new TransactionCallbackWithoutResult() {
+			@Override
+			public void doInTransactionWithoutResult(TransactionStatus status) {
+				User michal = new User("Michal");
+				Genre drama = new Genre("Drama");
+				michal.interestedIn(drama);
+
+				userRepository.save(michal);
+
+				michal.notInterestedIn(drama);
+
+				userRepository.getAllUsers();
+				userRepository.save(michal);
+			}
+		});
+
+		assertThat(graphDatabaseService)
+				.containsNode("MATCH (m:User:Person {name:'Michal'})," + "(g:Genre {name:'Drama'})" +
+						" WHERE NOT (m)-[:INTERESTED]->(g) RETURN m AS n");
+	}
+
+	@Test // DATAGRAPH-1407
+	public void shouldRemoveGenreFromUserDespiteReadonlyCustomQueryWithQueryResult() {
+		transactionTemplate.execute(new TransactionCallbackWithoutResult() {
+			@Override
+			public void doInTransactionWithoutResult(TransactionStatus status) {
+				User michal = new User("Michal");
+				Genre drama = new Genre("Drama");
+				michal.interestedIn(drama);
+
+				userRepository.save(michal);
+
+				michal.notInterestedIn(drama);
+
+				userRepository.retrieveAllUsersAndTheirAges();
+				userRepository.save(michal);
+			}
+		});
+
+		assertThat(graphDatabaseService)
+				.containsNode("MATCH (m:User:Person {name:'Michal'})," + "(g:Genre {name:'Drama'})" +
+						" WHERE NOT (m)-[:INTERESTED]->(g) RETURN m AS n");
+	}
+
 	private void createUserForContainsTest() {
 		User user = new User("Somebody");
 		Set<String> emailAddresses = new HashSet<>();