Reactive client is initialised with an invalid (`null`) database selection.

[mrksph]

Hi,

I'm experiencing issues when upgrading SDN from 6.0.3 (included with spring-data-starter-neo4j 2.4.2) to 6.2.1 (either via dependencyManagement or direct dependency)

When I run the app I get the following error message:

The provided database selection provider differs from the Neo4jClient's one.

If I try to upgrade to 6.1.x instead I get

The provided database selection provider differs from the ReactiveNeo4jClient's one.

[mrksph]

I think the first error might be related to the fact that SDN 6.2.x requires Spring 5.3.16 https://docs.spring.io/spring-data/neo4j/docs/current/reference/html/#dependencies.spring-framework

But I can't find which version of Spring Framework is needed for SDN 6.1.X

Are there any plans on implementing template.saveAs() for SDN 6.0.X?

Thank you

[mrksph]

After trying to update Spring Boot 2.4.2 to 2.5.x and 2.6.x finally I made it work upgrading to Spring Boot 2.4.13 which brings Spring's spring-core 5.3.13 which seems enough to make SDN work.

Another issue I'm still experiencing is that my @DataNeo4jTest won't run as it fails to load Application Context with the same error as my first comment.

@DataNeo4jTest
@ActiveProfiles("test")
public class ThingRepositoryTest {

    @Autowired
    private ThingRepository repository;

    @Test
    public void test() {
        Optional<Thing> e = repository.findByCode("CODE");
        Assertions.assertNotNull(e.get());
    }
}

And this is the error message

The provided database selection provider differs from the ReactiveNeo4jClient's one.

Note how it tries to load the ReactiveNeo4jClient even though I'm using the imperative repositories.

Another thing to note is that it looks like it's ignoring my @activeprofiles("test) annotation because it is loading some configurations that only exist in my src/resources/application.yml file

[meistermeier]

Starting with 6.1.x we pushed the ability to use the database selection down to the Neo4jClient. It was only available in the Neo4jTemplate before and for the Neo4jClient you had to define the database in its fluent API.

I assume that you are defining them in several places. Most likely: You are defining the Neo4jTemplate yourself and providing the databaseSelection.

A reproducer with your / a similar configuration would be helpful.

Side note: I do not know what exactly happens in your configuration, but the ReactiveNeo4jClient message will only appear in the reactive Neo4jClient.

[mrksph]

Thanks for the reply, @meistermeier .

Yes, I'm autowiring the Neo4jTemplate in several places in our application. The thing is I only get that error when running our tests, even more so, when I only run that test because we also have some unit tests that run without any problems.
Also, when starting the application we don't get any errors.

Ok, I'll try to make a reproducer for you guys. I'll be updating this comment as soon as I have it ready.

Thank you.

[meistermeier]

Is there any progress on a reproducer or did you find the problem in your test code?

[mrksph]

Hi @meistermeier, thanks for reaching out.
We've been busy these days so we couldnt put much time into this issue.
We did try to reproduce the error making a project from scratch but unsurprisingly, it worked so we have to check which configuration might be messing things up.