Answers to: Getting error when following the REST API guide

Answer by sorin

sorin — Wed, 15 Apr 2020 03:44:48 -0400

Turns out it's a bug on Mac Designer v7 and it works on Windows

Comment by Reguel Wermelinger on sorin's question

Reguel Wermelinger — Tue, 24 Mar 2020 10:24:49 -0400

Thanks for testing @sorin

No, working on LTS 8 towards a 7.3.1 engine is not recommended. Some models are not compatible (e.g. Process.mod format changed).

But I'd insist that the customers migrates to the LTS version. Leading Edge release are out of support when the next release is available. So only a switch to the LTS train gives you a stable tested version. Especially security issues will become an important issue in the near future...

Comment by sorin on sorin's question

sorin — Tue, 24 Mar 2020 09:17:04 -0400

It works in 8.0.3 on Mac, I've just downloaded it and tested. Is there a way to work in 8.0.3 designer and run on 7.3.1 engine afterwards? Are they compatible like that?

Comment by Reguel Wermelinger on sorin's question

Reguel Wermelinger — Tue, 24 Mar 2020 08:28:35 -0400

Yes, they should work as they did back then. To put things right, the welcome page project importer relies upon our public maven repositories - so in theory these artifacts could have changed. Even so, we run integration tests against are demos - so a fundamental break should be early detected and never reach a customer.

... that's why I am asking about the Mac Designer. There are/were issues on the Mac Betas related to the REST stack. (caused by path issues). So if there is a problem that persist in a recent LTS version, we can fix something.

Comment by sorin on sorin's question

sorin — Tue, 24 Mar 2020 07:27:05 -0400

I am on designer version 7.3.1 to match our customer's engine version. But the ConnectivityDemos are the one that come from the Designer welcome page, not the ones on your Git repo, so I would have expected them to work, as they were shipped with version of the designer.

Comment by Reguel Wermelinger on sorin's question

Reguel Wermelinger — Tue, 24 Mar 2020 07:25:32 -0400

I can't reproduce the issue with the ConnectivityDemos on the LTS train. So it could be dated leading edge version which contains an unknown bug.

But if none of the ConnectivityDemos work on your machine - I'd assume that it related to the Mac Designer. Or did you switch to a non BETA designer already?

Comment by sorin on sorin's question

sorin — Tue, 24 Mar 2020 05:30:38 -0400

By the way, I imported the ConnectivityDemos project from the welcome screen and I'm trying to call http://localhost:8081/ivy/api/designer/persons or http://localhost:8081/ivy/api/ConectivityDemos/persons and I get the same error

Comment by sorin on sorin's question

sorin — Tue, 24 Mar 2020 05:09:14 -0400

I have followed the tutorial verbatim, I have a class in the src folder, annotated with @Path("something") and then 2 methods in the class annotated, one with @GET, one with @POST and both with @Produces(MediaType.APPLICATION_JSON). All annotations are from the JAX-RS package (java.ws.rs)

Comment by Andreas Rusch on sorin's question

Andreas Rusch — Tue, 24 Mar 2020 04:32:31 -0400

Sounds like a ManagedBean scope problem. Do you use one with just @RequestScope?