gremlin-scala | Scala wrapper for Apache TinkerPop 3 Graph DSL | Graph Database library

I believe Neptune may not support list properties on vertices as per this documentation: https://docs.aws.amazon.com/neptune/latest/userguide/access-graph-gremlin-differences.html

To test this, you could try running the same code against gremlin-server or some other implementation

For neo4j-java-driver I missed the following import to make it work. A more complete list of import you need can be found here.

Why do you need extension method toVertex?

Doesn't this work just like

It is indeed dependent on the implementation. You are using TinkerGraph which can in turn store any Java object so you're free to put whatever you like in there:

Short of using Object Graph Mapping frameworks, I think it might be best to use a Map based argument to your constructor for Student and then write your Gremlin so that it returns a Map that fits the expected format. For example, consider your sample graph (when asking Gremlin questions it's best to include a little sample graph creation script that can be pasted into a console):

You should be using mgmt object to build the schema, not the graph object. You also need to make sure to mgmt.commit() the schema updates.

If you go to the Gremlin-Scala GitHub page you'll see that the current version is "3.3.1.1" and that

Typically you just need to add a dependency on "com.michaelpollmeier" %% "gremlin-scala" % "SOME_VERSION" and one for the graph db of your choice to your build.sbt (this readme assumes tinkergraph). The latest version is displayed at the top of this readme in the maven badge.

It is not a surprise that the APi has changed when the major version of the library is different. If I change your first dependency as

I think that syntax is incorrect. Change: