Groovy (or Java) frontend Hello World example?

[Ash]

Hi,

I have been searching for nearly a week and have yet to find an example to work from.  Hoping someone will be able to point me in the right direction. As you can tell, I am new to Gremlin / Titan.

Ultimately what I want to do is the following (or open to suggestions):

Client (JSON) -> AWS Lambda -> Gremlin Server -> Titan-DynamoDB -> DynamoDB

As a POC, I'm trying to create a standalone client as a stand-in for the AWS Lambda step.  I have "Gremlin Console (remote) -> Gremlin Server -> Titan-DynamoDB -> DynamoDB" working fine.

So... How do I get the server to return either 1) an object I can serialize into GraphSON or 2) get the Gremlin Server to return GraphSON?

I am aware of the GraphSON serializer on the server but cannot seem to find an example of calling the Gremlin Server and getting GraphSON.  Or put another way, I see several serializers in the server config but do not understand how to specify one over another.

Can anyone point me to a simple Hello World Groovy (or Java) client -> Gremlin Server example?

Thank you!

-Ash

[Stephen Mallette]

I can imagine that you had trouble finding an example of that specific architecture, but there's documentation for usage of the driver itself for sure:

+ The "Connecting via Java" section of the reference documentation: http://tinkerpop.apache.org/docs/current/reference/#connecting-via-java

+ Perhaps use the gremiln-archetype-server to get started: http://tinkerpop.apache.org/docs/current/reference/#gremlin-archetypes

As for your serialization questions, when you construct the Cluster you just need to specify the serializer you want to use:

http://tinkerpop.apache.org/docs/current/reference/#_serialization

That documentation doesn't specify GraphSON serialization but you should get the general idea. For GraphSON basically do:

mapper = GraphSONMapper.build().version(GraphSONVersion.V2_0).create()

serializer = new GraphSONMessageSerializerV2d0(mapper)

cluster = Cluster.build()

                .serializer(serializer)

                .create()

btw, if there is no specific reason you have for wanting to use GraphSON, i would stick with the default of Gryo - it tends to be faster.

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[Ash]

Stephen,

Thank you for the pointers!

[Jason Plurad]

I think I created this using the gremiln-archetype-server

https://github.com/pluradj/titan-tp3-driver-example

On Fri, Mar 10, 2017 at 12:02 PM, Ash <ash.ho...@gmail.com> wrote:

Stephen,

Thank you for the pointers!

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