How to create Gremlin graphs from C#.Net code?

Question

I am trying to integrate my C#.Net Project with Azure CosmosDb using Gremlin query language. I need help to create a graph from C# code instead of manually creating it from the Server. Any suggestions?

Have you reviewed the documentation located here: learn.microsoft.com/en-us/azure/cosmos-db/… It has many C# examples Cheers Kelvin — Kelvin Lawrence
– Kelvin Lawrence, Commented May 11, 2018 at 0:29

Creyke · Accepted Answer · 2018-05-10 21:08:04Z

2

Unfortunately at this time, I am not aware of a strongly typed .NET library available for Gremlin which can directly connect to Cosmos.

However, it is quite straightforward to write a wrapper which executes common gremlin functions in C#.

Here's an example of a light ORM I started recently: https://github.com/odds-bods/CosmicGraph/blob/master/CosmicGraph/CosmicGraphClient.cs

var vertex = await cosmic.AddVertexIfNotExistsAsync(
    new PersonVertex
    {
        Id = Guid.Empty.ToString(),
        Label = "Fred Smith",
        FirstName = "Fred",
        LastName = "Smith"
    }
);

Ideally a functional API (mirroring the Gremlin API) would be better for larger projects, however this would require more work.

answered May 10, 2018 at 21:08

Creyke

2,1172 gold badges14 silver badges19 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

dotnetnoobie · Accepted Answer · 2018-07-25 01:24:00Z

1

Gremlin.Net.CosmosDb

Helper library when using Gremlin.Net in conjunction with a Cosmos DB graph

https://github.com/evo-terren/Gremlin.Net.CosmosDb

Use Strongly-Typed Vertex and Edge Objects Create strongly-typed vertex and edge objects to define properties and help with deserialization.

using Gremlin.Net.CosmosDb.Structure;

[Label("person")]
public class PersonVertex : VertexBase
{
    public string Name { get; set; }

    public DateTimeOffset Birthdate { get; set; }
}

var query = g.V<PersonVertex>().Has(v => v.Name, "Todd").Property(v => v.Birthdate, DateTimeOffset.Now);
var response = await graphClient.QueryAsync(query);

foreach (var vertex in response)
{
    Console.WriteLine(vertex.Birthdate.ToString());
    Console.WriteLine(vertex.Name);
}

edited Jul 25, 2018 at 1:24

answered Jul 24, 2018 at 16:55

dotnetnoobie

112 bronze badges

3 Comments

Inder Over a year ago

kindly consider explaining your answer in a greater detail

James Over a year ago

I looked at this package as well as Gremlinq. The problem I have with this approach is it requires knowledge of edges at design time. Also it's better to have generic vertices with a "type" label rather than a strongly-typed PersonVertex.

Stanislas Over a year ago

github.com/evo-terren/Gremlin.Net.CosmosDb has been abandoned by the author. The author recommends using github.com/ExRam/ExRam.Gremlinq.

Avner Levy · Accepted Answer · 2020-04-17 05:12:24Z

1

Another option that looks active and supports several graph databases is ExRam.Gremlinq

answered Apr 17, 2020 at 5:12

Avner Levy

6,7879 gold badges58 silver badges106 bronze badges

Collectives™ on Stack Overflow

How to create Gremlin graphs from C#.Net code?

3 Answers 3

Comments

3 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

3 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related