How to add multiple edges in a single gremlin query?

My scenario is to add multiple edges between vertices in a single query:

Assume the nodes below: These are the labels and ids I have

Users:

4100

Songs:

4200

4355

4676

I have to establish edges between these vertices

4100 --> 4200, 
4100 --> 4355, 
4100 --> 4676.

We can do it normally by creating single edge between node.it is not a efficient method if we want to create edge between more than 50 vertices at a time. I am using Tinkerpop 3.0.1.

Solution

If you have the vertex ids, it is very efficient to lookup by id. If you are using Gremlin Server, each request to the Gremlin Server is treated as a single transaction. You can pass the multiple statements in a Gremlin query on a single request (with bindings) rather than sending multiple requests. Separate the statements in the Gremlin query with semicolons.

l=[4200, 4355, 4676]; v=graph.vertices(4100).next(); l.each { v.addEdge("knows", graph.vertices(it).next()) }