Gremlin usage in Neo4j

[lalwani_ritu260]

Hi,

As per the project requirement I want to use Neo4j with gremlin instead of cypher.
I found the documentation on Tinkerpop and also tried to use that. But after exploring it further, I found that the plugin is using very older version of Neo4j.

So is there any other way by which I can use the latest version of Neo4j and use gremlin as the query language.

[Joel]

some info on that here

stackoverflow.com

Neo4j 4.x gremlin support

neo4j, gremlin

asked by Avner Levy on 09:22PM - 20 May 20 UTC

[lalwani_ritu260]

Hi Joel,

Thank you for the response.
I have gone through the link that you shared. But still I am confused about the latest release of Tinkerpop.
So do you have any idea when Tinkerpop will release next version of neo4j-tinkerpop-api-impl which will support Neo4j version 4.x?

[clem]

If you look at the GitHub URL:

github.com

neo4j-contrib/neo4j-tinkerpop-api-impl

Implementation of Apache Licensed Neo4j API for Tinkerpop3

You'll see it's actually a Neo4J project. So, I believe it's more of when is Neo4J (or somebody in the Neo4J development community) is going to modify the project to support the latest Neo4J release.

It is a known issue. See:

github.com/neo4j-contrib/neo4j-tinkerpop-api-impl

Add support for neo4j 4.0

opened 03:36PM - 30 Jan 20 UTC

fourier134949

Are there any plans to add the support to neo4j 4.0? The current supported version is 3.4.11 and it is actuallty...

One possibility to consider is to use Microsoft's Cosmos and Gremlin implementation if you really need Gremlin.

Unfortunately, this is the extent of my understanding (or conjecturing) of the situation. Sorry I can't be of more help.

[lalwani_ritu260]

Thank you so much Clem for the inputs!!
Actually the use of Neo4j is necessary.
So as of now I am exploring cypher instead of Gremlin.
But will wait for the neo4j support in the API.

[clem]

You may have a long wait for Gremlin. The Git Issue is almost 1 year old.

Out of curiosity why Gremlin? I've looked at it a little and it doesn't seem (to me) as nice as Cypher.

[clem]

After playing around with Gremlin a bit, I prefer Cypher. I think it looks cleaner. I think it's easier to think in terms of pictures: nodes () and relationships -[]-> than words.

From a semantic point of view, "Relationships" is more natural way of thinking than "Edges". Also,

Also, a big thing going for Cypher is that it is easily extensible with APOC. The APOC libraries are very rich.

[oliver_bauer]

Not sure if this helps, but

github.com

SteelBridgeLabs/neo4j-gremlin-bolt

Contribute to SteelBridgeLabs/neo4j-gremlin-bolt development by creating an account on GitHub.

seems to provide Gremlin-Support.

A short example could be

import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.*;
...

DatabaseManagementService managementService = new DatabaseManagementServiceBuilder(path)
  .setConfig(BoltConnector.enabled, true)
  .setConfig(BoltConnector.listen_address, new SocketAddress("localhost", 7687))
  .build();

Driver driver = GraphDatabase.driver("bolt://localhost:7687", AuthTokens.basic("admin", "admin"));

Neo4JElementIdProvider<?> vertexIdProvider = new Neo4JNativeElementIdProvider();
Neo4JElementIdProvider<?> edgeIdProvider = new Neo4JNativeElementIdProvider();
try (Graph graph = new Neo4JGraph(driver, null, vertexIdProvider, edgeIdProvider)) {
  GraphTraversalSource g = graph.traversal();
	        
  List<Object> list = g
    .V()
    .has("name", "Bruce Willis")
    .repeat(both().simplePath())
    .until(has("name", "Samuel L. Jackson"))
    .path().limit(1).unfold().toList();

But i am not sure how well it works in extended situations or if it is efficient...
Maybe someone has worked with this library and could share more insights?