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ATApache TinkerPop

•Created by cdegroc on 1/20/2025 in #questions

Hot reloading of SSL certificates in gremlin-server

a JIRA might be nice actually for a change of this type. thanks!

14 replies

ATApache TinkerPop

•Created by cdegroc on 1/20/2025 in #questions

Hot reloading of SSL certificates in gremlin-server

thanks for taking the time to submit that

14 replies

ATApache TinkerPop

•Created by marti.sant on 3/11/2025 in #questions

Gremlin comparison between one node's own properties

it's been a fairly long standing ask to allow that kind of syntax. while it looks simple to sort of just add it in there, it's actually relatively complicated. Hopefully, a solution with present itself in 4.x.

8 replies

ATApache TinkerPop

•Created by Daniel Weber on 3/6/2025 in #questions

Is there an ETA on Neptune returning full element data?

@Arthur from gdotv i assume materializeProperties would be useful to use from a Neptune perspective?

9 replies

ATApache TinkerPop

•Created by Daniel Weber on 3/6/2025 in #questions

Is there an ETA on Neptune returning full element data?

still working on getting materializeProperties into Neptune for websockets. not sure what the ETA is just yet i'm afraid.

9 replies

ATApache TinkerPop

•Created by marti.sant on 3/5/2025 in #questions

Partition strategy with an anonymous graph traversal and aliasing

I'm not sure what's wrong there, but I'll point out a few things. I recast your query as though written against the modern graph which makes it easy to test. I used 3.7.3:

gremlin> g.V().as('a').both().as('b').
......1>   and(select('a').values('age').as('left').
......2>       select('b').values('age').as('right').
......3>       where('left', gt('right')))
==>v[2]
==>v[1]

gremlin> g.V().as('a').both().as('b').
......1>   and(select('a').values('age').as('left').
......2>       select('b').values('age').as('right').
......3>       where('left', gt('right')))
==>v[2]
==>v[1]

i don't seem to get an error like you do. so that's noteworthy. what version are you using? next, i do note that you're query is a bit complex and not as Gremlin idiomatic as it could be. I think your query would be better written structurally as:

gremlin> g.V().as('a').both().as('b').
......1>   where('a', gt('b')).by('age')
==>v[2]
==>v[1]

gremlin> g.V().as('a').both().as('b').
......1>   where('a', gt('b')).by('age')
==>v[2]
==>v[1]

or for your specific traversal:

g.V().HasLabel("Person").As("a").
  In("Owns").HasLabel("Cat").As("b").
  Where("a", gremlingo.P.Gt("b")).
    By("lazyness_level").
    By("activity_level")

g.V().HasLabel("Person").As("a").
  In("Owns").HasLabel("Cat").As("b").
  Where("a", gremlingo.P.Gt("b")).
    By("lazyness_level").
    By("activity_level")

I'd be curious if that works in your case. As for the specific traversal you supplied, I guess I would see what happens if you remove the PartitionStrategy to see if it allows the query to run. If it works without that error, it doesn't mean that the PartitionStrategy isn't associated with the anonymous traversal, but it does mean that the strategy is likely injecting something into query that is somehow fooling with the as() labelling to prevent the where() from finding it.

5 replies

ATApache TinkerPop

•Created by masterhugo on 2/10/2025 in #questions

Gremlin python trying to connect Neptune WS when is down

i'd like to be sure i understand the problem here. is the problem that the driver times out at a particular point but then somehow the lambda continues to wait doing nothing until it hits its timeout period?

39 replies

ATApache TinkerPop

•Created by Arthur from gdotv on 1/20/2025 in #questions

Neptune, Gremlin Java & Bindings

the translators in 4.x will generate grammar compliant gremlin (in addition to the programming language verisons).

25 replies

ATApache TinkerPop

•Created by Arthur from gdotv on 1/20/2025 in #questions

Neptune, Gremlin Java & Bindings

https://tinkerpop.apache.org/docs/current/reference/#gremlin-javascript-differences

25 replies

ATApache TinkerPop

•Created by Arthur from gdotv on 1/20/2025 in #questions

Neptune, Gremlin Java & Bindings

....dont think it's identical though.

25 replies

ATApache TinkerPop

•Created by cdegroc on 1/20/2025 in #questions

Hot reloading of SSL certificates in gremlin-server

i dont think there's any way to currently do the reloads, so something would have to be built. @Kennh any thoughts on this one?

14 replies

ATApache TinkerPop

•Created by Arthur from gdotv on 1/20/2025 in #questions

Neptune, Gremlin Java & Bindings

it will be nice when we have the new translators based on the grammar available. i think it will be easier to extend and will definitely produce better translations.

25 replies

ATApache TinkerPop

•Created by Arthur from gdotv on 1/20/2025 in #questions

Neptune, Gremlin Java & Bindings

@G.V() - Gremlin IDE (Arthur) with a small modification, it's possible to change the existing translators in 3.x to replace variable placeholders for the values in the bindings. adding this override to GroovyTranslator.DefaultTypeTranslator:

        @Override
        protected Script convertToScript(final Object object) {
            if (object instanceof Bytecode.Binding) {
                return super.convertToScript(((Bytecode.Binding) object).value());
            } else {
                return super.convertToScript(object);
            }
        }

        @Override
        protected Script convertToScript(final Object object) {
            if (object instanceof Bytecode.Binding) {
                return super.convertToScript(((Bytecode.Binding) object).value());
            } else {
                return super.convertToScript(object);
            }
        }

seems to make it work how you want:

gremlin> g = TinkerFactory.createModern().traversal()
==>graphtraversalsource[tinkergraph[vertices:6 edges:6], standard]
gremlin> b = new org.apache.tinkerpop.gremlin.process.traversal.Bindings()
==>bindings[main]
gremlin> t = g.V().has('name',b.of("n","josh"));[]
gremlin> translator = GroovyTranslator.of("g")
==>translator[g:gremlin-groovy]
gremlin> translator.translate(t).getScript()
==>g.V().has("name","josh")

gremlin> g = TinkerFactory.createModern().traversal()
==>graphtraversalsource[tinkergraph[vertices:6 edges:6], standard]
gremlin> b = new org.apache.tinkerpop.gremlin.process.traversal.Bindings()
==>bindings[main]
gremlin> t = g.V().has('name',b.of("n","josh"));[]
gremlin> translator = GroovyTranslator.of("g")
==>translator[g:gremlin-groovy]
gremlin> translator.translate(t).getScript()
==>g.V().has("name","josh")

I guess from your perspective that means you create your own extension to DefaultTypeTranslator then hand it to GroovyTranslator.of("g", <YourTypeTranslator>). i think that would work. The 4.x translators based on the grammar (and not bytecode) are designed to allow this sort of translation more directly, but that's not something you should have to worry about for a while i guess.

25 replies

ATApache TinkerPop

•Created by b4lls4ck on 7/9/2024 in #questions

I am unsure on how to use Python to add graphs to JanusGraph

an easy thing to try is to test your connection/graph with Gremlin Console and see what happens: https://tinkerpop.apache.org/docs/current/reference/#connecting-via-console

56 replies

ATApache TinkerPop

•Created by b4lls4ck on 7/9/2024 in #questions

I am unsure on how to use Python to add graphs to JanusGraph

i'm not sure what is amiss now if you see that "g" is configured via the logs and dont see any other errors/warnings on server startup. that's a bit strange. it should work under those conditions

56 replies

ATApache TinkerPop

•Created by b4lls4ck on 7/9/2024 in #questions

I am unsure on how to use Python to add graphs to JanusGraph

you need next() (i.e. a terminator step) to trigger the traversal. without it, you wont send the request to the server, so it makes sense that removing next() doesnt' produce an error, but then it wont produce anything else

56 replies

ATApache TinkerPop

•Created by b4lls4ck on 7/9/2024 in #questions

I am unsure on how to use Python to add graphs to JanusGraph

that looks like a problem with java compatibility. what version of java are you using?

java -version

java -version

i'd prefer 17 if possible.

56 replies

ATApache TinkerPop

•Created by b4lls4ck on 7/9/2024 in #questions

I am unsure on how to use Python to add graphs to JanusGraph

i think you should check in on the output of the startup of Gremlin Server. it should show a line like:

[INFO] ServerGremlinExecutor - A GraphTraversalSource is now bound to [g] with ...

If you don't see that then you might have some kind of error in startup that is preventing your access to "g".

56 replies

ATApache TinkerPop

•Created by fycoder on 12/29/2024 in #questions

How to dynamically add custom Steps at runtime?

You can use Groovy for all manner of trickery (AST manipulation, basic metaprogramming APIs, etc), but I'd take care with depending on it given the security risks associated with it. TinkerPop has been slowly moving away from it, first with bytecode based requests and more currently with the Gremlin ANTLR grammar. There is a general consensus that the latter will ultimately replace groovy/bytecode going forward into the future. I'm not sure if any of that impacts your decisions on how to maintain your service using 3.5.x but I thought it was important to share.

7 replies

ATApache TinkerPop

•Created by Valentyn Kahamlyk on 12/23/2024 in #questions

Graph computer question

i'd say this is the bug:

gremlin> g.V(1,1).count()
==>2

gremlin> g.V(1,1).count()
==>2

i wonder when that got introduced.......

4 replies

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