Question about using a multi-value/set VertexProperty about goblin HOT 6 CLOSED

Hi @marciodebarros. I am super busy this week and I haven't looked closely at this, but I can maybe get you started. Yes, a set card property in goblin expects to be assigned a set. After the set is assigned, then you can add. You should be able to initialize with say, a string literal, and it will wrap it up in a set for you.

As far as the doubled IPs in the set, you shouldn't be able to do that. I will look more closely at this.

The server error looks like you are jusing Janus graph and you have not defined a set card property in your schema...this is a requirement. If you are not using Janus, please let me know.

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Hi @davebshow I am indeed using Janus. Regarding the schema, I haven't defined one as I was hoping that would get defined implicitly. Is this something that Goblin currently supports or will I need to do from Gremlin console ? Thank you.

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Made any progress here? You can define the schema either in the gremlin console or by submitting a string using the client provided by aiogremlin. Automatic schema creation does not work (AFAIK) with multi-card properties

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Hi Dave. Yes, I defined the schema using the console, but now I am running into a new (expected) issue which I need to resolve before I can validate the .set() issue. Now because I have defined a Unique constraint on some of my Vertices, when I try to add a existing vertex, I get an constraint violation error. In an OGM I was using for Neo4j there was an "add or update" method which would handle that. Does TinkerPop/JanusGraph have a similar option, or would I have to implement it myself? Would this be something that you would eventually consider for implementation on Goblin ?

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I'm also interested in an create_or_update functionality it looks like this can be accomplished in one go:

e.g.

g.v('userId').fold().coalesce(unfold(), addV('users').property('id', 'userId'))

But I am not sure how to best do this via goblin's session.

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Do you mean that you would like to issue a traversal like that using Goblins session? Or integrate that functionality into Goblin? The traversal should be straightforward:

# all required imports +
from gremlin_python import statics
# loading statics enables __.unfold() to be unfold() etc.
statics.load_statics(globals())

#... in async function

session = await app.session()
await session.g.V('userId').fold().coalesce(unfold(), addV('users').property('id', 'userId')).iterate()

That is untested, but something like that should work.

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