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Questions tagged [amazon-neptune]

For questions related to Amazon Neptune, a graph database service which supports both Property Graph and RDF graph models, as well as their respective query languages Apache TinkerPop Gremlin, openCypher and SPARQL.

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How best to model data in AWS Neptune

I'm currently evaluating AWS Neptune as a potential graph database (specifically comparing it to Azure Cosmos Graph DB). The scenario is that I have a bunch of test data which I'm adding with the bulk loader and will then run some benchmarking tests…
infl3x
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Can we do type cast in gremlin?

I have two vertices with Label='Node'. Both vertices has name and value properties. One vertex value is numeric and other vertex value is string. I want to search all vertices with value as "something". Since one of the vertices is numeric, it is…
Deepak KS
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How to find parent vertex of two child vertices with condition in GREMLIN?

I have the following graph: V1 / | \ p1 p2 p3 I want to find parent vertex (V1), if I have p1 and p3 vertices matching the condition in GREMLIN. I have around 25 child nodes for a single parent. And I need to find the…
Deepak KS
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How to add multiple edges from one vertex in a single traversal

I have three user vertices. Tom and Mike follow Bob. g.addV("user").property(single,"name", "bob") g.addV("user").property(single,"name", "tom") g.addV("user").property(single,"name", "mike") g.V().hasLabel("user").has("name",…
Fook
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gremlin - how to multiply "carried" properties

Given the following graph: vertices of type "Companies" holding a "name" property edges of type "Shareholder" holding a "holding" property . Definition: Beneficiary : Company with direct or indirect holding in the company Graph example…
yoty66
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Meta Properties in AWS Neptune

In AWS Neptune I was exploring to add meta properties (properties for properties) to vertices as described here. Upon trying I found that Neptune throws an error: Req -…
samairtimer
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gremlin convert string propery to numeric property

Currently I have a graph having timestamp as string property g.V().order().by('timestamp', '10') This causes issues while sorting as string sorting is different from numeric sorting. String sorting : 1, 10, 2 Numeric sorting : 1, 2, 10 Is there…
mmr25
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Gremlin groupcount by edges and then also select other properties besides the count itself

I'm modeling a social network where users follow others. I'm trying to generate a list of potential users to follow and order it by those who are also followed by the people I'm following (let's call these 'mutualFollowers' for lack of a better…
Will
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Query Named Graph with SPARQL over REST HTTP

I was able to successfully populate Named Graph over HTTP REST as shown here https://docs.aws.amazon.com/neptune/latest/userguide/load-api-reference-load.html curl -d "@data.json" -H "Content-Type: application/json" -X POST…
Michael Z
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Gremlin: Which one is faster? within() or out().in()

I have a user search feature in my app where the searcher don't want to see some results, he does this by "blocking" a tag, when blocking a tag all users that are "subscribed" to that tag will be ignored in his search results. I'm writing the query…
fermmm
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One to One Relationship in AWS Neptune DB

While mapping a relational OO model, I came across a scenario wherein it is required to maintain a One-to-One relation between vertices. Is it possible to restrict the cardinality of edges using labels in AWS Neptune the way it is done from Vertex…
samairtimer
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Running into uvloop issues with Database queries from Rasa-X?

I'm trying to make a simple query to my amazon neptune database, from Rasa-x. Here is the code from my actions.py: class ActionQueryDietary(Action): def name(self) -> Text: return "action_query_dietary" def run(self, dispatcher:…
Stephan
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unable to connect to neptune database instance from tinkerpop

I am following this guide https://docs.aws.amazon.com/neptune/latest/userguide/access-graph-gremlin-console.html to connect to my Neptune database but as mentioned in step 7 to configure Neptune endpoint hosts: [your-neptune-endpoint], I was unable…
Sundeep Pidugu
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AWS Neptune workbench visualisation

I am using Jupter notebook on AWS Neptune to query data from the graph. Is it possible to set the colour of nodes with specific label to different colour? For eg, can I set the node colour to red if the node label is person and set the node colour…
Arun Vasu
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Gremlin (Neptune) somewhat complex query doesn't show edges properties

I have a set of data in my DB (AWS Neptune), and I query it using Gremlin (NodeJS). The data looks like this and I have a query that looks like this: g.V().hasLabel('group').inE('belongs_to') .outV().has('user_id',…
E.T
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