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Questions tagged [gremlin]

Gremlin is the graph traversal language and virtual machine of Apache TinkerPop™

Gremlin is a graph traversal language and virtual machine, developed by Apache TinkerPop. Gremlin is designed to work with any TinkerPop-enabled graph system, such as Titan, OrientDB, Neo4j, RDF stores like Stardog and Blazegraph, and others.

For more information, see the most recent reference documentation for TinkerPop.

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In Gremlin, how can one query vertices where one property value is greater than another property value?

I'm sure this is straightforward, but I'm not sure how to do it. I have vertices, with a certain label, which have two integer properties. Let's call them integer1 and integer2. I simply want to query for all vertices where integer2 is greater than…
Amit A.
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Convert string command of Gremlin to executable

I have created a long Gremlin chained command as a string. What is the best way to execute it in NodeJS or Python? g.addV("person"). property(id, 1). property("name", "marko"). property("age", 29).as("1"). addV("person"). property(id, 2). …
Hammad Ali Khan
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Gremlin, javascript: where is the function "valueMap()" imported from?

I am using es6 on nodejs, and am trying to execute the project() step in a gremlin query. As part of the projection, I want to extract the properties. Using gremlin console I would use valueMap() to get the properties. However, when I attempt this…
Joel Stevick
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Gremlin: The traversal source [g] for alias [g] is not configured on the server

I'm using a Docker instance for my janusGraph database and being very specific; I use the following Docker image: https://github.com/sunsided/janusgraph-docker The image works OK, except as soon as I get rid of row number 12 in this groovy file:…
Erik van de Ven
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Traditional pdf indexing solution compared to graph-based version

My intention is to index an arbitrary directory containing pdf files (among other file types) with keywords stored in a list. I have a traditional solution and I heard that graph based solutions using e.g. SimpleGraph could be more elegant/efficient…
pdvsofismo
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How to collect all vertex and edge properties along path, with Gremlin

Here's a really simple query: g.V('customerId').out().path() The JSON output of this is { "requestId":"96b26c1d-d032-2004-d36e-c700bd6db2a2", "status":{ "message":"", "code":200, "attributes":{ …
Wendell Blatt
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Gremlin-server create a graph by loading data from csv files from gremlin-python

I found a guide for creating a graph using csv data files using groovy. (https://github.com/vsantosu/gremlin-importer/wiki/CSV-import-guide) Say I want to create this marvel superheroes graph (or any graph for the matter) on gremlin-server using…
Tushar Aggarwal
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GroupCount order by

The Unit test code from the simplegraph-core testsuite below displays the region count of airports but it is not ordered as I would have expected. The result starts with: NZ-BOP= 3 MZ-A= 1 MZ-B= 1 IN-TN= 5 MZ-N= 1 PW-004= 1 MZ-I= 2 BS-FP= …
Wolfgang Fahl
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Gremlin.NET: Execute queries using .Next() raises NullReferenceException

Starting from the Azure Cosmos DB Graph API example: https://github.com/Azure-Samples/azure-cosmos-db-graph-gremlindotnet-getting-started I am interested in using Gremlin.NET (the example uses version 3.2.7) to execute queries using the C# classes…
Chris
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How to use a UUID as id in Gremlin?

I'm adding verticles like this: g.addV("foobar").property("id", 1).property(...etc... How can I set a property with a uuid instead of an integer id?
Bob van Luijt
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Wildcard or "LIKE" search in azure cosmos db with Gremlin Graph API

I'm trying to search for vertices in a kind of wildcard search. In SQL it would be: "where name like '%abc%'". Neither Gremlin graph traversal nor SQL-queries support it. The use case is to filter a 1:n dependency, e.g. "Show me all my customers…
user3151341
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Use of store and select keywords in gremlin

Im new to gremlin. i followed the document on tinkerpop3. But i couldn't understand the use of store and select keywords.. Can anyone explain it simply?
vineeth
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What is the use of double underscore in repeat() or other steps in Tinkerpop Gremlin?

I have noticed double underscore being used in some step functions in Tinkerpop Gremlin 3.3. Could someone please tell why we use this double underscore with an example ? I could not find enough information about this in the documentation.
livetolearn
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CosmosDB creation - API option (SQL vs Graph)

I'm interested in using the Azure CosmosDB for it's Graph capability. Looking through the docs i saw that it sores graph vertices and edges as JSON documents (with an agreed schema) and so it can be accessed as a plain old DocumentDB. Taking this…
RazvanG
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Gremlin - How do find vertices with 'null' property?

Let's say I have vertices with label reviewer and property name. I can query for 'John Smith' with: g.V().hasLabel('reviewer').has('name', eq('John Smith')) But I cannot query for null 'name' with: g.V().hasLabel('reviewer').has('name',…
Glide
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