Questions tagged [gremlin-java]
14 questions
1
vote
1 answer
No signature of method exception after upgrading Apache Gremlin 3.6.2 to any newer version
This is an existing project that works properly with Apache Gremlin 3.6.2 but fails to pass unit tests after upgrading to any newer version of Gremlin - 3.6.3 or 3.6.4:
[2023-06-13T11:34:57,445][Warning] [{}] [o.a.t.g.s.o.AbstractEvalOpProcessor]:…
Rostislav Krasny
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- 3
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1
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1 answer
How to find the cardinality of property in apache tinkerpop Gremlin?
How to find the cardinality of property in apache tinkerpop Gremlin?
Is there any method to find the given property cardinality is SET or SINGLE?
Thirumal
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1
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1 answer
How to use java `OffsetDateTime` in apache tinkerpop gremlin?
The application can be accessed from a different timezone, so I am trying to store date time using class java.time.OffsetDateTime.
startTime: "1996-12-19T16:39:57-08:00",
endTime: "1996-12-19T16:39:57-08:00"
The application/API receives the time in…
Thirumal
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0
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1 answer
How To Connect To JanusGraph In Java with AnonymousTraversalSource
Problem
Why am I unable-to-connect to JanusGraph-Server on localhost:8182?
Using Java-17, TinkerPop3 Gremlin, and Janusgraph:latest.
Reproduction
Steps
Download-and-Install Docker (Windows)
Create-and-Startup JanusGraph Docker-container docker…
Zach
- 539
- 1
- 4
- 22
0
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1 answer
GraphTraversalSource Causing log4j:WARN No appenders could be found for logger (org.apache.commons.beanutils.converters.BooleanConverter)
Problem
How-To-Fix Log4j2 Warnings
When Using Tinkerpop-3-Gremlin (Language)-GraphTraveralSource?
Tried
src/main/java/main.java
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import…
Zach
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- 1
- 4
- 22
0
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0 answers
OrientGraph Cannot Create A Connection To Remote Server Localhost:2424
Problem
OrientGraph Cannot create a connection to remote server localhost:2424 but OrientDB can.
Running Apache-TinkerPop-3 Gremlin commands through the OrientDB API,
Either for Java or Groovy.
Caused by:…
Zach
- 539
- 1
- 4
- 22
0
votes
1 answer
How to add vertex id as property in Gremlin
Due to an application design fault, I need to add vertex_id as the property of the vertex. How to do that in Gremlin Query?
Thirumal
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0
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1 answer
How can I use addV to insert an unknown number of vertices in gremlin-java?
I'm trying to write a Java wrapper that will help me upsert (or even just insert) vertices in a Gremlin server.
I realize that different tools may support other methods, e.g. AWS Neptune (which is my primary target backend) has a bulk loading API…
Fabrice Gabolde
- 215
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1 answer
Cardinality "set" property in gremlin is ordered or unordered?
Cardinality "set" property in apache tinkerpop gremlin is ordered or unordered?
List is not supported in AWS Neptune, but I need to maintain insertion order (or) save & retrieve the items in specific order.
Thirumal
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0
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1 answer
UnsupportedOperationException in gremlin "by step with range" for more than one element
g.V().hasLabel('employee').fold().as("emp", "count")
.select("emp", "count")
.by(range(local, 0, 2).elementMap())
.by(count(local));
The above query is working fine when the range interval is 1 (OR) total number of return vertex is 1.
If it has…
Thirumal
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0
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1 answer
Autowired is not working in CustomMethodSecurityExpressionRoot always returning NULL
Autowired is not working in CustomMethodSecurityExpressionRoot always returning NULL. here is the custom method security.
public class CustomMethodSecurityExpressionRoot extends SecurityExpressionRoot implements MethodSecurityExpressionOperations…
Thirumal
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0
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1 answer
How to map gremlin query output Map to java Pojo class?
How to map gremlin query output Map to java Pojo class?
Gremlin returns vertex properties in Object, how to convert/map it to POJO Class?
Do we need to write a separate mapper class?
Thirumal
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0
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1 answer
How to add new vertex using gremlin coalesce when the traversal is empty?
I am using @GremlinDsl so my traversal from g.V().hasLabel('NEW'), so I am using coalesce to add new vertices. It works well when there is any vertex with the given LABEL in the database, otherwise, it throws an exception. It's obvious the traversal…
Thirumal
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0
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Can we use apache Gremlin DSL for mutations (CREATE, UPDATE & DELETE)?
Can we use apache Gremlin Domain Specific Language (DSL) for mutations (CREATE, UPDATE & DELETE)?
Gremlin Java DSL
@GremlinDsl(traversalSource = "com.sample.dsl.EmpTraversalSourceDsl")
public interface EmpTraversalDsl extends…
Thirumal
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