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Questions tagged [neo4j-apoc]

APOC is short for "Awesome Procedures on Cypher." Introduced in Neo4j release 3.0, APOCs are callable procedures which extend the Cypher query language.Questions with the neo4j-apoc tag should be for "small, generic helper functions for common tasks" that are not available in the Cypher query language.

APOC procedures are "User Defined Procedures." They are similar to stored procedures in some relational databases. APOCs can be written in any language that runs on the JVM. Questions tagged with neo4j-apoc should have an accompanying tag for the specific language being used.

Built in procedures are included in Neo4j releases. Before posting a question on StackOverflow, please consult the Neo4j documentation and ask if your task is possible in the public chat channels.

516 questions
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Neo4j Install APOC and Graph Algorithms Neo.ClientError.Procedure.ProcedureRegistrationFailed

I have some issues with APOC and Graph Algorithms plugins. I followed the instruction to put the .jars in {NEO4j_HOME}/plugins and also change the setting in my…
mlo0424
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How to install apoc for neo4j?

According to https://neo4j-contrib.github.io/neo4j-apoc-procedures/, one only needs to download the binary jar from http://github.com/neo4j-contrib/neo4j-apoc-procedures/releases/3.1.0.3 to place into the folder "Neo4j CE 3.1.1\plugins". I did so.…
Aqqqq
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Pass graph property names to gephi using apoc.gephi.add()

I am streaming graphs from neo4j to Gephi using the apoc.gephi.add(). The method only passes one property of the node as a node label in Gephi. Which is not only desired node label I want. Is there a way to transfer other property as a node label to…
smm
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Neo4J's APOC plugin (3.1.3.6) is running very slow

I recently upgraded my Neo4j to 3.1.3, and alongside that, got the most recent APOC plugin (3.1.3.6). I had a bit of code that worked fine, and could create ~3 million relationships in about a minute and a half wall time. But now, it's been…
Monica Heddneck
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Export Neo4j SubGraph to a Http Endpoint

I am handling with Neo4j APOC triggers and i have a doubt, Can i made a trigger that when a graph or a subgraph will be change, it send a HTTP request to a extern endpoint? CALL apoc.trigger.add('httpTrigger',"UNWIND {createdNodes} AS n OPTIONAL…
Raúl Garcia
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Neo4j and Gephi Graph Streaming plugin: Connection refused

I am trying to connect Gephi (https://gephi.org/) and Neo4j (via docker) using Gephi's graph Streaming plugin and Neo4j's apoc procedures, as explained here: https://tbgraph.wordpress.com/2017/04/01/neo4j-to-gephi/ . I have already installed the…
vicaba
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Neo4j APOC Write operations are not allowed for user 'neo4j' with FULL restricted to READ

On my Neo4j 3.3.3 Community Edition I use apoc-3.3.0.2-all.jar APOC plugin and I have installed the following APOC trigger: CALL apoc.trigger.add('HAS_VALUE_ON_INDEX', 'UNWIND {createdRelationships} AS r MATCH…
alexanoid
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APOC procedure not found

CALL apoc.export.csv.query("match (m:Movie) where m.name='Matrix' return m.name","results.csv",{}) Error: Neo.ClientError.Procedure.ProcedureNotFound There is no procedure with the name apoc.export.csv.query registered for this database instance.…
Faaiz
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UNWIND multiple unrelated arrays loaded from JSON file

I'm trying to UNWIND multiple array properties with a single call to apoc.load.json(). The version I have doesn't fully work: some relationships don't get loaded. My guess is that it's due to the piping of output via the WITH command. I can have it…
VeraKozya
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neo4j : k-shortest path Built-In Algorithm support

I need to find k-shortest paths between two nodes in neo4j. Options tried till now: I found Built-in Algorithm support for Djikstra,A* using shortestpath, allshortestpath calls as well as APOC procedures but none which suits my need. All these…
Priyank Mehta
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Neo4J / APOC - Cannot build query after calling stored procedure `apoc.cypher.doIt`

I am running the following Cypher query: WITH "CREATE (test:Test {id: 1})" AS cypher CALL apoc.cypher.doIt(cypher, {}) YIELD value CREATE (test2:Test2 {id: 2}) Afterwards, I run MATCH (a) RETURN a and see that only one node, with Test label is…
Chris Staikos
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APOC is only partially installing its extension in neo4j (one procedure)

I downloaded apoc-3.1.0.3-all.jar and placed it in the plugins for my windows7 Neo4J 3.1.1 system. C:\Users>java -version java version "1.8.0_121" Java(TM) SE Runtime Environment (build 1.8.0_121-b13) Java HotSpot(TM) 64-Bit Server VM (build…
Dr.YSG
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How to use Neo4j Cypher APOC parallel processing

We have a lot of (n1:EffortUser)-[r1:EFFORT]->(n2:EffortObject) that need to be counted by day and week, i.e. how many EffortObject:Email did a EffortUser SENT. if you have a lot of users and emails that can take quite some time so we would like to…
Christian Bartens
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Implementing Dijkstra's algorithm in Neo4j with max hops

I have simple weighted graph. I know how to find shortest route (in terms of hops) and I know how to find shortest route by weight. I need to find shortest route by weight, but I also need to limit how many hops are allowed. Is it possible with…
user2728008
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Unable to call apoc.load.json on Neo4j 3.2.6

I am using Neo4j Community Edition 3.2.6 along with apoc-3.2.3.5-all.jar on Mac. When I try to use any query on the browser that contains call apoc.load.json, I keep getting Failed to invoke procedure apoc.load.json: Caused by:…
media
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