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About the Drivers & Stacks category

All applications using Neo4j depend on drivers to execute statements to update or query data. Neo4j drivers are mostly built on the binary Bolt protocol. Official drivers exist for Java, JavaScript, .Net, Python, and Go and more. Other languages (R, ...

yolande by Community Team
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How would you model for 'recent updates'?

Hi I have a Neo4j graph where Users can create Posts and can also follow Movies or Shows or add these things to Lists. With posts I can get the most recent Posts by Users followed other Users just by ordering by date and that's a single feed, but I a...

Using Repository with Interfaces in Boot 2.2+

Have used a NodeEntity interface for loading nodes using a custom findBy repository method and this is working fine with Spring Boot 2.1, Have just tried using Boot 2.2 (and 2.3) and it now fails with: Caused by: org.springframework.data.mapping.con...

mick by Node
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Resolved! Using unwind in a call with cypherdsl

I have a cypher query and want to catch related nodes for each node in the result. So my working raw cypher query looks like : MATCH p = (:lookingType)<-[:specifiedRelation]-() WITH nodes(p) AS nodes, relationships(p) AS relations CALL { WITH nodes ...

paulB by Node Clone
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@Properties how do I delete an item from a node

I have this map setup: @Properties private Map<String, String> alternateIds = new HashMap<>(); I want to be able to remove items and I thought I would be able to just do something simple like this: public void setAlternateIds(Map<String, String> alte...

clander by Node
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Spring Data neo4j performance issues

Hi all! I'm facing a performance issue on a rather small graph (~30K nodes and ~270K relationships). I'm exposing the database through Spring Data Rest using spring 2.6.2, neo4j version: 4.4.2-community The source code is freely available at Jedidex ...

Resolved! Unknown function 'apoc.util.validatePredicate'

Hello, when I use @auth directive, the erorr will throw. When I delete it, graphql query work well. Graphql schema type User { id: ID @id username: String! @unique firstName: String! lastName: String! email: String! password: String! @private ...

Resolved! Can't get edges from Neo4jRepository

I have created a node class called MyNode and an edge class called MyEdge as follows: @Node public class MyNode { @Id String id; String name; String type; @Relationship(type = "CONTAINS") Set<MyEdge> outgoingEdges = new Has...

9mikev by Node Link
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I cannot connect to a Neo4j AuraDB Instance

I created a Neo4j AuraDB database where I have dumped the movie recommendation dataset. I am able to start and connect to the instance in the cloud. However, when I try to connect to the instance via its API in R Studio, using the neo4r package and t...

Exceptions in Python driver do not extend RuntimeError

My understanding of Python is that user-defined exceptions are supposed to extend the built-in RuntimeError class. Here's some code that I expect to work: def isAvailableDatabase_(self, aDatabaseName): cypherQuery = f"""SHOW DATABASE `{aDatabaseNam...

tms by Graph Buddy
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Resolved! Convert neo4j.data.Record to string

Hi there, I am relatively new to programming and Neo4j and I am currently getting into using it with python. My problem is that whenever I output a property of a node, the response is of type neo4j.data.Record. <Record n.Value=5> <class 'neo4j.data.R...