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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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Bugs in py2neo.internal.operations -- {x} no longer works

The version 4 release of neo4j apparently has a breaking change in Cypher, so that expressions of the form {x} now cause an error and must be replaced with $x. This broke the statement template used by the subgraph_exists function (in py2neo.internal...

tms by Graph Buddy
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Transactions and locks

Question 1 about Transaction read locks : when doing tx.acquireReadLock on a node, does all relationships linked to this node are also locked, or do we explicitly need to acquire a lock also for them ? Is it possible for a concurrent transaction to d...

Trying to get every relations of every types

Hello, Is it possible to make an OGM NodeEntity listen for every relation types ? In example: This code is getting every relations of type "RELATION", but this is not what I want: @Relationship(type = "RELATION", direction = Relationship.UNDIRECTED) ...

Spring Data Rest, Kotlin & Enum

Greetings all, I seem to be having some difficulties with Spring Data Rest. Setup Spring Boot 2.2.5.RELEASE Kotlin 1.3.61 So as an example, I have an Orangutan NodeEntity @NodeEntity data class Orangutan constructor( @Id @GeneratedValue val id: L...

wayne by Node Clone
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Cannot read property 'isInt' of undefined

Hello, I'm running a very simple graphql query via the graphql cli tool. I get the error: "Cannot read property 'isInt' of undefined". Any idea why? query test($name: String) { Person(name: $name) { first, last } } Thanks

HTTP Request Smuggling issue in neo4j java driver

I found the below security vulnerabilities in neo4j java driver . we are using org.neo4j.driver neo4j-java-driver 1.7.5 CVE-2020-7238Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [...

I can't use IgnoreCase in Neo4JRepositories

We'd like to use case insensitivity searches in our project with the help of Neo4JRepositories, but we don't have the option to do so. The feature should be in SDN since version 5.2.0.M2 (2019-03-07). We're using version 5.2.5.RELEASE as of now. We'd...

Passing unwind parameter issue

Hi, I am trying to pass a graph ql arguments array in cypher query. I am having difficulty making query work. I can see the parameter passed correctly while doing a console log. However, when I try to utilize it with node js. Neo4j driver is not doi...