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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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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 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 <Record n.Value=5> <class '

Resolved! Can't query a node that has a DateTime

I'm using the Neo4j GraphQL library and I'm new at this. I successfully created a schema and some nodes of type event. The event nodes have a field called startTime which is defined as a DateTime in my schema: type Event { id: ...

Neo4j java driver vs neo4j JDBC driver

Hey there, I developed a simple java application to access neo4j using neo4j java driver and another one using neo4j JDBC driver. can someone tell me what is the difference between them? and which one should I use. Thanks

Null pointer Exception in Neo4J OGM

I am intermittently getting an NPE when I execute a query under mild load. java.lang.NullPointerException: null at org.neo4j.ogm.metadata.MetaData.classInfo( at org.neo4j.ogm.context.GraphEntityMapper.executePostLoad(GraphEntityMa...

Missing dependency / class for embedded neo4j

Hello, I'm trying to create an embedded neo4j database for my unit tests. The OGM (currently trying 3.2.23) referes to org/neo4j/graphdb/factory/GraphDatabaseFactory for this, but it does not seem to exist. At runtime I always get the error: nested e...

Neo4J Starting Failed

Trying to connect Neo4j graph 3.5.3 using import org.apache.commons.configuration2.BaseConfiguration; import org.apache.commons.configuration2.Configuration; import org.apache.tinkerpop.gremlin.neo4j.structure.Neo4jGraph; Configuration configuratio...

Auditing and LastModifiedDate

Have enabled auditing (@EnableNeo4jAuditing) and it appears that after a save the node being saved, and all related (mapped) nodes get last modified updated. This occurs regardless of whether the related nodes have been changed. Is this the expected ...

mick by Node
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Resolved! Netty Vulnerability in Neo4j Java Driver

Hi, there is an open Vulnerability in the Netty dependency of the current Neo4j Java Driver which is already fixed in newer Netty versions. An issue in the GitHub project has already been opened by someone:

Cycling relationship within same entity

Hi everyone, I'm new to neo4j, I have one question hoping someone more experienced could help. So I need to model one to many relationship within User type, the use case is that a user can be lead to another user, so on my UserEntity I want to have "...

Future of PHP Support

Could somebody tell what is the future of neo4j support for PHP? Graphaware repositories are now archived, and this don't sound good. I've started a project with PHP and neo4j, and for now I can't even upgrade to neo4j 4.1 because of unsupported bolt...

Resolved! APOC 4.4 not compatible with Spring Boot 2.6.2

We are in the process of upgrading our Spring Boot stack due to the vulnerability of Log4j. However, because APOC uses an old version of jackson (2.10) that is not compatible with the current spring boot version of jackson (2.13+), we get a runtime e...

Accessing Neo4j server remotely

Hi, I am hosting a Neo4j server on my laptop, and I am trying to access it via an amazon EC2 instance. I am using Neo4j desktop to run the server. I've configured my server to accept external traffic: dbms.default_listen_address= dbms.connecto...