CODEWITHSUNDEEP
neo4juuid
VINNUSAURUS
VINNUSAURUS

Reputation: 1558

What is the difference between randomUUID and GraphAware UUID in Neo4j?

I am currently using GraphAware UUID Library to generate UUID in neo4j, later I found out that it has a randomUUID() function to generate UUID, which one should be used?, will randomUUID() create unique id on server?

Upvotes: 0

Views: 265

Answers (2)

František Hartman
František Hartman

Reputation: 15086

They both call java.util.UUID#randomUUID(), that's where the similarity between them ends.

The built-in Cypher's randomUUID() is a function, which you have to call manually in each cypher query where you want to assign a UUID.

The neo4j-uuid module is a set of extensions to Neo4j, which allow you to transparently assign UUID (or other types of ids - depending on configured id generator) to nodes and relationships, ensures the ids can't be changed or deleted. It also maintains an explicit index for the nodes / relationships. See the readme for the full feature set.

If your use case is simply to assign a uuid to (some) nodes or relationships then use the built in function. If you can take advantage of the other features of the neo4j-uuid module - use that.

Upvotes: 3

InverseFalcon
InverseFalcon

Reputation: 30407

For manual use cases, creating the UUID yourself in a Cypher query, they're functionally identical (GraphAware implemented this first I think, we got to it later). Yes the ids will be created on the server and will be unique, both

I believe GraphAware's UUID module covers more than just this, doing automatic assigning of UUIDs to newly created nodes and relationships and extra validation on top of that.

Upvotes: 1

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