Question

I’m using my uuid as following:

@Id
@GeneratedValue(generator = "uuid")
@GenericGenerator(name = "uuid", strategy = "uuid")
@Column(name = "uuid", unique = true)
private String uuid;

but I’m getting a smart Hibernate warning:

Using
org.hibernate.id.UUIDHexGenerator
which does not generate IETF RFC 4122
compliant UUID values; consider using
org.hibernate.id.UUIDGenerator instead

So I want to switch to org.hibernate.id.UUIDGenerator, now my question is how should I tell it to Hibernate’s generator. I saw some guy used it as a “hibernate-uuid” – so this is what I’ve tried, but with negative result:

@Id
@GeneratedValue(generator = "hibernate-uuid")
@GenericGenerator(name = "hibernate-uuid", strategy = "hibernate-uuid")
@Column(name = "uuid", unique = true)
private String uuid;

Answer 1

It should be uuid2:

...
@GenericGenerator(name = "uuid", strategy = "uuid2")
...

See 5.1.2.2.1. Various additional generators.