spring data jpa fine granular auditing, custom audit - spring-data-jpa

Question

I have requirement where I need to insert user name and group name to which the user belongs (both available in SecurityContext) in the same table.
class Entity
{
#createdBy
String username
#createdBy
String groupname
other fields ...
}
As per requirement. I cant solve this issue by making a user class and referencing it through a foreign key.
With current implementation of AuditingHandler both fields are getting the same value. How do I make sure they get respective values.
Can this be achieved using current implementation ?
If not thn how can I provide custom implementation of AuditingHandler ?

Answer 1

You could make a separate embeddable class and annotate it with #CreatedBy in your parent class. One way is to define a bean implementing AuditorAware, then you can make it return custom object, containing your two required fields. For example, your parent class would look like this (note the listener annotation):
#Entity
#EntityListeners(AuditingEntityListener.class)
public class AuditedEntity {
#Id
#GeneratedValue(generator = "uuid")
#GenericGenerator(name = "uuid", strategy = "uuid")
private String id;
#Embedded
#CreatedBy
private AuditorDetails createdBy;
// setters and getters
}
where AuditorDetails is:
#Embeddable
public class AuditorDetails {
private String username;
private String groupname;
// setters and getters
}
and finally, your AuditorAware bean:
#Component
class AuditorAwareImpl implements AuditorAware<AuditorDetails> {
#Override
public AuditorDetails getCurrentAuditor() {
return new AuditorDetails()
.setUsername("someUser")
.setGroupname("someGroup");
}
}
AuditingHandler fetches your custom AuditorDetails from your AuditorAware bean (it must be single bean implementing it) and sets it in your auditable entity.