spring data jpa fine granular auditing, custom audit

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 ?

score 6 · Answer 1 · answered Aug 08 '16 at 14:19

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.

spring data jpa fine granular auditing, custom audit

1 Answers1