CODEWITHSUNDEEP
javahibernatehibernate-envers
Paperback Writer
Paperback Writer

Reputation: 2125

How do I add comment to revision entity?

I want to add comment to my revision entity, but I don't know how to do this, because I don't know how to pass data to either RevisionListener or EntityTrackingRevisionListener.

My revision entity looks like this:

@Entity
@RevisionEntity
public class RevisionWithComment extends DefaultRevisionEntity {

 private String comment;

/*Normal Hibernate stuff for defining 'comment' as column goes here.*/ 
}

I also have entity Foo and query which mutates some foos. I would like to be able to add arbitrary comments to the new revisions :

public class FooService {

   public void updateFoo( DataForUpdate dataForUpdate, String reasonForChange) {
    //First select and update some foos
    //Now add comment to the new revisions - but how do I do that?
   }

}

How do I do that?

Upvotes: 1

Views: 522

Answers (2)

Oriaxx
Oriaxx

Reputation: 1

You can achieve this with an AOP Introduction. This way you can add a comment field via an Introduction. You can read more about AOP in the official Spring documentation: http://docs.spring.io/spring/docs/current/spring-framework-reference/html/aop.html

Upvotes: 0

user3360944
user3360944

Reputation: 558

I would use a ThreadLocal variable to hold the comment. the updateFoo method will set it and the RevisionWithComment class will get the value and copy it's current value to the entity.

Upvotes: 2

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