@CreatedAt annotation not working with nested document field

[boy-ahoy]

I am using Spring Boot 2.4.0.

The POJO class mapped to collection is:

@SuppressFBWarnings(value = {"EI_EXPOSE_REP", "EI_EXPOSE_REP2"},
    justification = "This is a bean")
@Document(collection = "Posts")
@Data
@Builder
public class Post {

  @Id
  private String id;
  private ActorInfo actorInfo;
  private String text;
  private Media media;
  private int likes; 
  private Meta meta;
  @Version
  private Integer version;

  @Data
  @Builder
  public static class Meta {
    @CreatedDate // <-- this is not working
    private Instant createdAt;
    @LastModifiedDate // <-- this is not working
    private Instant updatedAt;
    private String event; // can be enum?
  }
}

I am using MongoRepository to save above POJO in DB using save().
But I don't see the createdAt and updatedAt being populated in the collection.
This is what is being saved in collection:

{ "_id" : ObjectId("600fc6b23d5ebf145b7bbc0d"), "actorInfo" : { "_id" : "1", "role" : "USER" }, "text" : "Helo", "likes" : 0, "meta" : { "event" : "CREATED" }, "version" : 0, "_class" : "com.highstreet.socialmediaservice.adpater.output.type.Post" }

[christophstrobl]

Did you follow the setup to enable auditing in Spring Data MongoDB?

[boy-ahoy]

Thanks for sharing the link.
My understanding is I don't need to enable audit if I just want couple of auto generated timestamp field.
I am not using, for example, @createdby field.

[christophstrobl]

You do not need to provide AuditorAware but still need to enable auditing.
As per spring-projects/spring-data-commons#1712 auditing annotations on nested types are generally supported. However navigating the path meta.createdAt requires the property (meta in that case) to be non null.
If the issue persists a minimal example would help us triage the cause.

[spring-projects-issues]

If you would like us to look at this issue, please provide the requested information. If the information is not provided within the next 7 days this issue will be closed.

[boy-ahoy]

Yeah enabling auditing worked.

[alabotski]

I also faced such problem... It is not possible to store given information in a nested object

Judging by the questions on stackoverflow, I'm not the only one with this problem

• https://stackoverflow.com/questions/69389277/how-to-have-version-and-audit-information-inside-a-nested-object-in-springboot-m
• https://stackoverflow.com/questions/44208388/spring-data-mongodb-auditing-information-in-nested-object

[michelLinkapital]

I also faced such problem... It is not possible to store given information in a nested object

Judging by the questions on stackoverflow, I'm not the only one with this problem

• https://stackoverflow.com/questions/69389277/how-to-have-version-and-audit-information-inside-a-nested-object-in-springboot-m
• https://stackoverflow.com/questions/44208388/spring-data-mongodb-auditing-information-in-nested-object

I am needing this today. Unable to find a solution. WIll go manual setting ir and I don't like it

[xisvaldo]

No solution for this using nested/embeddable classes?

[alabotski]

@xisvaldo
I created abstract class with system fields and extends from it
Find solution with nested object failed
PS Sorry for English
PS 2 To me, it's very strange that this ticket is closed

[xisvaldo]

I followed this link and could achieve using @Embeddable.