Mapping a Collection without using DBRef (Spring Data MongoDB) -

i've been reading lot use of dbref collection mapping in spring data/mongodb discouraged. so, how can implement mapping stores array of objectid taken objects inside students collection?

assuming have following pojo model:

@document (collection = "courses") public class course {      @id     private string id;      private string name;      private list<student> students = new linkedlist<student>();      //.. constructors, getters , setters .. }  public interface courserepository extends mongorepository<course, string> { } 

the result should this:

courses {     _id : objectid("foo"),     _class: "model.course",     name: "mongodb dummies",     students: [ objectid("foo2"), objectid("foo3"), ... ] } 

instead of this:

courses {     _id : objectid("foo"),     _class: "model.course",     name: "mongodb dummies",     students: [               dbref("student", objectid("foo2")),              dbref("student", objectid("foo3"))     ] } 

thanks!

you might wanna try obvious , change students list<objectid>. ;)