MongoDB Embedded Objects have no ID (null value)

Question

I have a question regarding MongoDB with Spring Data. I have these domain classes:

@Document
public class Deal  {
    @Id
    private ObjectId _id;
    priv         


        

Answer 1

An _id is not set on subdocuments by default only on root docuemnts.

You will need to define a _id for your subdocuments on insert and update.