spring data mongodb “id” field mapping

Question

I have a document with an array field with

"chapters": [
  { "id" : "14031871223912313", ...}
  ...
  ]

I would like to query return the id's with Spring Data's MongoTemplate using the following:

class Chapter {
 private String id;
 public String getId() {
        return id;
    } 
}

This way the id is not populated. I have tried using the different mapping options with @Field described here http://docs.spring.io/spring-data/mongodb/docs/current/reference/html/#mapping.conventions.id-field

What am I doing wrong? I know I can always to back to mongo java driver, but I thought this should work.

Thanks in advance for any help.

Answer 1

Found a solution. It is populated via:

  @Field("id")
  private String chaperId

Answer 2

In MongoDB id's are _id, and every document in mongo has an _id. From the document you linked to, Spring will map @Field String id to mongo's _id field. You probably want to use a @Field('id') String id field mapping to indicate that the field you want is id not _id.