Jackson parsing JSON containing an array of objects and array of maps w/ dynamic keys

Question

I have json like this:

{

    "users":{
           "1234":{
                 "firstname":"Joe",
                 "lastname":"Smith"
           },
           "9876":{
                 "firstname":"Bob",
                 "lastname":"Anderson"
           }
    },
    "jobs":[
          {
              "id":"abc",
              "location":"store"
          },
          {
              "id":"def",
              "location":"factory"
          }
    ]
}

I'm parsing this using Jackson and so I have been parsing responses using: readvalue(json, MyCustomClass.class)

Where MyCustomClass looks like

public class MyCustomClass{
      @JsonProperty("jobs")
      ArrayList<Job> jobs;

      @JsonProperty("users")
      ArrayList<UserMap> usersMap;
}

Now the jobs parse perfectly into Jobs objects but I can't get the users to parse since they have dynamic keys. I read about JsonAnyGetter/Setter and tried making the UserMap object map that maps a string -> User like:

public class UserMap {

private HashMap<String,User> usersMap;


@JsonAnySetter
public void add(String key, User user){
    usersMap.put(key, user);
}

@JsonAnyGetter
public Map<String, User> getUsersMap(){
    return usersMap;
}


}

but that doesn't work. I think I can do it with a TypeReference wrapper but I only can think of a way to do that if those maps were the only type I was getting back. Since I am getting different types back (users and jobs) is it possible to do this?

Answer 1

Solution:

public class MyCustomClass {
    @JsonProperty("users")
    public LinkedHashMap<String, User> users;

    @JsonProperty("jobs")
    public ArrayList<Job> jobs;
}