Merging Realm object & Gson object

Question

My goal is to persist an object instantiated with GSON to the database with realm.

My problem is the following:

• I can instantiate an object with GSON, so GSON takes care of all the properties, but then it won't be persisted to db

• I can instantiate an object with Realm, but then I have to fill in all the setters for the properties.

In my oncreate, this part is the same for both methods

//delete previous realm file
Realm.deleteRealmFile(this);

//gson instance
Gson gson = new Gson();

//realm instance
realm = Realm.getInstance(this);

** The name of my class is Vacature **

Info: I am aware that the following code needs to be inside:

realm.beginTransaction();

// code here

realm.commitTransaction();

Option 1:

//get class with gson
Vacature vacatureGson = gson.fromJson(jsonString, Vacature.class);

This won't work because you have to instantiate a realm object by using

Class instance = realm.createObject(Class.class); // Create a new object

Option 2:

//get instance with gson
Vacature vacatureGson = gson.fromJson(jsonString, Vacature.class);
//make instance with realm
Vacature realmVacature = realm.createObject(Vacature.class);
realmVacature = vacatureGson;

This won't work because this is not a proper way to copy all the properties from one object to another. If there is however a good way to copy all the properties from the gsonObject to the realmObject, option 2 might work.

Any ideas on how to solve this puzzle?

Answer 1

Emanuele from Realm here.

Right now the solution is suboptimal and is presented in one of the examples: https://github.com/realm/realm-java/blob/master/examples/gridViewExample/src/main/java/io/realm/examples/realmgridview/GridViewExampleActivity.java

We're working to make the experience way smoother!