Realm-java: Passing RealmObject that implements Serializable not working

[vijaemanlapaz]

Hello its my first time to use realm and i think its great it saves me time creating SQLite database for my app, however i tried passing RealmObject that implements Serializable from one Activity to another and it doesn't work. it throws NullPointerException, I'm using version realm-81.1.jar
please see my sample code below.

==== Sending Part ====
Intent intent = new Intent(sending class, receiving class);
intent.putExtra("entity", testmodel);
startActivity(intent)

==== Receiving Part ====
TestModel model = (TestModel) getIntent().getSerializableExtra("entity");

==== TestModel Code ====
public class TestModel extends RealmObject implements Serializable {
private String name;
private int id;

  // getter and setter

}

[mshusek]

I would suggest you put "id" field into extra and inside receiving part do request into database. Otherwise you probably have to manual deep copy your property.

[vijaemanlapaz]

hi @mshusek thanks for the reply i was beginning to think i'm alone in here hehe anyways, apparently i ended up doing that passing the id to the receiving part and query from there its not a bad idea but it would nicer if we could pass the RealmObject in an Intent as Serializable so we only have to query it once.

[emanuelez]

Right now Realm is not very good for implementing Serializable. We are working on a solution that will make RealmObjects feel a lot more like normal POJOs, but until then some workarounds are needed.
For example, why serialize when your data is in Realm already? As suggested you can add a primary key field and only pass that around and requery your data/object on the other side.

[vijaemanlapaz]

Hi @emanuelez once again thanks for giving a light on my post. i totally get your point. in response to your question "why serialize when your data is in Realm already?" its because why requery if i already queried that data on realm on another page and ill be using that same data on the other page. passing it as a Serializable would be much easier.

I really appreciate your response, seems everybody is really busy making this much better.
ill be closing this post now

[emanuelez]

Well, re-querying is actually a much lighter operation, especially when operated on a primary key :)

[vijaemanlapaz]

is that so.. in that case i'm gonna take your advice.

[oti215]

so my question is... will RealmObjects ever be able to implement Serializable? is it in the plans?

[Zhuinden]

RealmList doesn't implement it and most likely won't.

[cmelchior]

No, we don't have any plans to support Serializable.