CODEWITHSUNDEEP
androidrealmrx-javaobservablerx-java2
Jude Fernandes
Jude Fernandes

Reputation: 7527

Unable To query use realm

I am using Realm along with RxJava and at the end i want to fetch an observable that i can use:

@Override
public Observable<List<Data>> getData_List() {
    final Observable<RealmResults<Data>> observable 
                               = realm.where(Data.class).findAll().asObservable();
}

This is my current code, as of now i get an error saying that they are incompatible types, ie observable is io.reactivex.Observable whereas what the Realm returns is of type rx.Observable<io.realm.RealmResults<E>>.

What i want to do is query the realm database and return an Observable list of data objects (Observable<List<Data>>).

How can i do this?

Upvotes: 1

Views: 377

Answers (3)

EpicPandaForce
EpicPandaForce

Reputation: 81568

In order to convert RxJava1 Observable into RxJava2 Observable, you can use RxJava2Interop library using RxJavaInterop.toV2Flowable(rx.Observable);.

Upvotes: 1

koperko
koperko

Reputation: 2487

asObservable() method returns RxJava1.x types and has been deprecated. Since you are using RxJava2, types don't match. See this github issue for more information.

Upvotes: 1

sam33r
sam33r

Reputation: 245

You can use toList() operator to achieve this. RealmResults are just the cursor or pointer to the database and they cannot be used as list directly. Follow this blog if you want to know more about toList.

http://tomstechnicalblog.blogspot.com/2015/11/rxjava-operators-tolist.html

Upvotes: -1

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