RxJava 1.x: RxJava 3.x:

Library to convert between RxJava 1.x and 3.x reactive types.

Interop between 2.x and 3.x

Check out the https://github.com/akarnokd/RxJavaBridge project.

Releases

gradle

dependencies {
    implementation "com.github.akarnokd:rxjava3-interop:3.0.2"
}

Maven search:

http://search.maven.org

Usage

Convert between the reactive base types

import hu.akarnokd.rxjava3.interop.RxJavaInterop;

// convert from 1.x to 3.x

io.reactivex.rxjava3.core.Flowable     f3  = RxJavaInterop.toV3Flowable(rx.Observable);

io.reactivex.rxjava3.core.Observable   o3  = RxJavaInterop.toV3Observable(rx.Observable);

io.reactivex.rxjava3.core.Single       s3  = RxJavaInterop.toV3Single(rx.Single);

io.reactivex.rxjava3.core.Completable  c3  = RxJavaInterop.toV3Completable(rx.Completable);

io.reactivex.rxjava3.core.Maybe        m3s = RxJavaInterop.toV3Maybe(rx.Single);

io.reactivex.rxjava3.core.Maybe        m3c = RxJavaInterop.toV3Maybe(rx.Completable);

// convert from 3.x to 1.x

rx.Observable  o1 = RxJavaInterop.toV1Observable(Publisher);

rx.Observable  q1 = RxJavaInterop.toV1Observable(ObservableSource, BackpressureStrategy);

rx.Single      s1 = RxJavaInterop.toV1Single(SingleSource);

rx.Completable c1 = RxJavaInterop.toV1Completable(CompletableSource);

rx.Single      s1m = RxJavaInterop.toV1Single(MaybeSource);

rx.Completable c1m = RxJavaInterop.toV1Completable(MaybeSource);

Convert between Subjects and Processors.

Note that 3.x Subjects and FlowableProcessors support only the same input and output types.

// convert from 1.x to 3.x

io.reactivex.rxjava3.subjects.Subject sj3 = RxJavaInterop.toV3Subject(rx.subjects.Subject);

io.reactivex.rxjava3.processors.FlowableProcessor fp3 = RxJavaInterop.toV3Processor(rx.subjects.Subject);

// convert from 3.x to 1.x

rx.subjects.Subject sj1 = RxJavaInterop.toV1Subject(io.reactivex.rxjava3.subjects.Subject);

rx.subjects.Subject sj1b = RxJavaInterop.toV1Subject(io.reactivex.rxjava3.processors.FlowableProcessor);

Convert between 1.x X.Transformers and 3.x XTransformers.

// convert from 1.x to 3.x

io.reactivex.rxjava3.core.FlowableTransformer    ft3 = RxJavaInterop.toV3Transformer(
                                                           rx.Observable.Transformer);

io.reactivex.rxjava3.core.ObservableTransformer  ot3 = RxJavaInterop.toV3Transformer(
                                                           rx.Observable.Transformer, 
                                                           io.reactivex.rxjava3.core.BackpressureStrategy);

io.reactivex.rxjava3.core.SingleTransformer      st3 = RxJavaInterop.toV3Transformer(
                                                           rx.Single.Transformer);

io.reactivex.rxjava3.core.CompletableTransformer ct3 = RxJavaInterop.toV3Transformer(
                                                           rx.Completable.Transformer);

// convert from 3.x to 1.x

rx.Observable.Transformer  ft1 = RxJavaInterop.toV1Transformer(
                                     io.reactivex.rxjava3.core.FlowableTransformer);

rx.Observable.Transformer  ot1 = RxJavaInterop.toV1Transformer(
                                     io.reactivex.rxjava3.core.ObservableTransformer,
                                     io.reactivex.rxjava3.core.BackpressureStrategy);

rx.Single.Transformer      st1 = RxJavaInterop.toV1Transformer(
                                     io.reactivex.rxjava3.core.SingleTransformer);

rx.Completable.Transformer ct1 = RxJavaInterop.toV1Transformer(
                                     io.reactivex.rxjava3.core.CompletableTransformer);

Convert between 1.x Flowable.Operator and 3.x FlowableOperator

// convert from 1.x to 3.x

io.reactivex.rxjava3.core.FlowableOperator fo3 = RxJavaInterop.toV3Operator(rx.Observable.Operator);

// convert from 3.x to 1.x

rx.Observable.Operator fo1 = RxJavaInterop.toV1Operator(io.reactivex.rxjava3.core.FlowableOperator);

Convert between 1.x Subscription and 3.x Disposable

// convert from 1.x to 3.x

io.reactivex.rxjava3.disposables.Disposable d3 = RxJavaInterop.toV3Disposable(rx.Subscription);

// convert from 3.x to 1.x

rx.Subscription s1 = RxJavaInterop.toV1Subscription(io.reactivex.rxjava3.disposables.Disposable);

Convert between 1.x Schedulers and 3.x Schedulers

// convert from 1.x to 3.x

io.reactivex.rxjava3.core.Scheduler s3 = RxJavaInterop.toV3Scheduler(rx.Scheduler);

// convert from 3.x to 1.x

rx.Scheduler s1 = RxJavaInterop.toV1Scheduler(io.reactivex.rxjava3.core.Scheduler);