import rx.observables.AsyncOnSubscribe; //导入依赖的package包/类
private Observable example2() {
    return Observable.create(AsyncOnSubscribe.createStateful(
            new Func0<Integer>() {
                @Override
                public Integer call() {
                    return 1;
                }
            },
            new Func3<Integer, Long, Observer<Observable<? extends Integer>>, Integer>() {
                @Override
                public Integer call(Integer state, Long requested, Observer<Observable<? extends Integer>> observer) {
                    if (state == 1) {
                        Observable<Integer> o1 = Observable.just(1, 2, 3, 4)
                                .delay(300, TimeUnit.MILLISECONDS);
                        observer.onNext(o1);
                    } else if (state == 2) {
                        Observable<Integer> o = Observable.just(5, 6, 7, 8);
                        observer.onNext(o);
                    } else
                        observer.onCompleted();
                    return state + 1;
                }
            }));
}
 

import rx.observables.AsyncOnSubscribe; //导入依赖的package包/类
public Observable<GameOnEvent> consume() {
    Log.log(Level.FINEST, this, "RXJava Observable [" + this.hashCode() + "] consume invoked. Obtaining dataProvider.");
    
    KafkaRxAsyncDataProvider dp = dataProvider.get();
    Action0 unsubscribeHandler = new Action0() {
        @Override
        public void call() {
            Log.log(Level.FINEST, this, "RXJava Observable [" + KafkaRxJavaObservable.this.hashCode()
            + "] unsubscribe called, shutting down dataProvider.");
            dp.shutdown();
            Log.log(Level.FINEST, this, "RXJava Observable [" + KafkaRxJavaObservable.this.hashCode()
            + "] dataProvider shutdown complete.");
        }
    };

    OnSubscribe<GameOnEvent> os = AsyncOnSubscribe.createStateless(dp.getCallback(), unsubscribeHandler);

    // move subscribers to a new thread so they don't block on the data.
    // if we hook unsubscribe here, we can unblock our polling waits..
    // if not, then they expire when the next event comes in.
    Observable<GameOnEvent> goo = Observable.create(os)
            // .doOnUnsubscribe(() -> unsubscribeHandler.call())
            .subscribeOn(Schedulers.from(executor));
    return goo;
}
 

import rx.observables.AsyncOnSubscribe; //导入依赖的package包/类
private Observable example3() {
    return Observable.create(AsyncOnSubscribe.createStateless(
            new Action2<Long, Observer<Observable<? extends Integer>>>() {
                @Override
                public void call(Long requested, Observer<Observable<? extends Integer>> observer) {
                    observer.onNext(Observable.range(1, requested.intValue()));
                    observer.onCompleted();
                }
            }));
}
 

import rx.observables.AsyncOnSubscribe; //导入依赖的package包/类
@Experimental
public static <S, T> Observable<T> create(AsyncOnSubscribe<S, T> asyncOnSubscribe) {
    return new Observable(hook.onCreate(asyncOnSubscribe));
}
 

import rx.observables.AsyncOnSubscribe; //导入依赖的package包/类
public static <S, T> ReactiveSeq<T> create(AsyncOnSubscribe<S, T> asyncOnSubscribe) {
    return reactiveSeq(Observable.create(asyncOnSubscribe));
}