io.reactivex.functions.Function3 Java Examples

public FlowableStateMachine(Flowable<In> source, //
        Callable<? extends State> initialState, //
        Function3<? super State, ? super In, ? super Emitter<Out>, ? extends State> transition, //
        BiConsumer<? super State, ? super Emitter<Out>> completionAction, //
        Consumer3<? super State, ? super Throwable, ? super Emitter<Out>> errorAction, //
        BackpressureStrategy backpressureStrategy, //
        int requestBatchSize) {
    Preconditions.checkNotNull(initialState);
    Preconditions.checkNotNull(transition);
    Preconditions.checkNotNull(backpressureStrategy);
    Preconditions.checkArgument(requestBatchSize > 0,
            "initialRequest must be greater than zero");
    this.source = source;
    this.initialState = initialState;
    this.transition = transition;
    this.completionAction = completionAction;
    this.errorAction = errorAction;
    this.backpressureStrategy = backpressureStrategy;
    this.requestBatchSize = requestBatchSize;
}
 

StateMachineSubscriber( //
        Callable<? extends State> initialState,
        Function3<? super State, ? super In, ? super Emitter<Out>, ? extends State> transition, //
        BiConsumer<? super State, ? super Emitter<Out>> completionAction, //
        Consumer3<? super State, ? super Throwable, ? super Emitter<Out>> errorAction, //
        BackpressureStrategy backpressureStrategy, //
        int requestBatchSize, //
        Subscriber<? super Out> child) {
    this.initialState = initialState;
    this.transition = transition;
    this.completionAction = completionAction;
    this.errorAction = errorAction;
    this.backpressureStrategy = backpressureStrategy;
    this.requestBatchSize = requestBatchSize;
    this.child = child;
    this.count = requestBatchSize;
}
 

public static void main(String[] args) {
    // Create an await for the API
    //Promise<ApiPromise> ready = ApiPromise.create();
    initEndPoint(args);

    WsProvider wsProvider = new WsProvider(endPoint);

    Observable<ApiRx> apiRxObservable = ApiRx.create(wsProvider);

    apiRxObservable.flatMap((apiRx) -> {

        return (Observable<String[]>) Observable.zip(
                apiRx.rpc().system().function("chain").invoke(),
                apiRx.rpc().system().function("name").invoke(),
                apiRx.rpc().system().function("version").invoke(),

                new Function3<Object, Object, Object, String[]>() {
                    @Override
                    public String[] apply(Object o, Object o2, Object o3) throws Exception {
                        String[] msg = new String[]{o.toString(), o2.toString(), o3.toString()};
                        return msg;
                    }
                }

        );
    }).subscribe((result) -> {
        String[] infos = (String[])result;
        System.out.println("You are connected to chain [" + infos[0] + "] using [" + infos[1] + "] v[" + infos[2] + "]");
    });
}
 

public static void main(String[] args) {
    // Create an await for the API
    //Promise<ApiPromise> ready = ApiPromise.create();
    initEndPoint(args);

    WsProvider wsProvider = new WsProvider(endPoint);

    Observable<ApiRx> apiRxObservable = ApiRx.create(wsProvider);

    apiRxObservable.flatMap((apiRx) -> {

        return (Observable<String[]>) Observable.zip(
                apiRx.rpc().system().function("chain").invoke(),
                apiRx.rpc().system().function("name").invoke(),
                apiRx.rpc().system().function("version").invoke(),

                new Function3<Object, Object, Object, String[]>() {
                    @Override
                    public String[] apply(Object o, Object o2, Object o3) throws Exception {
                        String[] msg = new String[]{o.toString(), o2.toString(), o3.toString()};
                        return msg;
                    }
                }

        );
    }).subscribe((String[] result) -> {
        System.out.println("You are connected to chain [" + result[0] + "] using [" + result[1] + "] v[" + result[2] + "]");
    });
}
 

/**
 * 获取首页banner、置顶文章、列表文章
 * @param page
 * @param function3
 * @param rxObserver
 */
@Override
public void getHomeData(int page, Function3<BaseBean<List<Banner>>, BaseBean<List<Article>>, BaseBean<PageListData<Article>>, HomeData> function3, DisposableObserver<HomeData> rxObserver) {
    Observable<BaseBean<List<Banner>>> bannerObservable = getBannerObservable();
    Observable<BaseBean<List<Article>>> homeTopObservable = getHomeTopObservable();
    Observable<BaseBean<PageListData<Article>>> homeObservable = getHomeListObservable(page);
    Observable.zip(bannerObservable, homeTopObservable, homeObservable, function3)
            .subscribeOn(Schedulers.io())
            .observeOn(AndroidSchedulers.mainThread())
            .subscribe(rxObserver);
}
 

public static <T> Single<DetailBean<T>> toCommentDetail(Single<T> detailSingle,
                                            Single<List<CommentBean>> bestCommentsSingle,
                                            Single<List<CommentBean>> commentsSingle){
    return Single.zip(detailSingle, bestCommentsSingle, commentsSingle,
            new Function3<T, List<CommentBean>, List<CommentBean>, DetailBean<T>>() {
                @Override
                public DetailBean<T> apply(T t, List<CommentBean> commentBeen,
                                           List<CommentBean> commentBeen2) throws Exception {
                    return new DetailBean<T>(t,commentBeen,commentBeen2);
                }
            });
}
 

private TransformerStateMachine(Callable<? extends State> initialState,
        Function3<? super State, ? super In, ? super FlowableEmitter<Out>, ? extends State> transition,
        BiPredicate<? super State, ? super FlowableEmitter<Out>> completion,
        BackpressureStrategy backpressureStrategy, int requestBatchSize) {
    Preconditions.checkNotNull(initialState);
    Preconditions.checkNotNull(transition);
    Preconditions.checkNotNull(completion);
    Preconditions.checkNotNull(backpressureStrategy);
    Preconditions.checkArgument(requestBatchSize > 0, "initialRequest must be greater than zero");
    this.initialState = initialState;
    this.transition = transition;
    this.completion = completion;
    this.backpressureStrategy = backpressureStrategy;
    this.requestBatchSize = requestBatchSize;
}
 

public static <State, In, Out> FlowableTransformer<In, Out> create(Callable<? extends State> initialState,
        Function3<? super State, ? super In, ? super FlowableEmitter<Out>, ? extends State> transition,
        BiPredicate<? super State, ? super FlowableEmitter<Out>> completion,
        BackpressureStrategy backpressureStrategy, int requestBatchSize) {
    return new TransformerStateMachine<State, In, Out>(initialState, transition, completion, backpressureStrategy,
            requestBatchSize);
}
 

private static <State, Out, In> Function<Notification<In>, Flowable<Notification<Out>>> execute(
        final Function3<? super State, ? super In, ? super FlowableEmitter<Out>, ? extends State> transition,
        final BiPredicate<? super State, ? super FlowableEmitter<Out>> completion, final Mutable<State> state,
        final BackpressureStrategy backpressureStrategy) {

    return new Function<Notification<In>, Flowable<Notification<Out>>>() {

        @Override
        public Flowable<Notification<Out>> apply(final Notification<In> in) {

            return Flowable.create(new FlowableOnSubscribe<Notification<Out>>() {

                @Override
                public void subscribe(FlowableEmitter<Notification<Out>> emitter) throws Exception {
                    FlowableEmitter<Out> w = wrap(emitter);
                    if (in.isOnNext()) {
                        state.value = transition.apply(state.value, in.getValue(), w);
                        if (!emitter.isCancelled())
                            emitter.onComplete();
                        else {
                            // this is a special emission to indicate that
                            // the transition called unsubscribe. It will be
                            // filtered later.
                            emitter.onNext(UnsubscribedNotificationHolder.<Out>unsubscribedNotification());
                        }
                    } else if (in.isOnComplete()) {
                        if (completion.test(state.value, w) && !emitter.isCancelled()) {
                            w.onComplete();
                        }
                    } else if (!emitter.isCancelled()) {
                        w.onError(in.getError());
                    }
                }

            }, backpressureStrategy);
        }
    };
}
 

public static <State, In, Out> FlowableTransformer<In, Out> stateMachine(Callable<? extends State> initialState,
        Function3<? super State, ? super In, ? super FlowableEmitter<Out>, ? extends State> transition,
        BiPredicate<? super State, ? super FlowableEmitter<Out>> completion,
        BackpressureStrategy backpressureStrategy, int requestBatchSize) {
    return TransformerStateMachine.create(initialState, transition, completion, backpressureStrategy,
            requestBatchSize);
}
 

public void onZipRequest(View view) {
    //使用zip操作符合并等待多个网络请求完成后，再刷新界面
    //例如下面：数据来自3个不同的接口
    Observable<ResultBean> mobileObservable = EasyHttp.get("http://apis.juhe.cn/mobile/get")
            .params("phone", "18688994275")
            .params("dtype", "json")
            .params("key", "5682c1f44a7f486e40f9720d6c97ffe4")
            .execute(new CallClazzProxy<TestApiResult1<ResultBean>, ResultBean>(ResultBean.class) {
            });

    Observable<Content> searchObservable = EasyHttp.get("/ajax.php")
            .baseUrl("http://fy.iciba.com")
            .params("a", "fy")
            .params("f", "auto")
            .params("t", "auto")
            .params("w", "hello world")
            //采用代理
            .execute(new CallClazzProxy<TestApiResult6<Content>, Content>(Content.class) {
            });

    Observable<List<SectionItem>> listObservable = EasyHttp.get("http://news-at.zhihu.com/api/3/sections")
            .execute(new CallClazzProxy<TestApiResult5<List<SectionItem>>, List<SectionItem>>(new TypeToken<List<SectionItem>>() {
            }.getType()) {
            });
    //new Function3最后一个参数这里用的是List<Object>，表示将3个返回的结果，放在同一个集合最终一次性返回，你也可以指定返回其它你需要的数据类型并不一定是List<Object>
    //假如这三个接口返回的都是TestBean,那么就可以直接用具体的List<TestBean>,不需要用List<Object>
    Observable.zip(mobileObservable, searchObservable, listObservable, new Function3<ResultBean, Content, List<SectionItem>, List<Object>>() {
        @Override
        public List<Object> apply(@NonNull ResultBean resultbean, @NonNull Content content, @NonNull List<SectionItem> sectionItems) throws Exception {
            //将接收到的3个数据先暂存起来，一次性发给订阅者
            List list = new ArrayList();
            list.add(resultbean);
            list.add(content);
            list.add(sectionItems);
            return list;
        }
    }).subscribe(new BaseSubscriber<List<Object>>() {
        @Override
        public void onError(ApiException e) {
            showToast(e.getMessage());
        }

        @Override
        public void onNext(@NonNull List<Object> objects) {
            showToast(objects.toString());
        }
    });
}
 

private Function3<ChanCatalog, List<HiddenThread>, List<Filter>, ChanCatalog> hideThreads() {
    return (chanCatalog, hiddenThreads, filters) -> {
        if (chanCatalog != null) {
            List<ChanPost> posts = new ArrayList<>();
            for (ChanPost post : chanCatalog.getPosts()) {
                boolean found = false;
                for (HiddenThread hiddenThread : hiddenThreads) {
                    if (hiddenThread.threadId == post.getNo()) {
                        found = true;
                        break;
                    }
                }

                if (filters != null && filters.size() > 0 && !found) {
                    for (Filter filter : filters) {
                        if (found) {
                            break;
                        }

                        Pattern filterPattern = Pattern.compile(filter.filter, Pattern.CASE_INSENSITIVE);

                        Matcher matcher;
                        if (post.getCom() != null) {
                            matcher = filterPattern.matcher(post.getCom());
                            found = matcher.find();
                        }

                        if (post.getSub() != null && !found) {
                            matcher = filterPattern.matcher(post.getSub());
                            found = matcher.find();
                        }

                        if (post.getName() != null && !found) {
                            matcher = filterPattern.matcher(post.getName());
                            found = matcher.find();
                        }
                    }
                }

                if (!found) {
                    posts.add(post);
                }
            }

            chanCatalog.setPosts(posts);

        }
        return chanCatalog;
    };
}
 

/**
 * 获取首页banner、置顶文章、列表文章
 * @param page 页码
 * @param function3
 * @param rxObserver
 */
void getHomeData(int page, Function3<BaseBean<List<Banner>>, BaseBean<List<Article>>, BaseBean<PageListData<Article>>, HomeData> function3, DisposableObserver<HomeData> rxObserver);