io.reactivex.SingleEmitter Java Examples

@Override @NonNull public Single<List<T>> observeClear() {
  return Single.create(new SingleOnSubscribe<List<T>>() {
    @Override public void subscribe(final SingleEmitter<List<T>> emitter) throws Exception {
      runInWriteLock(readWriteLock, new ThrowingRunnable() {
        @Override public void run() throws Exception {
          if (file.exists() && !file.delete()) {
            throw new IOException("Clear operation on store failed.");
          }

          emitter.onSuccess(Collections.<T>emptyList());
          updateSubject.onNext(Collections.<T>emptyList());
        }
      });
    }
  });
}
 

/**
 * @param emit
 * @return
 */
@NonNull
@CheckReturnValue
public static ValueEventListener listener(@NonNull final SingleEmitter<DataSnapshot> emit) {
    return new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            if (!emit.isDisposed()) {
                emit.onSuccess(dataSnapshot);
            }
        }

        @Override
        public void onCancelled(DatabaseError e) {
            if (!emit.isDisposed()) {
                emit.onError(e.toException());
            }
        }
    };
}
 

/**
 * @param emit
 * @return
 */
@NonNull
@CheckReturnValue
public static ValueEventListener listener(@NonNull final SingleEmitter<DataSnapshot> emit) {
    return new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            if (!emit.isDisposed()) {
                emit.onSuccess(dataSnapshot);
            }
        }

        @Override
        public void onCancelled(DatabaseError e) {
            if (!emit.isDisposed()) {
                emit.onError(e.toException());
            }
        }
    };
}
 

/**
 * @param query
 * @return
 */
@NonNull
@CheckReturnValue
public static Single<DataSnapshot> single(@NonNull final Query query) {
    return Single.create(new SingleOnSubscribe<DataSnapshot>() {
        @Override
        public void subscribe(
                @NonNull final SingleEmitter<DataSnapshot> emit) throws Exception {
            final ValueEventListener listener = listener(emit);

            emit.setCancellable(new Cancellable() {
                @Override
                public void cancel() throws Exception {
                    query.removeEventListener(listener);
                }
            });

            query.addListenerForSingleValueEvent(listener);
        }
    });
}
 

@Override @NonNull public Single<List<T>> observeAdd(@NonNull final T value) {
  assertNotNull(value, "value");

  return Single.create(new SingleOnSubscribe<List<T>>() {
    @Override public void subscribe(final SingleEmitter<List<T>> emitter) throws Exception {
      runInWriteLock(readWriteLock, new ThrowingRunnable() {
        @Override public void run() throws Exception {
          if (!file.exists() && !file.createNewFile()) {
            throw new IOException("Could not create file for store.");
          }

          List<T> originalList = converter.read(file, type);
          if (originalList == null) originalList = Collections.emptyList();

          List<T> result = new ArrayList<T>(originalList.size() + 1);
          result.addAll(originalList);
          result.add(value);

          converterWrite(result, converter, type, file);
          emitter.onSuccess(result);
          updateSubject.onNext(result);
        }
      });
    }
  });
}
 

/**
 * The returned Single emits one Query result as a List.
 */
public static <T> Single<List<T>> single(final Query<T> query) {
    return Single.create(new SingleOnSubscribe<List<T>>() {
        @Override
        public void subscribe(final SingleEmitter<List<T>> emitter) throws Exception {
            query.subscribe().single().observer(new DataObserver<List<T>>() {
                @Override
                public void onData(List<T> data) {
                    if (!emitter.isDisposed()) {
                        emitter.onSuccess(data);
                    }
                }
            });
            // no need to cancel, single never subscribes
        }
    });
}
 

@SuppressLint("NewApi")
public Single<Boolean> isAlive() {
    if (RXSDebug.isDebug()) Timber.tag(TAG).v("isAlive()");
    return Single
            .create((SingleEmitter<Boolean> emitter) -> {
                if (ApiWrap.hasOreo()) {
                    emitter.onSuccess(process.isAlive());
                } else {
                    try {
                        process.exitValue();
                        emitter.onSuccess(false);
                    } catch (IllegalThreadStateException e) {
                        emitter.onSuccess(true);
                    }
                }
            })
            .subscribeOn(Schedulers.io());
}
 

/**
 * @param query
 * @return
 */
@NonNull
@CheckReturnValue
public static Single<DataSnapshot> single(@NonNull final Query query) {
    return Single.create(new SingleOnSubscribe<DataSnapshot>() {
        @Override
        public void subscribe(
                @NonNull final SingleEmitter<DataSnapshot> emit) throws Exception {
            final ValueEventListener listener = listener(emit);

            emit.setCancellable(new Cancellable() {
                @Override
                public void cancel() throws Exception {
                    query.removeEventListener(listener);
                }
            });

            query.addListenerForSingleValueEvent(listener);
        }
    });
}
 

/**
 * Converts an {@link ApolloStoreOperation} to a Single.
 *
 * @param operation the ApolloStoreOperation to convert
 * @param <T>       the value type
 * @return the converted Single
 */
@NotNull
@CheckReturnValue
public static <T> Single<T> from(@NotNull final ApolloStoreOperation<T> operation) {
  checkNotNull(operation, "operation == null");
  return Single.create(new SingleOnSubscribe<T>() {
    @Override
    public void subscribe(final SingleEmitter<T> emitter) {
      operation.enqueue(new ApolloStoreOperation.Callback<T>() {
        @Override
        public void onSuccess(T result) {
          emitter.onSuccess(result);
        }

        @Override
        public void onFailure(Throwable t) {
          emitter.onError(t);
        }
      });
    }
  });
}
 

/************************************************************/
public Single<Void> deleteCollBookInRx(CollBookBean bean) {
    return Single.create(new SingleOnSubscribe<Void>() {
        @Override
        public void subscribe(SingleEmitter<Void> e) throws Exception {
            //查看文本中是否存在删除的数据
            deleteBook(bean.get_id());
            //删除任务
            deleteDownloadTask(bean.get_id());
            //删除目录
            deleteBookChapter(bean.get_id());
            //删除CollBook
            mCollBookDao.delete(bean);
            e.onSuccess(new Void());
        }
    });
}
 

private <T> Single<T> compositeSingle(Collection<Single<T>> singles) {
    return Single.create((SingleEmitter<T> emitter) -> {
        AtomicInteger errorCount = new AtomicInteger(0);
        CompositeDisposable compositeDisposable = new CompositeDisposable();
        emitter.setCancellable(compositeDisposable::dispose);
        for (Single<T> single : singles) {
            compositeDisposable.add(single.subscribe(emitter::onSuccess, error -> {
                synchronized (errorCount) {
                    if (errorCount.incrementAndGet() == singles.size()) { // Every single has errored
                        emitter.tryOnError(error);
                    }
                }
            }));
        }
    })
            .subscribeOn(BurstKitUtils.defaultBurstNodeServiceScheduler());
}
 

@Override
public final void subscribe(SingleEmitter<T> emitter) throws Exception {
    final GoogleApiClient apiClient = createApiClient(new ApiClientConnectionCallbacks(emitter));

    try {
        apiClient.connect();
    } catch (Throwable ex) {
        emitter.onError(ex);
    }

    emitter.setCancellable(() -> {
        if (apiClient.isConnected()) {
            onUnsubscribed(apiClient);
        }

        apiClient.disconnect();
    });
}
 

public static <T> Single<T> single(final OnSubscribeAction<T> subscribe) {
    return Single.<T>create(new SingleOnSubscribe<T>() {
        @Override
        public void subscribe(final SingleEmitter<T> emitter) throws Exception {
            RxActionDelegate<T> delegate = new RxActionDelegate<>(new ActionDelegate<T>() {
                @Override
                public void onSuccess(T result) {
                    emitter.onSuccess(result);
                }

                @Override
                public void onError(Exception e) {
                    emitter.onError(e);
                }
            });
            emitter.setDisposable(delegate);
            subscribe.subscribe(delegate);
        }
    });
}
 

@Override @NonNull public Single<List<T>> observeRemove(final int position) {
  return Single.create(new SingleOnSubscribe<List<T>>() {
    @Override public void subscribe(final SingleEmitter<List<T>> emitter) throws Exception {
      runInWriteLock(readWriteLock, new ThrowingRunnable() {
        @Override public void run() throws Exception {
          List<T> originalList = converter.read(file, type);
          if (originalList == null) originalList = Collections.emptyList();

          List<T> modifiedList = new ArrayList<T>(originalList);
          modifiedList.remove(position);

          converterWrite(modifiedList, converter, type, file);
          emitter.onSuccess(modifiedList);
          updateSubject.onNext(modifiedList);
        }
      });
    }
  });
}
 

static void onResolutionResult(String observableId, int resultCode) {
    if (observableMap.containsKey(observableId)) {
        SettingsCheckHandleSingleOnSubscribe observable = observableMap.get(observableId).get();

        if (observable != null && observable.emitterWeakRef != null) {
            SingleEmitter<Boolean> observer = observable.emitterWeakRef.get();

            if (observer != null) {
                observer.onSuccess(resultCode == Activity.RESULT_OK);
            }
        }

        observableMap.remove(observableId);
    }

    observableMapCleanup();
}
 

public Single<Result<String>> loadData() {
    return Single.create(new SingleOnSubscribe<Result<String>>() {
        @Override
        public void subscribe(SingleEmitter<Result<String>> e) throws Exception {
            try {
                Thread.sleep(3000);
            } catch (InterruptedException ex) {
                ex.printStackTrace();
            }
            if (new Random().nextBoolean()) {
                e.onSuccess(Result.success("Result from data service"));
            } else {
                e.onSuccess(Result.<String>error(new Throwable("Fake error")));
            }
        }
    }).subscribeOn(Schedulers.computation()).observeOn(AndroidSchedulers.mainThread());
}
 

public Single<T> toSingle() {
    return Single.create(new SingleOnSubscribe<T>() {
        @Override
        public void subscribe(final @NonNull SingleEmitter<T> e) throws Exception {
            enqueue(new Callback<T>() {
                        @Override
                        public void onResponse(@NonNull T data) {
                            e.onSuccess(data);
                        }
                    }
                    , new ErrorCallback() {
                        @Override
                        public void onError(@NonNull Throwable error) {
                            e.onError(error);
                        }
                    }
            );
        }
    });
}
 

@Override @NonNull public Single<List<T>> get() {
  return Single.create(new SingleOnSubscribe<List<T>>() {
    @Override public void subscribe(final SingleEmitter<List<T>> emitter) throws Exception {
      runInReadLock(readWriteLock, new ThrowingRunnable() {
        @Override public void run() throws Exception {
          if (!file.exists()) {
            emitter.onSuccess(Collections.<T>emptyList());
            return;
          }

          List<T> list = converter.read(file, type);
          if (list == null) list = Collections.emptyList();
          emitter.onSuccess(list);
        }
      });
    }
  });
}
 

public static <T> Single<T> singleExec(final RealmConfiguration configuration,
    final Consumer<Pair<SingleEmitter, Realm>> emitter) {
  return Single.create(new SingleOnSubscribe<T>() {
    @Override
    public void subscribe(SingleEmitter<T> e) throws Exception {
      try (Realm realm = Realm.getInstance(configuration)) {
        emitter.accept(new Pair<SingleEmitter, Realm>(e, realm));
      }
    }
  });
}
 

/**
 * Recherche
 */
public Single<AllocineResponseSmall> searchSmall(final String recherche, final List<String> filter, final int count, final int page) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.Q, "" + recherche.replace(" ", "+"),
                            AllocineService.FILTER, filter,
                            AllocineService.COUNT, "" + count,
                            AllocineService.PAGE, "" + page
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<AllocineResponseSmall>>() {
                @Override
                public SingleSource<AllocineResponseSmall> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.searchSmall(recherche, ServiceSecurity.applatir(filter), count, page, pair.first, pair.second);
                }
            })
            .compose(this.<AllocineResponseSmall>retry());
}
 

/**
 * Informations sur un film
 */
public Single<Movie> movie(final String idFilm, final Profile profile) {
    final String filter = FILTER_MOVIE;

    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {

                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.CODE, idFilm,
                            AllocineService.PROFILE, profile.getValue(),
                            AllocineService.FILTER, filter
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends Movie>>() {
                @Override
                public SingleSource<? extends Movie> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.movie(idFilm, profile.getValue(), filter, pair.first, pair.second)
                            .map(new Function<AllocineResponse, Movie>() {
                                @Override
                                public Movie apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getMovie();
                                }
                            });
                }
            })
            .compose(this.<Movie>retry());
}
 

public static <T> DisposableSingleObserver<T> disposableSingleObserverFromEmitter(final SingleEmitter<T> emitter) {
    return new DisposableSingleObserver<T>() {

        @Override
        public void onSuccess(T t) {
            emitter.onSuccess(t);
        }

        @Override
        public void onError(Throwable e) {
            emitter.tryOnError(e);
        }
    };
}
 

/**
 * Informations sur une personne
 */
public Single<PersonFull> person(final String idPerson, final String profile, final String filter) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.CODE, idPerson,
                            AllocineService.PROFILE, profile,
                            AllocineService.FILTER, filter
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<PersonFull>>() {
                @Override
                public SingleSource<PersonFull> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.person(idPerson, profile, filter, pair.first, pair.second)
                            .map(new Function<AllocineResponse, PersonFull>() {
                                @Override
                                public PersonFull apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getPerson();
                                }
                            });
                }
            })
            .compose(this.<PersonFull>retry());
}
 

/**
 * Filmographie d'une personne
 */
public Single<List<Participation>> filmography(final String idPerson, final String profile, final String filter) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.CODE, idPerson,
                            AllocineService.PROFILE, profile,
                            AllocineService.FILTER, filter
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<List<Participation>>>() {
                @Override
                public SingleSource<List<Participation>> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.filmography(idPerson, profile, filter, pair.first, pair.second)
                            .map(new Function<AllocineResponse, List<Participation>>() {
                                @Override
                                public List<Participation> apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getPerson().getParticipation();
                                }
                            });
                }
            })
            .compose(this.<List<Participation>>retry());
}
 

public Single<List<Movie>> movieList(List<MovieListFilter> filter, final Profile profile, final MovieListOrder order, final int count, final int page) {
    final List<String> filterString = new ArrayList<>();
    for (MovieListFilter movieListFilter : filter) {
        filterString.add(movieListFilter.getValue());
    }

    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(true,
                            AllocineService.FILTER, filterString,
                            AllocineService.PROFILE, profile.getValue(),
                            AllocineService.ORDER, order.getValue(),
                            AllocineService.COUNT, "" + count,
                            AllocineService.PAGE, "" + page
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends List<Movie>>>() {
                @Override
                public SingleSource<? extends List<Movie>> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.movieList(ServiceSecurity.applatir(filterString), profile.getValue(), order.getValue(), count, page, pair.first, pair.second)
                            .map(new Function<AllocineResponse, List<Movie>>() {
                                @Override
                                public List<Movie> apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getFeed().getMovie();
                                }
                            });
                }
            })
            .compose(this.<List<Movie>>retry());
}
 

public Single<List<PersonFull>> starsList(final List<PersonListFilter> filter, final Profile profile, final int count, final int page) {
    final List<String> filterString = new ArrayList<>();
    for (PersonListFilter movieListFilter : filter) {
        filterString.add(movieListFilter.getValue());
    }

    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(true,
                            AllocineService.FILTER, filterString,
                            AllocineService.PROFILE, profile.getValue(),
                            AllocineService.COUNT, "" + count,
                            AllocineService.PAGE, "" + page
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends List<PersonFull>>>() {
                @Override
                public SingleSource<? extends List<PersonFull>> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.personList(ServiceSecurity.applatir(filterString), profile.getValue(), count, page, pair.first, pair.second)
                            .map(new Function<AllocineResponse, List<PersonFull>>() {
                                @Override
                                public List<PersonFull> apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getFeed().getPerson();
                                }
                            });
                }
            })
            .compose(this.<List<PersonFull>>retry());
}
 

/**
 * @param emitter
 * @param function
 * @return
 */
@NonNull
@CheckReturnValue
public static Transaction.Handler transaction(
        @NonNull final SingleEmitter<DataSnapshot> emitter,
        @NonNull final Function<MutableData, Transaction.Result> function) {
    return new Transaction.Handler() {
        @Override
        public Transaction.Result doTransaction(MutableData mutableData) {
            try {
                return function.apply(mutableData);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }

        @Override
        public void onComplete(@Nullable DatabaseError databaseError,
                               boolean committed,
                               @NonNull DataSnapshot dataSnapshot) {
            if (!emitter.isDisposed()) {
                if (null == databaseError) {
                    emitter.onSuccess(dataSnapshot);
                } else {
                    emitter.onError(databaseError.toException());
                }
            }
        }
    };
}
 

/**
 * @param ref
 * @param function
 * @param fireLocalEvents
 * @return
 */
@NonNull
@CheckReturnValue
public static Single<DataSnapshot> transaction(
        @NonNull final DatabaseReference ref,
        @NonNull final Function<MutableData, Transaction.Result> function,
        final boolean fireLocalEvents) {
    return Single.create(new SingleOnSubscribe<DataSnapshot>() {
        @Override
        public void subscribe(
                @NonNull final SingleEmitter<DataSnapshot> emit) throws Exception {
            ref.runTransaction(transaction(emit, function), fireLocalEvents);
        }
    });
}
 

@Override
public void subscribe(@NonNull SingleEmitter<Optional<Result>> emitter) throws Exception {
    try {
        final Result value = preparedOperation.executeAsBlocking();
        emitter.onSuccess(Optional.of(value));
    } catch (Exception e) {
        emitter.onError(e);
    }
}
 

/**
 * @param emitter
 * @param function
 * @return
 */
@NonNull
@CheckReturnValue
public static Transaction.Handler transaction(
        @NonNull final SingleEmitter<DataSnapshot> emitter,
        @NonNull final Function<MutableData, Transaction.Result> function) {
    return new Transaction.Handler() {
        @Override
        public Transaction.Result doTransaction(MutableData mutableData) {
            try {
                return function.apply(mutableData);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }

        @Override
        public void onComplete(@Nullable DatabaseError databaseError,
                               boolean committed,
                               @NonNull DataSnapshot dataSnapshot) {
            if (!emitter.isDisposed()) {
                if (null == databaseError) {
                    emitter.onSuccess(dataSnapshot);
                } else {
                    emitter.onError(databaseError.toException());
                }
            }
        }
    };
}