UnicastSubject (RxJava Javadoc 1.2.1)

java.lang.Object
- rx.Observable<R>
- - rx.subjects.Subject<T,T>
  - - rx.subjects.UnicastSubject<T>

Type Parameters:
T - the input and output value type

All Implemented Interfaces:

Observer<T>
```
@Experimental
public final class UnicastSubject<T>
extends Subject<T,T>
```
A Subject variant which buffers events until a single Subscriber arrives and replays them to it and potentially switches to direct delivery once the Subscriber caught up and requested an unlimited amount. In this case, the buffered values are no longer retained. If the Subscriber requests a limited amount, queueing is involved and only those values are retained which weren't requested by the Subscriber at that time.

Nested Class Summary
- Nested classes/interfaces inherited from class rx.Observable
  Observable.OnSubscribe<T>, Observable.Operator<R,T>, Observable.Transformer<T,R>

Method Summary

Methods
Modifier and Type	Method and Description
`static <T> UnicastSubject<T>`	`create()` Constructs an empty UnicastSubject instance with the default capacity hint of 16 elements.
`static <T> UnicastSubject<T>`	`create(int capacityHint)` Constructs an empty UnicastSubject instance with a capacity hint.
`static <T> UnicastSubject<T>`	`create(int capacityHint, Action0 onTerminated)` Constructs an empty UnicastSubject instance with a capacity hint and an Action0 instance to call if the subject reaches its terminal state or the single Subscriber unsubscribes mid-sequence.
`boolean`	`hasObservers()` Indicates whether the `Subject` has `Observers` subscribed to it.
`void`	`onCompleted()` Notifies the Observer that the `Observable` has finished sending push-based notifications.
`void`	`onError(java.lang.Throwable e)` Notifies the Observer that the `Observable` has experienced an error condition.
`void`	`onNext(T t)` Provides the Observer with a new item to observe.

Methods inherited from class rx.subjects.Subject
toSerialized

Methods inherited from class rx.Observable
all, amb, amb, amb, amb, amb, amb, amb, amb, amb, ambWith, asObservable, buffer, buffer, buffer, buffer, buffer, buffer, buffer, buffer, buffer, buffer, buffer, buffer, cache, cache, cacheWithInitialCapacity, cast, collect, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, combineLatestDelayError, compose, concat, concat, concat, concat, concat, concat, concat, concat, concat, concat, concatDelayError, concatDelayError, concatDelayError, concatDelayError, concatDelayError, concatDelayError, concatDelayError, concatDelayError, concatDelayError, concatDelayError, concatEager, concatEager, concatEager, concatEager, concatEager, concatEager, concatEager, concatEager, concatEager, concatEager, concatEager, concatEager, concatMap, concatMapDelayError, concatMapEager, concatMapEager, concatMapEager, concatMapIterable, concatWith, contains, count, countLong, create, create, create, debounce, debounce, debounce, defaultIfEmpty, defer, delay, delay, delay, delay, delaySubscription, delaySubscription, delaySubscription, delaySubscription, dematerialize, distinct, distinct, distinctUntilChanged, distinctUntilChanged, distinctUntilChanged, doAfterTerminate, doOnCompleted, doOnEach, doOnEach, doOnError, doOnNext, doOnRequest, doOnSubscribe, doOnTerminate, doOnUnsubscribe, elementAt, elementAtOrDefault, empty, error, exists, filter, finallyDo, first, first, firstOrDefault, firstOrDefault, flatMap, flatMap, flatMap, flatMap, flatMap, flatMap, flatMapIterable, flatMapIterable, flatMapIterable, flatMapIterable, forEach, forEach, forEach, from, from, from, from, from, fromCallable, fromEmitter, fromEmitter, groupBy, groupBy, groupBy, groupJoin, ignoreElements, interval, interval, interval, interval, isEmpty, join, just, just, just, just, just, just, just, just, just, just, last, last, lastOrDefault, lastOrDefault, lift, limit, map, materialize, merge, merge, merge, merge, merge, merge, merge, merge, merge, merge, merge, merge, merge, merge, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeWith, nest, never, observeOn, observeOn, observeOn, observeOn, ofType, onBackpressureBuffer, onBackpressureBuffer, onBackpressureBuffer, onBackpressureBuffer, onBackpressureDrop, onBackpressureDrop, onBackpressureLatest, onErrorResumeNext, onErrorResumeNext, onErrorReturn, onExceptionResumeNext, onTerminateDetach, publish, publish, range, range, rebatchRequests, reduce, reduce, repeat, repeat, repeat, repeat, repeatWhen, repeatWhen, replay, replay, replay, replay, replay, replay, replay, replay, replay, replay, replay, replay, replay, replay, replay, replay, retry, retry, retry, retryWhen, retryWhen, sample, sample, sample, scan, scan, sequenceEqual, sequenceEqual, serialize, share, single, single, singleOrDefault, singleOrDefault, skip, skip, skip, skipLast, skipLast, skipLast, skipUntil, skipWhile, sorted, sorted, startWith, startWith, startWith, startWith, startWith, startWith, startWith, startWith, startWith, startWith, startWith, subscribe, subscribe, subscribe, subscribe, subscribe, subscribe, subscribeOn, switchIfEmpty, switchMap, switchMapDelayError, switchOnNext, switchOnNextDelayError, take, take, take, takeFirst, takeLast, takeLast, takeLast, takeLast, takeLast, takeLastBuffer, takeLastBuffer, takeLastBuffer, takeLastBuffer, takeLastBuffer, takeUntil, takeUntil, takeWhile, throttleFirst, throttleFirst, throttleLast, throttleLast, throttleWithTimeout, throttleWithTimeout, timeInterval, timeInterval, timeout, timeout, timeout, timeout, timeout, timeout, timeout, timeout, timer, timer, timer, timer, timestamp, timestamp, to, toBlocking, toCompletable, toList, toMap, toMap, toMap, toMultimap, toMultimap, toMultimap, toMultimap, toSingle, toSortedList, toSortedList, toSortedList, toSortedList, unsafeSubscribe, unsubscribeOn, using, using, window, window, window, window, window, window, window, window, window, window, window, window, withLatestFrom, withLatestFrom, withLatestFrom, withLatestFrom, withLatestFrom, withLatestFrom, withLatestFrom, withLatestFrom, withLatestFrom, withLatestFrom, zip, zip, zip, zip, zip, zip, zip, zip, zip, zip, zip, zipWith, zipWith

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - create
```
public static <T> UnicastSubject<T> create()
```
    Constructs an empty UnicastSubject instance with the default capacity hint of 16 elements.
    
    Type Parameters:
    T - the input and output value type
    
    Returns:
    the created UnicastSubject instance
  - create
```
public static <T> UnicastSubject<T> create(int capacityHint)
```
    Constructs an empty UnicastSubject instance with a capacity hint.
    The capacity hint determines the internal queue's island size: the larger it is the less frequent allocation will happen if there is no subscriber or the subscriber hasn't caught up.
    
    Type Parameters:
    T - the input and output value type
    Parameters:
    capacityHint - the capacity hint for the internal queue
    
    Returns:
    the created BufferUntilSubscriber instance
  - create
```
public static <T> UnicastSubject<T> create(int capacityHint,
                           Action0 onTerminated)
```
    Constructs an empty UnicastSubject instance with a capacity hint and an Action0 instance to call if the subject reaches its terminal state or the single Subscriber unsubscribes mid-sequence.
    The capacity hint determines the internal queue's island size: the larger it is the less frequent allocation will happen if there is no subscriber or the subscriber hasn't caught up.
    
    Type Parameters:
    T - the input and output value type
    Parameters:
    capacityHint - the capacity hint for the internal queue
    onTerminated - the optional callback to call when subject reaches its terminal state or the single Subscriber unsubscribes mid-sequence. It will be called at most once.
    
    Returns:
    the created BufferUntilSubscriber instance
  - onNext
```
public void onNext(T t)
```
    Description copied from interface: Observer
    
    Provides the Observer with a new item to observe.
    The Observable may call this method 0 or more times.
    The Observable will not call this method again after it calls either Observer.onCompleted() or Observer.onError(java.lang.Throwable).
    
    Parameters:
    t - the item emitted by the Observable
  - onError
```
public void onError(java.lang.Throwable e)
```
    Description copied from interface: Observer
    
    Notifies the Observer that the Observable has experienced an error condition.
    If the Observable calls this method, it will not thereafter call Observer.onNext(T) or Observer.onCompleted().
    
    Parameters:
    e - the exception encountered by the Observable
  - onCompleted
```
public void onCompleted()
```
    Description copied from interface: Observer
    
    Notifies the Observer that the Observable has finished sending push-based notifications.
    The Observable will not call this method if it calls Observer.onError(java.lang.Throwable).
  - hasObservers
```
public boolean hasObservers()
```
    Description copied from class: Subject
    
    Indicates whether the Subject has Observers subscribed to it.
    
    Specified by:
    
    hasObservers in class Subject<T,T>
    
    Returns:
    true if there is at least one Observer subscribed to this Subject, false otherwise

Class UnicastSubject<T>

Nested Class Summary

Nested classes/interfaces inherited from class rx.Observable

Method Summary

Methods inherited from class rx.subjects.Subject

Methods inherited from class rx.Observable

Methods inherited from class java.lang.Object

Method Detail

create

create

create

onNext

onError

onCompleted

hasObservers