Package io.reactivex.rxjava3.observers
Class DisposableSingleObserver<T>
- java.lang.Object
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- io.reactivex.rxjava3.observers.DisposableSingleObserver<T>
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- Type Parameters:
T
- the received value type
- All Implemented Interfaces:
SingleObserver<T>
,Disposable
public abstract class DisposableSingleObserver<T> extends java.lang.Object implements SingleObserver<T>, Disposable
An abstractSingleObserver
that allows asynchronous cancellation by implementingDisposable
.All pre-implemented final methods are thread-safe.
Like all other consumers,
DisposableSingleObserver
can be subscribed only once. Any subsequent attempt to subscribe it to a new source will yield anIllegalStateException
with message"It is not allowed to subscribe with a(n) <class name> multiple times."
.Implementation of
onStart()
,SingleObserver.onSuccess(Object)
andSingleObserver.onError(Throwable)
are not allowed to throw any unchecked exceptions.Example
Disposable d = Single.just(1).delay(1, TimeUnit.SECONDS) .subscribeWith(new DisposableSingleObserver<Integer>() { @Override public void onStart() { System.out.println("Start!"); } @Override public void onSuccess(Integer t) { System.out.println(t); } @Override public void onError(Throwable t) { t.printStackTrace(); } }); // ... d.dispose();
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Field Summary
Fields Modifier and Type Field Description (package private) java.util.concurrent.atomic.AtomicReference<Disposable>
upstream
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Constructor Summary
Constructors Constructor Description DisposableSingleObserver()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
dispose()
Dispose the resource, the operation should be idempotent.boolean
isDisposed()
Returns true if this resource has been disposed.protected void
onStart()
Called once the single upstreamDisposable
is set viaonSubscribe(Disposable)
.void
onSubscribe(@NonNull Disposable d)
Provides theSingleObserver
with the means of cancelling (disposing) the connection (channel) with the Single in both synchronous (from withinonSubscribe(Disposable)
itself) and asynchronous manner.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface io.reactivex.rxjava3.core.SingleObserver
onError, onSuccess
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Field Detail
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upstream
final java.util.concurrent.atomic.AtomicReference<Disposable> upstream
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Method Detail
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onSubscribe
public final void onSubscribe(@NonNull @NonNull Disposable d)
Description copied from interface:SingleObserver
Provides theSingleObserver
with the means of cancelling (disposing) the connection (channel) with the Single in both synchronous (from withinonSubscribe(Disposable)
itself) and asynchronous manner.- Specified by:
onSubscribe
in interfaceSingleObserver<T>
- Parameters:
d
- the Disposable instance whoseDisposable.dispose()
can be called anytime to cancel the connection
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onStart
protected void onStart()
Called once the single upstreamDisposable
is set viaonSubscribe(Disposable)
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isDisposed
public final boolean isDisposed()
Description copied from interface:Disposable
Returns true if this resource has been disposed.- Specified by:
isDisposed
in interfaceDisposable
- Returns:
- true if this resource has been disposed
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dispose
public final void dispose()
Description copied from interface:Disposable
Dispose the resource, the operation should be idempotent.- Specified by:
dispose
in interfaceDisposable
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