Package io.reactivex.rxjava3.observers
Class DisposableSingleObserver<T>
java.lang.Object
io.reactivex.rxjava3.observers.DisposableSingleObserver<T>
- Type Parameters:
T
- the received value type
- All Implemented Interfaces:
SingleObserver<T>
,Disposable
public abstract class DisposableSingleObserver<T>
extends Object
implements SingleObserver<T>, Disposable
An abstract
SingleObserver
that allows asynchronous cancellation by implementing Disposable
.
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 an
IllegalStateException
with message "It is not allowed to subscribe with a(n) <class name> multiple times."
.
Implementation of onStart()
, SingleObserver.onSuccess(Object)
and SingleObserver.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 -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionfinal void
dispose()
Dispose the resource, the operation should be idempotent.final boolean
Returns true if this resource has been disposed.protected void
onStart()
Called once the single upstreamDisposable
is set viaonSubscribe(Disposable)
.final void
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
Methods inherited from interface io.reactivex.rxjava3.core.SingleObserver
onError, onSuccess
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Field Details
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upstream
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Constructor Details
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DisposableSingleObserver
public DisposableSingleObserver()
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Method Details
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onSubscribe
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)
. -
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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