rx.internal.operators

Class OperatorOnErrorReturn<T>

java.lang.Object

rx.internal.operators.OperatorOnErrorReturn<T>

Type Parameters:

T - the value type

All Implemented Interfaces:

Func1<Subscriber<? super T>,Subscriber<? super T>>, Function, Observable.Operator<T,T>

public final class OperatorOnErrorReturn<T>
extends java.lang.Object
implements Observable.Operator<T,T>

Instruct an Observable to emit a particular item to its Observer's onNext method rather than invoking onError if it encounters an error.

By default, when an Observable encounters an error that prevents it from emitting the expected item to its Observer, the Observable invokes its Observer's onError method, and then quits without invoking any more of its Observer's methods. The onErrorReturn operation changes this behavior. If you pass a function (resumeFunction) to onErrorReturn, if the original Observable encounters an error, instead of invoking its Observer's onError method, it will instead pass the return value of resumeFunction to the Observer's onNext method.

You can use this to prevent errors from propagating or to supply fallback data should errors be encountered.

Constructor Summary

Constructors

Constructor and Description
OperatorOnErrorReturn(Func1<java.lang.Throwable,? extends T> resultFunction)

Method Summary

Methods

Modifier and Type	Method and Description
Subscriber<? super T>	call(Subscriber<? super T> child)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OperatorOnErrorReturn

public OperatorOnErrorReturn(Func1<java.lang.Throwable,? extends T> resultFunction)

Method Detail

call

public Subscriber<? super T> call(Subscriber<? super T> child)

Specified by:

call in interface Func1<Subscriber<? super T>,Subscriber<? super T>>