Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Learning RxJava

You're reading from   Learning RxJava Reactive, Concurrent, and responsive applications

Arrow left icon
Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781787120426
Length 400 pages
Edition 1st Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
Thomas Nield Thomas Nield
Author Profile Icon Thomas Nield
Thomas Nield
Arrow right icon
View More author details
Toc

Table of Contents (14) Chapters Close

Preface 1. Thinking Reactively FREE CHAPTER 2. Observables and Subscribers 3. Basic Operators 4. Combining Observables 5. Multicasting, Replaying, and Caching 6. Concurrency and Parallelization 7. Switching, Throttling, Windowing, and Buffering 8. Flowables and Backpressure 9. Transformers and Custom Operators 10. Testing and Debugging 11. RxJava on Android 12. Using RxJava for Kotlin New Appendix

Error recovery operators

Exceptions can occur in your Observable chain across many operators depending on what you are doing. We already know about the onError() event that is communicated down the Observable chain to the Observer. After that, the subscription terminates and no more emissions will occur. But sometimes, we want to intercept exceptions before they get to the Observer and attempt some form of recovery. We cannot necessarily pretend that the error never happened and expect emissions to resume, but we can attempt re-subscribing or switch to an alternate source Observable.

We can still do the former, just not with RxJava operators, which we will see shortly. If you find that the error recovery operators do not meet your needs, chances are you can compose them creatively.

 

For these examples, let's divide each integer emission by 10, where one of the emissions...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime