RxJava types that are both an Observable and a Consumer, providing Subjects without terminal events.
RxRelay is an RxJava library that provides Relay types, which are both Observable and Consumer interfaces. It solves the problem of bridging non-reactive APIs into reactive streams without the risk of accidentally triggering terminal states like onComplete or onError, which can render Subjects unusable.
RxJava developers, particularly those working on Android or Java applications, who need to integrate non-reactive APIs or manage event streams without terminal event side effects.
Developers choose RxRelay over standard Subjects because it eliminates the stateful risk of terminal events, ensuring Relays remain usable for continuous data flow, making it safer for transitional or bridge scenarios in reactive programming.
RxJava types that are both an Observable and a Consumer.
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Relays prevent accidental onComplete or onError calls, ensuring continuous data flow without rendering the stream unusable, as highlighted in the README's philosophy on avoiding stateful damage.
Provides BehaviorRelay, PublishRelay, and ReplayRelay with clear examples to seamlessly integrate non-reactive APIs into RxJava streams, simplifying transitional code.
The Relay base class allows for custom implementations, offering flexibility for specific use cases beyond the built-in types, as noted in the documentation.
BehaviorRelay maintains and emits the most recent state, useful for scenarios like event buses in Android apps without terminal event side effects.
Tied exclusively to RxJava, making it irrelevant for projects using other reactive libraries or non-reactive codebases, limiting its ecosystem.
ReplayRelay buffers all observed items indefinitely, which can lead to memory leaks if not managed carefully, with no built-in mechanisms to limit history.
Intentionally omits onComplete and onError, which might be necessary for scenarios requiring explicit stream completion or error handling, forcing workarounds.
As the README admits, as more code becomes reactive, the need for Relays decreases, potentially making them transitional tools with limited long-term value.