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BranchedStream

krabka_client_streams::dsl::kstream

Struct BranchedStream 

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pub struct BranchedStream<K, V, KS = <K as DefaultSerde>::Serde, VS = <V as DefaultSerde>::Serde> { /* private fields */ }
Expand description

Builder returned by KStream::split.

Each branch call adds a filter-backed child node wired to the parent node. It returns a new KStream that carries only the records for which the predicate returns true.

Simplification vs JVM first-match-wins: this builder forwards records to ALL branches whose predicate matches. For mutually-exclusive predicates the behaviour is identical.

Drop BranchedStream before you call StreamsBuilder::build. It holds an Rc clone of the shared internal builder, and it otherwise makes the Rc::try_unwrap inside build fail.

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impl<K, V, KS, VS> BranchedStream<K, V, KS, VS>
where K: Any + Send + Clone + Default, V: Any + Send + Clone, KS: Clone, VS: Clone,

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pub fn branch<P>(&self, predicate: P) -> KStream<K, V, KS, VS>
where P: Fn(&K, &V) -> bool + Clone + Send + Sync + 'static,

Add a branch.

This method forwards records for which predicate(key, value) returns true to the returned KStream. It uses a KSTREAM-BRANCHCHILD- node backed by the same filter processor that KStream::filter uses.

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impl<K, V, KS = <K as DefaultSerde>::Serde, VS = <V as DefaultSerde>::Serde> !RefUnwindSafe for BranchedStream<K, V, KS, VS>

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impl<K, V, KS = <K as DefaultSerde>::Serde, VS = <V as DefaultSerde>::Serde> !Send for BranchedStream<K, V, KS, VS>

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impl<K, V, KS = <K as DefaultSerde>::Serde, VS = <V as DefaultSerde>::Serde> !Sync for BranchedStream<K, V, KS, VS>

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impl<K, V, KS = <K as DefaultSerde>::Serde, VS = <V as DefaultSerde>::Serde> !UnwindSafe for BranchedStream<K, V, KS, VS>

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impl<K, V, KS, VS> Freeze for BranchedStream<K, V, KS, VS>
where KS: Freeze, VS: Freeze,

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impl<K, V, KS, VS> Unpin for BranchedStream<K, V, KS, VS>
where KS: Unpin, VS: Unpin,

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impl<K, V, KS, VS> UnsafeUnpin for BranchedStream<K, V, KS, VS>
where KS: UnsafeUnpin, VS: UnsafeUnpin,

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