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StateUpdatedOnlyReducer

oris_kernel::kernel::reducer

Struct StateUpdatedOnlyReducer 

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pub struct StateUpdatedOnlyReducer;
Expand description

Reducer that applies only StateUpdated (deserialize payload → replace state); other events no-op. Use for replay when the event log was produced by the graph (StateUpdated, Interrupted, Resumed, Completed).

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impl<S> Reducer<S> for StateUpdatedOnlyReducer
where S: KernelState + DeserializeOwned,

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fn apply( &self, state: &mut S, event: &SequencedEvent, ) -> Result<(), KernelError>

Applies a single sequenced event to the state (in place).

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.