CollectionBundle

flow::compute::types

Struct CollectionBundle 

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pub struct CollectionBundle<T: 'static = (Row, i64, i64)> {
    pub collection: Collection<T>,
    pub arranged: BTreeMap<Vec<ScalarExpr>, Arranged>,
}
Expand description

A bundle of the various ways a collection can be represented.

This type maintains the invariant that it does contain at least one(or both) valid source of data, either a collection or at least one arrangement. This is for convenience of reading the data from the collection.

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§collection: Collection<T>

This is useful for passively reading the new updates from the collection

Invariant: the timestamp of the updates should always not greater than now, since future updates should be stored in the arrangement

§arranged: BTreeMap<Vec<ScalarExpr>, Arranged>

the key ScalarExpr indicate how the keys(also a [Row]) used in Arranged is extract from collection’s [Row] So it is the “index” of the arrangement

The Arranged is the actual data source, it can be used to read the data from the collection by using the key indicated by the Vec<ScalarExpr> There is a false positive in using Vec<ScalarExpr> as key due to ScalarExpr::Literal contain a Value which have bytes variant

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impl<T: 'static> CollectionBundle<T>

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pub fn from_collection(collection: Collection<T>) -> Self

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impl<T: 'static + Clone> CollectionBundle<T>

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pub fn clone(&self, df: &mut Dfir<'_>) -> Self

Trait Implementations§

Auto Trait Implementations§

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impl<T> Freeze for CollectionBundle<T>

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impl<T = (Row, i64, i64)> !RefUnwindSafe for CollectionBundle<T>

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impl<T = (Row, i64, i64)> !Send for CollectionBundle<T>

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impl<T = (Row, i64, i64)> !Sync for CollectionBundle<T>

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impl<T> Unpin for CollectionBundle<T>

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impl<T = (Row, i64, i64)> !UnwindSafe for CollectionBundle<T>

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impl<T> Any for T
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fn convert_vec_box(value: Vec<Box<Self>>) -> Vec<Box<T>>

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fn convert_matrix(value: Vec<Vec<Self>>) -> Vec<Vec<T>>

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const ALIGN: usize

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fn propagate_header(self, header: HeaderName) -> PropagateHeader<Self>
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Propagate a header from the request to the response. Read more
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fn add_extension<T>(self, value: T) -> AddExtension<Self, T>
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Add some shareable value to request extensions. Read more
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fn map_request_body<F>(self, f: F) -> MapRequestBody<Self, F>
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fn compression(self) -> Compression<Self>
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fn trace_for_http(self) -> Trace<Self, SharedClassifier<ServerErrorsAsFailures>>
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High level tracing that classifies responses using HTTP status codes. Read more
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High level tracing that classifies responses using gRPC headers. Read more
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fn follow_redirects(self) -> FollowRedirect<Self>
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Follow redirect resposes using the Standard policy. Read more
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fn sensitive_headers( self, headers: impl IntoIterator<Item = HeaderName>, ) -> SetSensitiveRequestHeaders<SetSensitiveResponseHeaders<Self>>
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Mark headers as sensitive on both requests and responses. Read more
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fn sensitive_request_headers( self, headers: impl IntoIterator<Item = HeaderName>, ) -> SetSensitiveRequestHeaders<Self>
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Mark headers as sensitive on requests. Read more
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fn sensitive_response_headers( self, headers: impl IntoIterator<Item = HeaderName>, ) -> SetSensitiveResponseHeaders<Self>
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Mark headers as sensitive on responses. Read more
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fn override_request_header<M>( self, header_name: HeaderName, make: M, ) -> SetRequestHeader<Self, M>
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fn set_request_id<M>( self, header_name: HeaderName, make_request_id: M, ) -> SetRequestId<Self, M>
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fn set_x_request_id<M>(self, make_request_id: M) -> SetRequestId<Self, M>
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Add request id header and extension, using x-request-id as the header name. Read more
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fn propagate_request_id( self, header_name: HeaderName, ) -> PropagateRequestId<Self>
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Propgate request ids from requests to responses. Read more
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fn propagate_x_request_id(self) -> PropagateRequestId<Self>
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Propgate request ids from requests to responses, using x-request-id as the header name. Read more
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fn catch_panic(self) -> CatchPanic<Self, DefaultResponseForPanic>
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Catch panics and convert them into 500 Internal Server responses. Read more
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fn request_body_limit(self, limit: usize) -> RequestBodyLimit<Self>
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Intercept requests with over-sized payloads and convert them into 413 Payload Too Large responses. Read more
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fn trim_trailing_slash(self) -> NormalizePath<Self>
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impl<SS, SP> SupersetOf<SS> for SP
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Checks if self is actually part of its subset T (and can be converted to it).
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Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn tap(self, func: impl FnOnce(&Self)) -> Self

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