struct CollectionState<T> {
pub description: CollectionDescription<T>,
pub read_capabilities: MutableAntichain<T>,
pub implied_capability: Antichain<T>,
pub read_policy: ReadPolicy<T>,
pub storage_dependencies: Vec<GlobalId>,
pub write_frontier: Antichain<T>,
pub collection_metadata: CollectionMetadata,
}
Expand description
State maintained about individual collections.
Fields§
§description: CollectionDescription<T>
Description with which the collection was created
read_capabilities: MutableAntichain<T>
Accumulation of read capabilities for the collection.
This accumulation will always contain self.implied_capability
, but may
also contain capabilities held by others who have read dependencies on
this collection.
implied_capability: Antichain<T>
The implicit capability associated with collection creation. This should never be less than the since of the associated persist collection.
read_policy: ReadPolicy<T>
The policy to use to downgrade self.implied_capability
.
storage_dependencies: Vec<GlobalId>
Storage identifiers on which this collection depends.
write_frontier: Antichain<T>
Reported write frontier.
collection_metadata: CollectionMetadata
Implementations§
source§impl<T: TimelyTimestamp> CollectionState<T>
impl<T: TimelyTimestamp> CollectionState<T>
sourcepub fn new(
description: CollectionDescription<T>,
since: Antichain<T>,
write_frontier: Antichain<T>,
storage_dependencies: Vec<GlobalId>,
metadata: CollectionMetadata,
) -> Self
pub fn new( description: CollectionDescription<T>, since: Antichain<T>, write_frontier: Antichain<T>, storage_dependencies: Vec<GlobalId>, metadata: CollectionMetadata, ) -> Self
Creates a new collection state, with an initial read policy valid from
since
.
sourcepub fn is_dropped(&self) -> bool
pub fn is_dropped(&self) -> bool
Returns whether the collection was dropped.
Trait Implementations§
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impl<T> Freeze for CollectionState<T>
impl<T> !RefUnwindSafe for CollectionState<T>
impl<T> Send for CollectionState<T>where
T: Send,
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T: Sync,
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T: Unpin,
impl<T> !UnwindSafe for CollectionState<T>
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