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InMemoryGraphStore

eqiora::graph

Struct InMemoryGraphStore 

pub struct InMemoryGraphStore { /* private fields */ }
Description

Phase 0 backend. Commits clone a compact state and swap one Arc, making atomicity and snapshot isolation obvious before optimization.

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impl InMemoryGraphStore

Signature links:§InMemoryGraphStore

pub fn new() -> InMemoryGraphStore

Signature links:newInMemoryGraphStore

Empty store at revision zero.

pub fn restore_snapshot( transaction: Transaction, revision: Revision, ) -> Result<InMemoryGraphStore, Vec<Diagnostic>>

Signature links:restore_snapshotTransactionRevisionResultInMemoryGraphStoreVecDiagnostic

Restore one complete logical snapshot at its exact nonzero revision.

This is snapshot hydration, not historical replay: transaction must describe the complete state and carry no optimistic preconditions. The returned store leaves commit history empty because the unavailable history cannot be reconstructed from one checkpoint. Subsequent ordinary commits advance from the restored revision and record only changes made after hydration.

§Errors

Returns structured diagnostics if the revision is zero, the transaction has preconditions, or its complete state is invalid.

Trait Implementations§

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impl Clone for InMemoryGraphStore

Signature links:§CloneInMemoryGraphStore
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fn clone(&self) -> InMemoryGraphStore

Signature links:§cloneInMemoryGraphStore
Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Signature links:unstableSource§clone_from
Performs copy-assignment from source. Read more
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impl Debug for InMemoryGraphStore

Signature links:§DebugInMemoryGraphStore
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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Signature links:§fmtFormatterResult()Error
Formats the value using the given formatter. Read more
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impl Default for InMemoryGraphStore

Signature links:§DefaultInMemoryGraphStore
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fn default() -> InMemoryGraphStore

Signature links:§defaultInMemoryGraphStore
Returns the “default value” for a type. Read more
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impl GraphStore for InMemoryGraphStore

Signature links:§GraphStoreInMemoryGraphStore
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fn validate(&self, transaction: &Transaction) -> Vec<Diagnostic>

Signature links:§validateTransactionVecDiagnostic
Validate without committing. An empty result means the transaction would succeed against the current snapshot.
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fn commit( &mut self, transaction: Transaction, ) -> Result<Committed, Vec<Diagnostic>>

Signature links:§commitTransactionResultCommittedVecDiagnostic
Atomically apply a transaction and append its provenance record. Read more
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fn snapshot(&self) -> Snapshot

Signature links:§snapshotSnapshot
Obtain a snapshot-isolated immutable view.
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fn revision(&self) -> Revision

Signature links:§revisionRevision
Current federation revision.

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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