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GraphStorage

uqa_graph

Trait GraphStorage 

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pub trait GraphStorage: Send + Sync {

Show 24 methods    // Required methods
    fn begin_write(&self) -> GraphStoreResult<Box<dyn GraphWriteTransaction>>;
    fn graph_names(&self) -> GraphStoreResult<Vec<String>>;
    fn has_graph(&self, graph: &str) -> GraphStoreResult<bool>;
    fn create_graph(&self, graph: &str) -> GraphStoreResult<()>;
    fn delete_graph(&self, graph: &str) -> GraphStoreResult<()>;
    fn registry(&self, graph: &str) -> GraphStoreResult<GraphLabelRegistry>;
    fn save_registry(
        &self,
        graph: &str,
        registry: &GraphLabelRegistry,
    ) -> GraphStoreResult<()>;
    fn counter(&self, kind: GraphEntityKind) -> GraphStoreResult<Option<u64>>;
    fn save_counter(
        &self,
        kind: GraphEntityKind,
        next: u64,
    ) -> GraphStoreResult<()>;
    fn vertex(&self, id: u64) -> GraphStoreResult<Option<Vertex>>;
    fn edge(&self, id: u64) -> GraphStoreResult<Option<Edge>>;
    fn save_vertex(&self, vertex: &Vertex) -> GraphStoreResult<()>;
    fn save_edge(&self, edge: &Edge) -> GraphStoreResult<()>;
    fn delete_vertex(&self, id: u64) -> GraphStoreResult<()>;
    fn delete_edge(&self, id: u64) -> GraphStoreResult<()>;
    fn ids(
        &self,
        filter: GraphEntityFilter<'_>,
        after: Option<u64>,
        limit: usize,
    ) -> GraphStoreResult<Vec<u64>>;
    fn count(&self, filter: GraphEntityFilter<'_>) -> GraphStoreResult<u64>;
    fn max_id(&self, kind: GraphEntityKind) -> GraphStoreResult<Option<u64>>;
    fn memberships(
        &self,
        kind: GraphEntityKind,
        id: u64,
    ) -> GraphStoreResult<Vec<String>>;
    fn has_membership(
        &self,
        kind: GraphEntityKind,
        id: u64,
        graph: &str,
    ) -> GraphStoreResult<bool>;
    fn attach(
        &self,
        kind: GraphEntityKind,
        id: u64,
        graph: &str,
    ) -> GraphStoreResult<()>;
    fn detach(
        &self,
        kind: GraphEntityKind,
        id: u64,
        graph: &str,
    ) -> GraphStoreResult<()>;

    // Provided methods
    fn fork_overlay(&self) -> Option<Arc<dyn GraphStorage>> { ... }
    fn unmodified_read_snapshot(&self) -> Option<PersistentGraphStore> { ... }

}
Expand description

No entity, membership, or adjacency collection is retained by a handle. Multi-read operations run in the caller’s pinned storage transaction.

Required Methods§

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fn begin_write(&self) -> GraphStoreResult<Box<dyn GraphWriteTransaction>>

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fn graph_names(&self) -> GraphStoreResult<Vec<String>>

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fn has_graph(&self, graph: &str) -> GraphStoreResult<bool>

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fn create_graph(&self, graph: &str) -> GraphStoreResult<()>

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fn delete_graph(&self, graph: &str) -> GraphStoreResult<()>

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fn registry(&self, graph: &str) -> GraphStoreResult<GraphLabelRegistry>

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fn save_registry( &self, graph: &str, registry: &GraphLabelRegistry, ) -> GraphStoreResult<()>

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fn counter(&self, kind: GraphEntityKind) -> GraphStoreResult<Option<u64>>

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fn save_counter(&self, kind: GraphEntityKind, next: u64) -> GraphStoreResult<()>

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fn vertex(&self, id: u64) -> GraphStoreResult<Option<Vertex>>

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fn edge(&self, id: u64) -> GraphStoreResult<Option<Edge>>

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fn save_vertex(&self, vertex: &Vertex) -> GraphStoreResult<()>

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fn save_edge(&self, edge: &Edge) -> GraphStoreResult<()>

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fn delete_vertex(&self, id: u64) -> GraphStoreResult<()>

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fn delete_edge(&self, id: u64) -> GraphStoreResult<()>

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fn ids( &self, filter: GraphEntityFilter<'_>, after: Option<u64>, limit: usize, ) -> GraphStoreResult<Vec<u64>>

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fn count(&self, filter: GraphEntityFilter<'_>) -> GraphStoreResult<u64>

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fn max_id(&self, kind: GraphEntityKind) -> GraphStoreResult<Option<u64>>

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fn memberships( &self, kind: GraphEntityKind, id: u64, ) -> GraphStoreResult<Vec<String>>

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fn has_membership( &self, kind: GraphEntityKind, id: u64, graph: &str, ) -> GraphStoreResult<bool>

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fn attach( &self, kind: GraphEntityKind, id: u64, graph: &str, ) -> GraphStoreResult<()>

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fn detach( &self, kind: GraphEntityKind, id: u64, graph: &str, ) -> GraphStoreResult<()>

Provided Methods§

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fn fork_overlay(&self) -> Option<Arc<dyn GraphStorage>>

Copy only transaction-local write identities when preparing a new command candidate. The underlying durable snapshots remain shared.

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fn unmodified_read_snapshot(&self) -> Option<PersistentGraphStore>

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§