Struct SharedSubgraphRegistry 

pub struct SharedSubgraphRegistry { /* private fields */ }

Reference-counted registry for canonical shared subgraphs.

Implementations

impl SharedSubgraphRegistry

pub const fn new() -> Self

Creates an empty shared subgraph registry.

pub fn acquire(&mut self, key: impl Into<String>) -> SharedSubgraphAcquire

Acquires a reference to the canonical subgraph for key.

pub fn release(&mut self, id: SharedSubgraphId) -> Option<SharedSubgraphRelease>

Releases one reference and reports whether teardown is now required.

pub fn resolve(&self, key: &str) -> Option<SharedSubgraphId>

Resolves a canonical key to an active shared subgraph identifier.

pub fn ref_count(&self, id: SharedSubgraphId) -> Option<usize>

Returns the active reference count for id.

pub fn len(&self) -> usize

Returns the number of active shared subgraphs.

pub fn is_empty(&self) -> bool

Returns true when no shared subgraphs are active.

Trait Implementations

impl Clone for SharedSubgraphRegistry

fn clone(&self) -> SharedSubgraphRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SharedSubgraphRegistry

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SharedSubgraphRegistry

fn default() -> SharedSubgraphRegistry

Returns the “default value” for a type.

impl Eq for SharedSubgraphRegistry

impl PartialEq for SharedSubgraphRegistry

fn eq(&self, other: &SharedSubgraphRegistry) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SharedSubgraphRegistry