Struct GraphDelta 

pub struct GraphDelta { /* private fields */ }

Records add / remove vertex / edge operations (Section 9.3, Paper 2).

Implementations

impl GraphDelta

pub fn new() -> Self

pub fn add_vertex(&mut self, vertex: Vertex)

pub fn remove_vertex(&mut self, vertex_id: VertexId)

pub fn add_edge(&mut self, edge: Edge)

pub fn remove_edge(&mut self, edge_id: EdgeId)

pub fn ops(&self) -> &[DeltaOp]

pub fn is_empty(&self) -> bool

pub fn len(&self) -> usize

pub fn affected_vertex_ids(&self) -> BTreeSet<VertexId>

Set of vertex ids touched by any op (vertices added / removed, plus the source / target of added edges). Edge removal does not resurrect a vertex id since the operation only stores the edge id.

pub fn affected_edge_labels(&self) -> BTreeSet<String>

Set of edge labels touched by AddEdge ops. Used by the versioned store to invalidate path indexes that depend on a label.

Trait Implementations

impl Clone for GraphDelta

fn clone(&self) -> GraphDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphDelta

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

Formats the value using the given formatter.

impl Default for GraphDelta

fn default() -> GraphDelta

Returns the “default value” for a type.