Struct indradb::MemoryTransaction

pub struct MemoryTransaction { /* fields omitted */ }

A transaction for manipulating in-memory datastores.

Trait Implementations

impl Debug for MemoryTransaction

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

Formats the value using the given formatter.

impl Transaction for MemoryTransaction

fn create_vertex(&self, vertex: &Vertex) -> Result<bool>

Creates a new vertex. Returns whether the vertex was successfully created - if this is false, it's because a vertex with the same UUID already exists.

fn get_vertices<Q: Into<VertexQuery>>(&self, q: Q) -> Result<Vec<Vertex>>

Gets a range of vertices specified by a query.

fn delete_vertices<Q: Into<VertexQuery>>(&self, q: Q) -> Result<()>

Deletes existing vertices specified by a query.

fn get_vertex_count(&self) -> Result<u64>

Gets the number of vertices in the datastore.

fn create_edge(&self, key: &EdgeKey) -> Result<bool>

Creates a new edge. If the edge already exists, this will update it with a new update datetime. Returns whether the edge was successfully created - if this is false, it's because one of the specified vertices is missing.

fn get_edges<Q: Into<EdgeQuery>>(&self, q: Q) -> Result<Vec<Edge>>

Gets a range of edges specified by a query.

fn delete_edges<Q: Into<EdgeQuery>>(&self, q: Q) -> Result<()>

Deletes a set of edges specified by a query.

fn get_edge_count(
    &self,
    id: Uuid,
    t: Option<&Type>,
    direction: EdgeDirection
) -> Result<u64>

Gets the number of edges associated with a vertex.

fn get_vertex_properties(
    &self,
    q: VertexPropertyQuery
) -> Result<Vec<VertexProperty>>

Gets vertex properties.

fn get_all_vertex_properties<Q: Into<VertexQuery>>(
    &self,
    q: Q
) -> Result<Vec<VertexProperties>>

Gets all vertex properties.

fn set_vertex_properties(
    &self,
    q: VertexPropertyQuery,
    value: &JsonValue
) -> Result<()>

Sets a vertex properties.

fn delete_vertex_properties(&self, q: VertexPropertyQuery) -> Result<()>

Deletes vertex properties.

fn get_edge_properties(&self, q: EdgePropertyQuery) -> Result<Vec<EdgeProperty>>

Gets edge properties.

fn get_all_edge_properties<Q: Into<EdgeQuery>>(
    &self,
    q: Q
) -> Result<Vec<EdgeProperties>>

Gets all edge properties.

fn set_edge_properties(
    &self,
    q: EdgePropertyQuery,
    value: &JsonValue
) -> Result<()>

Sets edge properties.

fn delete_edge_properties(&self, q: EdgePropertyQuery) -> Result<()>

Deletes edge properties.

fn create_vertex_from_type(&self, t: Type) -> Result<Uuid>

Creates a new vertex with just a type specification. As opposed to create_vertex, this is used when you do not want to manually specify the vertex's UUID. Returns the new vertex's UUID.