Struct indradb::MemoryTransaction

pub struct MemoryTransaction { /* fields omitted */ }

A transaction for manipulating in-memory-only datastores.

Trait Implementations

impl Debug for MemoryTransaction

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Transaction for MemoryTransaction

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

Creates a new vertex.

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

Gets a range of vertices specified by a query.

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

Deletes existing vertices specified by a query.

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(&self, q: EdgeQuery) -> Result<Vec<Edge>>

Gets a range of edges specified by a query.

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

Deletes a set of edges specified by a query.

fn get_edge_count(&self, q: EdgeQuery) -> Result<u64>

Gets the number of edges that match a query.

fn get_global_metadata(&self, name: String) -> Result<Option<JsonValue>>

Gets a global metadata value.

fn set_global_metadata(&self, name: String, value: JsonValue) -> Result<()>

Sets a global metadata value.

fn delete_global_metadata(&self, name: String) -> Result<()>

Deletes a global metadata value.

fn get_vertex_metadata(
    &self,
    q: VertexQuery,
    name: String
) -> Result<Vec<VertexMetadata>>

Gets a vertex metadata value.

fn set_vertex_metadata(
    &self,
    q: VertexQuery,
    name: String,
    value: JsonValue
) -> Result<()>

Sets a vertex metadata value.

fn delete_vertex_metadata(&self, q: VertexQuery, name: String) -> Result<()>

Deletes a vertex metadata value.

fn get_edge_metadata(
    &self,
    q: EdgeQuery,
    name: String
) -> Result<Vec<EdgeMetadata>>

Gets an edge metadata value.

fn set_edge_metadata(
    &self,
    q: EdgeQuery,
    name: String,
    value: JsonValue
) -> Result<()>

Sets an edge metadata value.

fn delete_edge_metadata(&self, q: EdgeQuery, name: String) -> Result<()>

Deletes an edge metadata value.

fn commit(self) -> Result<()>

Commits the transaction.

fn rollback(self) -> Result<()>

Rolls the transaction back.