Trait GraphStore 

pub trait GraphStore {
    // Required methods
    fn add_triple(&mut self, graph: &GraphName, triple: Triple) -> Result<bool>;
    fn remove_triple(
        &mut self,
        graph: &GraphName,
        triple: &Triple,
    ) -> Result<bool>;
    fn contains_triple(
        &self,
        graph: &GraphName,
        triple: &Triple,
    ) -> Result<bool>;
    fn triples_in_graph(&self, graph: &GraphName) -> Result<Vec<Triple>>;
    fn clear_graph(&mut self, graph: &GraphName) -> Result<usize>;
    fn drop_graph(&mut self, graph: &GraphName) -> Result<bool>;
}

Trait for pluggable named-graph triple-store backends

Implementors provide the six core operations needed to manage triples within named graphs. See NamedGraphManager for an in-memory implementation.

Required Methods

fn add_triple(&mut self, graph: &GraphName, triple: Triple) -> Result<bool>

Add a triple to the given graph

Returns Ok(true) if the triple was newly inserted.

fn remove_triple(&mut self, graph: &GraphName, triple: &Triple) -> Result<bool>

Remove a triple from the given graph

Returns Ok(true) if the triple was present.

fn contains_triple(&self, graph: &GraphName, triple: &Triple) -> Result<bool>

Returns true if the graph contains the triple

fn triples_in_graph(&self, graph: &GraphName) -> Result<Vec<Triple>>

Returns an owned list of all triples in the graph

fn clear_graph(&mut self, graph: &GraphName) -> Result<usize>

Remove all triples from the graph (graph entry is kept)

Returns the number of triples removed.

fn drop_graph(&mut self, graph: &GraphName) -> Result<bool>

Delete the graph and all its triples

Returns Ok(true) if the graph existed.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors

impl GraphStore for NamedGraphManager

In-memory implementation of GraphStore backed by NamedGraphManager