Trait LinkStore 

pub trait LinkStore {
    // Required methods
    fn create_link(&mut self, link: Link) -> ThingdResult<Link>;
    fn delete_link(&mut self, id: &str) -> ThingdResult<bool>;
    fn get_link(&self, id: &str) -> ThingdResult<Option<Link>>;
    fn get_neighbors(
        &self,
        reference: &str,
        direction: LinkDirection,
        options: LinkQueryOptions,
    ) -> ThingdResult<Vec<Link>>;
    fn count_links(&self) -> ThingdResult<u64>;
}

Graph link operations.

Required Methods

fn create_link(&mut self, link: Link) -> ThingdResult<Link>

Create a new graph link.

Errors

Returns an error when the link cannot be persisted.

fn delete_link(&mut self, id: &str) -> ThingdResult<bool>

Delete a graph link by id.

Errors

Returns an error when the link cannot be deleted.

fn get_link(&self, id: &str) -> ThingdResult<Option<Link>>

Get a graph link by id.

Errors

Returns an error when the link cannot be read.

fn get_neighbors( &self, reference: &str, direction: LinkDirection, options: LinkQueryOptions, ) -> ThingdResult<Vec<Link>>

Get neighbors of a reference (outgoing, incoming, or both).

Errors

Returns an error when neighbors cannot be queried.

fn count_links(&self) -> ThingdResult<u64>

Count total links.

Errors

Returns an error when count fails.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors

impl LinkStore for MemoryEngine

impl LinkStore for PersistentEngine

Available on crate feature persistent only.