Trait json_ld::loader::Loader

pub trait Loader {
    type Document: Json;
    fn id(&self, iri: Iri<'_>) -> Option<Id>;
    fn iri(&self, id: Id) -> Option<Iri<'_>>;
    fn load<'a>(
        &'a mut self, 
        url: Iri<'_>
    ) -> BoxFuture<'a, Result<RemoteDocument<Self::Document>, Error>>;

    fn id_opt(&self, iri: Option<Iri<'_>>) -> Option<Id> { ... }
}

JSON document loader.

Each document is uniquely identified by the loader by a u32.

Associated Types

type Document: Json

The type of documents that can be loaded.

Required methods

fn id(&self, iri: Iri<'_>) -> Option<Id>

Returns the unique identifier associated to the given IRI, if any.

fn iri(&self, id: Id) -> Option<Iri<'_>>

Returns the IRI with the given identifier, if any.

fn load<'a>(
    &'a mut self,
    url: Iri<'_>
) -> BoxFuture<'a, Result<RemoteDocument<Self::Document>, Error>>

Loads the document behind the given IRI.

Provided methods

fn id_opt(&self, iri: Option<Iri<'_>>) -> Option<Id>

Returns the unique identifier associated to the given IRI, if any.

Returns None if the input iri is None.

Implementors

impl<J: Json + Clone + Send> Loader for FsLoader<J>

type Document = J

impl<J: Json> Loader for NoLoader<J>

type Document = J