Struct json_ld::ChainLoader

pub struct ChainLoader<L1, L2>(/* private fields */);

• ChainLoader: loads document from the first loader, otherwise falls back to the second one.

This can be useful for combining, for example, an FsLoader for loading some contexts from a local cache, and a ReqwestLoader for loading any other context from the web.

Note that it is also possible to nest several ChainLoaders, to combine more than two loaders.

Implementations

impl<L1, L2> ChainLoader<L1, L2>

pub fn new(l1: L1, l2: L2) -> ChainLoader<L1, L2>

Build a new chain loader

Trait Implementations

impl<L1, L2> Loader for ChainLoader<L1, L2>

where L1: Loader, L2: Loader,

async fn load(&self, url: &Iri) -> Result<RemoteDocument, LoadError>

Loads the document behind the given IRI.

async fn load_with<V>( &self, vocabulary: &mut V, url: <V as IriVocabulary>::Iri, ) -> Result<RemoteDocument<<V as IriVocabulary>::Iri>, LoadError>

where V: IriVocabularyMut, <V as IriVocabulary>::Iri: Clone + Eq + Hash,

Loads the document behind the given IRI, using the given vocabulary.