Trait json_ld::Vocab

pub trait Vocab: AsIri + Clone + PartialEq + Eq + Hash {
    fn from_iri(iri: Iri<'_>) -> Option<Self>;
}

Vocabulary type.

Directly using IriBuf to identify each node can be very expensive. When you know in advance the set of IRIs will be used in your application, it is more effective to use an enum type where each variant represents an IRI. In this case, storing and comparing IRIs become very cheap.

In this setting, such enum type can implement the Vocab trait, automatically implemented in most cases. It can then be wrapped around the Vocab type to handle unexpected IRIs, and be used as identifier type instead of IriBuf.

Required methods

fn from_iri(iri: Iri<'_>) -> Option<Self>

Implementors

impl<T: AsIri + Clone + PartialEq + Eq + Hash> Vocab for T where
    for<'a> T: TryFrom<Iri<'a>>,