Module rdf_types::vocabulary

Lexical domain abstractions.

Having to store, clone and compare blank ids, IRIs and literals is expensive and may become a burden to a RDF-intensive application. This modules defines the Vocabulary trait (and similar traits) to abstract away the lexical representation of resources.

Using vocabularies, an IRI can be represented as a simple integer, or enum type, drastically reducing the cost of storage and comparison.

Structs

• BlankIdIndex
  Blank id index.
• ByRef
  Wrapper type to allow Term<Id<&V::Iri, &V::BlankId>, &V::Literal> to be extracted into Term using the ExtractFromVocabulary<V> trait.
• IndexVocabulary
  Vocabulary that stores IRIs and blank node identifiers with a unique index.
• IriIndex
  Iri index.
• LiteralIndex
  Literal index.
• Predicate
  Wrapper type to allow an arbitrary type to be recognized as an RDF IRI predicate.
• Scoped
  Vocabulary wrapper that helps avoid blank id collisions.

Enums

• BlankIdOrIndex
  Blank node identifier index.
• IriOrIndex
  IRI or index.
• LiteralOrIndex
  IRI index.

Traits

• BlankIdVocabulary
  Blank node identifier vocabulary.
• BlankIdVocabularyMut
  Mutable blank node identifier vocabulary.
• EmbedIntoVocabulary
  Value that can be embedded into the given vocabulary by consuming it.
• EmbeddedIntoVocabulary
  Value that can be embedded into the given vocabulary without consuming it.
• ExtractFromVocabulary
  Extract the RDF component values (IRIs, blank node identifiers, etc.) embedded into the vocabulary V.
• ExtractedFromVocabulary
  Exports the RDF component values (IRIs, blank node identifiers, etc.) embedded into the vocabulary V.
• IndexedBlankId
  Partly indexed blank node identifier type.
• IndexedIri
  Partly indexed IRI identifier type.
• IndexedLiteral
  Partly indexed literal value type.
• IriVocabulary
  IRI vocabulary.
• IriVocabularyMut
  Mutable IRI vocabulary.
• LiteralVocabulary
  Literal value vocabulary.
• LiteralVocabularyMut
  Mutable literal value vocabulary.
• TryExtractFromVocabulary
  Try to extract the RDF component values (IRIs, blank node identifiers, etc.) embedded into the vocabulary V. This is the fallible version of ExtractFromVocabulary.
• Vocabulary
  Vocabulary.
• VocabularyMut
  Mutable vocabulary.

Functions

• no_vocabulary
  Returns a static reference to unit (no vocabulary).
• no_vocabulary_mut
  Returns a static mutable reference to unit (no vocabulary).

Type Aliases

• NoVocabulary
  No vocabulary.