[−][src]Module sophia::term

Terms are the building blocks of an RDF graph. There are four types of terms: IRIs, blank nodes (BNode for short), literals and variables.

NB: variable only exist in generalized RDF.

This module defines a generic type Term which can be derived differently depending on your needs.

RefTerm<'a> (alias of Term<&'a str>) should be used for very short-lived terms, i.e. terms that live less than 'a, which is the lifetime of their underlying text.
BoxTerm (alias of Term<Box<str>>) should be used when the term may outlive the text used to create it.
RcTerm (alias of Term<Rc<str>>) should also be used for long-lived terms, especially if they need to be cloned multiple times. The use of Rc prevents the duplication of the underlying text, while ensuring that it is cleaned when appropriate.
ArcTerm (alias of Term<Arc<str>>) should be used when, additionally, terms need to be sent to other threads.
StaticTerm (alias of Term<&'static str>) is a special case of RefTerm` where the underlying text is a static string. Those terms can live as long as the program runs, and be cloned and sent without any restriction.

Re-exports

pub use self::LiteralKind::*;

pub use self::Term::*;

factory	A `TermFactory` can be used to create terms while preventing the proliferation of duplicate string.
index_map	A trait for bidirectional mappings between terms and indexes of a smaller type.
iri_rfc3987	Implementation of IRIs as per [RFC 3987].
matcher	This crate defines generic traits and default implementations for matchers, objects that can be used to match zero, one or several terms.

BNodeId	Internal representation of a blank node identifier.
IriData	Internal representation of an IRI.

LiteralKind	There are two kinds of literals: language-tagged, and typed.
Normalization	Noramlization policies are used to ensure that IRIs are represented in a given format.
Term	Generic type for RDF terms.

Trait alias for types holding the textual data of terms.

Check the equality of two graph names (Option<&Term>) using possibly different TermData.

ArcTerm	Convenient alias for a specialization of `Term<T>`.
BoxTerm	Convenient alias for a specialization of `Term<T>`.
RcTerm	Convenient alias for a specialization of `Term<T>`.
RefTerm	Convenient alias for a specialization of `Term<T>`.
StaticTerm	Convenient alias for a specialization of `Term<T>`.