Enum TripleComponent 

#[non_exhaustive]
pub enum TripleComponent {
    Variable(String),
    Iri(String),
    Literal(Value),
    LangLiteral {
        value: String,
        lang: String,
    },
    BlankNode(String),
}

A component of a triple pattern.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Variable(String)

A variable to bind.

Iri(String)

A constant IRI.

Literal(Value)

A constant literal value.

LangLiteral

A language-tagged string literal (RDF rdf:langString).

Carries the lexical value and the BCP47 language tag separately so that the tag survives the translator to planner to RDF store round-trip.

Fields

value: String

The lexical string value.

lang: String

BCP47 language tag, e.g. "fr", "en-GB".

BlankNode(String)

A blank node with a scoped label (used in INSERT DATA).

Implementations

impl TripleComponent

pub fn as_variable(&self) -> Option<&str>

Returns the variable name if this component is a Variable, or None.

Trait Implementations

impl Clone for TripleComponent

fn clone(&self) -> TripleComponent

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TripleComponent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.