Struct LiteralRef 

pub struct LiteralRef<'a>(/* private fields */);

A borrowed RDF literal.

The default string formatter is returning an N-Triples, Turtle, and SPARQL compatible representation:

use oxrdf::LiteralRef;
use oxrdf::vocab::xsd;

assert_eq!(
    "\"foo\\nbar\"",
    LiteralRef::new_simple_literal("foo\nbar").to_string()
);

assert_eq!(
    r#""1999-01-01"^^<http://www.w3.org/2001/XMLSchema#date>"#,
    LiteralRef::new_typed_literal("1999-01-01", xsd::DATE).to_string()
);

Implementations

impl<'a> LiteralRef<'a>

pub const fn new_simple_literal(value: &'a str) -> LiteralRef<'a>

Builds an RDF simple literal.

pub fn new_typed_literal( value: &'a str, datatype: impl Into<NamedNodeRef<'a>>, ) -> LiteralRef<'a>

Builds an RDF literal with a datatype.

pub const fn new_language_tagged_literal_unchecked( value: &'a str, language: &'a str, ) -> LiteralRef<'a>

Builds an RDF language-tagged string.

It is the responsibility of the caller to check that language is valid BCP47 language tag, and is lowercase.

Literal::new_language_tagged_literal() is a safe version of this constructor and should be used for untrusted data.

pub const fn value(self) -> &'a str

The literal lexical form

pub const fn language(self) -> Option<&'a str>

The literal language tag if it is a language-tagged string.

Language tags are defined by the BCP47. They are normalized to lowercase by this implementation.

pub const fn datatype(self) -> NamedNodeRef<'a>

The literal datatype.

The datatype of language-tagged string is always rdf:langString. The datatype of simple literals is xsd:string.

pub const fn is_plain(self) -> bool

👎Deprecated since 0.3.0: Plain literal concept is removed in RDF 1.1

Checks if this literal could be seen as an RDF 1.0 plain literal.

It returns true if the literal is a language-tagged string or has the datatype xsd:string.

pub fn into_owned(self) -> Literal

pub const fn destruct( self, ) -> (&'a str, Option<NamedNodeRef<'a>>, Option<&'a str>)

👎Deprecated since 0.3.0: Use directly .value(), .datatype() and .language()

Extract components from this literal

Trait Implementations

impl<'a> Clone for LiteralRef<'a>

fn clone(&self) -> LiteralRef<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for LiteralRef<'a>

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

Formats the value using the given formatter.

impl Display for LiteralRef<'_>

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

Formats the value using the given formatter.

impl<'a> From<&'a Literal> for LiteralRef<'a>

fn from(node: &'a Literal) -> LiteralRef<'a>

Converts to this type from the input type.

impl<'a> From<&'a str> for LiteralRef<'a>

fn from(value: &'a str) -> LiteralRef<'a>

Converts to this type from the input type.

impl From<LiteralRef<'_>> for PlainTermScalar

fn from(term: LiteralRef<'_>) -> PlainTermScalar

Converts to this type from the input type.

impl From<LiteralRef<'_>> for Term

fn from(literal: LiteralRef<'_>) -> Term

Converts to this type from the input type.

impl<'a> From<LiteralRef<'a>> for Literal

fn from(node: LiteralRef<'a>) -> Literal

Converts to this type from the input type.

impl<'a> From<LiteralRef<'a>> for TermRef<'a>

fn from(literal: LiteralRef<'a>) -> TermRef<'a>

Converts to this type from the input type.

impl<'a> Hash for LiteralRef<'a>

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq<Literal> for LiteralRef<'_>

fn eq(&self, other: &Literal) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialEq<LiteralRef<'_>> for Literal

fn eq(&self, other: &LiteralRef<'_>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> PartialEq for LiteralRef<'a>

fn eq(&self, other: &LiteralRef<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'data> TryFrom<LiteralRef<'data>> for TypedValueRef<'data>

type Error = TermToTypedValueError

The type returned in the event of a conversion error.

fn try_from( value: LiteralRef<'data>, ) -> Result<TypedValueRef<'data>, <TypedValueRef<'data> as TryFrom<LiteralRef<'data>>>::Error>

Performs the conversion.

impl<'a> Copy for LiteralRef<'a>

impl<'a> Eq for LiteralRef<'a>

impl<'a> StructuralPartialEq for LiteralRef<'a>