Struct Quad

pub struct Quad {
    pub subject: Subject,
    pub predicate: NamedNode,
    pub object: Term,
    pub graph_name: GraphName,
}

Available on crate feature rdf only.

An owned triple in an RDF dataset.

The default string formatter is returning an N-Quads compatible representation:

use oxrdf::{Quad, NamedNode};

assert_eq!(
    "<http://example.com/s> <http://example.com/p> <http://example.com/o> <http://example.com/g>",
    Quad {
        subject: NamedNode::new("http://example.com/s")?.into(),
        predicate: NamedNode::new("http://example.com/p")?,
        object: NamedNode::new("http://example.com/o")?.into(),
        graph_name: NamedNode::new("http://example.com/g")?.into(),
    }.to_string()
);

Fields

subject: Subject

The subject of this triple.

predicate: NamedNode

The predicate of this triple.

object: Term

The object of this triple.

graph_name: GraphName

The name of the RDF graph in which the triple is.

Implementations

impl Quad

pub fn new( subject: impl Into<Subject>, predicate: impl Into<NamedNode>, object: impl Into<Term>, graph_name: impl Into<GraphName>, ) -> Quad

Builds an RDF triple in an RDF dataset.

pub fn as_ref(&self) -> QuadRef<'_>

Trait Implementations

impl Clone for Quad

fn clone(&self) -> Quad

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Quad

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

Formats the value using the given formatter.

impl Display for Quad

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

Formats the value using the given formatter.

impl<'a> From<&'a Quad> for QuadRef<'a>

fn from(quad: &'a Quad) -> QuadRef<'a>

Converts to this type from the input type.

impl From<Quad> for Triple

fn from(quad: Quad) -> Triple

Converts to this type from the input type.

impl<'a> From<QuadRef<'a>> for Quad

fn from(quad: QuadRef<'a>) -> Quad

Converts to this type from the input type.

impl FromStr for Quad

fn from_str(s: &str) -> Result<Quad, <Quad as FromStr>::Err>

Parses a triple from its NQuads serialization

use oxrdf::{BlankNode, GraphName, Literal, NamedNode, Quad};
use std::str::FromStr;

assert_eq!(
    Quad::from_str("_:a <http://example.com/p> \"o\" .")?,
    Quad::new(
        BlankNode::new("a")?,
        NamedNode::new("http://example.com/p")?,
        Literal::new_simple_literal("o"),
        GraphName::DefaultGraph
    )
);
assert_eq!(
    Quad::from_str("_:a <http://example.com/p> \"o\" <http://example.com/g> .")?,
    Quad::new(
        BlankNode::new("a")?,
        NamedNode::new("http://example.com/p")?,
        Literal::new_simple_literal("o"),
        NamedNode::new("http://example.com/g")?
    )
);

type Err = TermParseError

The associated error which can be returned from parsing.

impl Hash for Quad

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 for Quad

fn eq(&self, other: &Quad) -> 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 Eq for Quad

impl StructuralPartialEq for Quad