oxigraph::model

Struct Quad

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

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§

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impl Quad

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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.

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

Trait Implementations§

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impl Clone for Quad

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fn clone(&self) -> Quad

Returns a copy of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Quad

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

Formats the value using the given formatter. Read more
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impl Display for Quad

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

Formats the value using the given formatter. Read more
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impl Extend<Quad> for Dataset

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fn extend<I>(&mut self, iter: I)
where I: IntoIterator<Item = Quad>,

Extends a collection with the contents of an iterator. Read more
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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
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impl<'a> From<&'a Quad> for QuadRef<'a>

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

Converts to this type from the input type.
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impl From<Quad> for Triple

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fn from(quad: Quad) -> Triple

Converts to this type from the input type.
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impl<'a> From<QuadRef<'a>> for Quad

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

Converts to this type from the input type.
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impl FromIterator<Quad> for Dataset

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fn from_iter<I>(iter: I) -> Dataset
where I: IntoIterator<Item = Quad>,

Creates a value from an iterator. Read more
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impl FromStr for Quad

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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")?
    )
);
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type Err = TermParseError

The associated error which can be returned from parsing.
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impl Hash for Quad

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for Quad

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

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

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impl StructuralPartialEq for Quad

Auto Trait Implementations§

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impl Freeze for Quad

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impl RefUnwindSafe for Quad

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impl Send for Quad

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impl Sync for Quad

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impl Unpin for Quad

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impl UnwindSafe for Quad

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V