Struct GraphViewMut

pub struct GraphViewMut<'a> { /* private fields */ }

A read/write view on an RDF graph contained in a Dataset.

It is built using the Dataset::graph_mut method.

Usage example:

use oxrdf::*;

let mut dataset = Dataset::default();
let ex = NamedNodeRef::new("http://example.com")?;

// We edit and query the dataset http://example.com graph
{
    let mut graph = dataset.graph_mut(ex);
    graph.insert(TripleRef::new(ex, ex, ex));
    let results: Vec<_> = graph.iter().collect();
    assert_eq!(vec![TripleRef::new(ex, ex, ex)], results);
}

// We have also changes the dataset itself
let results: Vec<_> = dataset.iter().collect();
assert_eq!(vec![QuadRef::new(ex, ex, ex, ex)], results);

Implementations

impl<'a> GraphViewMut<'a>

pub fn insert<'b>(&mut self, triple: impl Into<TripleRef<'b>>) -> bool

Adds a triple to the graph.

pub fn remove<'b>(&mut self, triple: impl Into<TripleRef<'b>>) -> bool

Removes a concrete triple from the graph.

pub fn iter(&'a self) -> GraphViewIter<'a>

Returns all the triples contained by the graph

pub fn triples_for_subject<'b>( &'a self, subject: impl Into<SubjectRef<'b>>, ) -> impl Iterator<Item = TripleRef<'a>> + 'a

pub fn objects_for_subject_predicate<'b>( &'a self, subject: impl Into<SubjectRef<'b>>, predicate: impl Into<NamedNodeRef<'b>>, ) -> impl Iterator<Item = TermRef<'a>> + 'a

pub fn object_for_subject_predicate<'b>( &'a self, subject: impl Into<SubjectRef<'b>>, predicate: impl Into<NamedNodeRef<'b>>, ) -> Option<TermRef<'a>>

pub fn predicates_for_subject_object<'b>( &'a self, subject: impl Into<SubjectRef<'b>>, object: impl Into<TermRef<'b>>, ) -> impl Iterator<Item = NamedNodeRef<'a>> + 'a

pub fn triples_for_predicate<'b>( &'a self, predicate: impl Into<NamedNodeRef<'b>>, ) -> impl Iterator<Item = TripleRef<'a>> + 'a

pub fn subjects_for_predicate_object<'b>( &'a self, predicate: impl Into<NamedNodeRef<'b>>, object: impl Into<TermRef<'b>>, ) -> impl Iterator<Item = SubjectRef<'a>> + 'a

pub fn subject_for_predicate_object<'b>( &'a self, predicate: impl Into<NamedNodeRef<'b>>, object: impl Into<TermRef<'b>>, ) -> Option<SubjectRef<'a>>

pub fn triples_for_object<'b>( &'a self, object: TermRef<'b>, ) -> impl Iterator<Item = TripleRef<'a>> + 'a

pub fn contains<'b>(&self, triple: impl Into<TripleRef<'b>>) -> bool

Checks if the graph contains the given triple.

pub fn len(&self) -> usize

Returns the number of triples in this graph.

pub fn is_empty(&self) -> bool

Checks if this graph contains a triple.

Trait Implementations

impl<'a> Debug for GraphViewMut<'a>

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

Formats the value using the given formatter.

impl Display for GraphViewMut<'_>

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

Formats the value using the given formatter.

impl<'b, T> Extend<T> for GraphViewMut<'_>

where T: Into<TripleRef<'b>>,

fn extend<I>(&mut self, iter: I)

where I: IntoIterator<Item = T>,

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

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.

impl Extend<Triple> for GraphViewMut<'_>

fn extend<I>(&mut self, iter: I)

where I: IntoIterator<Item = Triple>,

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

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.

impl<'a> IntoIterator for &'a GraphViewMut<'a>

type Item = TripleRef<'a>

The type of the elements being iterated over.

type IntoIter = GraphViewIter<'a>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <&'a GraphViewMut<'a> as IntoIterator>::IntoIter

Creates an iterator from a value.