oxigraph::model

Struct BlankNode

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pub struct BlankNode(/* private fields */);
Expand description

An owned RDF blank node.

The common way to create a new blank node is to use the BlankNode::default() function.

It is also possible to create a blank node from a blank node identifier using the BlankNode::new() function. The blank node identifier must be valid according to N-Triples, Turtle, and SPARQL grammars.

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

use oxrdf::BlankNode;

assert_eq!("_:a122", BlankNode::new("a122")?.to_string());

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impl BlankNode

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pub fn new(id: impl Into<String>) -> Result<BlankNode, BlankNodeIdParseError>

Creates a blank node from a unique identifier.

The blank node identifier must be valid according to N-Triples, Turtle, and SPARQL grammars.

In most cases, it is much more convenient to create a blank node using BlankNode::default() that creates a random ID that could be easily inlined by Oxigraph stores.

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pub fn new_unchecked(id: impl Into<String>) -> BlankNode

Creates a blank node from a unique identifier without validation.

It is the caller’s responsibility to ensure that id is a valid blank node identifier according to N-Triples, Turtle, and SPARQL grammars.

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

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pub fn new_from_unique_id(id: u128) -> BlankNode

Creates a blank node from a unique numerical id.

In most cases, it is much more convenient to create a blank node using BlankNode::default().

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pub fn as_str(&self) -> &str

Returns the underlying ID of this blank node.

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pub fn into_string(self) -> String

Returns the underlying ID of this blank node.

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

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impl Clone for BlankNode

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fn clone(&self) -> BlankNode

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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 Default for BlankNode

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fn default() -> BlankNode

Builds a new RDF blank node with a unique id.

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impl Display for BlankNode

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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<'a> From<&'a BlankNode> for BlankNodeRef<'a>

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fn from(node: &'a BlankNode) -> BlankNodeRef<'a>

Converts to this type from the input type.
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impl<'a> From<&'a BlankNode> for GraphNameRef<'a>

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fn from(node: &'a BlankNode) -> GraphNameRef<'a>

Converts to this type from the input type.
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impl<'a> From<&'a BlankNode> for NamedOrBlankNodeRef<'a>

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fn from(node: &'a BlankNode) -> NamedOrBlankNodeRef<'a>

Converts to this type from the input type.
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impl<'a> From<&'a BlankNode> for SubjectRef<'a>

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fn from(node: &'a BlankNode) -> SubjectRef<'a>

Converts to this type from the input type.
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impl<'a> From<&'a BlankNode> for TermRef<'a>

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fn from(node: &'a BlankNode) -> TermRef<'a>

Converts to this type from the input type.
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impl From<BlankNode> for GraphName

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fn from(node: BlankNode) -> GraphName

Converts to this type from the input type.
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impl From<BlankNode> for NamedOrBlankNode

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fn from(node: BlankNode) -> NamedOrBlankNode

Converts to this type from the input type.
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impl From<BlankNode> for Subject

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fn from(node: BlankNode) -> Subject

Converts to this type from the input type.
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impl From<BlankNode> for Term

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fn from(node: BlankNode) -> Term

Converts to this type from the input type.
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impl<'a> From<BlankNodeRef<'a>> for BlankNode

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fn from(node: BlankNodeRef<'a>) -> BlankNode

Converts to this type from the input type.
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impl FromStr for BlankNode

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

Parses a blank node from its NTriples serialization

use oxrdf::BlankNode;
use std::str::FromStr;

assert_eq!(BlankNode::from_str("_:ex")?, BlankNode::new("ex")?);
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type Err = TermParseError

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

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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<BlankNode> for BlankNodeRef<'_>

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fn eq(&self, other: &BlankNode) -> 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 PartialEq<BlankNodeRef<'_>> for BlankNode

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fn eq(&self, other: &BlankNodeRef<'_>) -> 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 PartialEq for BlankNode

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fn eq(&self, other: &BlankNode) -> 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 TryFrom<Term> for BlankNode

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type Error = TryFromTermError

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

Performs the conversion.
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impl Eq for BlankNode

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impl StructuralPartialEq for BlankNode

Auto Trait 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