oxigraph::model

Struct BlankNodeRef

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pub struct BlankNodeRef<'a>(/* private fields */);
Expand description

A borrowed RDF blank node.

The common way to create a new blank node is to use the BlankNode::default trait method.

It is also possible to create a blank node from a blank node identifier using the BlankNodeRef::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::BlankNodeRef;

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

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impl<'a> BlankNodeRef<'a>

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pub fn new(id: &'a str) -> Result<BlankNodeRef<'a>, 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: &'a str) -> BlankNodeRef<'a>

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.

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

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

Returns the underlying ID of this blank node.

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pub const fn unique_id(&self) -> Option<u128>

Returns the internal numerical ID of this blank node if it has been created using BlankNode::new_from_unique_id.

use oxrdf::BlankNode;

assert_eq!(
    BlankNode::new_from_unique_id(128).as_ref().unique_id(),
    Some(128)
);
assert_eq!(BlankNode::new("foo")?.as_ref().unique_id(), None);
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pub fn into_owned(self) -> BlankNode

Trait Implementations§

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impl<'a> Clone for BlankNodeRef<'a>

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

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<'a> Debug for BlankNodeRef<'a>

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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 BlankNodeRef<'_>

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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 From<BlankNodeRef<'_>> for GraphName

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fn from(node: BlankNodeRef<'_>) -> GraphName

Converts to this type from the input type.
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impl From<BlankNodeRef<'_>> for NamedOrBlankNode

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fn from(node: BlankNodeRef<'_>) -> NamedOrBlankNode

Converts to this type from the input type.
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impl From<BlankNodeRef<'_>> for Subject

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fn from(node: BlankNodeRef<'_>) -> Subject

Converts to this type from the input type.
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impl From<BlankNodeRef<'_>> for Term

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fn from(node: BlankNodeRef<'_>) -> 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<'a> From<BlankNodeRef<'a>> for GraphNameRef<'a>

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

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

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

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

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

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

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

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

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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 ==.
1.0.0 · Source§

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<'a> PartialEq for BlankNodeRef<'a>

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

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<'a> Copy for BlankNodeRef<'a>

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impl<'a> Eq for BlankNodeRef<'a>

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impl<'a> StructuralPartialEq for BlankNodeRef<'a>

Auto Trait Implementations§

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impl<'a> Freeze for BlankNodeRef<'a>

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impl<'a> RefUnwindSafe for BlankNodeRef<'a>

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impl<'a> Send for BlankNodeRef<'a>

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impl<'a> Sync for BlankNodeRef<'a>

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impl<'a> Unpin for BlankNodeRef<'a>

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impl<'a> UnwindSafe for BlankNodeRef<'a>

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