oxigraph::model

Struct Variable

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pub struct Variable { /* private fields */ }
Expand description

A SPARQL query owned variable.

The default string formatter is returning a SPARQL compatible representation:

use oxrdf::{Variable, VariableNameParseError};

assert_eq!("?foo", Variable::new("foo")?.to_string());

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impl Variable

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pub fn new(name: impl Into<String>) -> Result<Variable, VariableNameParseError>

Creates a variable name from a unique identifier.

The variable identifier must be valid according to the SPARQL grammar.

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pub fn new_unchecked(name: impl Into<String>) -> Variable

Creates a variable name from a unique identifier without validation.

It is the caller’s responsibility to ensure that id is a valid blank node identifier according to the SPARQL grammar.

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

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pub fn as_str(&self) -> &str

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pub fn into_string(self) -> String

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

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impl Clone for Variable

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fn clone(&self) -> Variable

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 Variable

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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 Variable

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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 Variable> for VariableRef<'a>

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fn from(variable: &'a Variable) -> VariableRef<'a>

Converts to this type from the input type.
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impl<'a> From<VariableRef<'a>> for Variable

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fn from(variable: VariableRef<'a>) -> Variable

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

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

Parses a variable from its SPARQL serialization

use oxrdf::Variable;
use std::str::FromStr;

assert_eq!(Variable::from_str("$foo")?, Variable::new("foo")?);
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type Err = TermParseError

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

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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 Index<&Variable> for QuerySolution

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type Output = Term

The returned type after indexing.
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fn index( &self, index: &Variable, ) -> &<QuerySolution as Index<&Variable>>::Output

Performs the indexing (container[index]) operation. Read more
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impl Index<Variable> for QuerySolution

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type Output = Term

The returned type after indexing.
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fn index(&self, index: Variable) -> &<QuerySolution as Index<Variable>>::Output

Performs the indexing (container[index]) operation. Read more
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impl Ord for Variable

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fn cmp(&self, other: &Variable) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq<Variable> for VariableRef<'_>

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fn eq(&self, other: &Variable) -> 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<VariableRef<'_>> for Variable

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fn eq(&self, other: &VariableRef<'_>) -> 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 Variable

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fn eq(&self, other: &Variable) -> 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 PartialOrd<Variable> for VariableRef<'_>

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fn partial_cmp(&self, other: &Variable) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl PartialOrd<VariableRef<'_>> for Variable

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fn partial_cmp(&self, other: &VariableRef<'_>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl PartialOrd for Variable

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fn partial_cmp(&self, other: &Variable) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · Source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · Source§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl VariableSolutionIndex for &Variable

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fn index(self, solution: &QuerySolution) -> Option<usize>

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impl VariableSolutionIndex for Variable

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fn index(self, solution: &QuerySolution) -> Option<usize>

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impl Eq for Variable

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impl StructuralPartialEq for Variable

Auto Trait Implementations§

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