Struct QuadPattern 

pub struct QuadPattern<T: Term> { /* private fields */ }

A quad statement pattern.

Implementations

impl<T: Term> QuadPattern<T>

pub const EMPTY: QuadPattern<T>

pub const fn empty() -> Self

pub const fn new(s: Option<T>, p: Option<T>, o: Option<T>, g: Option<T>) -> Self

pub const fn with_subject(s: T) -> Self

pub const fn with_predicate(p: T) -> Self

pub const fn with_object(o: T) -> Self

pub const fn with_context(g: T) -> Self

pub fn is_empty(&self) -> bool

pub fn is_constant(&self) -> bool

pub fn is_variable(&self) -> bool

pub fn into_inner(self) -> (Option<T>, Option<T>, Option<T>, Option<T>)

impl<T: Term + Clone> QuadPattern<T>

pub fn to_triple_pattern(&self) -> TriplePattern<T>

Trait Implementations

impl Borrow<QuadPattern<CowTerm<'static>>> for AnyStatement

fn borrow(&self) -> &QuadPattern<CowTerm<'static>>

Immutably borrows from an owned value.

impl Borrow<QuadPattern<HeapTerm>> for AnyStatement

fn borrow(&self) -> &QuadPattern<HeapTerm>

Immutably borrows from an owned value.

impl<T: Clone + Term> Clone for QuadPattern<T>

fn clone(&self) -> QuadPattern<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug + Term> Debug for QuadPattern<T>

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

Formats the value using the given formatter.

impl<T: Term> Default for QuadPattern<T>

fn default() -> Self

Returns the “default value” for a type.

impl<'de, T> Deserialize<'de> for QuadPattern<T>

where T: Deserialize<'de> + Term,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T: Eq + Term> Eq for QuadPattern<T>

impl<T: Term + Clone> From<(&T, &T, &T)> for QuadPattern<T>

fn from((s, p, o): (&T, &T, &T)) -> Self

Converts to this type from the input type.

impl<T: Term + Clone> From<(&T, &T, &T, &T)> for QuadPattern<T>

fn from((s, p, o, g): (&T, &T, &T, &T)) -> Self

Converts to this type from the input type.

impl<T: Term> From<()> for QuadPattern<T>

fn from(_: ()) -> Self

Converts to this type from the input type.

impl<T: Term + Clone> From<(Option<&T>, Option<&T>, Option<&T>)> for QuadPattern<T>

fn from((s, p, o): (Option<&T>, Option<&T>, Option<&T>)) -> Self

Converts to this type from the input type.

impl<T: Term + Clone> From<(Option<&T>, Option<&T>, Option<&T>, Option<&T>)> for QuadPattern<T>

fn from((s, p, o, g): (Option<&T>, Option<&T>, Option<&T>, Option<&T>)) -> Self

Converts to this type from the input type.

impl<T: Term> From<(Option<T>, Option<T>, Option<T>)> for QuadPattern<T>

fn from((s, p, o): (Option<T>, Option<T>, Option<T>)) -> Self

Converts to this type from the input type.

impl<T: Term> From<(Option<T>, Option<T>, Option<T>, Option<T>)> for QuadPattern<T>

fn from((s, p, o, g): (Option<T>, Option<T>, Option<T>, Option<T>)) -> Self

Converts to this type from the input type.

impl<T: Term> From<(T, T, T)> for QuadPattern<T>

fn from((s, p, o): (T, T, T)) -> Self

Converts to this type from the input type.

impl<T: Term> From<(T, T, T, T)> for QuadPattern<T>

fn from((s, p, o, g): (T, T, T, T)) -> Self

Converts to this type from the input type.

impl<T: Term> From<Option<()>> for QuadPattern<T>

fn from(_: Option<()>) -> Self

Converts to this type from the input type.

impl<T: Term> FromIterator<T> for QuadPattern<T>

fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self

Creates a value from an iterator.

impl<T: Hash + Term> Hash for QuadPattern<T>

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: Ord + Term> Ord for QuadPattern<T>

fn cmp(&self, other: &QuadPattern<T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: PartialEq + Term> PartialEq for QuadPattern<T>

fn eq(&self, other: &QuadPattern<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl<T: PartialOrd + Term> PartialOrd for QuadPattern<T>

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

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl<T> Serialize for QuadPattern<T>

where T: Serialize + Term,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T: Term + Clone> StatementPattern for QuadPattern<T>

type Term = T

fn subject(&self) -> Option<&Self::Term>

fn predicate(&self) -> Option<&Self::Term>

fn object(&self) -> Option<&Self::Term>

fn context(&self) -> Option<&Self::Term>

fn matches( &self, subject: impl Term, predicate: impl Term, object: impl Term, context: Option<impl Term>, ) -> bool

fn has_subject(&self) -> bool

Whether the pattern has a constant subject.

fn has_predicate(&self) -> bool

Whether the pattern has a constant predicate.

fn has_object(&self) -> bool

Whether the pattern has a constant object.

fn has_context(&self) -> bool

Whether the pattern has a constant context (graph).

fn to_triple_pattern(&self) -> TriplePattern<Self::Term>

fn to_quad_pattern(&self) -> QuadPattern<Self::Term>

impl<T: PartialEq + Term> StructuralPartialEq for QuadPattern<T>

impl TryFrom<QuadPattern<CowTerm<'_>>> for AnyStatement

Available on crate feature alloc only.

type Error = ()

The type returned in the event of a conversion error.

fn try_from(input: CowQuadPattern<'_>) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<QuadPattern<HeapTerm>> for AnyStatement

Available on crate feature alloc only.

type Error = ()

The type returned in the event of a conversion error.

fn try_from(input: HeapQuadPattern) -> Result<Self, Self::Error>

Performs the conversion.

impl<T: Term> TryFrom<QuadPattern<T>> for Quad<T>

type Error = ()

The type returned in the event of a conversion error.

fn try_from(input: QuadPattern<T>) -> Result<Self, Self::Error>

Performs the conversion.

impl<T: Term> TryFrom<QuadPattern<T>> for Triple<T>

type Error = ()

The type returned in the event of a conversion error.

fn try_from(input: QuadPattern<T>) -> Result<Self, Self::Error>

Performs the conversion.