Enum Expression

pub enum Expression {
    NamedNode(NamedNode),
    Literal(Literal),
    Variable(Variable),
    Or(Box<Self>, Box<Self>),
    And(Box<Self>, Box<Self>),
    Equal(Box<Self>, Box<Self>),
    SameTerm(Box<Self>, Box<Self>),
    Greater(Box<Self>, Box<Self>),
    GreaterOrEqual(Box<Self>, Box<Self>),
    Less(Box<Self>, Box<Self>),
    LessOrEqual(Box<Self>, Box<Self>),
    In(Box<Self>, Vec<Self>),
    Add(Box<Self>, Box<Self>),
    Subtract(Box<Self>, Box<Self>),
    Multiply(Box<Self>, Box<Self>),
    Divide(Box<Self>, Box<Self>),
    UnaryPlus(Box<Self>),
    UnaryMinus(Box<Self>),
    Not(Box<Self>),
    Exists(Box<GraphPattern>),
    Bound(Variable),
    If(Box<Self>, Box<Self>, Box<Self>),
    Coalesce(Vec<Self>),
    FunctionCall(Function, Vec<Self>),
}

An expression.

Variants

NamedNode(NamedNode)

Literal(Literal)

Variable(Variable)

Or(Box<Self>, Box<Self>)

Logical-or.

And(Box<Self>, Box<Self>)

Logical-and.

Equal(Box<Self>, Box<Self>)

RDFterm-equal and all the XSD equalities.

SameTerm(Box<Self>, Box<Self>)

sameTerm.

Greater(Box<Self>, Box<Self>)

op:numeric-greater-than and other XSD greater than operators.

GreaterOrEqual(Box<Self>, Box<Self>)

Less(Box<Self>, Box<Self>)

op:numeric-less-than and other XSD greater than operators.

LessOrEqual(Box<Self>, Box<Self>)

In(Box<Self>, Vec<Self>)

IN

Add(Box<Self>, Box<Self>)

op:numeric-add and other XSD additions.

Subtract(Box<Self>, Box<Self>)

op:numeric-subtract and other XSD subtractions.

Multiply(Box<Self>, Box<Self>)

op:numeric-multiply and other XSD multiplications.

Divide(Box<Self>, Box<Self>)

op:numeric-divide and other XSD divides.

UnaryPlus(Box<Self>)

op:numeric-unary-plus and other XSD unary plus.

UnaryMinus(Box<Self>)

op:numeric-unary-minus and other XSD unary minus.

Not(Box<Self>)

fn:not.

Exists(Box<GraphPattern>)

EXISTS.

Bound(Variable)

BOUND.

If(Box<Self>, Box<Self>, Box<Self>)

IF.

Coalesce(Vec<Self>)

COALESCE.

FunctionCall(Function, Vec<Self>)

A regular function call.

Trait Implementations

impl Clone for Expression

fn clone(&self) -> Expression

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Expression

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

Formats the value using the given formatter.

impl Display for Expression

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

Formats the value using the given formatter.

impl From<Literal> for Expression

fn from(p: Literal) -> Self

Converts to this type from the input type.

impl From<NamedNode> for Expression

fn from(p: NamedNode) -> Self

Converts to this type from the input type.

impl From<NamedNodePattern> for Expression

fn from(p: NamedNodePattern) -> Self

Converts to this type from the input type.

impl From<Variable> for Expression

fn from(v: Variable) -> Self

Converts to this type from the input type.

impl Hash for Expression

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 PartialEq for Expression

fn eq(&self, other: &Expression) -> 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 Eq for Expression

impl StructuralPartialEq for Expression