Struct UnaryExpression

pub struct UnaryExpression<T> { /* private fields */ }

Unary predicate, for example, a IS NULL.

Implementations

impl<T> UnaryExpression<T>

pub fn new(op: PredicateOperator, term: T) -> Self

Creates a unary expression with the given operator and term.

Example

use iceberg::expr::{PredicateOperator, Reference, UnaryExpression};

UnaryExpression::new(PredicateOperator::IsNull, Reference::new("c"));

pub fn op(&self) -> PredicateOperator

Return the operator of this predicate.

pub fn term(&self) -> &T

Return the term of this predicate.

Trait Implementations

impl<T: Bind> Bind for UnaryExpression<T>

type Bound = UnaryExpression<<T as Bind>::Bound>

The type of the bound result.

fn bind(&self, schema: SchemaRef, case_sensitive: bool) -> Result<Self::Bound>

Bind an expression to a schema.

impl<T: Clone> Clone for UnaryExpression<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for UnaryExpression<T>

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

Formats the value using the given formatter.

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

where T: Deserialize<'de>,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T: Display> Display for UnaryExpression<T>

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

Formats the value using the given formatter.

impl<T: PartialEq> PartialEq for UnaryExpression<T>

fn eq(&self, other: &UnaryExpression<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> Serialize for UnaryExpression<T>

where T: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T> StructuralPartialEq for UnaryExpression<T>