Struct FieldExpr 

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

A typed reference to one field. T makes incompatible comparisons fail in Rust before a plan can be emitted; serde sees only the contained FieldRef.

Implementations

impl<T> FieldExpr<T>

pub fn new(binding: u32, field: impl Into<String>) -> Self

pub fn expr(&self) -> ScalarExpr

pub fn eq(&self, value: T) -> BoolExpr

where T: QueryLiteral,

pub fn ne(&self, value: T) -> BoolExpr

where T: QueryLiteral,

pub fn gt(&self, value: T) -> BoolExpr

where T: QueryLiteral,

pub fn gte(&self, value: T) -> BoolExpr

where T: QueryLiteral,

pub fn lt(&self, value: T) -> BoolExpr

where T: QueryLiteral,

pub fn lte(&self, value: T) -> BoolExpr

where T: QueryLiteral,

pub fn binding(&self) -> u32

The binding this field belongs to — what join builders anchor on until slice 3’s typed EdgeExpr replaces the string field name.

Trait Implementations

impl<T> Clone for FieldExpr<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for FieldExpr<T>

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

Formats the value using the given formatter.