Struct FilterExpr 

pub struct FilterExpr { /* private fields */ }

The filter expression.

Implementations

impl FilterExpr

pub fn parse(expr: &str) -> Result<Self, Error>

Parse the filter expression.

use filter_expr::FilterExpr;

let filter_expr = FilterExpr::parse("name = 'John' AND age > 18").unwrap();

pub fn is_empty(&self) -> bool

Check if the filter expression is empty.

pub fn new(expr: Option<Expr>) -> Self

Create a new filter expression with the given expression.

pub fn expr(&self) -> Option<&Expr>

Get the expression of the filter.

pub async fn transform<F: Transform>( self, transformer: &mut F, ) -> Result<Self, Error>

Transform the filter expression.

Trait Implementations

impl Clone for FilterExpr

fn clone(&self) -> FilterExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FilterExpr

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

Formats the value using the given formatter.

impl PartialEq for FilterExpr

fn eq(&self, other: &FilterExpr) -> 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 StructuralPartialEq for FilterExpr