Enum Expr 

pub enum Expr {
    And(Box<Expr>, Box<Expr>),
    Or(Box<Expr>, Box<Expr>),
    Not(Box<Expr>),
    Compare(Box<Expr>, CompareOperator, Box<Expr>),
    In(Box<Expr>, Vec<Expr>),
    Function(String, Vec<Expr>),
    Identifier(String),
    Value(Value),
}

Variants

And(Box<Expr>, Box<Expr>)

Or(Box<Expr>, Box<Expr>)

Not(Box<Expr>)

Compare(Box<Expr>, CompareOperator, Box<Expr>)

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

Function(String, Vec<Expr>)

Identifier(String)

Value(Value)

Implementations

impl Expr

pub fn and(self, other: Expr) -> Expr

Combine two expressions with AND: expr1 and expr2

Example

let filter = ID.eq(user_id).and(NAME.contains("john"));

pub fn or(self, other: Expr) -> Expr

Combine two expressions with OR: expr1 or expr2

pub fn not(self) -> Expr

Negate an expression: not expr

Trait Implementations

impl Clone for Expr

fn clone(&self) -> Expr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expr

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

Formats the value using the given formatter.

impl Not for Expr

type Output = Expr

The resulting type after applying the ! operator.

fn not(self) -> Self::Output

Performs the unary ! operation.