Struct Predicate 

pub struct Predicate {
    pub column: String,
    pub op: FilterOp,
    pub value: PredicateValue,
}

A single predicate condition

Fields

column: String

Column name

op: FilterOp

Filter operation

value: PredicateValue

Value(s) to compare against

Implementations

impl Predicate

pub fn eq(column: impl Into<String>, value: Value) -> Self

Create an equality predicate

pub fn ne(column: impl Into<String>, value: Value) -> Self

Create a not-equal predicate

pub fn lt(column: impl Into<String>, value: Value) -> Self

Create a less-than predicate

pub fn le(column: impl Into<String>, value: Value) -> Self

Create a less-than-or-equal predicate

pub fn gt(column: impl Into<String>, value: Value) -> Self

Create a greater-than predicate

pub fn ge(column: impl Into<String>, value: Value) -> Self

Create a greater-than-or-equal predicate

pub fn between(column: impl Into<String>, low: Value, high: Value) -> Self

Create a between predicate (inclusive)

pub fn in_list(column: impl Into<String>, values: Vec<Value>) -> Self

Create an IN predicate

pub fn not_in(column: impl Into<String>, values: Vec<Value>) -> Self

Create a NOT IN predicate

pub fn like(column: impl Into<String>, pattern: impl Into<String>) -> Self

Create a LIKE predicate

pub fn not_like(column: impl Into<String>, pattern: impl Into<String>) -> Self

Create a NOT LIKE predicate

pub fn is_null(column: impl Into<String>) -> Self

Create an IS NULL predicate

pub fn is_not_null(column: impl Into<String>) -> Self

Create an IS NOT NULL predicate

pub fn contains(column: impl Into<String>, value: Value) -> Self

Create a CONTAINS predicate

pub fn starts_with(column: impl Into<String>, prefix: impl Into<String>) -> Self

Create a STARTS WITH predicate

pub fn ends_with(column: impl Into<String>, suffix: impl Into<String>) -> Self

Create an ENDS WITH predicate

pub fn evaluate(&self, column_value: &Value) -> bool

Evaluate predicate against a value

Trait Implementations

impl Clone for Predicate

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Predicate

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

Formats the value using the given formatter.