Struct QuantileConstraint 

pub struct QuantileConstraint { /* private fields */ }

A unified constraint that validates quantiles and distribution properties.

This constraint replaces individual quantile constraints and provides a consistent interface for all quantile-based validations.

Examples

use term_guard::constraints::{QuantileConstraint, QuantileMethod, Assertion};
use term_guard::core::Constraint;

// Check median (50th percentile)
let median_check = QuantileConstraint::median(
    "response_time",
    Assertion::LessThan(500.0)
);

// Check 95th percentile for SLA
let p95_check = QuantileConstraint::percentile(
    "response_time",
    0.95,
    Assertion::LessThan(1000.0)
);

// Check specific quantiles using percentile method
let q25_check = QuantileConstraint::percentile(
    "score",
    0.25,
    Assertion::GreaterThan(60.0)
);

Implementations

impl QuantileConstraint

pub fn new( column: impl Into<String>, validation: QuantileValidation, ) -> Result<Self>

Creates a new unified quantile constraint.

Arguments

• column - The column to validate
• validation - The type of validation to perform

Errors

Returns an error if the column name is invalid.

pub fn with_method( column: impl Into<String>, validation: QuantileValidation, method: QuantileMethod, ) -> Result<Self>

Creates a new unified quantile constraint with a specific method.

pub fn median(column: impl Into<String>, assertion: Assertion) -> Result<Self>

Convenience constructor for median check.

pub fn percentile( column: impl Into<String>, quantile: f64, assertion: Assertion, ) -> Result<Self>

Convenience constructor for percentile check.

pub fn multiple( column: impl Into<String>, checks: Vec<QuantileCheck>, ) -> Result<Self>

Convenience constructor for multiple quantile checks.

pub fn distribution( column: impl Into<String>, config: DistributionConfig, ) -> Result<Self>

Convenience constructor for distribution analysis.

Trait Implementations

impl Clone for QuantileConstraint

fn clone(&self) -> QuantileConstraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Constraint for QuantileConstraint

fn evaluate<'life0, 'life1, 'async_trait>( &'life0 self, ctx: &'life1 SessionContext, ) -> Pin<Box<dyn Future<Output = Result<ConstraintResult>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Evaluates the constraint against the data in the session context.

fn name(&self) -> &str

Returns the name of the constraint.

fn metadata(&self) -> ConstraintMetadata

Returns the metadata associated with this constraint.

fn column(&self) -> Option<&str>

Returns the column this constraint operates on (if single-column).

fn description(&self) -> Option<&str>

Returns a description of what this constraint validates.

impl Debug for QuantileConstraint

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

Formats the value using the given formatter.