Enum UniquenessType 

pub enum UniquenessType {
    FullUniqueness {
        threshold: f64,
    },
    Distinctness(Assertion),
    UniqueValueRatio(Assertion),
    PrimaryKey,
    UniqueWithNulls {
        threshold: f64,
        null_handling: NullHandling,
    },
    UniqueComposite {
        threshold: f64,
        null_handling: NullHandling,
        case_sensitive: bool,
    },
}

Type of uniqueness validation to perform.

This enum encompasses all the different types of uniqueness checks that were previously handled by separate constraint types.

Variants

FullUniqueness

Full uniqueness validation with configurable threshold.

Replaces the functionality of UniquenessConstraint. Validates that at least threshold ratio of values are unique.

Fields

threshold: f64

Distinctness(Assertion)

Distinctness validation using flexible assertions.

Replaces the functionality of DistinctnessConstraint. Validates the ratio of distinct values using assertion-based logic.

UniqueValueRatio(Assertion)

Unique value ratio validation using flexible assertions.

Replaces the functionality of UniqueValueRatioConstraint. Validates the ratio of values that appear exactly once.

PrimaryKey

Primary key validation (unique + non-null).

Replaces the functionality of PrimaryKeyConstraint. Enforces that values are both unique and contain no NULLs.

UniqueWithNulls

Uniqueness validation that allows NULL values.

Similar to FullUniqueness but with explicit NULL handling control.

Fields

threshold: f64

null_handling: NullHandling

UniqueComposite

Composite uniqueness with advanced null handling.

Optimized for multi-column uniqueness checks with configurable null handling strategies.

Fields

threshold: f64

null_handling: NullHandling

case_sensitive: bool

Implementations

impl UniquenessType

pub fn name(&self) -> &str

Returns the name of this uniqueness type for tracing and metadata.

pub fn description(&self) -> String

Returns a human-readable description of this uniqueness type.

Trait Implementations

impl Clone for UniquenessType

fn clone(&self) -> UniquenessType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UniquenessType

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

Formats the value using the given formatter.

impl PartialEq for UniquenessType

fn eq(&self, other: &UniquenessType) -> 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 UniquenessType