Enum IndexExpression 

pub enum IndexExpression {
    Lower(&'static str),
    Upper(&'static str),
    Trim(&'static str),
    LowerTrim(&'static str),
    Date(&'static str),
    Year(&'static str),
    Month(&'static str),
    Day(&'static str),
}

IndexExpression

Canonical deterministic expression key metadata for expression indexes. This enum is semantic authority across schema/runtime/planner boundaries.

Variants

Lower(&'static str)

Upper(&'static str)

Trim(&'static str)

LowerTrim(&'static str)

Date(&'static str)

Year(&'static str)

Month(&'static str)

Day(&'static str)

Implementations

impl IndexExpression

pub const fn field(&self) -> &'static str

Borrow the referenced field for this expression key item.

pub const fn kind_tag(&self) -> u8

Return one stable discriminant for fingerprint hashing.

Trait Implementations

impl Clone for IndexExpression

fn clone(&self) -> IndexExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexExpression

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

Formats the value using the given formatter.

impl Display for IndexExpression

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

Formats the value using the given formatter.

impl PartialEq for IndexExpression

fn eq(&self, other: &IndexExpression) -> 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 Copy for IndexExpression

impl Eq for IndexExpression

impl StructuralPartialEq for IndexExpression