Enum MatchTier 

pub enum MatchTier {
    Typo,
    Spanning,
    Contains,
    WordPrefix,
    Word,
    Prefix,
    PrefixWord,
    Exact,
}

How strongly a query matched one field; later variants are stronger.

A word is a run of letters or of digits: report2026-final has the words report, 2026 and final.

Variants

Typo

Every word of the query matches a title word within a small edit distance (Matching::typos).

Spanning

Every word of the query occurs in some field, though no field holds the whole query (Matching::spanning).

Contains

The query occurs inside the field, not at a word start.

WordPrefix

Some later word of the field starts with the query.

Word

The query is some later whole word (or words) of the field.

Prefix

The field starts with the query.

PrefixWord

The field starts with the query, which ends at a word end.

Exact

The field is the query.

Implementations

impl MatchTier

pub const fn percent(self) -> i32

The tier’s share of a full-weight field, in percent.

pub fn rank_in(self, weight: FieldWeight) -> Option<i32>

The default rank of this tier in a field of weight. Unranked fields only match by substring, at rank 0; the loose tiers rank the same in every field.

Trait Implementations

impl Clone for MatchTier

fn clone(&self) -> MatchTier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MatchTier

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

Formats the value using the given formatter.

impl Hash for MatchTier

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for MatchTier

fn cmp(&self, other: &MatchTier) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MatchTier

fn eq(&self, other: &MatchTier) -> 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 PartialOrd for MatchTier

fn partial_cmp(&self, other: &MatchTier) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for MatchTier

impl Eq for MatchTier

impl StructuralPartialEq for MatchTier