Struct FunctionScoreQuery 

pub struct FunctionScoreQuery { /* private fields */ }

The function_score allows you to modify the score of documents that are retrieved by a query.

This can be useful if, for example, a score function is computationally expensive and it is sufficient to compute the score on a filtered set of documents.

To use function_score, the user has to define a query and one or more functions, that compute a new score for each document returned by the query.

To create function_score query:

Query::function_score()
  .query(Query::term("test", 1))
  .function(
    RandomScore::new()
      .filter(Query::term("test", 1))
      .weight(2.0),
  )
  .function(Weight::new(2.0))
  .max_boost(2.2)
  .min_score(2.3)
  .score_mode(FunctionScoreMode::Avg)
  .boost_mode(FunctionBoostMode::Max)
  .boost(1.1)
  .name("test");

https://www.elastic.co/guide/en/opensearch/reference/current/query-dsl-function-score-query.html

Implementations

impl<'de> FunctionScoreQuery

pub fn deserialize<__D>( __deserializer: __D, ) -> Result<FunctionScoreQuery, __D::Error>

where __D: Deserializer<'de>,

impl FunctionScoreQuery

pub fn serialize<__S>( __self: &FunctionScoreQuery, __serializer: __S, ) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

impl FunctionScoreQuery

pub fn boost<T>(self, boost: T) -> Self

where T: AsPrimitive<f32>,

Floating point number used to decrease or increase the relevance scores of a query. Defaults to 1.0.

You can use the boost parameter to adjust relevance scores for searches containing two or more queries.

Boost values are relative to the default value of 1.0. A boost value between 0 and 1.0 decreases the relevance score. A value greater than 1.0 increases the relevance score.

pub fn name<S>(self, name: S) -> Self

where S: ToString,

You can use named queries to track which queries matched returned documents. If named queries are used, the response includes a matched_queries property for each hit.

https://www.elastic.co/guide/en/opensearch/reference/current/query-dsl-bool-query.html#named-queries

pub fn query<T>(self, query: T) -> Self

where T: Into<Option<Query>>,

Base function score query

pub fn function<T>(self, function: T) -> Self

where T: Into<Option<Function>>,

Push function to the list

pub fn max_boost<T>(self, max_boost: T) -> Self

where T: AsPrimitive<f32>,

Maximum score value after applying all the functions

pub fn min_score<T>(self, min_score: T) -> Self

where T: Into<f32>,

By default, modifying the score does not change which documents match. To exclude documents that do not meet a certain score threshold the min_score parameter can be set to the desired score threshold.

pub fn score_mode(self, score_mode: FunctionScoreMode) -> Self

Each document is scored by the defined functions. The parameter score_mode specifies how the computed scores are combined

pub fn boost_mode(self, boost_mode: FunctionBoostMode) -> Self

The newly computed score is combined with the score of the query. The parameter boost_mode defines how.

Trait Implementations

impl Clone for FunctionScoreQuery

fn clone(&self) -> FunctionScoreQuery

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FunctionScoreQuery

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FunctionScoreQuery

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<FunctionScoreQuery> for Query

fn from(q: FunctionScoreQuery) -> Self

Converts to this type from the input type.

impl From<FunctionScoreQuery> for Option<Query>

fn from(q: FunctionScoreQuery) -> Self

Converts to this type from the input type.

impl IntoIterator for FunctionScoreQuery

type Item = FunctionScoreQuery

The type of the elements being iterated over.

type IntoIter = IntoIter<<FunctionScoreQuery as IntoIterator>::Item>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl PartialEq for FunctionScoreQuery

fn eq(&self, other: &FunctionScoreQuery) -> 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 PartialEq<FunctionScoreQuery> for Query

fn eq(&self, other: &FunctionScoreQuery) -> 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 PartialEq<Query> for FunctionScoreQuery

fn eq(&self, other: &Query) -> 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 Serialize for FunctionScoreQuery

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl ShouldSkip for FunctionScoreQuery

fn should_skip(&self) -> bool

Whether a query or a query value can be skipped

fn should_keep(&self) -> bool

Inverse of the condition

impl StructuralPartialEq for FunctionScoreQuery