Struct elasticsearch_dsl::search::queries::joining::HasChildQuery

pub struct HasChildQuery { /* private fields */ }

Returns parent documents whose joined child documents match a provided query. You can create parent-child relationships between documents in the same index using a join field mapping.

To create has_child query:

Query::has_child("child", Query::term("tag", "elasticsearch"));

https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-HasChild-query.html

Implementations

impl HasChildQuery

pub fn ignore_unmapped(self, ignore_unmapped: bool) -> Self

Indicates whether to ignore an unmapped type and not return any documents instead of an error. Defaults to false.

If false, Elasticsearch returns an error if the type is unmapped.

You can use this parameter to query multiple indices that may not contain the type.

pub fn max_children(self, max_children: u32) -> Self

Maximum number of child documents that match the query allowed for a returned parent document. If the parent document exceeds this limit, it is excluded from the search results.

pub fn min_children(self, min_children: u32) -> Self

Minimum number of child documents that match the query required to match the query for a returned parent document. If the parent document does not meet this limit, it is excluded from the search results.

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

Indicates how scores for matching child documents affect the root parent document’s relevance score.

pub fn boost<T>(self, boost: T) -> Selfwhere
    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) -> Selfwhere
    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/elasticsearch/reference/current/query-dsl-bool-query.html#named-queries

Trait Implementations

impl Clone for HasChildQuery

fn clone(&self) -> HasChildQuery

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for HasChildQuery

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

Formats the value using the given formatter.

impl From<HasChildQuery> for Option<Query>

fn from(q: HasChildQuery) -> Self

Converts to this type from the input type.

impl From<HasChildQuery> for Query

fn from(q: HasChildQuery) -> Self

Converts to this type from the input type.

impl IntoIterator for HasChildQuery

type Item = HasChildQuery

The type of the elements being iterated over.

type IntoIter = IntoIter<<HasChildQuery 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<HasChildQuery> for HasChildQuery

fn eq(&self, other: &HasChildQuery) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialEq<HasChildQuery> for Query

fn eq(&self, other: &HasChildQuery) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialEq<Query> for HasChildQuery

fn eq(&self, other: &Query) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for HasChildQuery

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

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for HasChildQuery