Struct CountAggregation 

pub struct CountAggregation {
    pub field: String,
    pub missing: Option<f64>,
}

A single-value metric aggregation that counts the number of values that are extracted from the aggregated documents. See super::SingleMetricResult for return value.

JSON Format

{
    "value_count": {
        "field": "score"
    }
}

Fields

field: String

The field name to compute the count on.

missing: Option<f64>

The missing parameter defines how documents that are missing a value should be treated. By default they will be ignored but it is also possible to treat them as if they had a value. Examples in JSON format: { “field”: “my_numbers”, “missing”: “10.0” }

Implementations

impl CountAggregation

pub fn from_field_name(field_name: String) -> Self

Creates a new CountAggregation instance from a field name.

pub fn field_name(&self) -> &str

Returns the field name the aggregation is computed on.

Trait Implementations

impl Clone for CountAggregation

fn clone(&self) -> CountAggregation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CountAggregation

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CountAggregation

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CountAggregation

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

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 CountAggregation