Missing Aggregation

The Missing aggregation is a field data based single bucket aggregation, that creates a bucket of all documents in the current document set context that are missing a field value.

In order to use the Missing aggregation import the following:

import zio.elasticsearch.aggregation.MissingAggregation
import zio.elasticsearch.ElasticAggregation.missingAggregation

You can create a Missing aggregation using the missingAggregation method this way:

val aggregation: MissingAggregation = missingAggregation(name = "missingAggregation", field = "stringField")

You can create a type-safe Missing aggregation using the missingAggregation method this way:

// Document.stringField must be string value, because of Missing aggregation
val aggregation: MissingAggregation = missingAggregation(name = "missingAggregation", field = Document.stringField)

If you want to add aggregation (on the same level), you can use withAgg method:

val multipleAggregations: MultipleAggregations = missingAggregation(name = "missingAggregation1", field = Document.stringField).withAgg(missingAggregation(name = "missingAggregation2", field = Document.stringField))

You can find more information about Missing aggregation here.