OpenSearch/docs/java-api/aggregations/bucket/children-aggregation.asciidoc
David Pilato d7d937300a Add java documentation for aggregations
Buckets:
--------

* terms
* range
* global
* filter
* filters
* missing
* nested
* reverse nested
* children
* significant terms
* date range
* ip range
* range
* histogram
* date histogram
* geo distance
* geo hash grid

Metrics:
--------

* min
* max
* sum
* avg
* stats
* extended stats
* value count
* percentiles
* percentile rank
* cardinality
* geo bounds
* top hits
* scripted metric
2014-11-29 19:46:33 +01:00

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[[java-aggs-bucket-children]]
==== Children Aggregation
Here is how you can use
{ref}/search-aggregations-bucket-children-aggregation.html[Children Aggregation]
with Java API.
===== Prepare aggregation request
Here is an example on how to create the aggregation request:
[source,java]
--------------------------------------------------
AggregationBuilder aggregation =
AggregationBuilders
.children("agg")
.childType("reseller");
--------------------------------------------------
===== Use aggregation response
Import Aggregation definition classes:
[source,java]
--------------------------------------------------
import org.elasticsearch.search.aggregations.bucket.children.Children;
--------------------------------------------------
[source,java]
--------------------------------------------------
// sr is here your SearchResponse object
Children agg = sr.getAggregations().get("agg");
agg.getDocCount(); // Doc count
--------------------------------------------------