Package org.elasticsearch.search.aggregations

Class InternalOrder.Aggregation

java.lang.Object

org.elasticsearch.search.aggregations.BucketOrder

org.elasticsearch.search.aggregations.InternalOrder

org.elasticsearch.search.aggregations.InternalOrder.Aggregation

All Implemented Interfaces:

Writeable, ToXContent, ToXContentObject

Enclosing class:

InternalOrder

public static class InternalOrder.Aggregation
extends InternalOrder

MultiBucketsAggregation.Bucket ordering strategy to sort by a sub-aggregation.

Nested Class Summary

Nested classes/interfaces inherited from class org.elasticsearch.search.aggregations.InternalOrder

InternalOrder.Aggregation, InternalOrder.CompoundOrder, InternalOrder.Parser, InternalOrder.Streams

Nested classes/interfaces inherited from interface org.elasticsearch.common.xcontent.ToXContent

ToXContent.DelegatingMapParams, ToXContent.MapParams, ToXContent.Params

Nested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable

Writeable.Reader<V>, Writeable.Writer<V>

Field Summary

Fields inherited from class org.elasticsearch.search.aggregations.InternalOrder

asc, comparator

Fields inherited from interface org.elasticsearch.common.xcontent.ToXContent

EMPTY_PARAMS

Method Summary

Modifier and Type	Method	Description
java.util.Comparator<MultiBucketsAggregation.Bucket>	comparator(Aggregator aggregator)
AggregationPath	path()

Methods inherited from class org.elasticsearch.search.aggregations.InternalOrder

equals, hashCode, isCountDesc, isKeyAsc, isKeyDesc, isKeyOrder, toXContent, validate

Methods inherited from class org.elasticsearch.search.aggregations.BucketOrder

aggregation, aggregation, compound, compound, count, key, toString, writeTo

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.elasticsearch.common.xcontent.ToXContentObject

isFragment

Method Details

path

public AggregationPath path()

Returns:

parsed path to the sub-aggregation to sort on.

comparator

public java.util.Comparator<MultiBucketsAggregation.Bucket> comparator(Aggregator aggregator)

Overrides:

comparator in class InternalOrder

Returns:

A comparator for the bucket based on the given aggregator. The comparator is used in two phases:

- aggregation phase, where each shard builds a list of buckets to be sent to the coordinating node. In this phase, the passed in aggregator will be the aggregator that aggregates the buckets on the shard level.

- reduce phase, where the coordinating node gathers all the buckets from all the shards and reduces them to a final bucket list. In this case, the passed in aggregator will be null.