Package org.elasticsearch.search.aggregations.bucket.nested

Class NestedAggregator

java.lang.Object

org.elasticsearch.search.aggregations.BucketCollector

org.elasticsearch.search.aggregations.Aggregator

org.elasticsearch.search.aggregations.AggregatorBase

org.elasticsearch.search.aggregations.bucket.BucketsAggregator

org.elasticsearch.search.aggregations.bucket.nested.NestedAggregator

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.lucene.search.Collector, Releasable, SingleBucketAggregator

public class NestedAggregator
extends BucketsAggregator
implements SingleBucketAggregator

Nested Class Summary

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

BucketsAggregator.BucketBuilderForFixedCount<B>, BucketsAggregator.BucketBuilderForVariable<B>, BucketsAggregator.ResultBuilderForVariable<B>, BucketsAggregator.SingleBucketResultBuilder

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

Aggregator.BucketComparator, Aggregator.Parser, Aggregator.SubAggCollectionMode

Field Summary

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

collectableSubAggregators, context, DEFAULT_WEIGHT, name, parent, subAggregators

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

NO_OP_COLLECTOR

Method Summary

Modifier and Type	Method	Description
InternalAggregation[]	buildAggregations(long[] owningBucketOrds)	Build the results of this aggregation.
InternalAggregation	buildEmptyAggregation()	Build an empty aggregation.
protected void	doPostCollection()	Can be overridden by aggregator implementation to be called back when the collection phase ends.
LeafBucketCollector	getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx, LeafBucketCollector sub)	Get a LeafBucketCollector for the given ctx, which should delegate to the given collector.
protected void	preGetSubLeafCollectors()	Can be overridden by aggregator implementations that like the perform an operation before the leaf collectors of children aggregators are instantiated for the next segment.

Methods inherited from class org.elasticsearch.search.aggregations.bucket.BucketsAggregator

beforeBuildingBuckets, bucketComparator, bucketDocCount, buildAggregationsForFixedBucketCount, buildAggregationsForSingleBucket, buildAggregationsForVariableBuckets, buildSubAggsForAllBuckets, buildSubAggsForBuckets, buildSubAggsForBuckets, close, collectBucket, collectExistingBucket, descendsFromGlobalAggregator, getDocCounts, grow, incrementBucketDocCount, maxBucketOrd, mergeBuckets, mergeBuckets, resolveSortPath

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

addRequestCircuitBreakerBytes, buildEmptySubAggregations, context, doClose, doPreCollection, getLeafCollector, metadata, name, parent, pointReaderIfAvailable, postCollection, preCollection, scoreMode, subAggregator, subAggregators, toString

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

buildTopLevel, collectDebugInfo, resolveSortPathOnValidAgg

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Details

getLeafCollector

public LeafBucketCollector getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx, LeafBucketCollector sub) throws java.io.IOException

Description copied from class: AggregatorBase

Get a LeafBucketCollector for the given ctx, which should delegate to the given collector.

Specified by:

getLeafCollector in class AggregatorBase

Throws:

java.io.IOException

preGetSubLeafCollectors

protected void preGetSubLeafCollectors() throws java.io.IOException

Description copied from class: AggregatorBase

Can be overridden by aggregator implementations that like the perform an operation before the leaf collectors of children aggregators are instantiated for the next segment.

Overrides:

preGetSubLeafCollectors in class AggregatorBase

Throws:

java.io.IOException

doPostCollection

protected void doPostCollection() throws java.io.IOException

Description copied from class: AggregatorBase

Can be overridden by aggregator implementation to be called back when the collection phase ends.

Overrides:

doPostCollection in class AggregatorBase

Throws:

java.io.IOException

buildAggregations

public InternalAggregation[] buildAggregations(long[] owningBucketOrds) throws java.io.IOException

Description copied from class: Aggregator

Build the results of this aggregation.

Specified by:

buildAggregations in class Aggregator

Parameters:

owningBucketOrds - the ordinals of the buckets that we want to collect from this aggregation

Returns:

the results for each ordinal, in the same order as the array of ordinals

Throws:

java.io.IOException

buildEmptyAggregation

public InternalAggregation buildEmptyAggregation()

Description copied from class: Aggregator

Build an empty aggregation.

Specified by:

buildEmptyAggregation in class Aggregator