Package org.opensearch.search.aggregations.bucket.nested

Class ReverseNestedAggregator

java.lang.Object

org.opensearch.search.aggregations.BucketCollector

org.opensearch.search.aggregations.Aggregator

org.opensearch.search.aggregations.AggregatorBase

org.opensearch.search.aggregations.bucket.BucketsAggregator

org.opensearch.search.aggregations.bucket.nested.ReverseNestedAggregator

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.lucene.search.Collector, org.opensearch.common.lease.Releasable, SingleBucketAggregator

public class ReverseNestedAggregator
extends BucketsAggregator
implements SingleBucketAggregator

Aggregates documents that match a nested path.

Opensearch.internal:

Nested Class Summary

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

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

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

Aggregator.BucketComparator, Aggregator.Parser, Aggregator.SubAggCollectionMode

Field Summary

Fields inherited from class org.opensearch.search.aggregations.bucket.BucketsAggregator

docCountProvider

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

collectableSubAggregators, context, DEFAULT_WEIGHT, name, parent, subAggregators

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

NO_OP_COLLECTOR

Constructor Summary

Constructors

Constructor	Description
ReverseNestedAggregator(String name, AggregatorFactories factories, ObjectMapper objectMapper, SearchContext context, Aggregator parent, CardinalityUpperBound cardinality, Map<String,Object> metadata)

Method Summary

Modifier and Type	Method	Description
InternalAggregation[]	buildAggregations(long[] owningBucketOrds)	Build the results of this aggregation.
InternalAggregation	buildEmptyAggregation()	Build an empty aggregation.
protected LeafBucketCollector	getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx, LeafBucketCollector sub)	Get a LeafBucketCollector for the given ctx, which should delegate to the given collector.

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

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

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

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

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

buildTopLevel, collectDebugInfo, getPostCollectionAggregation, resolveSortPathOnValidAgg

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.lucene.search.Collector

setWeight

Constructor Details

ReverseNestedAggregator

public ReverseNestedAggregator(String name,
 AggregatorFactories factories,
 ObjectMapper objectMapper,
 SearchContext context,
 Aggregator parent,
 CardinalityUpperBound cardinality,
 Map<String,Object> metadata)
                        throws IOException

Throws:

IOException

Method Details

getLeafCollector

protected LeafBucketCollector getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx,
 LeafBucketCollector sub)
                                        throws 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:

IOException

buildAggregations

public InternalAggregation[] buildAggregations(long[] owningBucketOrds)
                                        throws 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:

IOException

buildEmptyAggregation

public InternalAggregation buildEmptyAggregation()

Description copied from class: Aggregator

Build an empty aggregation.

Specified by:

buildEmptyAggregation in class Aggregator