Package org.elasticsearch.search.aggregations.bucket.terms

Class StringTermsAggregatorFromFilters

java.lang.Object

org.elasticsearch.search.aggregations.BucketCollector

org.elasticsearch.search.aggregations.Aggregator

org.elasticsearch.search.aggregations.AdaptingAggregator

org.elasticsearch.search.aggregations.bucket.terms.StringTermsAggregatorFromFilters

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.lucene.search.Collector, Releasable

public class StringTermsAggregatorFromFilters
extends AdaptingAggregator

Adapts a terms aggregation into a filters aggregation. Its possible that we could lovingly hand craft an Aggregator that uses similar tricks that'd have lower memory overhead but generally we reach for this when we know that there aren't many distinct values so it doesn't have particularly high memory cost anyway. And we expect to be able to further optimize the filters aggregation in more cases than a special purpose terms aggregator.

Nested Class Summary

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.BucketCollector

NO_OP_COLLECTOR

Constructor Summary

Constructors

Constructor	Description
StringTermsAggregatorFromFilters(Aggregator parent, AggregatorFactories subAggregators, CheckedFunction<AggregatorFactories,FilterByFilterAggregator,IOException> delegate, boolean showTermDocCountError, DocValueFormat format, BucketOrder order, TermsAggregator.BucketCountThresholds bucketCountThresholds, org.apache.lucene.index.TermsEnum terms)

Method Summary

Modifier and Type	Method	Description
protected InternalAggregation	adapt(InternalAggregation delegateResult)	Adapt the result from the collecting Aggregator into the result expected by this Aggregator.

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

buildAggregations, buildEmptyAggregation, close, collectDebugInfo, delegate, getLeafCollector, name, parent, postCollection, preCollection, scoreMode, subAggregator, subAggregators

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

bucketComparator, buildTopLevel, resolveSortPath, resolveSortPathOnValidAgg

Methods inherited from class java.lang.Object

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

Constructor Details

StringTermsAggregatorFromFilters

public StringTermsAggregatorFromFilters(Aggregator parent,
 AggregatorFactories subAggregators,
 CheckedFunction<AggregatorFactories,FilterByFilterAggregator,IOException> delegate,
 boolean showTermDocCountError,
 DocValueFormat format,
 BucketOrder order,
 TermsAggregator.BucketCountThresholds bucketCountThresholds,
 org.apache.lucene.index.TermsEnum terms)
                                 throws IOException

Throws:

IOException

Method Details

adapt

protected InternalAggregation adapt(InternalAggregation delegateResult)
                             throws IOException

Description copied from class: AdaptingAggregator

Adapt the result from the collecting Aggregator into the result expected by this Aggregator.

Specified by:

adapt in class AdaptingAggregator

Throws:

IOException