org.elasticsearch.search.aggregations.bucket.terms

Class GlobalOrdinalsStringTermsAggregator.LowCardinality

java.lang.Object

org.elasticsearch.search.aggregations.BucketCollector

org.elasticsearch.search.aggregations.Aggregator

org.elasticsearch.search.aggregations.bucket.BucketsAggregator

org.elasticsearch.search.aggregations.bucket.terms.TermsAggregator

org.elasticsearch.search.aggregations.bucket.terms.GlobalOrdinalsStringTermsAggregator

org.elasticsearch.search.aggregations.bucket.terms.GlobalOrdinalsStringTermsAggregator.LowCardinality

All Implemented Interfaces:

AutoCloseable, Releasable, ReaderContextAware

Enclosing class:

GlobalOrdinalsStringTermsAggregator

public static class GlobalOrdinalsStringTermsAggregator.LowCardinality
extends GlobalOrdinalsStringTermsAggregator

Variant of GlobalOrdinalsStringTermsAggregator that resolves global ordinals post segment collection instead of on the fly for each match.This is beneficial for low cardinality fields, because it can reduce the amount of look-ups significantly.

Nested Class Summary

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

GlobalOrdinalsStringTermsAggregator.LowCardinality, GlobalOrdinalsStringTermsAggregator.WithHash

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

TermsAggregator.BucketCountThresholds

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

Aggregator.BucketAggregationMode, Aggregator.Parser, Aggregator.SubAggCollectionMode

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

BucketCollector.BucketAnalysisCollector

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	showTermDocCountError

Fields inherited from class org.elasticsearch.search.aggregations.bucket.terms.GlobalOrdinalsStringTermsAggregator

acceptedGlobalOrdinals, collector, globalOrds, includeExclude, valuesSource

Fields inherited from class org.elasticsearch.search.aggregations.bucket.terms.TermsAggregator

aggsUsedForSorting, bucketCountThresholds, order, subAggCollectMode

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

bigArrays, bucketAggregationMode, COLLECT_MODE, collectableSubAggregators, context, depth, estimatedBucketCount, factories, name, parent, subAggregators

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

NO_OP_COLLECTOR

Constructor Summary

Constructors

Constructor and Description
LowCardinality(String name, AggregatorFactories factories, ValuesSource.Bytes.WithOrdinals.FieldData valuesSource, long estimatedBucketCount, long maxOrd, Terms.Order order, TermsAggregator.BucketCountThresholds bucketCountThresholds, AggregationContext aggregationContext, Aggregator parent, Aggregator.SubAggCollectionMode collectionMode, boolean showTermDocCountError)

Method Summary

Modifier and Type	Method and Description
InternalAggregation	buildEmptyAggregation()
protected void	doClose() Release instance-specific data.
protected void	doPostCollection() Can be overriden by aggregator implementation to be called back when the collection phase ends.
protected org.elasticsearch.search.aggregations.bucket.terms.GlobalOrdinalsStringTermsAggregator.Collector	newCollector(org.apache.lucene.index.RandomAccessOrds ords)
void	setNextReader(org.apache.lucene.index.AtomicReaderContext reader)

Methods inherited from class org.elasticsearch.search.aggregations.bucket.terms.GlobalOrdinalsStringTermsAggregator

buildAggregation, collect, copy, getBucketOrd, shouldCollect

Methods inherited from class org.elasticsearch.search.aggregations.bucket.terms.TermsAggregator

shouldDefer

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

bucketAggregations, bucketDocCount, bucketEmptyAggregations, close, collectBucket, collectBucketNoCounts, collectExistingBucket, getDocCounts, incrementBucketDocCount, maxBucketOrd

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

bucketAggregationMode, buildEmptySubAggregations, context, depth, estimatedBucketCount, gatherAnalysis, hasParentBucketAggregator, name, parent, postCollection, preCollection, runDeferredCollections, subAggregator, subAggregators

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

wrap

Methods inherited from class java.lang.Object

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

Field Detail

showTermDocCountError

protected final boolean showTermDocCountError

Constructor Detail

LowCardinality

public LowCardinality(String name,
                      AggregatorFactories factories,
                      ValuesSource.Bytes.WithOrdinals.FieldData valuesSource,
                      long estimatedBucketCount,
                      long maxOrd,
                      Terms.Order order,
                      TermsAggregator.BucketCountThresholds bucketCountThresholds,
                      AggregationContext aggregationContext,
                      Aggregator parent,
                      Aggregator.SubAggCollectionMode collectionMode,
                      boolean showTermDocCountError)

Method Detail

newCollector

protected org.elasticsearch.search.aggregations.bucket.terms.GlobalOrdinalsStringTermsAggregator.Collector newCollector(org.apache.lucene.index.RandomAccessOrds ords)

Overrides:

newCollector in class GlobalOrdinalsStringTermsAggregator

setNextReader

public void setNextReader(org.apache.lucene.index.AtomicReaderContext reader)

Specified by:

setNextReader in interface ReaderContextAware

Overrides:

setNextReader in class GlobalOrdinalsStringTermsAggregator

doPostCollection

protected void doPostCollection()

Description copied from class: Aggregator

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

Overrides:

doPostCollection in class Aggregator

doClose

protected void doClose()

Description copied from class: Aggregator

Release instance-specific data.

Overrides:

doClose in class Aggregator

buildEmptyAggregation

public InternalAggregation buildEmptyAggregation()

Specified by:

buildEmptyAggregation in class Aggregator