org.elasticsearch.search.aggregations.metrics.max

Class MaxAggregator

java.lang.Object

org.elasticsearch.search.aggregations.BucketCollector

org.elasticsearch.search.aggregations.Aggregator

org.elasticsearch.search.aggregations.AggregatorBase

org.elasticsearch.search.aggregations.metrics.MetricsAggregator

org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregator

org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregator.SingleValue

org.elasticsearch.search.aggregations.metrics.max.MaxAggregator

All Implemented Interfaces:

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

public class MaxAggregator
extends NumericMetricsAggregator.SingleValue

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MaxAggregator.Factory

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

NumericMetricsAggregator.MultiValue, NumericMetricsAggregator.SingleValue

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

Aggregator.Parser, Aggregator.SubAggCollectionMode

Field Summary

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

collectableSubAggregators, context, name, parent, subAggregators

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

NO_OP_COLLECTOR

Constructor Summary

Constructors

Constructor and Description
MaxAggregator(String name, ValuesSource.Numeric valuesSource, ValueFormatter formatter, AggregationContext context, Aggregator parent, List<PipelineAggregator> pipelineAggregators, Map<String,Object> metaData)

Method Summary

Modifier and Type	Method and Description
InternalAggregation	buildAggregation(long bucket) Build an aggregation for data that has been collected into bucket.
InternalAggregation	buildEmptyAggregation() Build an empty aggregation.
void	doClose() Release instance-specific data.
LeafBucketCollector	getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx, LeafBucketCollector sub) Get a LeafBucketCollector for the given ctx, which should delegate to the given collector.
double	metric(long owningBucketOrd)
boolean	needsScores() Most aggregators don't need scores, make sure to extend this method if your aggregator needs them.

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

buildEmptySubAggregations, close, context, doPostCollection, doPreCollection, getDeferringCollector, getLeafCollector, metaData, name, parent, pipelineAggregators, postCollection, preCollection, runDeferredCollections, shouldDefer, subAggregator, subAggregators, toString

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

descendsFromBucketAggregator

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

wrap

Methods inherited from class java.lang.Object

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

Constructor Detail

MaxAggregator

public MaxAggregator(String name,
                     ValuesSource.Numeric valuesSource,
                     ValueFormatter formatter,
                     AggregationContext context,
                     Aggregator parent,
                     List<PipelineAggregator> pipelineAggregators,
                     Map<String,Object> metaData)
              throws IOException

Throws:

IOException

Method Detail

needsScores

public boolean needsScores()

Description copied from class: AggregatorBase

Most aggregators don't need scores, make sure to extend this method if your aggregator needs them.

Specified by:

needsScores in interface org.apache.lucene.search.Collector

Overrides:

needsScores in class AggregatorBase

getLeafCollector

public 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

metric

public double metric(long owningBucketOrd)

Specified by:

metric in class NumericMetricsAggregator.SingleValue

buildAggregation

public InternalAggregation buildAggregation(long bucket)

Description copied from class: Aggregator

Build an aggregation for data that has been collected into bucket.

Specified by:

buildAggregation in class Aggregator

buildEmptyAggregation

public InternalAggregation buildEmptyAggregation()

Description copied from class: Aggregator

Build an empty aggregation.

Specified by:

buildEmptyAggregation in class Aggregator

doClose

public void doClose()

Description copied from class: AggregatorBase

Release instance-specific data.

Overrides:

doClose in class AggregatorBase