Package org.elasticsearch.search.aggregations.pipeline

Class BucketMetricsPipelineAggregator

java.lang.Object

org.elasticsearch.search.aggregations.pipeline.PipelineAggregator

org.elasticsearch.search.aggregations.pipeline.SiblingPipelineAggregator

org.elasticsearch.search.aggregations.pipeline.BucketMetricsPipelineAggregator

All Implemented Interfaces:

NamedWriteable, Writeable

Direct Known Subclasses:

AvgBucketPipelineAggregator, ExtendedStatsBucketPipelineAggregator, MaxBucketPipelineAggregator, MinBucketPipelineAggregator, PercentilesBucketPipelineAggregator, StatsBucketPipelineAggregator, SumBucketPipelineAggregator

public abstract class BucketMetricsPipelineAggregator
extends SiblingPipelineAggregator

A class of sibling pipeline aggregations which calculate metrics across the buckets of a sibling aggregation

Nested Class Summary

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

PipelineAggregator.Parser

Nested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable

Writeable.Reader<V>, Writeable.Writer<V>

Field Summary

Fields

Modifier and Type	Field	Description
protected DocValueFormat	format
protected BucketHelpers.GapPolicy	gapPolicy

Method Summary

Modifier and Type	Method	Description
protected abstract InternalAggregation	buildAggregation(List<PipelineAggregator> pipelineAggregators, Map<String,Object> metadata)	Called after a collection run is finished to build the aggregation for the collected state.
protected abstract void	collectBucketValue(String bucketKey, Double bucketValue)	Called for each bucket with a value so the state can be modified based on the key and metric value for this bucket
InternalAggregation	doReduce(Aggregations aggregations, InternalAggregation.ReduceContext context)
void	doWriteTo(StreamOutput out)
protected void	innerWriteTo(StreamOutput out)
protected void	preCollection()	Called before initial collection and between successive collection runs.

Methods inherited from class org.elasticsearch.search.aggregations.pipeline.SiblingPipelineAggregator

reduce

Methods inherited from class org.elasticsearch.search.aggregations.pipeline.PipelineAggregator

bucketsPaths, metaData, name, writeTo

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.elasticsearch.common.io.stream.NamedWriteable

getWriteableName

Field Detail

format

protected final DocValueFormat format

gapPolicy

protected final BucketHelpers.GapPolicy gapPolicy

Method Detail

doWriteTo

public final void doWriteTo(StreamOutput out)
                     throws IOException

Specified by:

doWriteTo in class PipelineAggregator

Throws:

IOException

innerWriteTo

protected void innerWriteTo(StreamOutput out)
                     throws IOException

Throws:

IOException

doReduce

public final InternalAggregation doReduce(Aggregations aggregations,
                                          InternalAggregation.ReduceContext context)

Specified by:

doReduce in class SiblingPipelineAggregator

preCollection

protected void preCollection()

Called before initial collection and between successive collection runs. A chance to initialize or re-initialize state

buildAggregation

protected abstract InternalAggregation buildAggregation(List<PipelineAggregator> pipelineAggregators,
                                                        Map<String,Object> metadata)

Called after a collection run is finished to build the aggregation for the collected state.

Parameters:

pipelineAggregators - the pipeline aggregators to add to the resulting aggregation

metadata - the metadata to add to the resulting aggregation

collectBucketValue

protected abstract void collectBucketValue(String bucketKey,
                                           Double bucketValue)

Called for each bucket with a value so the state can be modified based on the key and metric value for this bucket

Parameters:

bucketKey - the key for this bucket as a String

bucketValue - the value of the metric specified in bucketsPath for this bucket