org.elasticsearch.search.aggregations.pipeline.bucketmetrics

Class BucketMetricsPipelineAggregator

java.lang.Object

org.elasticsearch.search.aggregations.pipeline.PipelineAggregator

org.elasticsearch.search.aggregations.pipeline.SiblingPipelineAggregator

org.elasticsearch.search.aggregations.pipeline.bucketmetrics.BucketMetricsPipelineAggregator

All Implemented Interfaces:

Streamable

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

Field Summary

Fields

Modifier and Type	Field and Description
protected ValueFormatter	formatter
protected BucketHelpers.GapPolicy	gapPolicy

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

AGGREGATION_TRANFORM_FUNCTION

Constructor Summary

Constructors

Modifier	Constructor and Description
	BucketMetricsPipelineAggregator()
protected	BucketMetricsPipelineAggregator(String name, String[] bucketsPaths, BucketHelpers.GapPolicy gapPolicy, ValueFormatter formatter, Map<String,Object> metaData)

Method Summary

Methods

Modifier and Type	Method and 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
void	doReadFrom(StreamInput in)
InternalAggregation	doReduce(Aggregations aggregations, InternalAggregation.ReduceContext context)
void	doWriteTo(StreamOutput out)
protected void	innerReadFrom(StreamInput in)
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, readFrom, type, writeTo

Methods inherited from class java.lang.Object

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

Field Detail

formatter

protected ValueFormatter formatter

gapPolicy

protected BucketHelpers.GapPolicy gapPolicy

Constructor Detail

BucketMetricsPipelineAggregator

public BucketMetricsPipelineAggregator()

BucketMetricsPipelineAggregator

protected BucketMetricsPipelineAggregator(String name,
                               String[] bucketsPaths,
                               BucketHelpers.GapPolicy gapPolicy,
                               ValueFormatter formatter,
                               Map<String,Object> metaData)

Method Detail

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

doReadFrom

public final void doReadFrom(StreamInput in)
                      throws IOException

Specified by:

doReadFrom in class PipelineAggregator

Throws:

IOException

innerReadFrom

protected void innerReadFrom(StreamInput in)
                      throws IOException

Throws:

IOException

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