Module org.elasticsearch.server

Package org.elasticsearch.search.aggregations.metrics

Class InternalScriptedMetric

java.lang.Object

org.elasticsearch.search.aggregations.InternalAggregation

org.elasticsearch.search.aggregations.metrics.InternalScriptedMetric

All Implemented Interfaces:

NamedWriteable, Writeable, Aggregation, ScriptedMetric, ToXContent, ToXContentFragment

public class InternalScriptedMetric
extends InternalAggregation
implements ScriptedMetric

Nested Class Summary

Nested classes/interfaces inherited from interface org.elasticsearch.search.aggregations.Aggregation

Aggregation.CommonFields

Nested classes/interfaces inherited from interface org.elasticsearch.xcontent.ToXContent

ToXContent.DelegatingMapParams, ToXContent.MapParams, ToXContent.Params

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

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

Field Summary

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

metadata, name

Fields inherited from interface org.elasticsearch.search.aggregations.Aggregation

TYPED_KEYS_DELIMITER

Fields inherited from interface org.elasticsearch.xcontent.ToXContent

EMPTY_PARAMS

Constructor Summary

Constructors

Constructor	Description
InternalScriptedMetric(StreamInput in)	Read from a stream.

Method Summary

Modifier and Type	Method	Description
Object	aggregation()	The result of the aggregation.
protected void	doWriteTo(StreamOutput out)
XContentBuilder	doXContentBody(XContentBuilder builder, ToXContent.Params params)
boolean	equals(Object obj)
InternalAggregation	finalizeSampling(SamplingContext samplingContext)	Called by the parent sampling context.
Object	getProperty(List<String> path)
String	getWriteableName()	Returns the name of the writeable object
int	hashCode()
protected boolean	mustReduceOnSingleInternalAgg()	Signal the framework if the InternalAggregation.reduce(List, AggregationReduceContext) phase needs to be called when there is only one InternalAggregation.
InternalAggregation	reduce(List<InternalAggregation> aggregations, AggregationReduceContext reduceContext)	Reduces the given aggregations to a single one and returns it.

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

copyWithRewritenBuckets, forEachBucket, getMetadata, getName, getProperty, getType, isMapped, readSize, reducePipelines, sortValue, sortValue, toString, toXContent, writeSize, writeTo

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.elasticsearch.search.aggregations.Aggregation

getMetadata, getName, getType

Methods inherited from interface org.elasticsearch.xcontent.ToXContent

toXContent

Methods inherited from interface org.elasticsearch.xcontent.ToXContentFragment

isFragment

Constructor Details

InternalScriptedMetric

public InternalScriptedMetric(StreamInput in)
                       throws IOException

Read from a stream.

Throws:

IOException

Method Details

doWriteTo

protected void doWriteTo(StreamOutput out)
                  throws IOException

Specified by:

doWriteTo in class InternalAggregation

Throws:

IOException

getWriteableName

public String getWriteableName()

Description copied from interface: NamedWriteable

Returns the name of the writeable object

Specified by:

getWriteableName in interface NamedWriteable

aggregation

public Object aggregation()

Description copied from interface: ScriptedMetric

The result of the aggregation. The type of the object depends on the aggregation that was run.

Specified by:

aggregation in interface ScriptedMetric

reduce

public InternalAggregation reduce(List<InternalAggregation> aggregations,
 AggregationReduceContext reduceContext)

Description copied from class: InternalAggregation

Reduces the given aggregations to a single one and returns it. In most cases, the assumption will be the all given aggregations are of the same type (the same type as this aggregation). For best efficiency, when implementing, try reusing an existing instance (typically the first in the given list) to save on redundant object construction.

Specified by:

reduce in class InternalAggregation

See Also:

• InternalAggregation.mustReduceOnSingleInternalAgg()

finalizeSampling

public InternalAggregation finalizeSampling(SamplingContext samplingContext)

Description copied from class: InternalAggregation

Called by the parent sampling context. Should only ever be called once as some aggregations scale their internal values

Overrides:

finalizeSampling in class InternalAggregation

Parameters:

samplingContext - the current sampling context

Returns:

new aggregation with the sampling context applied, could be the same aggregation instance if nothing needs to be done

mustReduceOnSingleInternalAgg

protected boolean mustReduceOnSingleInternalAgg()

Description copied from class: InternalAggregation

Signal the framework if the InternalAggregation.reduce(List, AggregationReduceContext) phase needs to be called when there is only one InternalAggregation.

Specified by:

mustReduceOnSingleInternalAgg in class InternalAggregation

getProperty

public Object getProperty(List<String> path)

Specified by:

getProperty in class InternalAggregation

doXContentBody

public XContentBuilder doXContentBody(XContentBuilder builder,
 ToXContent.Params params)
                               throws IOException

Specified by:

doXContentBody in class InternalAggregation

Throws:

IOException

equals

public boolean equals(Object obj)

Overrides:

equals in class InternalAggregation

hashCode

public int hashCode()

Overrides:

hashCode in class InternalAggregation