Module org.elasticsearch.compute

Package org.elasticsearch.compute.data

Class TDigestHolder

java.lang.Object

org.elasticsearch.compute.data.TDigestHolder

All Implemented Interfaces:

GenericNamedWriteable, NamedWriteable, VersionedNamedWriteable, Writeable

public class TDigestHolder
extends Object
implements GenericNamedWriteable

This exists to hold the values from a TDigestBlock. It is roughly parallel to TDigestState in classic aggregations, which we are not using directly because the serialization format is pretty bad for ESQL's use case (specifically, encoding the near-constant compression and merge strategy data inline as opposed to in a dedicated column isn't great). This is writable to support ESQL literals of this type, even though those should not exist. Literal support, and thus a writeable object here, are required for ESQL testing. See for example ShowExecSerializationTest.

Nested Class Summary

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
static final NamedWriteableRegistry.Entry	ENTRY

Constructor Summary

Constructors

Constructor	Description
TDigestHolder(List<Double> centroids, List<Long> counts, double min, double max, double sum, long valueCount)
TDigestHolder(org.apache.lucene.util.BytesRef encodedDigest, double min, double max, double sum, long valueCount)
TDigestHolder(StreamInput in)
TDigestHolder(TDigestState rawTDigest, double min, double max, double sum, long valueCount)
TDigestHolder(org.elasticsearch.tdigest.parsing.TDigestParser.ParsedTDigest parsed)

Method Summary

Modifier and Type	Method	Description
void	addTo(TDigestState state)
static TDigestHolder	empty()
boolean	equals(Object o)
org.apache.lucene.util.BytesRef	getEncodedDigest()
double	getMax()
double	getMin()
TransportVersion	getMinimalSupportedVersion()
double	getSum()
long	getValueCount()
String	getWriteableName()
int	hashCode()
String	toString()
void	writeTo(StreamOutput out)

Methods inherited from class java.lang.Object

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

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

supportsVersion

Field Details

ENTRY

public static final NamedWriteableRegistry.Entry ENTRY

Constructor Details

TDigestHolder

public TDigestHolder(org.apache.lucene.util.BytesRef encodedDigest,
 double min,
 double max,
 double sum,
 long valueCount)

TDigestHolder

public TDigestHolder(TDigestState rawTDigest,
 double min,
 double max,
 double sum,
 long valueCount)

TDigestHolder

public TDigestHolder(org.elasticsearch.tdigest.parsing.TDigestParser.ParsedTDigest parsed)
              throws IOException

Throws:

IOException

TDigestHolder

public TDigestHolder(List<Double> centroids,
 List<Long> counts,
 double min,
 double max,
 double sum,
 long valueCount)
              throws IOException

Throws:

IOException

TDigestHolder

public TDigestHolder(StreamInput in)
              throws IOException

Throws:

IOException

Method Details

empty

public static TDigestHolder empty()

writeTo

public void writeTo(StreamOutput out)
             throws IOException

Specified by:

writeTo in interface Writeable

Throws:

IOException

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

addTo

public void addTo(TDigestState state)

getEncodedDigest

public org.apache.lucene.util.BytesRef getEncodedDigest()

getMax

public double getMax()

getMin

public double getMin()

getSum

public double getSum()

getValueCount

public long getValueCount()

toString

public String toString()

Overrides:

toString in class Object

getWriteableName

public String getWriteableName()

Specified by:

getWriteableName in interface NamedWriteable

Specified by:

getWriteableName in interface VersionedNamedWriteable

getMinimalSupportedVersion

public TransportVersion getMinimalSupportedVersion()

Specified by:

getMinimalSupportedVersion in interface VersionedNamedWriteable