Package org.elasticsearch.search.aggregations.bucket.significant.heuristics

Class ScriptHeuristic

java.lang.Object

org.elasticsearch.search.aggregations.bucket.significant.heuristics.SignificanceHeuristic

org.elasticsearch.search.aggregations.bucket.significant.heuristics.ScriptHeuristic

All Implemented Interfaces:

NamedWriteable, Writeable, ToXContent, ToXContentFragment

public class ScriptHeuristic
extends SignificanceHeuristic

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	ScriptHeuristic.LongAccessor

Nested classes/interfaces inherited from interface org.elasticsearch.common.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

Modifier and Type	Field	Description
static String	NAME

Fields inherited from interface org.elasticsearch.common.xcontent.ToXContent

EMPTY_PARAMS

Constructor Summary

Constructors

Constructor	Description
ScriptHeuristic(StreamInput in)	Read from a stream.
ScriptHeuristic(Script script)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
double	getScore(long subsetFreq, long subsetSize, long supersetFreq, long supersetSize)	Calculates score with a script
String	getWriteableName()	Returns the name of the writeable object
int	hashCode()
static SignificanceHeuristic	parse(XContentParser parser)
SignificanceHeuristic	rewrite(QueryShardContext queryShardContext)	Provides a hook for subclasses to provide a version of the heuristic prepared for execution on data on a shard.
SignificanceHeuristic	rewrite(InternalAggregation.ReduceContext context)	Provides a hook for subclasses to provide a version of the heuristic prepared for execution on data on the coordinating node.
XContentBuilder	toXContent(XContentBuilder builder, ToXContent.Params builderParams)
void	writeTo(StreamOutput out)	Write this into the StreamOutput.

Methods inherited from class org.elasticsearch.search.aggregations.bucket.significant.heuristics.SignificanceHeuristic

checkFrequencyValidity

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.elasticsearch.common.xcontent.ToXContentFragment

isFragment

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

ScriptHeuristic

public ScriptHeuristic(Script script)

ScriptHeuristic

public ScriptHeuristic(StreamInput in)
                throws IOException

Read from a stream.

Throws:

IOException

Method Detail

writeTo

public void writeTo(StreamOutput out)
             throws IOException

Description copied from interface: Writeable

Write this into the StreamOutput.

Throws:

IOException

rewrite

public SignificanceHeuristic rewrite(InternalAggregation.ReduceContext context)

Description copied from class: SignificanceHeuristic

Provides a hook for subclasses to provide a version of the heuristic prepared for execution on data on the coordinating node.

Overrides:

rewrite in class SignificanceHeuristic

Parameters:

context - the reduce context on the coordinating node

Returns:

a version of this heuristic suitable for execution

rewrite

public SignificanceHeuristic rewrite(QueryShardContext queryShardContext)

Description copied from class: SignificanceHeuristic

Provides a hook for subclasses to provide a version of the heuristic prepared for execution on data on a shard.

Overrides:

rewrite in class SignificanceHeuristic

Parameters:

queryShardContext - the shard context on the data node

Returns:

a version of this heuristic suitable for execution

getScore

public double getScore(long subsetFreq,
                       long subsetSize,
                       long supersetFreq,
                       long supersetSize)

Calculates score with a script

Specified by:

getScore in class SignificanceHeuristic

Parameters:

subsetFreq - The frequency of the term in the selected sample

subsetSize - The size of the selected sample (typically number of docs)

supersetFreq - The frequency of the term in the superset from which the sample was taken

supersetSize - The size of the superset from which the sample was taken (typically number of docs)

Returns:

a "significance" score

getWriteableName

public String getWriteableName()

Description copied from interface: NamedWriteable

Returns the name of the writeable object

toXContent

public XContentBuilder toXContent(XContentBuilder builder,
                                  ToXContent.Params builderParams)
                           throws IOException

Throws:

IOException

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

parse

public static SignificanceHeuristic parse(XContentParser parser)
                                   throws IOException,
                                          QueryShardException

Throws:

IOException

QueryShardException