Package org.elasticsearch.index.query.functionscore

Class ScoreFunctionBuilder<FB extends ScoreFunctionBuilder<FB>>

java.lang.Object

org.elasticsearch.index.query.functionscore.ScoreFunctionBuilder<FB>

All Implemented Interfaces:

NamedWriteable, Writeable, ToXContent, ToXContentFragment

Direct Known Subclasses:

DecayFunctionBuilder, FieldValueFactorFunctionBuilder, RandomScoreFunctionBuilder, ScriptScoreFunctionBuilder, WeightBuilder

public abstract class ScoreFunctionBuilder<FB extends ScoreFunctionBuilder<FB>>
extends Object
implements ToXContentFragment, NamedWriteable

Nested Class Summary

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

EMPTY_PARAMS

Constructor Summary

Constructors

Constructor	Description
ScoreFunctionBuilder()	Standard empty constructor.
ScoreFunctionBuilder(StreamInput in)	Read from a stream.

Method Summary

Modifier and Type	Method	Description
protected abstract boolean	doEquals(FB functionBuilder)	Check that two instances of the same subclass of ScoreFunctionBuilder are equal.
protected abstract int	doHashCode()	Hashcode for fields defined in this subclass of ScoreFunctionBuilder.
protected abstract ScoreFunction	doToFunction(QueryShardContext context)	Build the Lucene ScoreFunction for this builder.
protected abstract void	doWriteTo(StreamOutput out)	Write the subclass's components into the stream.
protected abstract void	doXContent(XContentBuilder builder, ToXContent.Params params)	Convert this subclass's data into XContent.
boolean	equals(Object obj)
abstract String	getName()	The name of this score function.
Float	getWeight()	The weight applied to the function before combining.
String	getWriteableName()	Returns the name of the writeable object
int	hashCode()
FB	setWeight(float weight)	Set the weight applied to the function before combining.
ScoreFunction	toFunction(QueryShardContext context)	Called on a data node, converts this ScoreFunctionBuilder into its corresponding Lucene function object.
XContentBuilder	toXContent(XContentBuilder builder, ToXContent.Params params)
void	writeTo(StreamOutput out)	Write this into the StreamOutput.

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

Constructor Detail

ScoreFunctionBuilder

public ScoreFunctionBuilder()

Standard empty constructor.

ScoreFunctionBuilder

public ScoreFunctionBuilder(StreamInput in)
                     throws IOException

Read from a stream.

Throws:

IOException

Method Detail

writeTo

public final void writeTo(StreamOutput out)
                   throws IOException

Description copied from interface: Writeable

Write this into the StreamOutput.

Specified by:

writeTo in interface Writeable

Throws:

IOException

doWriteTo

protected abstract void doWriteTo(StreamOutput out)
                           throws IOException

Write the subclass's components into the stream.

Throws:

IOException

getName

public abstract String getName()

The name of this score function.

setWeight

public final FB setWeight(float weight)

Set the weight applied to the function before combining.

getWeight

public final Float getWeight()

The weight applied to the function before combining.

toXContent

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

Specified by:

toXContent in interface ToXContent

Throws:

IOException

doXContent

protected abstract void doXContent(XContentBuilder builder,
                                   ToXContent.Params params)
                            throws IOException

Convert this subclass's data into XContent.

Throws:

IOException

getWriteableName

public String getWriteableName()

Description copied from interface: NamedWriteable

Returns the name of the writeable object

Specified by:

getWriteableName in interface NamedWriteable

equals

public final boolean equals(Object obj)

Overrides:

equals in class Object

doEquals

protected abstract boolean doEquals(FB functionBuilder)

Check that two instances of the same subclass of ScoreFunctionBuilder are equal. Implementers don't need to check any fields in ScoreFunctionBuilder, just fields that they define.

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

doHashCode

protected abstract int doHashCode()

Hashcode for fields defined in this subclass of ScoreFunctionBuilder. Implementers should ignore fields defined in ScoreFunctionBuilder because they will already be in the hashCode.

toFunction

public final ScoreFunction toFunction(QueryShardContext context)
                               throws IOException

Called on a data node, converts this ScoreFunctionBuilder into its corresponding Lucene function object.

Throws:

IOException

doToFunction

protected abstract ScoreFunction doToFunction(QueryShardContext context)
                                       throws IOException

Build the Lucene ScoreFunction for this builder. Implementers should ignore things defined in ScoreFunctionBuilder like weight as they will be handled by the function that calls this one.

Throws:

IOException