com.alicloud.openservices.tablestore.model.search.query

类 FieldValueFactorFunction

java.lang.Object

com.alicloud.openservices.tablestore.model.search.query.FieldValueFactorFunction

public class FieldValueFactorFunction
extends Object

This is an upgraded feature of FieldValueFactor.

It is used in FunctionsScoreQuery, and the function's purpose is to score a doc by performing simple arithmetic operations on a specific field (which must be of type long or double).

For example: In the query of a FunctionsScoreQuery, use a match query to find students whose names contain "Ming", but you want to sort the results by height. At this point, this function can be used. Set the fieldName to height, multiply the factor with the height field to control the weight, use modifier to control the scoring algorithm, including operations like squaring, square root, logarithm, etc. The missing parameter is used to set the default value for the field.

Operation example: fieldName: height, factor: 1.2f, modifier: LOG1P, then score = LOG1P(1.2f * height)

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	FieldValueFactorFunction.Builder
static class	FieldValueFactorFunction.FunctionModifier

构造器概要

构造器

构造器和说明
FieldValueFactorFunction()
FieldValueFactorFunction(String fieldName, Float factor, FieldValueFactorFunction.FunctionModifier modifier, Double missing)

方法概要

限定符和类型	方法和说明
Float	getFactor()
String	getFieldName()
Double	getMissing()
FieldValueFactorFunction.FunctionModifier	getModifier()
static FieldValueFactorFunction.Builder	newBuilder()
void	setFactor(Float factor)
void	setFieldName(String fieldName)
void	setMissing(Double missing)
void	setModifier(FieldValueFactorFunction.FunctionModifier modifier)

从类继承的方法 java.lang.Object

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

构造器详细资料

FieldValueFactorFunction

public FieldValueFactorFunction()

FieldValueFactorFunction

public FieldValueFactorFunction(String fieldName,
                                Float factor,
                                FieldValueFactorFunction.FunctionModifier modifier,
                                Double missing)

方法详细资料

getFieldName

public String getFieldName()

setFieldName

public void setFieldName(String fieldName)

getFactor

public Float getFactor()

setFactor

public void setFactor(Float factor)

getModifier

public FieldValueFactorFunction.FunctionModifier getModifier()

setModifier

public void setModifier(FieldValueFactorFunction.FunctionModifier modifier)

getMissing

public Double getMissing()

setMissing

public void setMissing(Double missing)

newBuilder

public static FieldValueFactorFunction.Builder newBuilder()