org.apache.flink.streaming.api.functions.windowing.delta.extractor

类 FieldsFromTuple

java.lang.Object

org.apache.flink.streaming.api.functions.windowing.delta.extractor.FieldsFromTuple

所有已实现的接口:

Serializable, Extractor<org.apache.flink.api.java.tuple.Tuple,double[]>

@Internal
public class FieldsFromTuple
extends Object
implements Extractor<org.apache.flink.api.java.tuple.Tuple,double[]>

Extracts one or more fields of the type Double from a tuple and puts them into a new double[].

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
FieldsFromTuple(int... indexes) Extracts one or more fields of the type Double from a tuple and puts them into a new double[] (in the specified order).

方法概要

限定符和类型	方法和说明
double[]	extract(org.apache.flink.api.java.tuple.Tuple in) Extracts/Converts the given input to an object of the output type.

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

FieldsFromTuple

public FieldsFromTuple(int... indexes)

Extracts one or more fields of the type Double from a tuple and puts them into a new double[] (in the specified order).

参数:

indexes - The indexes of the fields to be extracted.

方法详细资料

extract

public double[] extract(org.apache.flink.api.java.tuple.Tuple in)

从接口复制的说明: Extractor

Extracts/Converts the given input to an object of the output type.

指定者:

extract 在接口中 Extractor<org.apache.flink.api.java.tuple.Tuple,double[]>

参数:

in - the input data

返回:

the extracted/converted data