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

类 FieldFromArray<OUT>

java.lang.Object

org.apache.flink.streaming.api.functions.windowing.delta.extractor.FieldFromArray<OUT>

类型参数:

OUT - The type of the extracted field.

所有已实现的接口:

Serializable, Extractor<Object,OUT>

@Internal
public class FieldFromArray<OUT>
extends Object
implements Extractor<Object,OUT>

Extracts a single field out of an array.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
FieldFromArray() Extracts the first field (id 0) from the array.
FieldFromArray(int fieldId) Extracts the field with the given id from the array.

方法概要

限定符和类型	方法和说明
OUT	extract(Object 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

FieldFromArray

public FieldFromArray()

Extracts the first field (id 0) from the array.

FieldFromArray

public FieldFromArray(int fieldId)

Extracts the field with the given id from the array.

参数:

fieldId - The id of the field which will be extracted from the array.

方法详细资料

extract

public OUT extract(Object 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<Object,OUT>

参数:

in - the input data

返回:

the extracted/converted data