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

类 ArrayFromTuple

java.lang.Object

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

所有已实现的接口:

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

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

Converts a Tuple to an Object-Array. The field which should be included in the array can selected and reordered as needed.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
ArrayFromTuple() Using this constructor the extractor will convert the whole tuple (all fields in the original order) to an array.
ArrayFromTuple(int... indexes) Using this constructor the extractor will combine the fields as specified in the indexes parameter in an object array.

方法概要

限定符和类型	方法和说明
Object[]	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

ArrayFromTuple

public ArrayFromTuple()

Using this constructor the extractor will convert the whole tuple (all fields in the original order) to an array.

ArrayFromTuple

public ArrayFromTuple(int... indexes)

Using this constructor the extractor will combine the fields as specified in the indexes parameter in an object array.

参数:

indexes - the field ids (enumerated from 0)

方法详细资料

extract

public Object[] 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,Object[]>

参数:

in - the input data

返回:

the extracted/converted data