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

Class ConcatenatedExtract<FROM,OVER,TO>

java.lang.Object

org.apache.flink.streaming.api.functions.windowing.delta.extractor.ConcatenatedExtract<FROM,OVER,TO>

Type Parameters:

FROM - The input type of the first extractor.

OVER - The output type of the first and the input type of the second extractor.

TO - The output type of the second extractor and the output type of the over all extraction.

All Implemented Interfaces:

Serializable, Extractor<FROM,TO>

@Internal
public class ConcatenatedExtract<FROM,OVER,TO>
extends Object
implements Extractor<FROM,TO>

Combines two extractors which will be executed one after each other.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ConcatenatedExtract(Extractor<FROM,OVER> e1, Extractor<OVER,TO> e2)	Combines two extractors which will be executed one after each other.

Method Summary

Modifier and Type	Method	Description
<OUT> ConcatenatedExtract<FROM,TO,OUT>	add(Extractor<TO,OUT> e3)
TO	extract(FROM in)	Extracts/Converts the given input to an object of the output type.

Methods inherited from class java.lang.Object

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

Constructor Details

ConcatenatedExtract

public ConcatenatedExtract(Extractor<FROM,OVER> e1,
 Extractor<OVER,TO> e2)

Combines two extractors which will be executed one after each other.

Parameters:

e1 - First extractor: This extractor gets applied to the input data first. Its output as then passed as input to the second extractor.

e2 - Second extractor: This extractor gets the output of the first extractor as input. Its output is then the result of the over all extraction.

Method Details

extract

public TO extract(FROM in)

Description copied from interface: Extractor

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

Specified by:

extract in interface Extractor<FROM,OVER>

Parameters:

in - the input data

Returns:

the extracted/converted data

add

public <OUT> ConcatenatedExtract<FROM,TO,OUT> add(Extractor<TO,OUT> e3)