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

Class FieldFromTuple<OUT>

java.lang.Object

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

Type Parameters:

OUT - The type of the extracted field.

All Implemented Interfaces:

Serializable, Extractor<org.apache.flink.api.java.tuple.Tuple,OUT>

@Internal
public class FieldFromTuple<OUT>
extends Object
implements Extractor<org.apache.flink.api.java.tuple.Tuple,OUT>

Extracts a single field out of a tuple.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
FieldFromTuple(int fieldId)	Extracts the field with the given id from the tuple.

Method Summary

Modifier and Type	Method	Description
OUT	extract(org.apache.flink.api.java.tuple.Tuple 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

FieldFromTuple

public FieldFromTuple(int fieldId)

Extracts the field with the given id from the tuple.

Parameters:

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

Method Details

extract

public OUT extract(org.apache.flink.api.java.tuple.Tuple in)

Description copied from interface: Extractor

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

Specified by:

extract in interface Extractor<org.apache.flink.api.java.tuple.Tuple,OUT>

Parameters:

in - the input data

Returns:

the extracted/converted data