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

Class ArrayFromTuple

java.lang.Object

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

All Implemented Interfaces:

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.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
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.

Method Summary

Modifier and Type	Method and Description
Object[]	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 Detail

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.

Parameters:

indexes - the field ids (enumerated from 0)

Method Detail

extract

public Object[] 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,Object[]>

Parameters:

in - the input data

Returns:

the extracted/converted data