FieldsFromArray (Flink : Streaming Java 2.2.0 API)

java.lang.Object
- org.apache.flink.streaming.api.functions.windowing.delta.extractor.FieldsFromArray<OUT>

Type Parameters:

OUT - The type of the output array. If out is set to String, the output of the extractor will be a String[]. If it is set to String[] the output will be String[][].

All Implemented Interfaces:

Serializable, Extractor<Object,OUT[]>
```
@Internal
public class FieldsFromArray<OUT>
extends Object
implements Extractor<Object,OUT[]>
```
Extracts multiple fields from an array and puts them into a new array of the specified type.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor	Description
`FieldsFromArray(Class<OUT> clazz, int... indexes)`	Extracts multiple fields from an array and puts them in the given order into a new array of the specified type.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

OUT[] extract(Object 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
  - FieldsFromArray
```
public FieldsFromArray(Class<OUT> clazz,
                       int... indexes)
```
    Extracts multiple fields from an array and puts them in the given order into a new array of the specified type.
    
    Parameters:
    
    clazz - the Class object representing the component type of the new array
    
    indexes - The indexes of the fields to be extracted. Any order is possible, but not more than 255 fields due to limitations in Array.newInstance(Class, int...).
- Method Detail
  - extract
```
public OUT[] extract(Object in)
```
    Description copied from interface: Extractor
    
    Extracts/Converts the given input to an object of the output type.
    
    Specified by:
    
    extract in interface Extractor<Object,OUT[]>
    
    Parameters:
    
    in - the input data
    
    Returns:
    
    the extracted/converted data