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

Interface Extractor<FROM,TO>

Type Parameters:

FROM - The input data type.

TO - The output data type.

All Superinterfaces:

Serializable

All Known Implementing Classes:

ArrayFromTuple, ConcatenatedExtract, FieldFromArray, FieldFromTuple, FieldsFromArray, FieldsFromTuple

@Internal
public interface Extractor<FROM,TO>
extends Serializable

Extractors allow to extract/convert one type to another. They are mostly used to extract some fields out of a more complex structure (Tuple/Array) to run further calculation on the extraction result.

Method Summary

Modifier and Type	Method and Description
TO	extract(FROM in) Extracts/Converts the given input to an object of the output type.

Method Detail

extract

TO extract(FROM in)

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

Parameters:

in - the input data

Returns:

the extracted/converted data