org.apache.beam.runners.flink.translation.wrappers.streaming

Class FlinkKeyUtils

java.lang.Object

org.apache.beam.runners.flink.translation.wrappers.streaming.FlinkKeyUtils

public class FlinkKeyUtils
extends java.lang.Object

Utility functions for dealing with key encoding. Beam requires keys to be compared in binary format. The helpers here ensure that a consistent encoding is used.

Constructor Summary

Constructors

Constructor and Description
FlinkKeyUtils()

Method Summary

Modifier and Type	Method and Description
static <K> K	decodeKey(java.nio.ByteBuffer byteBuffer, org.apache.beam.sdk.coders.Coder<K> keyCoder) Decodes a key from a ByteBuffer containing a byte array.
static <K> java.nio.ByteBuffer	encodeKey(K key, org.apache.beam.sdk.coders.Coder<K> keyCoder) Encodes a key to a byte array wrapped inside a ByteBuffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

FlinkKeyUtils

public FlinkKeyUtils()

Method Detail

encodeKey

public static <K> java.nio.ByteBuffer encodeKey(K key,
                                                org.apache.beam.sdk.coders.Coder<K> keyCoder)

Encodes a key to a byte array wrapped inside a ByteBuffer.

decodeKey

public static <K> K decodeKey(java.nio.ByteBuffer byteBuffer,
                              org.apache.beam.sdk.coders.Coder<K> keyCoder)

Decodes a key from a ByteBuffer containing a byte array.