Package org.apache.beam.runners.flink.translation.types

Class WindowedKvKeySelector<InputT,K>

java.lang.Object

org.apache.beam.runners.flink.translation.types.WindowedKvKeySelector<InputT,K>

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.java.functions.KeySelector<WindowedValue<KV<K,InputT>>,byte[]>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<byte[]>

public class WindowedKvKeySelector<InputT,K>
extends Object
implements org.apache.flink.api.java.functions.KeySelector<WindowedValue<KV<K,InputT>>,byte[]>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<byte[]>

KeySelector that extracts the key from a KV and returns it in encoded form as a byte array.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
WindowedKvKeySelector(Coder<K> keyCoder, Coder<? extends BoundedWindow> windowCoder)

Method Summary

Modifier and Type	Method	Description
byte[]	getKey(WindowedValue<KV<K,InputT>> value)
org.apache.flink.api.common.typeinfo.TypeInformation<byte[]>	getProducedType()

Methods inherited from class java.lang.Object

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

Constructor Details

WindowedKvKeySelector

public WindowedKvKeySelector(Coder<K> keyCoder,
 Coder<? extends BoundedWindow> windowCoder)

Method Details

getKey

public byte[] getKey(WindowedValue<KV<K,InputT>> value)
              throws Exception

Specified by:

getKey in interface org.apache.flink.api.java.functions.KeySelector<InputT,K>

Throws:

Exception

getProducedType

public org.apache.flink.api.common.typeinfo.TypeInformation<byte[]> getProducedType()

Specified by:

getProducedType in interface org.apache.flink.api.java.typeutils.ResultTypeQueryable<InputT>