org.apache.flink.table.runtime.keyselector

Class NullBinaryRowKeySelector

java.lang.Object

org.apache.flink.table.runtime.keyselector.NullBinaryRowKeySelector

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.java.functions.KeySelector<BaseRow,BaseRow>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<BaseRow>, BaseRowKeySelector

public class NullBinaryRowKeySelector
extends Object
implements BaseRowKeySelector

A utility class which key is always empty no matter what the input row is.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static NullBinaryRowKeySelector	INSTANCE

Constructor Summary

Constructors

Constructor and Description
NullBinaryRowKeySelector()

Method Summary

Modifier and Type	Method and Description
BaseRow	getKey(BaseRow value)
BaseRowTypeInfo	getProducedType()

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final NullBinaryRowKeySelector INSTANCE

Constructor Detail

NullBinaryRowKeySelector

public NullBinaryRowKeySelector()

Method Detail

getKey

public BaseRow getKey(BaseRow value)
               throws Exception

Specified by:

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

Throws:

Exception

getProducedType

public BaseRowTypeInfo getProducedType()

Specified by:

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

Specified by:

getProducedType in interface BaseRowKeySelector