Package org.apache.wayang.flink.compiler

Class KeySelectorFunction<T,K>

java.lang.Object

org.apache.wayang.flink.compiler.KeySelectorFunction<T,K>

All Implemented Interfaces:

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

public class KeySelectorFunction<T,K>
extends Object
implements org.apache.flink.api.java.functions.KeySelector<T,K>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<K>

Wrapper for KeySelector

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
Function<T,K>	impl
Class<K>	key
org.apache.flink.api.common.typeinfo.TypeInformation<K>	typeInformation

Constructor Summary

Constructors

Constructor	Description
KeySelectorFunction(TransformationDescriptor<T,K> transformationDescriptor)

Method Summary

Modifier and Type	Method	Description
K	getKey(T object)
org.apache.flink.api.common.typeinfo.TypeInformation	getProducedType()

Methods inherited from class java.lang.Object

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

Field Details

impl

public Function<T,K> impl

key

public Class<K> key

typeInformation

public org.apache.flink.api.common.typeinfo.TypeInformation<K> typeInformation

Constructor Details

KeySelectorFunction

public KeySelectorFunction(TransformationDescriptor<T,K> transformationDescriptor)

Method Details

getKey

public K getKey(T object)

Specified by:

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

getProducedType

public org.apache.flink.api.common.typeinfo.TypeInformation getProducedType()

Specified by:

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