org.apache.flink.api.java.operators

Class Keys.SelectorFunctionKeys<T,K>

java.lang.Object

org.apache.flink.api.java.operators.Keys<T>

org.apache.flink.api.java.operators.Keys.SelectorFunctionKeys<T,K>

Enclosing class:

Keys<T>

public static class Keys.SelectorFunctionKeys<T,K>
extends Keys<T>

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.api.java.operators.Keys

Keys.ExpressionKeys<T>, Keys.IncompatibleKeysException, Keys.SelectorFunctionKeys<T,K>

Constructor Summary

Constructors

Constructor and Description
Keys.SelectorFunctionKeys(KeySelector<T,K> keyExtractor, TypeInformation<T> inputType, TypeInformation<K> keyType)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	areCompatible(Keys<?> other) Check if two sets of keys are compatible to each other (matching types, key counts)
int[]	computeLogicalKeyPositions()
KeySelector<T,K>	getKeyExtractor()
TypeInformation<K>	getKeyType()
int	getNumberOfKeyFields()
String	toString()
<E> void	validateCustomPartitioner(Partitioner<E> partitioner, TypeInformation<E> typeInfo)

Methods inherited from class org.apache.flink.api.java.operators.Keys

isEmpty

Methods inherited from class java.lang.Object

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

Constructor Detail

Keys.SelectorFunctionKeys

public Keys.SelectorFunctionKeys(KeySelector<T,K> keyExtractor,
                         TypeInformation<T> inputType,
                         TypeInformation<K> keyType)

Method Detail

getKeyType

public TypeInformation<K> getKeyType()

getKeyExtractor

public KeySelector<T,K> getKeyExtractor()

getNumberOfKeyFields

public int getNumberOfKeyFields()

Specified by:

getNumberOfKeyFields in class Keys<T>

areCompatible

public boolean areCompatible(Keys<?> other)
                      throws Keys.IncompatibleKeysException

Description copied from class: Keys

Check if two sets of keys are compatible to each other (matching types, key counts)

Specified by:

areCompatible in class Keys<T>

Throws:

Keys.IncompatibleKeysException

computeLogicalKeyPositions

public int[] computeLogicalKeyPositions()

Specified by:

computeLogicalKeyPositions in class Keys<T>

validateCustomPartitioner

public <E> void validateCustomPartitioner(Partitioner<E> partitioner,
                                 TypeInformation<E> typeInfo)

Specified by:

validateCustomPartitioner in class Keys<T>

toString

public String toString()

Overrides:

toString in class Object