com.asakusafw.vocabulary.flow.graph

Class ShuffleKey

java.lang.Object

com.asakusafw.vocabulary.flow.graph.ShuffleKey

public class ShuffleKey
extends Object

Represents shuffle key properties.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ShuffleKey.Direction Represents ordering direction.
static class	ShuffleKey.Order Represents ordering information.

Constructor Summary

Constructors

Constructor and Description
ShuffleKey(List<String> groupProperties, List<ShuffleKey.Order> orderings) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
List<String>	getGroupProperties() Returns the grouping properties.
List<ShuffleKey.Order>	getOrderings() Returns ordering information.
int	hashCode()

Methods inherited from class java.lang.Object

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

Constructor Detail

ShuffleKey

public ShuffleKey(List<String> groupProperties,
                  List<ShuffleKey.Order> orderings)

Creates a new instance.

Parameters:

groupProperties - grouping properties

orderings - ordering information

Throws:

IllegalArgumentException - if some parameters are null

Method Detail

getGroupProperties

public List<String> getGroupProperties()

Returns the grouping properties.

Returns:

the grouping properties

getOrderings

public List<ShuffleKey.Order> getOrderings()

Returns ordering information.

Returns:

ordering information

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object