com.asakusafw.vocabulary.flow.graph

Class ShuffleKey.Order

java.lang.Object

com.asakusafw.vocabulary.flow.graph.ShuffleKey.Order

Enclosing class:

ShuffleKey

public static class ShuffleKey.Order
extends Object

Represents ordering information.

Constructor Summary

Constructors

Constructor and Description
Order(String property, ShuffleKey.Direction direction) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
ShuffleKey.Direction	getDirection() Returns the ordering direction.
String	getProperty() Returns the property name of ordering key.
int	hashCode()
static ShuffleKey.Order	parse(String string) Parses a string form of <property-name> <direction> (as same as toString()), and returns the corresponded ShuffleKey.Order object.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Order

public Order(String property,
             ShuffleKey.Direction direction)

Creates a new instance.

Parameters:

property - the property name

direction - the ordering direction

Throws:

IllegalArgumentException - if some parameters are null

Method Detail

getProperty

public String getProperty()

Returns the property name of ordering key.

Returns:

the property name

getDirection

public ShuffleKey.Direction getDirection()

Returns the ordering direction.

Returns:

the ordering direction

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

parse

public static ShuffleKey.Order parse(String string)

Parses a string form of <property-name> <direction> (as same as toString()), and returns the corresponded ShuffleKey.Order object.

Parameters:

string - a string of toString()

Returns:

the corresponded object, or null if the string is not valid form

Throws:

IllegalArgumentException - if the parameter is null

toString

public String toString()

Overrides:

toString in class Object