com.tinkerpop.gremlin.process.computer

Class MapReduce.NullObject

java.lang.Object

com.tinkerpop.gremlin.process.computer.MapReduce.NullObject

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<MapReduce.NullObject>

Enclosing interface:

MapReduce<MK,MV,RK,RV,R>

public static class MapReduce.NullObject
extends java.lang.Object
implements java.lang.Comparable<MapReduce.NullObject>, java.io.Serializable

A convenience singleton when a single key is needed so that all emitted values converge to the same combiner/reducer.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NullObject()

Method Summary

Modifier and Type	Method and Description
int	compareTo(MapReduce.NullObject nullObject)
boolean	equals(java.lang.Object object)
int	hashCode()
static MapReduce.NullObject	instance()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

NullObject

public NullObject()

Method Detail

instance

public static MapReduce.NullObject instance()

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object

compareTo

public int compareTo(MapReduce.NullObject nullObject)

Specified by:

compareTo in interface java.lang.Comparable<MapReduce.NullObject>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object