viceroy
Class LookupState

java.lang.Object
  |
  +--viceroy.LookupState

All Implemented Interfaces:

java.io.Serializable

public class LookupState

extends java.lang.Object

implements java.io.Serializable

Represent a state of a lookup action in a given time. This is a type-safe enum implementation.

Author:

Anat Talmy

, Oren Dobzinski

See Also:

Serialized Form

Field Summary

private java.lang.String	name The peer's name
private static int	nextOrdinal
private int	ordinal
private static LookupState[]	PRIVATE_VALUES The states of a peer (private)
static LookupState	PROCEED_TO_ROOT_VIA_PARENT State - proceed to root via parent indicates that in the proceed to root phase, we haven't encontered any null parent yet, so we are going up the parent links.
static LookupState	PROCEED_TO_ROOT_VIA_SUCCESSOR State - proceed to root via successor indicates that in the proceed to root phase, we have encontered a null parent, sometime in the past, so now we are using successor links
static LookupState	TRAVERSE_RING State - traverse ring
static LookupState	TRAVERSE_TREE State - traverse tree
static java.util.List	VALUES An unmodifiable list of peer's states

Constructor Summary

private

LookupState(java.lang.String _name) A constructor.

Method Summary

boolean	equals(java.lang.Object that)
int	hashCode()
(package private) java.lang.Object	readResolve()
java.lang.String	toString() toString

Methods inherited from class java.lang.Object

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

Field Detail

name

private final java.lang.String name

The peer's name

PROCEED_TO_ROOT_VIA_PARENT

public static final LookupState PROCEED_TO_ROOT_VIA_PARENT

State - proceed to root via parent indicates that in the proceed to root phase, we haven't encontered any null parent yet, so we are going up the parent links. Note: This was not written in the vicceroy article, and was added as a result of an infinite loop bug we've found.

PROCEED_TO_ROOT_VIA_SUCCESSOR

public static final LookupState PROCEED_TO_ROOT_VIA_SUCCESSOR

State - proceed to root via successor indicates that in the proceed to root phase, we have encontered a null parent, sometime in the past, so now we are using successor links

TRAVERSE_TREE

public static final LookupState TRAVERSE_TREE

State - traverse tree

TRAVERSE_RING

public static final LookupState TRAVERSE_RING

State - traverse ring

PRIVATE_VALUES

private static final LookupState[] PRIVATE_VALUES

The states of a peer (private)

VALUES

public static final java.util.List VALUES

An unmodifiable list of peer's states

nextOrdinal

private static int nextOrdinal

ordinal

private final int ordinal

Constructor Detail

LookupState

private LookupState(java.lang.String _name)

A constructor.

Parameters:

_name - The name of the peer

Method Detail

toString

public java.lang.String toString()

toString

Overrides:

toString in class java.lang.Object

Returns:

the name of the peer

equals

public final boolean equals(java.lang.Object that)

Overrides:

equals in class java.lang.Object

hashCode

public final int hashCode()

Overrides:

hashCode in class java.lang.Object

readResolve

java.lang.Object readResolve()
                       throws java.io.ObjectStreamException

java.io.ObjectStreamException