rice.p2p.multiring
Class MultiringNodeHandle

java.lang.Object
  java.util.Observable
      rice.p2p.commonapi.NodeHandle
          rice.p2p.multiring.MultiringNodeHandle

All Implemented Interfaces:

java.io.Serializable, java.util.Observer

public class MultiringNodeHandle

extends NodeHandle

implements java.util.Observer

Author:

Alan Mislove

See Also:

Serialized Form

Field Summary

protected NodeHandle	handle The internal handle
protected Id	ringId The handle's ringId

Fields inherited from class rice.p2p.commonapi.NodeHandle

DECLARED_DEAD, DECLARED_LIVE, PROXIMITY_CHANGED

Constructor Summary

MultiringNodeHandle(Id ringId, NodeHandle handle)
Constructor

Method Summary

boolean	checkLiveness() Requests that the underlying transport layer check to ensure that the remote node is live.
boolean	equals(java.lang.Object o) Returns whether or not this object is equal to the provided one
protected NodeHandle	getHandle() Returns the internal handle
Id	getId() Returns this node's id.
Id	getRingId() Returns the ringId of this node handle
int	hashCode() Returns the hashCode
boolean	isAlive() Returns whether or not this node is currently alive
int	proximity() Returns the current proximity value of this node
java.lang.String	toString() Prints out the string
void	update(java.util.Observable o, java.lang.Object obj) Observable callback.

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Field Detail

handle

protected NodeHandle handle

The internal handle

ringId

protected Id ringId

The handle's ringId

Constructor Detail

MultiringNodeHandle

public MultiringNodeHandle(Id ringId,
                           NodeHandle handle)

Constructor

Parameters:

handle - The handle to wrap

ringId - The handle's ringId

Method Detail

getHandle

protected NodeHandle getHandle()

Returns the internal handle

Returns:

The internal handle

getRingId

public Id getRingId()

Returns the ringId of this node handle

Returns:

This node's ringId

getId

public Id getId()

Returns this node's id.

Specified by:

getId in class NodeHandle

Returns:

The corresponding node's id.

isAlive

public boolean isAlive()

Returns whether or not this node is currently alive

Specified by:

isAlive in class NodeHandle

Returns:

Whether or not this node is currently alive

proximity

public int proximity()

Returns the current proximity value of this node

Specified by:

proximity in class NodeHandle

Returns:

The current proximity value of this node

update

public void update(java.util.Observable o,
                   java.lang.Object obj)

Observable callback. Simply rebroadcasts

Specified by:

update in interface java.util.Observer

Parameters:

o - the updated object

obj - The paramter

toString

public java.lang.String toString()

Prints out the string

Overrides:

toString in class java.lang.Object

Returns:

A string

equals

public boolean equals(java.lang.Object o)

Returns whether or not this object is equal to the provided one

Overrides:

equals in class java.lang.Object

Parameters:

o - The object to compare to

Returns:

Whether or not this is object is equal

hashCode

public int hashCode()

Returns the hashCode

Overrides:

hashCode in class java.lang.Object

Returns:

hashCode

checkLiveness

public boolean checkLiveness()

Requests that the underlying transport layer check to ensure that the remote node is live. If the node is found to be live, nothing happens, but if the node does not respond, the transport layer make take steps to verfify that the node is dead. Such steps could include finding an alteranate route to the node.

Specified by:

checkLiveness in class NodeHandle

Returns:

Whether or not the node is currently alive