rice.p2p.past.messaging
Class LookupMessage

java.lang.Object
  rice.p2p.past.messaging.PastMessage
      rice.p2p.past.messaging.ContinuationMessage
          rice.p2p.past.messaging.LookupMessage

All Implemented Interfaces:

java.io.Serializable, Continuation, Message

public class LookupMessage

extends ContinuationMessage

Version:

$Id: LookupMessage.java 2302 2005-03-11 00:58:26Z jeffh $

Author:

Alan Mislove, Ansley Post, Peter Druschel

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface rice.Continuation

Continuation.ErrorContinuation, Continuation.ExternalContinuation, Continuation.ExternalContinuationRunnable, Continuation.ExternalRunnable, Continuation.ListenerContinuation, Continuation.MultiContinuation, Continuation.NamedContinuation, Continuation.SimpleContinuation, Continuation.StandardContinuation

Field Summary

Fields inherited from class rice.p2p.past.messaging.ContinuationMessage

exception, response

Fields inherited from class rice.p2p.past.messaging.PastMessage

dest, isResponse, source

Fields inherited from interface rice.p2p.commonapi.Message

HIGH_PRIORITY, LOW_PRIORITY, MEDIUM_HIGH_PRIORITY, MEDIUM_LOW_PRIORITY, MEDIUM_PRIORITY

Constructor Summary

LookupMessage(int uid, Id id, NodeHandle source, Id dest)
Constructor

Method Summary

void	addHop(NodeHandle handle) Method which is designed to be overridden by subclasses if they need to keep track of where they've been.
Id	getId() Method which returns the id
NodeHandle	getPreviousNodeHandle() Method which returns the previous hop (where the message was just at)
boolean	isCached() Returns whether or not this message has been cached
void	setCached() Sets this message as having been cached.
java.lang.String	toString() Returns a string representation of this message

Methods inherited from class rice.p2p.past.messaging.ContinuationMessage

getResponse, receiveException, receiveResult, returnResponse

Methods inherited from class rice.p2p.past.messaging.PastMessage

getDestination, getPriority, getSource, getUID, isResponse, setResponse

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LookupMessage

public LookupMessage(int uid,
                     Id id,
                     NodeHandle source,
                     Id dest)

Constructor

Parameters:

uid - The unique id

id - The location to be stored

useReplicas - Whether or not to look for nearest replicas

source - The source address

dest - The destination address

Method Detail

getId

public Id getId()

Method which returns the id

Returns:

The contained id

isCached

public boolean isCached()

Returns whether or not this message has been cached

Returns:

Whether or not this message has been cached

setCached

public void setCached()

Sets this message as having been cached.

addHop

public void addHop(NodeHandle handle)

Method which is designed to be overridden by subclasses if they need to keep track of where they've been.

Overrides:

addHop in class PastMessage

Parameters:

handle - The current local handle

getPreviousNodeHandle

public NodeHandle getPreviousNodeHandle()

Method which returns the previous hop (where the message was just at)

Returns:

The previous hop

toString

public java.lang.String toString()

Returns a string representation of this message

Overrides:

toString in class java.lang.Object

Returns:

A string representing this message