rice.p2p.past.messaging
Class ContinuationMessage

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

All Implemented Interfaces:

java.io.Serializable, Continuation, Message

Direct Known Subclasses:

FetchHandleMessage, FetchMessage, GCRefreshMessage, InsertMessage, LookupHandlesMessage, LookupMessage

public abstract class ContinuationMessage

extends PastMessage

implements Continuation

Version:

$Id: ContinuationMessage.java 2620 2005-06-29 22:33:06Z jstewart $

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

protected java.lang.Exception	exception
protected java.lang.Object	response

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

dest, id, isResponse, source

Fields inherited from interface rice.p2p.commonapi.Message

HIGH_PRIORITY, LOW_PRIORITY, MEDIUM_HIGH_PRIORITY, MEDIUM_LOW_PRIORITY, MEDIUM_PRIORITY

Constructor Summary

protected

ContinuationMessage(int uid, NodeHandle source, Id dest) Constructor which takes a unique integer Id, as well as the data to be stored

Method Summary

java.lang.Object	getResponse() Returns the response
void	receiveException(java.lang.Exception e) Method which builds a response for this message, using the provided exception, which was thrown
void	receiveResult(java.lang.Object o) Method which builds a response for this message, using the provided object as a result.
void	returnResponse(Continuation c, Environment env, java.lang.String instance) Method by which this message is supposed to return it's response.

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

addHop, getDestination, getPriority, getSource, getUID, isResponse, setResponse

Methods inherited from class java.lang.Object

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

Field Detail

response

protected java.lang.Object response

exception

protected java.lang.Exception exception

Constructor Detail

ContinuationMessage

protected ContinuationMessage(int uid,
                              NodeHandle source,
                              Id dest)

Constructor which takes a unique integer Id, as well as the data to be stored

Parameters:

uid - The unique id

source - The source handle

dest - The destination address

Method Detail

receiveResult

public void receiveResult(java.lang.Object o)

Method which builds a response for this message, using the provided object as a result.

Specified by:

receiveResult in interface Continuation

Parameters:

o - The object argument

receiveException

public void receiveException(java.lang.Exception e)

Method which builds a response for this message, using the provided exception, which was thrown

Specified by:

receiveException in interface Continuation

Parameters:

e - The exception argument

returnResponse

public void returnResponse(Continuation c,
                           Environment env,
                           java.lang.String instance)

Method by which this message is supposed to return it's response.

Specified by:

returnResponse in class PastMessage

Parameters:

c - The continuation to return the reponse to.

getResponse

public java.lang.Object getResponse()

Returns the response

Returns:

The response