fabric.messages

Class DissemReadMessage

java.lang.Object

fabric.messages.Message<DissemReadMessage.Response,AccessException>

fabric.messages.DissemReadMessage

public final class DissemReadMessage
extends Message<DissemReadMessage.Response,AccessException>

A DissemReadMessage represents a request from a dissemination node to read an object at a store. This implicitly subscribes the worker to receive the next update to the object.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DissemReadMessage.Response

Nested classes/interfaces inherited from class fabric.messages.Message

Message.MessageType, Message.NoException

Field Summary

Fields

Modifier and Type	Field and Description
long	onum The onum of the object to read.

Fields inherited from class fabric.messages.Message

exceptionClass, messageType

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DissemReadMessage(java.io.DataInput in)
	DissemReadMessage(long onum)

Method Summary

Modifier and Type	Method and Description
DissemReadMessage.Response	dispatch(RemoteIdentity<RemoteWorker> client, MessageHandler h) Visitor method.
protected DissemReadMessage.Response	readResponse(java.io.DataInput in) Creates a Response message of the appropriate type using the provided DataOutput
protected void	writeMessage(java.io.DataOutput out) Writes this message out on the given output stream.
protected void	writeResponse(java.io.DataOutput out, DissemReadMessage.Response r) Writes a Response message of the appropriate type using the provided DataOutput.

Methods inherited from class fabric.messages.Message

readObject, readRef, receive, respond, respond, send, writeObject, writeRef

Methods inherited from class java.lang.Object

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

Field Detail

onum

public final long onum

The onum of the object to read.

Constructor Detail

DissemReadMessage

public DissemReadMessage(long onum)

DissemReadMessage

protected DissemReadMessage(java.io.DataInput in)
                     throws java.io.IOException

Throws:

java.io.IOException

Method Detail

dispatch

public DissemReadMessage.Response dispatch(RemoteIdentity<RemoteWorker> client,
                                           MessageHandler h)
                                    throws ProtocolError,
                                           AccessException

Description copied from class: Message

Visitor method.

Specified by:

dispatch in class Message<DissemReadMessage.Response,AccessException>

Parameters:

client - the node that is issuing the request.

h - the handler to which this message is to be dispatched.

Throws:

ProtocolError

AccessException

writeMessage

protected void writeMessage(java.io.DataOutput out)
                     throws java.io.IOException

Description copied from class: Message

Writes this message out on the given output stream.

Specified by:

writeMessage in class Message<DissemReadMessage.Response,AccessException>

Throws:

java.io.IOException - if the DataOutput fails.

readResponse

protected DissemReadMessage.Response readResponse(java.io.DataInput in)
                                           throws java.io.IOException

Description copied from class: Message

Creates a Response message of the appropriate type using the provided DataOutput

Specified by:

readResponse in class Message<DissemReadMessage.Response,AccessException>

Throws:

java.io.IOException - if the response is malformed, or if the DataInput fails.

writeResponse

protected void writeResponse(java.io.DataOutput out,
                             DissemReadMessage.Response r)
                      throws java.io.IOException

Description copied from class: Message

Writes a Response message of the appropriate type using the provided DataOutput.

Specified by:

writeResponse in class Message<DissemReadMessage.Response,AccessException>

Throws:

java.io.IOException - if the DataOutput fails.