dd.dissemination
Class RequestDisseminationSetQuery

java.lang.Object
  |
  +--dd.dissemination.RequestDisseminationSetQuery

All Implemented Interfaces:

DDQuery, QuickSerializable

public class RequestDisseminationSetQuery

extends Object

implements DDQuery, QuickSerializable

RequestDisseminationSetQuery is a DDQuery used in a RequestDisseminationSetMsg DDLocateMsg used to find a SetCreator that will respond with a set of dissemination sets.

USAGE

To receive a dissemination set, dispatch a RequestDisseminationSetMsg that contains a RequestDisseminationSetQuery. When the SetCreator receives the message, it will respond with a RequestDisseminationSetResponseMsg containing a set of dissemination sets.

Version:

$Id: RequestDisseminationSetQuery.java,v 1.3 2004/05/19 06:33:43 hweather Exp $

Author:

Hakim Weatherspoon

See Also:

SetCreatorStage, RequestDisseminationSetMsg, RequestDisseminationSetResponseMsg, DDLocateMsg

Constructor Summary

RequestDisseminationSetQuery()
Creates a new RequestDisseminationSetQuery.

RequestDisseminationSetQuery(InputBuffer buffer)
Constructs a RequestDisseminationSetQuery from its serialized form.

Method Summary

DDQueryResult	query(SecureHash node_guid, bamboo.vivaldi.VirtualCoordinate node_coordinates, SecureHash bp_guid, HostInfo bp_hinfo, DDTag tag, DDQueryState state) Perform the query on the given object pointer and tag, possibly modifying the supplied state.
void	serialize(OutputBuffer buffer) Specified by ostore.util.QuickSerializable
String	toString() Specified by java.lang.Object

Methods inherited from class java.lang.Object

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

Constructor Detail

RequestDisseminationSetQuery

public RequestDisseminationSetQuery()

Creates a new RequestDisseminationSetQuery.

RequestDisseminationSetQuery

public RequestDisseminationSetQuery(InputBuffer buffer)
                             throws QSException

Constructs a RequestDisseminationSetQuery from its serialized form.

Parameters:

buffer - serialized form of object.

Method Detail

serialize

public void serialize(OutputBuffer buffer)

Specified by ostore.util.QuickSerializable

Specified by:

serialize in interface QuickSerializable

query

public DDQueryResult query(SecureHash node_guid,
                           bamboo.vivaldi.VirtualCoordinate node_coordinates,
                           SecureHash bp_guid,
                           HostInfo bp_hinfo,
                           DDTag tag,
                           DDQueryState state)

Description copied from interface: DDQuery

Perform the query on the given object pointer and tag, possibly modifying the supplied state.

Specified by:

query in interface DDQuery

Parameters:

node_guid - The guid of the current node.

node_coordinates - The VirtualCoordinate of the current node. (possibly null).

bp_guid - The guid of the node to which the object pointer points.

bp_hinfo - The HostInfo of the node to which the object pointer points. (possibly null).

tag - The object's associated tag.

state - The state, passed in and (possibly) modified

Returns:

A query result of type DDQueryResultMatch or DDQueryResultNoMatch.

toString

public String toString()

Specified by java.lang.Object

Overrides:

toString in class Object