groupmgmt.impl
Class SPGroupInfoMessage

java.lang.Object
  groupmgmt.impl.SPGroupInfoMessage

All Implemented Interfaces:

java.io.Serializable

class SPGroupInfoMessage

extends java.lang.Object

implements java.io.Serializable

The SPGroupInfoMessage class; Sent by a leader to another leader when two groups should be merged. The leader with the lower IP address sends this message and then becomes a follower after receiving a SPGroupChangeMessage. The leader with the higher IP address waits for this and then sends out a SPGroupChangeMessage to all members of the new group.
Contains the connections Hashtable.

Version:

June 2003

Author:

Christine Julien, Tom Elgin

See Also:

SinglePhaseDisseminator, SPLeaderAddressMessage, SPGroupChangeMessage

Field Summary

private java.util.Hashtable

connections The connections Hashtable (network graph) of the leader.

Constructor Summary

SPGroupInfoMessage(java.util.Hashtable connections)
Constructor.

Method Summary

java.util.Hashtable

getConnections() Accessor to get the connections table of the sender.

Methods inherited from class java.lang.Object

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

Field Detail

connections

private java.util.Hashtable connections

The connections Hashtable (network graph) of the leader.

Constructor Detail

SPGroupInfoMessage

public SPGroupInfoMessage(java.util.Hashtable connections)

Constructor.

Parameters:

connections - The connections table of this leader to be merged with that of the higher-IP'ed leader.

Method Detail

getConnections

public java.util.Hashtable getConnections()

Accessor to get the connections table of the sender.

Returns:

The connections table of the sender.