Package com.sun.enterprise.mgmt

Class ClusterView

java.lang.Object

com.sun.enterprise.mgmt.ClusterView

public class ClusterView
extends java.lang.Object

ClusterView is a snapshot of the current membership of the group. The ClusterView is created anew each time a membership change occurs in the group. ClusterView is managed by ClusterViewManager.

Field Summary

Fields

Modifier and Type	Field	Description
long	masterViewId

Method Summary

Modifier and Type	Method	Description
void	add(SystemAdvertisement adv)	Adds a system advertisement to the view.
void	clear()	Removes all of the elements from this set (optional operation).
boolean	containsKey(PeerID id)
SystemAdvertisement	get(PeerID id)	Retrieves a system advertisement from a the table.
long	getClusterViewId()	Returns the cluster view ID
SystemAdvertisement	getMasterCandidate()	Returns the top node on the list
java.util.List<java.lang.String>	getPeerNamesInView()	Returns the list of peer names in the peer id sorted order from the cluster view
int	getSize()	Gets the viewSize attribute of the ClusterView object
java.util.List<SystemAdvertisement>	getView()	Returns a sorted list containing the System Advertisements of peers in PeerId sorted order
boolean	isFirst(SystemAdvertisement advertisement)	Determines whether this node is at the top of the list

Methods inherited from class java.lang.Object

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

Field Detail

masterViewId

public final long masterViewId

Method Detail

get

public SystemAdvertisement get(PeerID id)

Retrieves a system advertisement from a the table.

Parameters:

id - instance id

Returns:

Returns the SystemAdvertisement associated with id

add

public void add(SystemAdvertisement adv)

Adds a system advertisement to the view.

Parameters:

adv - adds a system advertisement to the view

containsKey

public boolean containsKey(PeerID id)

getView

public java.util.List<SystemAdvertisement> getView()

Returns a sorted list containing the System Advertisements of peers in PeerId sorted order

Returns:

List - list of system advertisements

getPeerNamesInView

public java.util.List<java.lang.String> getPeerNamesInView()

Returns the list of peer names in the peer id sorted order from the cluster view

Returns:

List

getSize

public int getSize()

Gets the viewSize attribute of the ClusterView object

Returns:

The viewSize

getMasterCandidate

public SystemAdvertisement getMasterCandidate()

Returns the top node on the list

Returns:

the top node on the list

isFirst

public boolean isFirst(SystemAdvertisement advertisement)

Determines whether this node is at the top of the list

Parameters:

advertisement - the advertisement to test

Returns:

true if this node is a the top of the list, false otherwise

getClusterViewId

public long getClusterViewId()

Returns the cluster view ID

Returns:

the view id

clear

public void clear()

Removes all of the elements from this set (optional operation).