cgl.narada.topology.viewer
Class Cluster

java.lang.Object
  cgl.narada.topology.viewer.Node
      cgl.narada.topology.viewer.Cluster

public class Cluster
extends Node

This class represents all the clusters consisting of nodes. The cluster is second level in the node address. If node's address is 1.2.3.4 then cluster id is 3

Field Summary

List

nodes

Fields inherited from class cgl.narada.topology.viewer.Node

clients, INVALID_VALUE, nodeId, nodeLocation, parentClusterId, parentSClusterId, parentSSClusterId

Constructor Summary

Cluster(int clusterId, int pSClusterId, int pSSClusterId)
Only constructor.

Method Summary

void	deleteAllNodes(List nodesToBeDeleted) Deletes all the nodes in the cluster
void	deleteNode(int nodeId, List nodesToBeDeleted) Deletes an existing node inside the cluster.
void	drawCluster(Graphics g, int limitX1, int limitY1, int limitX2, int limitY2) Draws the cluster only if its part is visible on the screen.
Node	getNodeAtParticularCoordinates(int x, int y) Finds a node in the cluster, nearest to specified coordinates.
Node	getParticularNode(int nodeId) Returns a node in the cluster with specified node id
void	insertNode(int nodeId) Adds a new node to the list.
void	repositionNodes() Gets new positions and assigns then to all nodes inside the cluster.

Methods inherited from class cgl.narada.topology.viewer.Node

addClient, addTopic, canFitOnPanel, deleteAllClients, deleteAllTopics, deleteClient, deleteTopic, drawNode, getAllClients, getClient, getNodeAddress

Methods inherited from class java.lang.Object

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

Field Detail

nodes

public List nodes

Constructor Detail

Cluster

public Cluster(int clusterId,
               int pSClusterId,
               int pSSClusterId)

Only constructor.

Method Detail

insertNode

public void insertNode(int nodeId)

Adds a new node to the list. Depending upon the total number of nodes in the list, recalculate the new positions for each node.

Parameters:

nodeId - id of a node

deleteNode

public void deleteNode(int nodeId,
                       List nodesToBeDeleted)
                throws TopologyException

Deletes an existing node inside the cluster. Recalculated the new position for each node.

Parameters:

nodeId - id of the node

nodesToBeDeleted - List which contains the node address of a node which needs to be deleted.

Throws:

TopologyException - if specified node is not found in the cluster.

deleteAllNodes

public void deleteAllNodes(List nodesToBeDeleted)

Deletes all the nodes in the cluster

Parameters:

nodesToBeDeleted - List which contains the node address of a node which needs to be deleted.

getNodeAtParticularCoordinates

public Node getNodeAtParticularCoordinates(int x,
                                           int y)

Finds a node in the cluster, nearest to specified coordinates.

Parameters:

x - X-coordinate.

y - Y-coordinate.

Returns:

Node null if no such node is found

getParticularNode

public Node getParticularNode(int nodeId)

Returns a node in the cluster with specified node id

Parameters:

nodeId - id of a node

Returns:

Node

drawCluster

public void drawCluster(Graphics g,
                        int limitX1,
                        int limitY1,
                        int limitX2,
                        int limitY2)

Draws the cluster only if its part is visible on the screen. Draws all the nodes inside it.

Parameters:

g - Graphics object for image drawing.

limitX1 - lower limit for X-coordinate

limitY1 - lower limit for Y-coordinate

limitX2 - upper limit for X-coordinate

limitY2 - upper limit for Y-coordinate

repositionNodes

public void repositionNodes()

Gets new positions and assigns then to all nodes inside the cluster. If the node is newly added then only sets its color otherwise maintains its color.