Package edu.cnu.mdi.sim.demo.network

Class NetworkModel

java.lang.Object

edu.cnu.mdi.sim.demo.network.NetworkModel

public final class NetworkModel
extends Object

World-coordinate network model for the decluttering demo.

All coordinates are normalized to the unit square:

• x in [0,1]
• y in [0,1]

Servers are stored first, followed by clients. Every client connects to exactly one server via an NetworkModel.Edge.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	NetworkModel.Edge	Directed edge from a node to another node.

Field Summary

Fields

Modifier and Type	Field	Description
final int	clientCount	Number of clients.
final List<Node>	clients
final List<NetworkModel.Edge>	edges	Each client has exactly one edge to a server.
final List<Node>	nodes
final int	printerCount	Number of printers.
final List<Node>	printers
final int	serverCount	Number of servers.
final List<Node>	servers	Nodes (servers, clients, printers).

Method Summary

Modifier and Type	Method	Description
static NetworkModel	random(int serverCount, int clientCount, int printerCount, Random rng)	Create a random world-based network model in the unit square.

Methods inherited from class java.lang.Object

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

Field Details

servers

public final List<Node> servers

Nodes (servers, clients, printers).

clients

public final List<Node> clients

printers

public final List<Node> printers

nodes

public final List<Node> nodes

edges

public final List<NetworkModel.Edge> edges

Each client has exactly one edge to a server.

serverCount

public final int serverCount

Number of servers.

clientCount

public final int clientCount

Number of clients.

printerCount

public final int printerCount

Number of printers.

Method Details

random

public static NetworkModel random(int serverCount,
 int clientCount,
 int printerCount,
 Random rng)

Create a random world-based network model in the unit square.

Servers are placed first, then clients, then printers. Every client is assigned to exactly one randomly chosen server via an NetworkModel.Edge. Each printer is assigned to between 1 and 4 clients (capped at clientCount to prevent an infinite loop when the client pool is very small). All assignments are unique per printer.

Parameters:

serverCount - number of servers; must be ≥ 4

clientCount - number of clients; must be ≥ 6

printerCount - number of printers; must be ≥ 0

rng - random number generator; must not be null

Returns:

a freshly constructed, randomized NetworkModel

Throws:

IllegalArgumentException - if any count constraint is violated or rng is null