Node.java

/*   This file is part of lanSimulation.
 *
 *   lanSimulation is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   lanSimulation is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with lanSimulation; if not, write to the Free Software
 *   Foundation, Inc. 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *   Copyright original Java version: 2004 Bart Du Bois, Serge Demeyer
 *   Copyright C++ version: 2006 Matthias Rieger, Bart Van Rompaey
 */
package lanSimulation;

/**
 * A <em>Node</em> represents a single Node in a Local Area Network (LAN).
 * Several types of Nodes exist.
 */
public class Node {
	// enumeration constants specifying all legal node types
	/**
	 * A node with type NODE has only basic functionality.
	 */
	public static final byte NODE = 0;

	/**
	 * A node with type WORKSTATION may initiate requests on the LAN.
	 */
	public static final byte WORKSTATION = 1;

	/**
	 * A node with type PRINTER may accept packages to be printed.
	 */
	public static final byte PRINTER = 2;

	/**
	 * Holds the type of the Node.
	 */
	public byte type_;

	/**
	 * Holds the name of the Node.
	 */
	public String name_;

	/**
	 * Holds the next Node in the token ring architecture.
	 * 
	 * @see lanSimulation.Node
	 */
	public Node nextNode_;

	/**
	 * Construct a <em>Node</em> with given #type and #name.
	 * <p>
	 * <strong>Precondition:</strong> (type >= NODE) & (type <= PRINTER);
	 * </p>
	 */
	public Node(byte type, String name) {
		assert (type >= NODE) & (type <= PRINTER);
		type_ = type;
		name_ = name;
		nextNode_ = null;
	}
	public Node( String name) {
		name_ = name;
		nextNode_ = null;
	}

	/**
	 * Construct a <em>Node</em> with given #type and #name, and which is
	 * linked to #nextNode.
	 * <p>
	 * <strong>Precondition:</strong> (type >= NODE) & (type <= PRINTER);
	 * </p>
	 */
	public Node(byte type, String name, Node nextNode) {
		assert (type >= NODE) & (type <= PRINTER);
		type_ = type;
		name_ = name;
		nextNode_ = nextNode;
	}

        public void receivePacket(Packet p){
            // this will receive packet or simply
            // display packet is receive

            return;
        }

        public void sendPacket(Packet p){
            // this will send packet or simply
            // display packet is sent

            return;
        }
        
        public boolean equals(String name){
            return this.name_.equals(name);
        }

        public boolean equalsType(Class type){
            return type.equals(Node.class);
        }

        public void printOn(StringBuffer buf){
            
            buf.append("Node ");
            buf.append(this.name_);
            buf.append(" [Node]");
        
        }

        public void printXmlOn(StringBuffer buf){
            
            buf.append("<node>");
            buf.append(this.name_);
            buf.append("</node>");
	
        }
        
        
}