QueryPaket.java

/*
** This file is part of Filius, a network construction and simulation software.
** 
** Originally created at the University of Siegen, Institute "Didactics of
** Informatics and E-Learning" by a students' project group:
**     members (2006-2007): 
**         André Asschoff, Johannes Bade, Carsten Dittich, Thomas Gerding,
**         Nadja Haßler, Ernst Johannes Klebert, Michell Weyer
**     supervisors:
**         Stefan Freischlad (maintainer until 2009), Peer Stechert
** Project is maintained since 2010 by Christian Eibl <filius@c.fameibl.de>
 **         and Stefan Freischlad
** Filius 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) version 3.
** 
** Filius 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 Filius.  If not, see <http://www.gnu.org/licenses/>.
*/
package filius.software.dateiaustausch;

import java.util.StringTokenizer;

import filius.Main;

/**
 * @author Nadja Haßler
 */
public class QueryPaket extends PeerToPeerPaket{

	private String minimaleGeschwindigkeit; //(in kb/sek)
	private String suchKriterien;

	public QueryPaket(String mg,String sk){
		super();
		Main.debug.println("INVOKED-2 ("+this.hashCode()+") "+getClass()+" (QueryPaket), constr: QueryPaket("+mg+","+sk+")");

		setPayload("0x80");
		this.minimaleGeschwindigkeit=mg;
		this.suchKriterien=sk;
		this.setPayloadLength(payloadLengthBerechnen());
	}

	/**
	 * wandelt einen String (wenn möglich) in ein QueryPaket um
	 * @param string der umzuwandelnde String
	 */
	public QueryPaket(String string){
		Main.debug.println("INVOKED ("+this.hashCode()+") "+getClass()+" (QueryPaket), constr: QueryPaket("+string+")");
//		String wird nach "//" getrennt
		StringTokenizer tk=new StringTokenizer(string,"//");
//		Absichern der Informationen
		guid=Integer.parseInt(tk.nextToken());
		payload=tk.nextToken();
		hops=Integer.parseInt(tk.nextToken());
		ttl=Integer.parseInt(tk.nextToken());
		payloadLength=Integer.parseInt(tk.nextToken());
		minimaleGeschwindigkeit=tk.nextToken();
		suchKriterien=tk.nextToken();
	}

	public int payloadLengthBerechnen(){
		Main.debug.println("INVOKED ("+this.hashCode()+") "+getClass()+" (QueryPaket), payloadLengthBerechnen()");
		int ergebnis=0;
		ergebnis=ergebnis+minimaleGeschwindigkeit.length()*8+suchKriterien.length()*8;
		return ergebnis;
	}

	public String getMinimaleGeschwindigkeit() {
		return minimaleGeschwindigkeit;
	}

	public void setMinimaleGeschwindigkeit(String minimaleGeschwindigkeit) {
		this.minimaleGeschwindigkeit = minimaleGeschwindigkeit;
	}

	public String getSuchKriterien() {
		return suchKriterien;
	}

	public void setSuchKriterien(String suchKriterien) {
		this.suchKriterien = suchKriterien;
	}

	/**
	 * wandelt ein QueryPaket in einen String um
	 * @return der String das QueryPaket verpackt als String
	 */
	public String toString(){
		if (getMinimaleGeschwindigkeit().equals("")){
			setMinimaleGeschwindigkeit(" ");
		}
		if (getSuchKriterien().equals("")){
			setSuchKriterien(" ");
		}
		return getGuid()+"//"+getPayload()+"//"+getHops()+"//"
		+getTtl()+"//"+getPayloadLength()+"//"
		+getMinimaleGeschwindigkeit()+"//"+getSuchKriterien();
	}
}