marking.java

Rakiura JFern是一个非常轻型的带有模拟器的Petri网络框架

// This is copyrighted source file, part of Rakiura JFern package. 
// See the file LICENSE for copyright information and the terms and conditions
// for copying, distributing and modifications of Rakiura JFern package.
// Copyright (C) 1999-2002 by Mariusz Nowostawski and others  [http://www.rakiura.org]

package org.rakiura.cpn;

/**/
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

/**
 * Implments a basic Marking utility.
 * 
 *<br><br>
 * Marking.java<br>
 * Created: Fri Sep 29 12:20:59 2000<br>
 *
 *@author  <a href="[e-mail]">Mariusz Nowostawski</a>
 *@version 2.1.0 $Revision: 1.4 $
 */
public class Marking {

  private PlaceHolder places;
  private Map marking;

  public Marking(){
    this.places = new PlaceHolder();
    this.marking = new HashMap();
  }

  public Multiset forID(String placeID){
    return (Multiset)this.marking.get(this.places.forID(placeID));
  }

  public Multiset forName(String placeName){
    return (Multiset)this.marking.get(this.places.forName(placeName));
  }

  public Marking put(Place place, Multiset multiset){
    this.places.add(place);
    this.marking.put(place, multiset);
    return this;
  }

  public Set places(){
    return this.places.places();
  }

  public String toString(){
    String res = "Marking: ";
    final Iterator iter = marking.keySet().iterator();
    while(iter.hasNext()){
      Place p = (Place)iter.next();
      res+= "("+p.toString()+" -> "+marking.get(p)+")";
    }
    return res;
  }

} // Marking
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