// 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.HashSet;import java.util.Set;/** * Utility class for storing and referencing Place objects. *  *<br><br> * PlaceHolder.java<br> * Created: Fri Sep 29 12:31:14 2000<br> * *@author  <a href="mariusz@rakiura.org">Mariusz Nowostawski</a> *@version 2.1.0 $Revision: 1.3 $ *@since 1.0 */final class PlaceHolder implements java.io.Serializable {  private HashMap map_forName;  private HashMap map_forID;  public PlaceHolder() {    this.map_forName = new HashMap();    this.map_forID = new HashMap();  }  public final PlaceHolder add(Place place){    this.map_forName.put(place.getName(), place);    this.map_forID.put(place.getID(), place);    return this;  }  public final Place forName(String name){    return (Place)this.map_forName.get(name);  }  public final Place forID(String id){    return (Place)this.map_forID.get(id);  }  public final Set places(){    return new HashSet(this.map_forID.values());  }  } // PlaceHolder//////////////////// end of file ////////////////////