observerfactory.java

来自「provide a room booking system」· Java 代码 · 共 49 行

/*
 * ObserverFactory.java
 *
 * Created on February 12, 2007, 1:48 PM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package Wearnes;

/**
 *
 * @author dongliang.guo
 */
import java.util.*;
public class ObserverFactory {
    
    /** Creates a new instance of ObserverFactory */
    public ObserverFactory() {
    }
   
    public static Hashtable observerStore = new Hashtable();

   public static ObserverOfRequest createObserver(String type,ITRequest r,ObserverProfile profile)
   {
      ObserverOfRequest s = (ObserverOfRequest) observerStore.get(type);
      String classname=(new CommonUtility()).getObserver(type);
      if(s == null) // observer not found
      {
         try
         {
            Class c=Class.forName(classname);            
           // s.initObserver(r,profile);
            observerStore.put(type,c);
           
           
         }
         catch(ClassNotFoundException e)
         {
            
         }
      }
      return s;
   }


}