modelupdatemanager.java

一个优秀的供应商管理系统

package apusic.myshop.control.ejb;


import java.rmi.RemoteException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;
import javax.ejb.EJBException;

import apusic.myshop.util.Debug;
import apusic.myshop.util.JNDINames;
import apusic.myshop.control.event.BaseEvent;
import apusic.myshop.control.event.CartEvent;
import apusic.myshop.control.event.LoginEvent;
import apusic.myshop.control.event.DBLoginEvent;
import apusic.myshop.control.event.CustomerEvent;
import apusic.myshop.control.event.OrderEvent;

public class ModelUpdateManager implements java.io.Serializable {

  public ModelUpdateManager() { }

  public Collection getUpdatedModels(BaseEvent be)
    throws RemoteException {

    ArrayList modelList = new ArrayList();
    if (be instanceof CartEvent) {
		  modelList.add(JNDINames.CART_EJBHOME);
    } else if (be instanceof LoginEvent) {
      modelList.add(JNDINames.CUSTOMER_EJBHOME);
    } else if (be instanceof DBLoginEvent) {
      modelList.add(JNDINames.CUSTOMER_EJBHOME);
    } else if (be instanceof CustomerEvent) {
		  modelList.add(JNDINames.CUSTOMER_EJBHOME);
    } else if (be instanceof OrderEvent) {
	    // do not need this functionality right now, OrderBean does not
	    // need to know of model change event.
		  //String id = "#" + String.valueOf(((OrderEvent)ese).getRequestId());
      //modelList.add(JNDINames.ORDER_EJBHOME+id );
      modelList.add(JNDINames.ORDER_EJBHOME);
      modelList.add(JNDINames.INVENTORY_EJBHOME);
      modelList.add(JNDINames.CART_EJBHOME);
    }
    return modelList;
  }
}