shoppingsession.java

《J2EE企业级应用开发》一书的配套源代码

//Source file: H:\\book\\case\\com\\j2eeapp\\cdstore\\bean\\ShoppingSession.java

package com.j2eeapp.cdstore.bean;
import java.util.*;
import java.rmi.*;
import javax.naming.*;
import com.j2eeapp.cdstore.util.JNDINames;
import com.j2eeapp.cdstore.vo.*;
import com.j2eeapp.cdstore.servicelovator.*;
import com.j2eeapp.cdstore.cart.*;
import com.j2eeapp.cdstore.signon.*;

public class ShoppingSession 
{
   
   ShoppingFacade facade;
   ShoppingCart cart;
   String searchString=null ;
   boolean isLogin=false;
   public ShoppingSession() 
   {
    	try {
      init();
      ShoppingFacadeHome facadeHome = (ShoppingFacadeHome) new EJBServiceLocator().getRemoteHome("ejb/cart/shoppingfacade",ShoppingFacadeHome.class);
      facade = facadeHome.create();
      System.out.println("Instantiated sessionBean and Cart reference");
      cart=facade.getShoppingCart();
     }
     catch (Exception ex) {
      ex.printStackTrace();
     }
  }
  
    public boolean login(String user, String password) {
    try
    {
      SignonLocalHome signonHome=(SignonLocalHome)new EJBServiceLocator().getLocalHome("ejb/signon/signon/signon");
      SignonLocal signon=signonHome.create();
      return isLogin=signon.authenticate(user,password);
    }
    catch(Exception ex) {
      return false;
    }
  }
  public void logOut() {
   

  }
  public boolean isLoggedIn() {
    return isLogin;
  }
  public String getUserId() {
    try
    {
      return facade.getUserId();
      
    }
    catch (Exception ex) {
      ex.printStackTrace();
      return null;
    }
  }
   
   public void addItem(String itemid) 
   {
    try {
      cart.addItem(itemid);
    }
    catch (Exception ex) {
      throw new RuntimeException(ex.toString());
    }
   }
   
    public void addItem(String itemid,int qty) 
   {
    try {
      cart.addItem(itemid,qty);
    }
    catch (Exception ex) {
      throw new RuntimeException(ex.toString());
    }
   }
   public void addUser(String username,String password) 
   {
      SignonLocalHome signonHome=(SignonLocalHome)new EJBServiceLocator().getLocalHome("ejb/signon/signon/signon");
      SignonLocal signon=signonHome.create();
      signon.createUser(username,password);
      isLogin=true;
   }
   
   public void updateItem(String itemId,int newQty) 
   {
    try {
      cart.updateItemQuantity(itemId,newQty);
    }
    catch (Exception ex) {
      throw new RuntimeException(ex.toString());
    }
   }
   
   public void removeItem(String itemid) 
   {
	   	 try {
	      cart.deleteItem(itemid);
    }
    catch (Exception ex) {
      throw new RuntimeException(ex.toString());
    }
    
   }
   
   public void setSearchString(String search) 
   {
   		this.searchString=search;
    
   }
   
   public String  getSearchString() 
   {
    	return searchString;
   }
   
   public void checkout() 
   {
      cart.checkOut();
   }
   
  
   public void init() 
   {
    
   }
}