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/*
* ShoppingEJB.java
*
* Created on May 15, 2003, 5:16 PM
*/
package shopping;
import javax.ejb.SessionContext;
import javax.ejb.SessionBean;
import java.util.Vector;
import java.lang.String;
import java.util.Iterator;
import javax.ejb.EJBException;
import java.rmi.RemoteException;
/**
*
* @author Harpreet
* @version
*/
public class RpaBean implements SessionBean {
private String shopper = "anonymous";
private String principal = "harpreet";
private int totalPrice = 0;
private int totalItems = 0;
private Vector items;
private Vector itemPrice;
private SessionContext sc = null;
/** Creates a new instance of ShoppingEJB */
public void ejbCreate(String shopperName) {
shopper = shopperName;
items = new Vector();
itemPrice = new Vector();
}
public void addItem(java.lang.String item, int price) throws EJBException,
RemoteException{
checkCallerPrincipal();
items.add(item);
itemPrice.add(new Integer(price));
totalItems++;
totalPrice += price;
System.out.println(" Shopping Cart: Shopper "+ shopper +" has bought "
+ item +" for price ="+ price +" .Total Items = "+totalItems +
" .TotalPrice = " + totalPrice);
}
public void deleteItem(java.lang.String item) throws EJBException,
RemoteException{
checkCallerPrincipal();
int index = items.indexOf(item);
items.remove(item);
Integer price = (Integer) itemPrice.get(index);
System.out.println("Shopping Cart: Removing item "+ item +" @price "+
price.intValue());
totalPrice -= price.shortValue();
itemPrice.remove(index);
System.out.println(" Shopping Cart: Shopper "+ shopper +" .Total Items = "+totalItems +
" .TotalPrice = " + totalPrice);
}
public double getTotalCost() throws EJBException{
checkCallerPrincipal();
return totalPrice;
}
public String[] getItems() throws EJBException{
checkCallerPrincipal();
Iterator it = items.iterator();
int sz = items.size();
String[] itemNames = new String[sz];
for(int i=0; it.hasNext();){
itemNames[i++] = new String( (String)it.next());
}
return itemNames;
}
public void ejbActivate() {
System.out.println("In Rpa ejbActivate");
}
public void ejbPassivate() {
System.out.println("In Rpa ejbPassivate");
}
public void ejbRemove() {
System.out.println("In Rpa ejbRemove");
}
public void setSessionContext(javax.ejb.SessionContext sessionContext) {
sc = sessionContext;
}
private void checkCallerPrincipal() throws EJBException {
System.out.println("Caller Princial = " + sc.getCallerPrincipal() +
" comparing against " + principal);
if (!sc.getCallerPrincipal().getName().equals(principal)) {
throw new EJBException("Wrong Principal. Principal should be = "
+ principal);
}
}
}